From 85356ea0013a9cd2758a877e99b0d3afd666d67d Mon Sep 17 00:00:00 2001
From: Philipp <philipp.lackner@yahoo.de>
Date: Sun, 12 Apr 2020 16:13:08 +0200
Subject: [PATCH 1/9] navigation setup

---
 .idea/gradle.xml                              |  1 +
 app/build.gradle                              |  1 +
 app/src/main/AndroidManifest.xml              |  2 +-
 .../androiddevs/mvvmnewsapp/MainActivity.kt   | 12 -----
 .../mvvmnewsapp/ui/NewsActivity.kt            | 18 ++++++++
 .../ui/fragments/ArticleFragment.kt           |  7 +++
 .../ui/fragments/BreakingNewsFragment.kt      |  7 +++
 .../ui/fragments/SavedNewsFragment.kt         |  7 +++
 .../ui/fragments/SearchNewsFragment.kt        |  7 +++
 .../{activity_main.xml => activity_news.xml}  | 11 ++++-
 .../main/res/menu/bottom_navigation_menu.xml  | 16 +++++++
 .../main/res/navigation/news_nav_graph.xml    | 46 +++++++++++++++++++
 12 files changed, 120 insertions(+), 15 deletions(-)
 delete mode 100644 app/src/main/java/com/androiddevs/mvvmnewsapp/MainActivity.kt
 create mode 100644 app/src/main/java/com/androiddevs/mvvmnewsapp/ui/NewsActivity.kt
 create mode 100644 app/src/main/java/com/androiddevs/mvvmnewsapp/ui/fragments/ArticleFragment.kt
 create mode 100644 app/src/main/java/com/androiddevs/mvvmnewsapp/ui/fragments/BreakingNewsFragment.kt
 create mode 100644 app/src/main/java/com/androiddevs/mvvmnewsapp/ui/fragments/SavedNewsFragment.kt
 create mode 100644 app/src/main/java/com/androiddevs/mvvmnewsapp/ui/fragments/SearchNewsFragment.kt
 rename app/src/main/res/layout/{activity_main.xml => activity_news.xml} (71%)
 create mode 100644 app/src/main/res/menu/bottom_navigation_menu.xml
 create mode 100644 app/src/main/res/navigation/news_nav_graph.xml

diff --git a/.idea/gradle.xml b/.idea/gradle.xml
index 440480e5..5cd135a0 100644
--- a/.idea/gradle.xml
+++ b/.idea/gradle.xml
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
+  <component name="GradleMigrationSettings" migrationVersion="1" />
   <component name="GradleSettings">
     <option name="linkedExternalProjectsSettings">
       <GradleProjectSettings>
diff --git a/app/build.gradle b/app/build.gradle
index ed2ecfe3..b3dcae19 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -39,6 +39,7 @@ dependencies {
     implementation 'androidx.appcompat:appcompat:1.1.0'
     implementation 'androidx.core:core-ktx:1.2.0'
     implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
+    implementation 'androidx.legacy:legacy-support-v4:1.0.0'
     testImplementation 'junit:junit:4.12'
     androidTestImplementation 'androidx.test.ext:junit:1.1.1'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 0a2ed1dd..371c840c 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -9,7 +9,7 @@
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
         android:theme="@style/AppTheme">
-        <activity android:name=".MainActivity">
+        <activity android:name=".ui.NewsActivity">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
 
diff --git a/app/src/main/java/com/androiddevs/mvvmnewsapp/MainActivity.kt b/app/src/main/java/com/androiddevs/mvvmnewsapp/MainActivity.kt
deleted file mode 100644
index 3752ae31..00000000
--- a/app/src/main/java/com/androiddevs/mvvmnewsapp/MainActivity.kt
+++ /dev/null
@@ -1,12 +0,0 @@
-package com.androiddevs.mvvmnewsapp
-
-import androidx.appcompat.app.AppCompatActivity
-import android.os.Bundle
-
-class MainActivity : AppCompatActivity() {
-
-    override fun onCreate(savedInstanceState: Bundle?) {
-        super.onCreate(savedInstanceState)
-        setContentView(R.layout.activity_main)
-    }
-}
diff --git a/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/NewsActivity.kt b/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/NewsActivity.kt
new file mode 100644
index 00000000..74b4699e
--- /dev/null
+++ b/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/NewsActivity.kt
@@ -0,0 +1,18 @@
+package com.androiddevs.mvvmnewsapp.ui
+
+import androidx.appcompat.app.AppCompatActivity
+import android.os.Bundle
+import androidx.navigation.fragment.findNavController
+import androidx.navigation.ui.setupWithNavController
+import com.androiddevs.mvvmnewsapp.R
+import kotlinx.android.synthetic.main.activity_news.*
+
+class NewsActivity : AppCompatActivity() {
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_news)
+
+        bottomNavigationView.setupWithNavController(newsNavHostFragment.findNavController())
+    }
+}
diff --git a/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/fragments/ArticleFragment.kt b/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/fragments/ArticleFragment.kt
new file mode 100644
index 00000000..b30c4952
--- /dev/null
+++ b/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/fragments/ArticleFragment.kt
@@ -0,0 +1,7 @@
+package com.androiddevs.mvvmnewsapp.ui.fragments
+
+import androidx.fragment.app.Fragment
+import com.androiddevs.mvvmnewsapp.R
+
+class ArticleFragment : Fragment(R.layout.fragment_article) {
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/fragments/BreakingNewsFragment.kt b/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/fragments/BreakingNewsFragment.kt
new file mode 100644
index 00000000..3c18c51b
--- /dev/null
+++ b/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/fragments/BreakingNewsFragment.kt
@@ -0,0 +1,7 @@
+package com.androiddevs.mvvmnewsapp.ui.fragments
+
+import androidx.fragment.app.Fragment
+import com.androiddevs.mvvmnewsapp.R
+
+class BreakingNewsFragment : Fragment(R.layout.fragment_breaking_news) {
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/fragments/SavedNewsFragment.kt b/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/fragments/SavedNewsFragment.kt
new file mode 100644
index 00000000..623c1b23
--- /dev/null
+++ b/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/fragments/SavedNewsFragment.kt
@@ -0,0 +1,7 @@
+package com.androiddevs.mvvmnewsapp.ui.fragments
+
+import androidx.fragment.app.Fragment
+import com.androiddevs.mvvmnewsapp.R
+
+class SavedNewsFragment : Fragment(R.layout.fragment_saved_news) {
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/fragments/SearchNewsFragment.kt b/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/fragments/SearchNewsFragment.kt
new file mode 100644
index 00000000..2c57ef7d
--- /dev/null
+++ b/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/fragments/SearchNewsFragment.kt
@@ -0,0 +1,7 @@
+package com.androiddevs.mvvmnewsapp.ui.fragments
+
+import androidx.fragment.app.Fragment
+import com.androiddevs.mvvmnewsapp.R
+
+class SearchNewsFragment : Fragment(R.layout.fragment_search_news) {
+}
\ No newline at end of file
diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_news.xml
similarity index 71%
rename from app/src/main/res/layout/activity_main.xml
rename to app/src/main/res/layout/activity_news.xml
index ef503e9b..675bd0d7 100644
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_news.xml
@@ -4,7 +4,7 @@
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    tools:context=".MainActivity">
+    tools:context=".ui.NewsActivity">
 
     <FrameLayout
         android:id="@+id/flFragment"
@@ -16,7 +16,13 @@
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toTopOf="parent">
 
-
+        <fragment
+            android:id="@+id/newsNavHostFragment"
+            android:name="androidx.navigation.fragment.NavHostFragment"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            app:defaultNavHost="true"
+            app:navGraph="@navigation/news_nav_graph" />
 
     </FrameLayout>
 
@@ -24,6 +30,7 @@
         android:id="@+id/bottomNavigationView"
         android:layout_width="match_parent"
         android:layout_height="56dp"
+        app:menu="@menu/bottom_navigation_menu"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintHorizontal_bias="0.5"
diff --git a/app/src/main/res/menu/bottom_navigation_menu.xml b/app/src/main/res/menu/bottom_navigation_menu.xml
new file mode 100644
index 00000000..37b57f6c
--- /dev/null
+++ b/app/src/main/res/menu/bottom_navigation_menu.xml
@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="utf-8"?>
+<menu xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <item android:id="@+id/breakingNewsFragment"
+        android:title="Breaking News"
+        android:icon="@drawable/ic_breaking_news" />
+
+    <item android:id="@+id/savedNewsFragment"
+        android:title="Saved News"
+        android:icon="@drawable/ic_favorite" />
+
+    <item android:id="@+id/searchNewsFragment"
+        android:title="Search News"
+        android:icon="@drawable/ic_all_news" />
+
+</menu>
\ No newline at end of file
diff --git a/app/src/main/res/navigation/news_nav_graph.xml b/app/src/main/res/navigation/news_nav_graph.xml
new file mode 100644
index 00000000..cc171bb2
--- /dev/null
+++ b/app/src/main/res/navigation/news_nav_graph.xml
@@ -0,0 +1,46 @@
+<?xml version="1.0" encoding="utf-8"?>
+<navigation xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto" android:id="@+id/news_nav_graph"
+    app:startDestination="@id/breakingNewsFragment">
+
+    <fragment
+        android:id="@+id/breakingNewsFragment"
+        android:name="com.androiddevs.mvvmnewsapp.ui.fragments.BreakingNewsFragment"
+        android:label="BreakingNewsFragment" >
+        <action
+            android:id="@+id/action_breakingNewsFragment_to_articleFragment"
+            app:destination="@id/articleFragment"
+            app:enterAnim="@anim/slide_in_right"
+            app:exitAnim="@anim/slide_out_left"
+            app:popEnterAnim="@anim/slide_in_left"
+            app:popExitAnim="@anim/slide_out_right"/>
+    </fragment>
+    <fragment
+        android:id="@+id/savedNewsFragment"
+        android:name="com.androiddevs.mvvmnewsapp.ui.fragments.SavedNewsFragment"
+        android:label="SavedNewsFragment" >
+        <action
+            android:id="@+id/action_savedNewsFragment_to_articleFragment"
+            app:destination="@id/articleFragment"
+            app:enterAnim="@anim/slide_in_right"
+            app:exitAnim="@anim/slide_out_left"
+            app:popEnterAnim="@anim/slide_in_left"
+            app:popExitAnim="@anim/slide_out_right"/>
+    </fragment>
+    <fragment
+        android:id="@+id/searchNewsFragment"
+        android:name="com.androiddevs.mvvmnewsapp.ui.fragments.SearchNewsFragment"
+        android:label="SearchNewsFragment" >
+        <action
+            android:id="@+id/action_searchNewsFragment_to_articleFragment"
+            app:destination="@id/articleFragment"
+            app:enterAnim="@anim/slide_in_right"
+            app:exitAnim="@anim/slide_out_left"
+            app:popEnterAnim="@anim/slide_in_left"
+            app:popExitAnim="@anim/slide_out_right" />
+    </fragment>
+    <fragment
+        android:id="@+id/articleFragment"
+        android:name="com.androiddevs.mvvmnewsapp.ui.fragments.ArticleFragment"
+        android:label="ArticleFragment" />
+</navigation>
\ No newline at end of file

From 6b2b16f9854674f5211bc54009636e0dc09d41b8 Mon Sep 17 00:00:00 2001
From: Philipp <philipp.lackner@yahoo.de>
Date: Sun, 12 Apr 2020 20:11:05 +0200
Subject: [PATCH 2/9] retrofit setup

---
 .../com/androiddevs/mvvmnewsapp/Article.kt    | 15 ++++++++++
 .../androiddevs/mvvmnewsapp/NewsResponse.kt   | 10 +++++++
 .../com/androiddevs/mvvmnewsapp/Source.kt     |  9 ++++++
 .../androiddevs/mvvmnewsapp/api/NewsAPI.kt    | 30 +++++++++++++++++++
 .../mvvmnewsapp/api/RetrofitInstance.kt       | 29 ++++++++++++++++++
 .../androiddevs/mvvmnewsapp/util/Constants.kt |  8 +++++
 6 files changed, 101 insertions(+)
 create mode 100644 app/src/main/java/com/androiddevs/mvvmnewsapp/Article.kt
 create mode 100644 app/src/main/java/com/androiddevs/mvvmnewsapp/NewsResponse.kt
 create mode 100644 app/src/main/java/com/androiddevs/mvvmnewsapp/Source.kt
 create mode 100644 app/src/main/java/com/androiddevs/mvvmnewsapp/api/NewsAPI.kt
 create mode 100644 app/src/main/java/com/androiddevs/mvvmnewsapp/api/RetrofitInstance.kt
 create mode 100644 app/src/main/java/com/androiddevs/mvvmnewsapp/util/Constants.kt

diff --git a/app/src/main/java/com/androiddevs/mvvmnewsapp/Article.kt b/app/src/main/java/com/androiddevs/mvvmnewsapp/Article.kt
new file mode 100644
index 00000000..e09e712d
--- /dev/null
+++ b/app/src/main/java/com/androiddevs/mvvmnewsapp/Article.kt
@@ -0,0 +1,15 @@
+package com.androiddevs.mvvmnewsapp
+
+
+import com.google.gson.annotations.SerializedName
+
+data class Article(
+    val author: String,
+    val content: String,
+    val description: String,
+    val publishedAt: String,
+    val source: Source,
+    val title: String,
+    val url: String,
+    val urlToImage: String
+)
\ No newline at end of file
diff --git a/app/src/main/java/com/androiddevs/mvvmnewsapp/NewsResponse.kt b/app/src/main/java/com/androiddevs/mvvmnewsapp/NewsResponse.kt
new file mode 100644
index 00000000..0324ef98
--- /dev/null
+++ b/app/src/main/java/com/androiddevs/mvvmnewsapp/NewsResponse.kt
@@ -0,0 +1,10 @@
+package com.androiddevs.mvvmnewsapp
+
+
+import com.google.gson.annotations.SerializedName
+
+data class NewsResponse(
+    val articles: List<Article>,
+    val status: String,
+    val totalResults: Int
+)
\ No newline at end of file
diff --git a/app/src/main/java/com/androiddevs/mvvmnewsapp/Source.kt b/app/src/main/java/com/androiddevs/mvvmnewsapp/Source.kt
new file mode 100644
index 00000000..3414cea3
--- /dev/null
+++ b/app/src/main/java/com/androiddevs/mvvmnewsapp/Source.kt
@@ -0,0 +1,9 @@
+package com.androiddevs.mvvmnewsapp
+
+
+import com.google.gson.annotations.SerializedName
+
+data class Source(
+    val id: Any,
+    val name: String
+)
\ No newline at end of file
diff --git a/app/src/main/java/com/androiddevs/mvvmnewsapp/api/NewsAPI.kt b/app/src/main/java/com/androiddevs/mvvmnewsapp/api/NewsAPI.kt
new file mode 100644
index 00000000..56dc3603
--- /dev/null
+++ b/app/src/main/java/com/androiddevs/mvvmnewsapp/api/NewsAPI.kt
@@ -0,0 +1,30 @@
+package com.androiddevs.mvvmnewsapp.api
+
+import com.androiddevs.mvvmnewsapp.NewsResponse
+import com.androiddevs.mvvmnewsapp.util.Constants.Companion.API_KEY
+import retrofit2.Response
+import retrofit2.http.GET
+import retrofit2.http.Query
+
+interface NewsAPI {
+
+    @GET("v2/top-headlines")
+    suspend fun getBreakingNews(
+        @Query("country")
+        countryCode: String = "us",
+        @Query("page")
+        pageNumber: Int = 1,
+        @Query("apiKey")
+        apiKey: String = API_KEY
+    ): Response<NewsResponse>
+
+    @GET("v2/everything")
+    suspend fun searchForNews(
+        @Query("q")
+        searchQuery: String,
+        @Query("page")
+        pageNumber: Int = 1,
+        @Query("apiKey")
+        apiKey: String = API_KEY
+    ): Response<NewsResponse>
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/androiddevs/mvvmnewsapp/api/RetrofitInstance.kt b/app/src/main/java/com/androiddevs/mvvmnewsapp/api/RetrofitInstance.kt
new file mode 100644
index 00000000..aaebd1a7
--- /dev/null
+++ b/app/src/main/java/com/androiddevs/mvvmnewsapp/api/RetrofitInstance.kt
@@ -0,0 +1,29 @@
+package com.androiddevs.mvvmnewsapp.api
+
+import com.androiddevs.mvvmnewsapp.util.Constants.Companion.BASE_URL
+import okhttp3.OkHttpClient
+import okhttp3.logging.HttpLoggingInterceptor
+import retrofit2.Retrofit
+import retrofit2.converter.gson.GsonConverterFactory
+
+class RetrofitInstance {
+    companion object {
+
+        private val retrofit by lazy {
+            val logging = HttpLoggingInterceptor()
+            logging.setLevel(HttpLoggingInterceptor.Level.BODY)
+            val client = OkHttpClient.Builder()
+                .addInterceptor(logging)
+                .build()
+            Retrofit.Builder()
+                .baseUrl(BASE_URL)
+                .addConverterFactory(GsonConverterFactory.create())
+                .client(client)
+                .build()
+        }
+
+        val api by lazy {
+            retrofit.create(NewsAPI::class.java)
+        }
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/androiddevs/mvvmnewsapp/util/Constants.kt b/app/src/main/java/com/androiddevs/mvvmnewsapp/util/Constants.kt
new file mode 100644
index 00000000..d7b4b348
--- /dev/null
+++ b/app/src/main/java/com/androiddevs/mvvmnewsapp/util/Constants.kt
@@ -0,0 +1,8 @@
+package com.androiddevs.mvvmnewsapp.util
+
+class Constants {
+    companion object {
+        const val API_KEY = "6953a7421bb749c589e687746c85eee8"
+        const val BASE_URL = "https://newsapi.org"
+    }
+}
\ No newline at end of file

From 9fe9cfec7fd2ad807e3488e373ae12494c2d6a11 Mon Sep 17 00:00:00 2001
From: Philipp <philipp.lackner@yahoo.de>
Date: Sun, 12 Apr 2020 20:58:45 +0200
Subject: [PATCH 3/9] dao and article setup

---
 .../java/com/androiddevs/mvvmnewsapp/Article.kt |  7 +++++++
 .../androiddevs/mvvmnewsapp/db/ArticleDao.kt    | 17 +++++++++++++++++
 2 files changed, 24 insertions(+)
 create mode 100644 app/src/main/java/com/androiddevs/mvvmnewsapp/db/ArticleDao.kt

diff --git a/app/src/main/java/com/androiddevs/mvvmnewsapp/Article.kt b/app/src/main/java/com/androiddevs/mvvmnewsapp/Article.kt
index e09e712d..07110a3b 100644
--- a/app/src/main/java/com/androiddevs/mvvmnewsapp/Article.kt
+++ b/app/src/main/java/com/androiddevs/mvvmnewsapp/Article.kt
@@ -1,9 +1,16 @@
 package com.androiddevs.mvvmnewsapp
 
 
+import androidx.room.Entity
+import androidx.room.PrimaryKey
 import com.google.gson.annotations.SerializedName
 
+@Entity(
+    tableName = "articles"
+)
 data class Article(
+    @PrimaryKey(autoGenerate = true)
+    var id: Int? = null,
     val author: String,
     val content: String,
     val description: String,
diff --git a/app/src/main/java/com/androiddevs/mvvmnewsapp/db/ArticleDao.kt b/app/src/main/java/com/androiddevs/mvvmnewsapp/db/ArticleDao.kt
new file mode 100644
index 00000000..16beb19b
--- /dev/null
+++ b/app/src/main/java/com/androiddevs/mvvmnewsapp/db/ArticleDao.kt
@@ -0,0 +1,17 @@
+package com.androiddevs.mvvmnewsapp.db
+
+import androidx.room.*
+import com.androiddevs.mvvmnewsapp.Article
+
+@Dao
+interface ArticleDao {
+
+    @Insert(onConflict = OnConflictStrategy.REPLACE)
+    suspend fun upsert(article: Article): Long
+
+    @Query("SELECT * FROM articles")
+    suspend fun getAllArticles(): List<Article>
+
+    @Delete
+    suspend fun deleteArticle(article: Article)
+}
\ No newline at end of file

From ee59a4ef64cf209d82ae0ea0fedac4be4f3b3925 Mon Sep 17 00:00:00 2001
From: Philipp <philipp.lackner@yahoo.de>
Date: Mon, 13 Apr 2020 14:06:07 +0200
Subject: [PATCH 4/9] database and type converter setup

---
 .../androiddevs/mvvmnewsapp/api/NewsAPI.kt    |  2 +-
 .../androiddevs/mvvmnewsapp/db/ArticleDao.kt  |  2 +-
 .../mvvmnewsapp/db/ArticleDatabase.kt         | 35 +++++++++++++++++++
 .../androiddevs/mvvmnewsapp/db/Converters.kt  | 17 +++++++++
 .../mvvmnewsapp/{ => models}/Article.kt       |  3 +-
 .../mvvmnewsapp/{ => models}/NewsResponse.kt  |  4 +--
 .../mvvmnewsapp/{ => models}/Source.kt        |  2 +-
 7 files changed, 58 insertions(+), 7 deletions(-)
 create mode 100644 app/src/main/java/com/androiddevs/mvvmnewsapp/db/ArticleDatabase.kt
 create mode 100644 app/src/main/java/com/androiddevs/mvvmnewsapp/db/Converters.kt
 rename app/src/main/java/com/androiddevs/mvvmnewsapp/{ => models}/Article.kt (81%)
 rename app/src/main/java/com/androiddevs/mvvmnewsapp/{ => models}/NewsResponse.kt (54%)
 rename app/src/main/java/com/androiddevs/mvvmnewsapp/{ => models}/Source.kt (71%)

diff --git a/app/src/main/java/com/androiddevs/mvvmnewsapp/api/NewsAPI.kt b/app/src/main/java/com/androiddevs/mvvmnewsapp/api/NewsAPI.kt
index 56dc3603..f492659f 100644
--- a/app/src/main/java/com/androiddevs/mvvmnewsapp/api/NewsAPI.kt
+++ b/app/src/main/java/com/androiddevs/mvvmnewsapp/api/NewsAPI.kt
@@ -1,6 +1,6 @@
 package com.androiddevs.mvvmnewsapp.api
 
-import com.androiddevs.mvvmnewsapp.NewsResponse
+import com.androiddevs.mvvmnewsapp.models.NewsResponse
 import com.androiddevs.mvvmnewsapp.util.Constants.Companion.API_KEY
 import retrofit2.Response
 import retrofit2.http.GET
diff --git a/app/src/main/java/com/androiddevs/mvvmnewsapp/db/ArticleDao.kt b/app/src/main/java/com/androiddevs/mvvmnewsapp/db/ArticleDao.kt
index 16beb19b..2f00ee40 100644
--- a/app/src/main/java/com/androiddevs/mvvmnewsapp/db/ArticleDao.kt
+++ b/app/src/main/java/com/androiddevs/mvvmnewsapp/db/ArticleDao.kt
@@ -1,7 +1,7 @@
 package com.androiddevs.mvvmnewsapp.db
 
 import androidx.room.*
-import com.androiddevs.mvvmnewsapp.Article
+import com.androiddevs.mvvmnewsapp.models.Article
 
 @Dao
 interface ArticleDao {
diff --git a/app/src/main/java/com/androiddevs/mvvmnewsapp/db/ArticleDatabase.kt b/app/src/main/java/com/androiddevs/mvvmnewsapp/db/ArticleDatabase.kt
new file mode 100644
index 00000000..677d444f
--- /dev/null
+++ b/app/src/main/java/com/androiddevs/mvvmnewsapp/db/ArticleDatabase.kt
@@ -0,0 +1,35 @@
+package com.androiddevs.mvvmnewsapp.db
+
+import android.content.Context
+import androidx.room.Database
+import androidx.room.Room
+import androidx.room.RoomDatabase
+import androidx.room.TypeConverters
+import com.androiddevs.mvvmnewsapp.models.Article
+
+@Database(
+    entities = [Article::class],
+    version = 1
+)
+@TypeConverters(Converters::class)
+abstract class ArticleDatabase : RoomDatabase() {
+
+    abstract fun getArticleDao(): ArticleDao
+
+    companion object {
+        @Volatile
+        private var instance: ArticleDatabase? = null
+        private val LOCK = Any()
+
+        operator fun invoke(context: Context) = instance ?: synchronized(LOCK) {
+            instance ?: createDatabase(context).also { instance = it }
+        }
+
+        private fun createDatabase(context: Context) =
+            Room.databaseBuilder(
+                context.applicationContext,
+                ArticleDatabase::class.java,
+                "article_db.db"
+            ).build()
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/androiddevs/mvvmnewsapp/db/Converters.kt b/app/src/main/java/com/androiddevs/mvvmnewsapp/db/Converters.kt
new file mode 100644
index 00000000..4bcb724e
--- /dev/null
+++ b/app/src/main/java/com/androiddevs/mvvmnewsapp/db/Converters.kt
@@ -0,0 +1,17 @@
+package com.androiddevs.mvvmnewsapp.db
+
+import androidx.room.TypeConverter
+import com.androiddevs.mvvmnewsapp.models.Source
+
+class Converters {
+
+    @TypeConverter
+    fun fromSource(source: Source): String {
+        return source.name
+    }
+
+    @TypeConverter
+    fun toSource(name: String): Source {
+        return Source(name, name)
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/androiddevs/mvvmnewsapp/Article.kt b/app/src/main/java/com/androiddevs/mvvmnewsapp/models/Article.kt
similarity index 81%
rename from app/src/main/java/com/androiddevs/mvvmnewsapp/Article.kt
rename to app/src/main/java/com/androiddevs/mvvmnewsapp/models/Article.kt
index 07110a3b..141f0eff 100644
--- a/app/src/main/java/com/androiddevs/mvvmnewsapp/Article.kt
+++ b/app/src/main/java/com/androiddevs/mvvmnewsapp/models/Article.kt
@@ -1,9 +1,8 @@
-package com.androiddevs.mvvmnewsapp
+package com.androiddevs.mvvmnewsapp.models
 
 
 import androidx.room.Entity
 import androidx.room.PrimaryKey
-import com.google.gson.annotations.SerializedName
 
 @Entity(
     tableName = "articles"
diff --git a/app/src/main/java/com/androiddevs/mvvmnewsapp/NewsResponse.kt b/app/src/main/java/com/androiddevs/mvvmnewsapp/models/NewsResponse.kt
similarity index 54%
rename from app/src/main/java/com/androiddevs/mvvmnewsapp/NewsResponse.kt
rename to app/src/main/java/com/androiddevs/mvvmnewsapp/models/NewsResponse.kt
index 0324ef98..586486d6 100644
--- a/app/src/main/java/com/androiddevs/mvvmnewsapp/NewsResponse.kt
+++ b/app/src/main/java/com/androiddevs/mvvmnewsapp/models/NewsResponse.kt
@@ -1,7 +1,7 @@
-package com.androiddevs.mvvmnewsapp
+package com.androiddevs.mvvmnewsapp.models
 
 
-import com.google.gson.annotations.SerializedName
+import com.androiddevs.mvvmnewsapp.models.Article
 
 data class NewsResponse(
     val articles: List<Article>,
diff --git a/app/src/main/java/com/androiddevs/mvvmnewsapp/Source.kt b/app/src/main/java/com/androiddevs/mvvmnewsapp/models/Source.kt
similarity index 71%
rename from app/src/main/java/com/androiddevs/mvvmnewsapp/Source.kt
rename to app/src/main/java/com/androiddevs/mvvmnewsapp/models/Source.kt
index 3414cea3..2e9a0821 100644
--- a/app/src/main/java/com/androiddevs/mvvmnewsapp/Source.kt
+++ b/app/src/main/java/com/androiddevs/mvvmnewsapp/models/Source.kt
@@ -1,4 +1,4 @@
-package com.androiddevs.mvvmnewsapp
+package com.androiddevs.mvvmnewsapp.models
 
 
 import com.google.gson.annotations.SerializedName

From 10044402faab04cd1b771e023ac5b5056a10d076 Mon Sep 17 00:00:00 2001
From: Philipp <philipp.lackner@yahoo.de>
Date: Mon, 13 Apr 2020 14:07:13 +0200
Subject: [PATCH 5/9] recyclerview adapter setup

---
 .../mvvmnewsapp/adapters/NewsAdapter.kt       | 85 +++++++++++++++++++
 1 file changed, 85 insertions(+)
 create mode 100644 app/src/main/java/com/androiddevs/mvvmnewsapp/adapters/NewsAdapter.kt

diff --git a/app/src/main/java/com/androiddevs/mvvmnewsapp/adapters/NewsAdapter.kt b/app/src/main/java/com/androiddevs/mvvmnewsapp/adapters/NewsAdapter.kt
new file mode 100644
index 00000000..a2443a8c
--- /dev/null
+++ b/app/src/main/java/com/androiddevs/mvvmnewsapp/adapters/NewsAdapter.kt
@@ -0,0 +1,85 @@
+package com.androiddevs.mvvmnewsapp.adapters
+
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.recyclerview.widget.AsyncListDiffer
+import androidx.recyclerview.widget.DiffUtil
+import androidx.recyclerview.widget.RecyclerView
+import com.androiddevs.mvvmnewsapp.R
+import com.androiddevs.mvvmnewsapp.models.Article
+import com.bumptech.glide.Glide
+import kotlinx.android.synthetic.main.item_article_preview.view.*
+
+class NewsAdapter : RecyclerView.Adapter<NewsAdapter.ArticleViewHolder>() {
+
+    private var onItemClickListener: ((Article) -> Unit)? = null
+
+    inner class ArticleViewHolder(itemView: View): RecyclerView.ViewHolder(itemView)
+
+    private val differCallback = object : DiffUtil.ItemCallback<Article>() {
+        override fun areItemsTheSame(oldItem: Article, newItem: Article): Boolean {
+            return oldItem === newItem
+        }
+
+        override fun areContentsTheSame(oldItem: Article, newItem: Article): Boolean {
+            return oldItem == newItem
+        }
+    }
+
+    val differ = AsyncListDiffer(this, differCallback)
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ArticleViewHolder {
+        return ArticleViewHolder(
+            LayoutInflater.from(parent.context).inflate(
+                R.layout.item_article_preview,
+                parent,
+                false
+            )
+        )
+    }
+
+    override fun getItemCount(): Int {
+        return differ.currentList.size
+    }
+
+    override fun onBindViewHolder(holder: ArticleViewHolder, position: Int) {
+        val article = differ.currentList[position]
+        holder.itemView.apply {
+            Glide.with(this).load(article.urlToImage).into(ivArticleImage)
+            tvSource.text = article.source.name
+            tvTitle.text = article.title
+            tvDescription.text = article.description
+            tvPublishedAt.text = article.publishedAt
+
+            setOnClickListener {
+                onItemClickListener?.let { it(article) }
+            }
+        }
+    }
+
+    fun addItem(article: Article, position: Int) {
+        val curList = differ.currentList.toMutableList()
+        curList.add(position, article)
+        differ.submitList(curList)
+    }
+
+    fun deleteArticle(article: Article) {
+        val curList = differ.currentList.toMutableList()
+        curList.remove(article)
+        differ.submitList(curList)
+    }
+}
+
+
+
+
+
+
+
+
+
+
+
+
+

From 7627d8e06ead80ceeea32358b5106103790f5474 Mon Sep 17 00:00:00 2001
From: Philipp <philipp.lackner@yahoo.de>
Date: Tue, 14 Apr 2020 13:21:19 +0200
Subject: [PATCH 6/9] breaking news request and response working

---
 app/src/main/AndroidManifest.xml              |  2 +
 .../mvvmnewsapp/adapters/NewsAdapter.kt       |  4 ++
 .../mvvmnewsapp/repository/NewsRepository.kt  | 11 ++++
 .../mvvmnewsapp/ui/NewsActivity.kt            |  8 +++
 .../mvvmnewsapp/ui/NewsViewModel.kt           | 37 ++++++++++++
 .../ui/NewsViewModelProviderFactory.kt        | 14 +++++
 .../ui/fragments/ArticleFragment.kt           | 11 ++++
 .../ui/fragments/BreakingNewsFragment.kt      | 57 +++++++++++++++++++
 .../ui/fragments/SavedNewsFragment.kt         | 12 ++++
 .../ui/fragments/SearchNewsFragment.kt        | 11 ++++
 .../androiddevs/mvvmnewsapp/util/Resource.kt  | 10 ++++
 11 files changed, 177 insertions(+)
 create mode 100644 app/src/main/java/com/androiddevs/mvvmnewsapp/repository/NewsRepository.kt
 create mode 100644 app/src/main/java/com/androiddevs/mvvmnewsapp/ui/NewsViewModel.kt
 create mode 100644 app/src/main/java/com/androiddevs/mvvmnewsapp/ui/NewsViewModelProviderFactory.kt
 create mode 100644 app/src/main/java/com/androiddevs/mvvmnewsapp/util/Resource.kt

diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 371c840c..ef0eec44 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -2,6 +2,8 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="com.androiddevs.mvvmnewsapp">
 
+    <uses-permission android:name="android.permission.INTERNET" />
+
     <application
         android:allowBackup="true"
         android:icon="@mipmap/ic_launcher"
diff --git a/app/src/main/java/com/androiddevs/mvvmnewsapp/adapters/NewsAdapter.kt b/app/src/main/java/com/androiddevs/mvvmnewsapp/adapters/NewsAdapter.kt
index a2443a8c..a7689979 100644
--- a/app/src/main/java/com/androiddevs/mvvmnewsapp/adapters/NewsAdapter.kt
+++ b/app/src/main/java/com/androiddevs/mvvmnewsapp/adapters/NewsAdapter.kt
@@ -69,6 +69,10 @@ class NewsAdapter : RecyclerView.Adapter<NewsAdapter.ArticleViewHolder>() {
         curList.remove(article)
         differ.submitList(curList)
     }
+
+    fun setOnItemClickListener(listener: (Article) -> Unit) {
+        onItemClickListener = listener
+    }
 }
 
 
diff --git a/app/src/main/java/com/androiddevs/mvvmnewsapp/repository/NewsRepository.kt b/app/src/main/java/com/androiddevs/mvvmnewsapp/repository/NewsRepository.kt
new file mode 100644
index 00000000..dffc3c9e
--- /dev/null
+++ b/app/src/main/java/com/androiddevs/mvvmnewsapp/repository/NewsRepository.kt
@@ -0,0 +1,11 @@
+package com.androiddevs.mvvmnewsapp.repository
+
+import com.androiddevs.mvvmnewsapp.api.RetrofitInstance
+import com.androiddevs.mvvmnewsapp.db.ArticleDatabase
+
+class NewsRepository(
+    val db: ArticleDatabase
+) {
+    suspend fun getBreakingNews(countryCode: String, pageNumber: Int) =
+        RetrofitInstance.api.getBreakingNews(countryCode, pageNumber)
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/NewsActivity.kt b/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/NewsActivity.kt
index 74b4699e..9e0ff35e 100644
--- a/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/NewsActivity.kt
+++ b/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/NewsActivity.kt
@@ -2,17 +2,25 @@ package com.androiddevs.mvvmnewsapp.ui
 
 import androidx.appcompat.app.AppCompatActivity
 import android.os.Bundle
+import androidx.lifecycle.ViewModelProvider
 import androidx.navigation.fragment.findNavController
 import androidx.navigation.ui.setupWithNavController
 import com.androiddevs.mvvmnewsapp.R
+import com.androiddevs.mvvmnewsapp.db.ArticleDatabase
+import com.androiddevs.mvvmnewsapp.repository.NewsRepository
 import kotlinx.android.synthetic.main.activity_news.*
 
 class NewsActivity : AppCompatActivity() {
 
+    lateinit var viewModel: NewsViewModel
+
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_news)
 
+        val newsRepository = NewsRepository(ArticleDatabase(this))
+        val viewModelProviderFactory = NewsViewModelProviderFactory(newsRepository)
+        viewModel = ViewModelProvider(this, viewModelProviderFactory).get(NewsViewModel::class.java)
         bottomNavigationView.setupWithNavController(newsNavHostFragment.findNavController())
     }
 }
diff --git a/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/NewsViewModel.kt b/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/NewsViewModel.kt
new file mode 100644
index 00000000..00ae701e
--- /dev/null
+++ b/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/NewsViewModel.kt
@@ -0,0 +1,37 @@
+package com.androiddevs.mvvmnewsapp.ui
+
+import androidx.lifecycle.MutableLiveData
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import com.androiddevs.mvvmnewsapp.models.NewsResponse
+import com.androiddevs.mvvmnewsapp.repository.NewsRepository
+import com.androiddevs.mvvmnewsapp.util.Resource
+import kotlinx.coroutines.launch
+import retrofit2.Response
+
+class NewsViewModel(
+    val newsRepository: NewsRepository
+) : ViewModel() {
+
+    val breakingNews: MutableLiveData<Resource<NewsResponse>> = MutableLiveData()
+    var breakingNewsPage = 1
+
+    init {
+        getBreakingNews("us")
+    }
+
+    fun getBreakingNews(countryCode: String) = viewModelScope.launch {
+        breakingNews.postValue(Resource.Loading())
+        val response = newsRepository.getBreakingNews(countryCode, breakingNewsPage)
+        breakingNews.postValue(handleBreakingNewsResponse(response))
+    }
+
+    private fun handleBreakingNewsResponse(response: Response<NewsResponse>) : Resource<NewsResponse> {
+        if(response.isSuccessful) {
+            response.body()?.let { resultResponse ->
+                return Resource.Success(resultResponse)
+            }
+        }
+        return Resource.Error(response.message())
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/NewsViewModelProviderFactory.kt b/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/NewsViewModelProviderFactory.kt
new file mode 100644
index 00000000..7447ec98
--- /dev/null
+++ b/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/NewsViewModelProviderFactory.kt
@@ -0,0 +1,14 @@
+package com.androiddevs.mvvmnewsapp.ui
+
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.ViewModelProvider
+import com.androiddevs.mvvmnewsapp.repository.NewsRepository
+
+class NewsViewModelProviderFactory(
+    val newsRepository: NewsRepository
+) : ViewModelProvider.Factory {
+
+    override fun <T : ViewModel?> create(modelClass: Class<T>): T {
+        return NewsViewModel(newsRepository) as T
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/fragments/ArticleFragment.kt b/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/fragments/ArticleFragment.kt
index b30c4952..6ccbb2d7 100644
--- a/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/fragments/ArticleFragment.kt
+++ b/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/fragments/ArticleFragment.kt
@@ -1,7 +1,18 @@
 package com.androiddevs.mvvmnewsapp.ui.fragments
 
+import android.os.Bundle
+import android.view.View
 import androidx.fragment.app.Fragment
 import com.androiddevs.mvvmnewsapp.R
+import com.androiddevs.mvvmnewsapp.ui.NewsActivity
+import com.androiddevs.mvvmnewsapp.ui.NewsViewModel
 
 class ArticleFragment : Fragment(R.layout.fragment_article) {
+
+    lateinit var viewModel: NewsViewModel
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+        viewModel = (activity as NewsActivity).viewModel
+    }
 }
\ No newline at end of file
diff --git a/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/fragments/BreakingNewsFragment.kt b/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/fragments/BreakingNewsFragment.kt
index 3c18c51b..20e3eaab 100644
--- a/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/fragments/BreakingNewsFragment.kt
+++ b/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/fragments/BreakingNewsFragment.kt
@@ -1,7 +1,64 @@
 package com.androiddevs.mvvmnewsapp.ui.fragments
 
+import android.os.Bundle
+import android.util.Log
+import android.view.View
 import androidx.fragment.app.Fragment
+import androidx.lifecycle.Observer
+import androidx.recyclerview.widget.LinearLayoutManager
 import com.androiddevs.mvvmnewsapp.R
+import com.androiddevs.mvvmnewsapp.adapters.NewsAdapter
+import com.androiddevs.mvvmnewsapp.ui.NewsActivity
+import com.androiddevs.mvvmnewsapp.ui.NewsViewModel
+import com.androiddevs.mvvmnewsapp.util.Resource
+import kotlinx.android.synthetic.main.fragment_breaking_news.*
 
 class BreakingNewsFragment : Fragment(R.layout.fragment_breaking_news) {
+
+    lateinit var viewModel: NewsViewModel
+    lateinit var newsAdapter: NewsAdapter
+
+    val TAG = "BreakingNewsFragment"
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+        viewModel = (activity as NewsActivity).viewModel
+        setupRecyclerView()
+
+        viewModel.breakingNews.observe(viewLifecycleOwner, Observer { response ->
+            when(response) {
+                is Resource.Success -> {
+                    hideProgressBar()
+                    response.data?.let { newsResponse ->
+                        newsAdapter.differ.submitList(newsResponse.articles)
+                    }
+                }
+                is Resource.Error -> {
+                    hideProgressBar()
+                    response.message?.let { message ->
+                        Log.e(TAG, "An error occured: $message")
+                    }
+                }
+                is Resource.Loading -> {
+                    showProgressBar()
+                }
+            }
+        })
+    }
+
+    private fun hideProgressBar() {
+        paginationProgressBar.visibility = View.INVISIBLE
+    }
+
+    private fun showProgressBar() {
+        paginationProgressBar.visibility = View.VISIBLE
+    }
+
+    private fun setupRecyclerView() {
+        newsAdapter = NewsAdapter()
+        rvBreakingNews.apply {
+            adapter = newsAdapter
+            layoutManager = LinearLayoutManager(activity)
+        }
+    }
 }
\ No newline at end of file
diff --git a/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/fragments/SavedNewsFragment.kt b/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/fragments/SavedNewsFragment.kt
index 623c1b23..0c7f234d 100644
--- a/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/fragments/SavedNewsFragment.kt
+++ b/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/fragments/SavedNewsFragment.kt
@@ -1,7 +1,19 @@
 package com.androiddevs.mvvmnewsapp.ui.fragments
 
+import android.os.Bundle
+import android.view.View
 import androidx.fragment.app.Fragment
 import com.androiddevs.mvvmnewsapp.R
+import com.androiddevs.mvvmnewsapp.ui.NewsActivity
+import com.androiddevs.mvvmnewsapp.ui.NewsViewModel
 
 class SavedNewsFragment : Fragment(R.layout.fragment_saved_news) {
+
+    lateinit var viewModel: NewsViewModel
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+        viewModel = (activity as NewsActivity).viewModel
+
+    }
 }
\ No newline at end of file
diff --git a/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/fragments/SearchNewsFragment.kt b/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/fragments/SearchNewsFragment.kt
index 2c57ef7d..ab024e62 100644
--- a/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/fragments/SearchNewsFragment.kt
+++ b/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/fragments/SearchNewsFragment.kt
@@ -1,7 +1,18 @@
 package com.androiddevs.mvvmnewsapp.ui.fragments
 
+import android.os.Bundle
+import android.view.View
 import androidx.fragment.app.Fragment
 import com.androiddevs.mvvmnewsapp.R
+import com.androiddevs.mvvmnewsapp.ui.NewsActivity
+import com.androiddevs.mvvmnewsapp.ui.NewsViewModel
 
 class SearchNewsFragment : Fragment(R.layout.fragment_search_news) {
+
+    lateinit var viewModel: NewsViewModel
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+        viewModel = (activity as NewsActivity).viewModel
+    }
 }
\ No newline at end of file
diff --git a/app/src/main/java/com/androiddevs/mvvmnewsapp/util/Resource.kt b/app/src/main/java/com/androiddevs/mvvmnewsapp/util/Resource.kt
new file mode 100644
index 00000000..848c3c75
--- /dev/null
+++ b/app/src/main/java/com/androiddevs/mvvmnewsapp/util/Resource.kt
@@ -0,0 +1,10 @@
+package com.androiddevs.mvvmnewsapp.util
+
+sealed class Resource<T>(
+    val data: T? = null,
+    val message: String? = null
+) {
+    class Success<T>(data: T) : Resource<T>(data)
+    class Error<T>(message: String, data: T? = null) : Resource<T>(data, message)
+    class Loading<T> : Resource<T>()
+}
\ No newline at end of file

From db60ba7615911461e01b70a61e9c895069ec9410 Mon Sep 17 00:00:00 2001
From: Philipp <philipp.lackner@yahoo.de>
Date: Tue, 14 Apr 2020 14:03:10 +0200
Subject: [PATCH 7/9] searching for news works

---
 .../mvvmnewsapp/repository/NewsRepository.kt  |  3 +
 .../mvvmnewsapp/ui/NewsViewModel.kt           | 32 +++++++++-
 .../ui/fragments/SearchNewsFragment.kt        | 64 +++++++++++++++++++
 .../androiddevs/mvvmnewsapp/util/Constants.kt |  1 +
 4 files changed, 99 insertions(+), 1 deletion(-)

diff --git a/app/src/main/java/com/androiddevs/mvvmnewsapp/repository/NewsRepository.kt b/app/src/main/java/com/androiddevs/mvvmnewsapp/repository/NewsRepository.kt
index dffc3c9e..9c914211 100644
--- a/app/src/main/java/com/androiddevs/mvvmnewsapp/repository/NewsRepository.kt
+++ b/app/src/main/java/com/androiddevs/mvvmnewsapp/repository/NewsRepository.kt
@@ -8,4 +8,7 @@ class NewsRepository(
 ) {
     suspend fun getBreakingNews(countryCode: String, pageNumber: Int) =
         RetrofitInstance.api.getBreakingNews(countryCode, pageNumber)
+
+    suspend fun searchNews(searchQuery: String, pageNumber: Int) =
+        RetrofitInstance.api.searchForNews(searchQuery, pageNumber)
 }
\ No newline at end of file
diff --git a/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/NewsViewModel.kt b/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/NewsViewModel.kt
index 00ae701e..97fa4e99 100644
--- a/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/NewsViewModel.kt
+++ b/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/NewsViewModel.kt
@@ -16,6 +16,9 @@ class NewsViewModel(
     val breakingNews: MutableLiveData<Resource<NewsResponse>> = MutableLiveData()
     var breakingNewsPage = 1
 
+    val searchNews: MutableLiveData<Resource<NewsResponse>> = MutableLiveData()
+    var searchNewsPage = 1
+
     init {
         getBreakingNews("us")
     }
@@ -26,6 +29,12 @@ class NewsViewModel(
         breakingNews.postValue(handleBreakingNewsResponse(response))
     }
 
+    fun searchNews(searchQuery: String) = viewModelScope.launch {
+        searchNews.postValue(Resource.Loading())
+        val response = newsRepository.searchNews(searchQuery, searchNewsPage)
+        searchNews.postValue(handleSearchNewsResponse(response))
+    }
+
     private fun handleBreakingNewsResponse(response: Response<NewsResponse>) : Resource<NewsResponse> {
         if(response.isSuccessful) {
             response.body()?.let { resultResponse ->
@@ -34,4 +43,25 @@ class NewsViewModel(
         }
         return Resource.Error(response.message())
     }
-}
\ No newline at end of file
+
+    private fun handleSearchNewsResponse(response: Response<NewsResponse>) : Resource<NewsResponse> {
+        if(response.isSuccessful) {
+            response.body()?.let { resultResponse ->
+                return Resource.Success(resultResponse)
+            }
+        }
+        return Resource.Error(response.message())
+    }
+}
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/fragments/SearchNewsFragment.kt b/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/fragments/SearchNewsFragment.kt
index ab024e62..b4943d0d 100644
--- a/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/fragments/SearchNewsFragment.kt
+++ b/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/fragments/SearchNewsFragment.kt
@@ -1,18 +1,82 @@
 package com.androiddevs.mvvmnewsapp.ui.fragments
 
 import android.os.Bundle
+import android.util.Log
 import android.view.View
+import androidx.core.widget.addTextChangedListener
 import androidx.fragment.app.Fragment
+import androidx.lifecycle.Observer
+import androidx.recyclerview.widget.LinearLayoutManager
 import com.androiddevs.mvvmnewsapp.R
+import com.androiddevs.mvvmnewsapp.adapters.NewsAdapter
 import com.androiddevs.mvvmnewsapp.ui.NewsActivity
 import com.androiddevs.mvvmnewsapp.ui.NewsViewModel
+import com.androiddevs.mvvmnewsapp.util.Constants.Companion.SEARCH_NEWS_TIME_DELAY
+import com.androiddevs.mvvmnewsapp.util.Resource
+import kotlinx.android.synthetic.main.fragment_search_news.*
+import kotlinx.coroutines.Job
+import kotlinx.coroutines.MainScope
+import kotlinx.coroutines.delay
+import kotlinx.coroutines.launch
 
 class SearchNewsFragment : Fragment(R.layout.fragment_search_news) {
 
     lateinit var viewModel: NewsViewModel
+    lateinit var newsAdapter: NewsAdapter
+    val TAG = "SearchNewsFragment"
 
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
         viewModel = (activity as NewsActivity).viewModel
+        setupRecyclerView()
+
+        var job: Job? = null
+        etSearch.addTextChangedListener { editable ->
+            job?.cancel()
+            job = MainScope().launch {
+                delay(SEARCH_NEWS_TIME_DELAY)
+                editable?.let {
+                    if(editable.toString().isNotEmpty()) {
+                        viewModel.searchNews(editable.toString())
+                    }
+                }
+            }
+        }
+
+        viewModel.searchNews.observe(viewLifecycleOwner, Observer { response ->
+            when(response) {
+                is Resource.Success -> {
+                    hideProgressBar()
+                    response.data?.let { newsResponse ->
+                        newsAdapter.differ.submitList(newsResponse.articles)
+                    }
+                }
+                is Resource.Error -> {
+                    hideProgressBar()
+                    response.message?.let { message ->
+                        Log.e(TAG, "An error occured: $message")
+                    }
+                }
+                is Resource.Loading -> {
+                    showProgressBar()
+                }
+            }
+        })
+    }
+
+    private fun hideProgressBar() {
+        paginationProgressBar.visibility = View.INVISIBLE
+    }
+
+    private fun showProgressBar() {
+        paginationProgressBar.visibility = View.VISIBLE
+    }
+
+    private fun setupRecyclerView() {
+        newsAdapter = NewsAdapter()
+        rvSearchNews.apply {
+            adapter = newsAdapter
+            layoutManager = LinearLayoutManager(activity)
+        }
     }
 }
\ No newline at end of file
diff --git a/app/src/main/java/com/androiddevs/mvvmnewsapp/util/Constants.kt b/app/src/main/java/com/androiddevs/mvvmnewsapp/util/Constants.kt
index d7b4b348..900d15b7 100644
--- a/app/src/main/java/com/androiddevs/mvvmnewsapp/util/Constants.kt
+++ b/app/src/main/java/com/androiddevs/mvvmnewsapp/util/Constants.kt
@@ -4,5 +4,6 @@ class Constants {
     companion object {
         const val API_KEY = "6953a7421bb749c589e687746c85eee8"
         const val BASE_URL = "https://newsapi.org"
+        const val SEARCH_NEWS_TIME_DELAY = 500L
     }
 }
\ No newline at end of file

From 7143bb48bfed33a399b0809fa4943cb2ce45c967 Mon Sep 17 00:00:00 2001
From: Philipp <philipp.lackner@yahoo.de>
Date: Tue, 14 Apr 2020 14:50:26 +0200
Subject: [PATCH 8/9] articles can be opened in a webview

---
 .../androiddevs/mvvmnewsapp/models/Article.kt |  3 ++-
 .../ui/fragments/ArticleFragment.kt           |  9 +++++++
 .../ui/fragments/BreakingNewsFragment.kt      | 11 +++++++++
 .../ui/fragments/SavedNewsFragment.kt         | 24 +++++++++++++++++++
 .../ui/fragments/SearchNewsFragment.kt        | 11 +++++++++
 .../main/res/navigation/news_nav_graph.xml    |  6 ++++-
 6 files changed, 62 insertions(+), 2 deletions(-)

diff --git a/app/src/main/java/com/androiddevs/mvvmnewsapp/models/Article.kt b/app/src/main/java/com/androiddevs/mvvmnewsapp/models/Article.kt
index 141f0eff..3ec2406c 100644
--- a/app/src/main/java/com/androiddevs/mvvmnewsapp/models/Article.kt
+++ b/app/src/main/java/com/androiddevs/mvvmnewsapp/models/Article.kt
@@ -3,6 +3,7 @@ package com.androiddevs.mvvmnewsapp.models
 
 import androidx.room.Entity
 import androidx.room.PrimaryKey
+import java.io.Serializable
 
 @Entity(
     tableName = "articles"
@@ -18,4 +19,4 @@ data class Article(
     val title: String,
     val url: String,
     val urlToImage: String
-)
\ No newline at end of file
+) : Serializable
\ No newline at end of file
diff --git a/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/fragments/ArticleFragment.kt b/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/fragments/ArticleFragment.kt
index 6ccbb2d7..65cac144 100644
--- a/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/fragments/ArticleFragment.kt
+++ b/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/fragments/ArticleFragment.kt
@@ -2,17 +2,26 @@ package com.androiddevs.mvvmnewsapp.ui.fragments
 
 import android.os.Bundle
 import android.view.View
+import android.webkit.WebViewClient
 import androidx.fragment.app.Fragment
+import androidx.navigation.fragment.navArgs
 import com.androiddevs.mvvmnewsapp.R
 import com.androiddevs.mvvmnewsapp.ui.NewsActivity
 import com.androiddevs.mvvmnewsapp.ui.NewsViewModel
+import kotlinx.android.synthetic.main.fragment_article.*
 
 class ArticleFragment : Fragment(R.layout.fragment_article) {
 
     lateinit var viewModel: NewsViewModel
+    val args: ArticleFragmentArgs by navArgs()
 
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
         viewModel = (activity as NewsActivity).viewModel
+        val article = args.article
+        webView.apply {
+            webViewClient = WebViewClient()
+            loadUrl(article.url)
+        }
     }
 }
\ No newline at end of file
diff --git a/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/fragments/BreakingNewsFragment.kt b/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/fragments/BreakingNewsFragment.kt
index 20e3eaab..348f60ef 100644
--- a/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/fragments/BreakingNewsFragment.kt
+++ b/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/fragments/BreakingNewsFragment.kt
@@ -5,6 +5,7 @@ import android.util.Log
 import android.view.View
 import androidx.fragment.app.Fragment
 import androidx.lifecycle.Observer
+import androidx.navigation.fragment.findNavController
 import androidx.recyclerview.widget.LinearLayoutManager
 import com.androiddevs.mvvmnewsapp.R
 import com.androiddevs.mvvmnewsapp.adapters.NewsAdapter
@@ -25,6 +26,16 @@ class BreakingNewsFragment : Fragment(R.layout.fragment_breaking_news) {
         viewModel = (activity as NewsActivity).viewModel
         setupRecyclerView()
 
+        newsAdapter.setOnItemClickListener {
+            val bundle = Bundle().apply {
+                putSerializable("article", it)
+            }
+            findNavController().navigate(
+                R.id.action_breakingNewsFragment_to_articleFragment,
+                bundle
+            )
+        }
+
         viewModel.breakingNews.observe(viewLifecycleOwner, Observer { response ->
             when(response) {
                 is Resource.Success -> {
diff --git a/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/fragments/SavedNewsFragment.kt b/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/fragments/SavedNewsFragment.kt
index 0c7f234d..8f5e8dbc 100644
--- a/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/fragments/SavedNewsFragment.kt
+++ b/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/fragments/SavedNewsFragment.kt
@@ -3,17 +3,41 @@ package com.androiddevs.mvvmnewsapp.ui.fragments
 import android.os.Bundle
 import android.view.View
 import androidx.fragment.app.Fragment
+import androidx.navigation.fragment.findNavController
+import androidx.recyclerview.widget.LinearLayoutManager
 import com.androiddevs.mvvmnewsapp.R
+import com.androiddevs.mvvmnewsapp.adapters.NewsAdapter
 import com.androiddevs.mvvmnewsapp.ui.NewsActivity
 import com.androiddevs.mvvmnewsapp.ui.NewsViewModel
+import kotlinx.android.synthetic.main.fragment_breaking_news.*
+import kotlinx.android.synthetic.main.fragment_saved_news.*
 
 class SavedNewsFragment : Fragment(R.layout.fragment_saved_news) {
 
     lateinit var viewModel: NewsViewModel
+    lateinit var newsAdapter: NewsAdapter
 
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
         viewModel = (activity as NewsActivity).viewModel
+        setupRecyclerView()
 
+        newsAdapter.setOnItemClickListener {
+            val bundle = Bundle().apply {
+                putSerializable("article", it)
+            }
+            findNavController().navigate(
+                R.id.action_savedNewsFragment_to_articleFragment,
+                bundle
+            )
+        }
+    }
+
+    private fun setupRecyclerView() {
+        newsAdapter = NewsAdapter()
+        rvSavedNews.apply {
+            adapter = newsAdapter
+            layoutManager = LinearLayoutManager(activity)
+        }
     }
 }
\ No newline at end of file
diff --git a/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/fragments/SearchNewsFragment.kt b/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/fragments/SearchNewsFragment.kt
index b4943d0d..0e417ad2 100644
--- a/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/fragments/SearchNewsFragment.kt
+++ b/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/fragments/SearchNewsFragment.kt
@@ -6,6 +6,7 @@ import android.view.View
 import androidx.core.widget.addTextChangedListener
 import androidx.fragment.app.Fragment
 import androidx.lifecycle.Observer
+import androidx.navigation.fragment.findNavController
 import androidx.recyclerview.widget.LinearLayoutManager
 import com.androiddevs.mvvmnewsapp.R
 import com.androiddevs.mvvmnewsapp.adapters.NewsAdapter
@@ -30,6 +31,16 @@ class SearchNewsFragment : Fragment(R.layout.fragment_search_news) {
         viewModel = (activity as NewsActivity).viewModel
         setupRecyclerView()
 
+        newsAdapter.setOnItemClickListener {
+            val bundle = Bundle().apply {
+                putSerializable("article", it)
+            }
+            findNavController().navigate(
+                R.id.action_searchNewsFragment_to_articleFragment,
+                bundle
+            )
+        }
+
         var job: Job? = null
         etSearch.addTextChangedListener { editable ->
             job?.cancel()
diff --git a/app/src/main/res/navigation/news_nav_graph.xml b/app/src/main/res/navigation/news_nav_graph.xml
index cc171bb2..8361fd2a 100644
--- a/app/src/main/res/navigation/news_nav_graph.xml
+++ b/app/src/main/res/navigation/news_nav_graph.xml
@@ -42,5 +42,9 @@
     <fragment
         android:id="@+id/articleFragment"
         android:name="com.androiddevs.mvvmnewsapp.ui.fragments.ArticleFragment"
-        android:label="ArticleFragment" />
+        android:label="ArticleFragment" >
+        <argument
+            android:name="article"
+            app:argType="com.androiddevs.mvvmnewsapp.models.Article" />
+    </fragment>
 </navigation>
\ No newline at end of file

From e7c713837b824ef9c2fcbc90647ba2754d2b87a9 Mon Sep 17 00:00:00 2001
From: Philipp <philipp.lackner@yahoo.de>
Date: Wed, 15 Apr 2020 16:12:41 +0200
Subject: [PATCH 9/9] adding and deleting articles works

---
 .../mvvmnewsapp/adapters/NewsAdapter.kt       | 18 ++-------
 .../androiddevs/mvvmnewsapp/db/ArticleDao.kt  |  3 +-
 .../mvvmnewsapp/repository/NewsRepository.kt  |  7 ++++
 .../mvvmnewsapp/ui/NewsViewModel.kt           | 11 ++++++
 .../ui/fragments/ArticleFragment.kt           |  6 +++
 .../ui/fragments/SavedNewsFragment.kt         | 37 +++++++++++++++++++
 6 files changed, 66 insertions(+), 16 deletions(-)

diff --git a/app/src/main/java/com/androiddevs/mvvmnewsapp/adapters/NewsAdapter.kt b/app/src/main/java/com/androiddevs/mvvmnewsapp/adapters/NewsAdapter.kt
index a7689979..f05a1d52 100644
--- a/app/src/main/java/com/androiddevs/mvvmnewsapp/adapters/NewsAdapter.kt
+++ b/app/src/main/java/com/androiddevs/mvvmnewsapp/adapters/NewsAdapter.kt
@@ -13,13 +13,11 @@ import kotlinx.android.synthetic.main.item_article_preview.view.*
 
 class NewsAdapter : RecyclerView.Adapter<NewsAdapter.ArticleViewHolder>() {
 
-    private var onItemClickListener: ((Article) -> Unit)? = null
-
     inner class ArticleViewHolder(itemView: View): RecyclerView.ViewHolder(itemView)
 
     private val differCallback = object : DiffUtil.ItemCallback<Article>() {
         override fun areItemsTheSame(oldItem: Article, newItem: Article): Boolean {
-            return oldItem === newItem
+            return oldItem.url == newItem.url
         }
 
         override fun areContentsTheSame(oldItem: Article, newItem: Article): Boolean {
@@ -43,6 +41,8 @@ class NewsAdapter : RecyclerView.Adapter<NewsAdapter.ArticleViewHolder>() {
         return differ.currentList.size
     }
 
+    private var onItemClickListener: ((Article) -> Unit)? = null
+
     override fun onBindViewHolder(holder: ArticleViewHolder, position: Int) {
         val article = differ.currentList[position]
         holder.itemView.apply {
@@ -58,18 +58,6 @@ class NewsAdapter : RecyclerView.Adapter<NewsAdapter.ArticleViewHolder>() {
         }
     }
 
-    fun addItem(article: Article, position: Int) {
-        val curList = differ.currentList.toMutableList()
-        curList.add(position, article)
-        differ.submitList(curList)
-    }
-
-    fun deleteArticle(article: Article) {
-        val curList = differ.currentList.toMutableList()
-        curList.remove(article)
-        differ.submitList(curList)
-    }
-
     fun setOnItemClickListener(listener: (Article) -> Unit) {
         onItemClickListener = listener
     }
diff --git a/app/src/main/java/com/androiddevs/mvvmnewsapp/db/ArticleDao.kt b/app/src/main/java/com/androiddevs/mvvmnewsapp/db/ArticleDao.kt
index 2f00ee40..557baddc 100644
--- a/app/src/main/java/com/androiddevs/mvvmnewsapp/db/ArticleDao.kt
+++ b/app/src/main/java/com/androiddevs/mvvmnewsapp/db/ArticleDao.kt
@@ -1,5 +1,6 @@
 package com.androiddevs.mvvmnewsapp.db
 
+import androidx.lifecycle.LiveData
 import androidx.room.*
 import com.androiddevs.mvvmnewsapp.models.Article
 
@@ -10,7 +11,7 @@ interface ArticleDao {
     suspend fun upsert(article: Article): Long
 
     @Query("SELECT * FROM articles")
-    suspend fun getAllArticles(): List<Article>
+    fun getAllArticles(): LiveData<List<Article>>
 
     @Delete
     suspend fun deleteArticle(article: Article)
diff --git a/app/src/main/java/com/androiddevs/mvvmnewsapp/repository/NewsRepository.kt b/app/src/main/java/com/androiddevs/mvvmnewsapp/repository/NewsRepository.kt
index 9c914211..19f0279c 100644
--- a/app/src/main/java/com/androiddevs/mvvmnewsapp/repository/NewsRepository.kt
+++ b/app/src/main/java/com/androiddevs/mvvmnewsapp/repository/NewsRepository.kt
@@ -2,6 +2,7 @@ package com.androiddevs.mvvmnewsapp.repository
 
 import com.androiddevs.mvvmnewsapp.api.RetrofitInstance
 import com.androiddevs.mvvmnewsapp.db.ArticleDatabase
+import com.androiddevs.mvvmnewsapp.models.Article
 
 class NewsRepository(
     val db: ArticleDatabase
@@ -11,4 +12,10 @@ class NewsRepository(
 
     suspend fun searchNews(searchQuery: String, pageNumber: Int) =
         RetrofitInstance.api.searchForNews(searchQuery, pageNumber)
+
+    suspend fun upsert(article: Article) = db.getArticleDao().upsert(article)
+
+    fun getSavedNews() = db.getArticleDao().getAllArticles()
+
+    suspend fun deleteArticle(article: Article) = db.getArticleDao().deleteArticle(article)
 }
\ No newline at end of file
diff --git a/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/NewsViewModel.kt b/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/NewsViewModel.kt
index 97fa4e99..9b670fd7 100644
--- a/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/NewsViewModel.kt
+++ b/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/NewsViewModel.kt
@@ -3,6 +3,7 @@ package com.androiddevs.mvvmnewsapp.ui
 import androidx.lifecycle.MutableLiveData
 import androidx.lifecycle.ViewModel
 import androidx.lifecycle.viewModelScope
+import com.androiddevs.mvvmnewsapp.models.Article
 import com.androiddevs.mvvmnewsapp.models.NewsResponse
 import com.androiddevs.mvvmnewsapp.repository.NewsRepository
 import com.androiddevs.mvvmnewsapp.util.Resource
@@ -52,6 +53,16 @@ class NewsViewModel(
         }
         return Resource.Error(response.message())
     }
+
+    fun saveArticle(article: Article) = viewModelScope.launch {
+        newsRepository.upsert(article)
+    }
+
+    fun getSavedNews() = newsRepository.getSavedNews()
+
+    fun deleteArticle(article: Article) = viewModelScope.launch {
+        newsRepository.deleteArticle(article)
+    }
 }
 
 
diff --git a/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/fragments/ArticleFragment.kt b/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/fragments/ArticleFragment.kt
index 65cac144..2c7876af 100644
--- a/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/fragments/ArticleFragment.kt
+++ b/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/fragments/ArticleFragment.kt
@@ -8,6 +8,7 @@ import androidx.navigation.fragment.navArgs
 import com.androiddevs.mvvmnewsapp.R
 import com.androiddevs.mvvmnewsapp.ui.NewsActivity
 import com.androiddevs.mvvmnewsapp.ui.NewsViewModel
+import com.google.android.material.snackbar.Snackbar
 import kotlinx.android.synthetic.main.fragment_article.*
 
 class ArticleFragment : Fragment(R.layout.fragment_article) {
@@ -23,5 +24,10 @@ class ArticleFragment : Fragment(R.layout.fragment_article) {
             webViewClient = WebViewClient()
             loadUrl(article.url)
         }
+
+        fab.setOnClickListener {
+            viewModel.saveArticle(article)
+            Snackbar.make(view, "Article saved successfully", Snackbar.LENGTH_SHORT).show()
+        }
     }
 }
\ No newline at end of file
diff --git a/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/fragments/SavedNewsFragment.kt b/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/fragments/SavedNewsFragment.kt
index 8f5e8dbc..ea727ab7 100644
--- a/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/fragments/SavedNewsFragment.kt
+++ b/app/src/main/java/com/androiddevs/mvvmnewsapp/ui/fragments/SavedNewsFragment.kt
@@ -3,12 +3,16 @@ package com.androiddevs.mvvmnewsapp.ui.fragments
 import android.os.Bundle
 import android.view.View
 import androidx.fragment.app.Fragment
+import androidx.lifecycle.Observer
 import androidx.navigation.fragment.findNavController
+import androidx.recyclerview.widget.ItemTouchHelper
 import androidx.recyclerview.widget.LinearLayoutManager
+import androidx.recyclerview.widget.RecyclerView
 import com.androiddevs.mvvmnewsapp.R
 import com.androiddevs.mvvmnewsapp.adapters.NewsAdapter
 import com.androiddevs.mvvmnewsapp.ui.NewsActivity
 import com.androiddevs.mvvmnewsapp.ui.NewsViewModel
+import com.google.android.material.snackbar.Snackbar
 import kotlinx.android.synthetic.main.fragment_breaking_news.*
 import kotlinx.android.synthetic.main.fragment_saved_news.*
 
@@ -31,6 +35,39 @@ class SavedNewsFragment : Fragment(R.layout.fragment_saved_news) {
                 bundle
             )
         }
+
+        val itemTouchHelperCallback = object : ItemTouchHelper.SimpleCallback(
+            ItemTouchHelper.UP or ItemTouchHelper.DOWN,
+            ItemTouchHelper.LEFT or ItemTouchHelper.RIGHT
+        ) {
+            override fun onMove(
+                recyclerView: RecyclerView,
+                viewHolder: RecyclerView.ViewHolder,
+                target: RecyclerView.ViewHolder
+            ): Boolean {
+                return true
+            }
+
+            override fun onSwiped(viewHolder: RecyclerView.ViewHolder, direction: Int) {
+                val position = viewHolder.adapterPosition
+                val article = newsAdapter.differ.currentList[position]
+                viewModel.deleteArticle(article)
+                Snackbar.make(view, "Successfully deleted article", Snackbar.LENGTH_LONG).apply {
+                    setAction("Undo") {
+                        viewModel.saveArticle(article)
+                    }
+                    show()
+                }
+            }
+        }
+
+        ItemTouchHelper(itemTouchHelperCallback).apply {
+            attachToRecyclerView(rvSavedNews)
+        }
+
+        viewModel.getSavedNews().observe(viewLifecycleOwner, Observer { articles ->
+            newsAdapter.differ.submitList(articles)
+        })
     }
 
     private fun setupRecyclerView() {