V1

ListViewExample/app/build.gradle

@@ -18,7 +18,17 @@ android {
     }
 }
 
+repositories {
+    mavenCentral()
+}
+
 dependencies {
+    implementation 'org.slf4j:slf4j-api:1.7.25'
+    implementation 'ch.qos.logback:logback-classic:1.0.9'
+    implementation 'ch.qos.logback:logback-core:1.0.9'
+    implementation 'com.fasterxml.jackson.core:jackson-databind:2.7.0'
+    implementation 'org.projectlombok:lombok:1.18.4'
+    annotationProcessor 'org.projectlombok:lombok:1.18.4'
     implementation fileTree(dir: 'libs', include: ['*.jar'])
     implementation 'com.android.support:appcompat-v7:28.0.0'
     implementation 'com.android.support.constraint:constraint-layout:1.1.3'

ListViewExample/app/src/main/AndroidManifest.xml

@@ -18,4 +18,5 @@
         </activity>
     </application>
 
+    <uses-permission android:name="android.permission.INTERNET"/>
 </manifest>

ListViewExample/app/src/main/java/com/loot/markhardwick/listviewexample/MainActivity.java

@@ -1,20 +1,114 @@
 package com.loot.markhardwick.listviewexample;
 
-import android.support.v7.app.AppCompatActivity;
+import android.annotation.SuppressLint;
+import android.app.Activity;
+import android.content.Context;
 import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.BaseAdapter;
+import android.widget.ListView;
+import android.widget.ProgressBar;
+import android.widget.TextView;
 
-import com.loot.markhardwick.listviewexample.ui.main.MainFragment;
+import com.loot.markhardwick.listviewexample.backend.main.Fetcher;
+import com.loot.markhardwick.listviewexample.backend.main.User;
 
-public class MainActivity extends AppCompatActivity {
+public class MainActivity extends Activity {
+    ListAdapter adapter;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.main_activity);
-        if (savedInstanceState == null) {
-            getSupportFragmentManager().beginTransaction()
-                    .replace(R.id.container, MainFragment.newInstance())
-                    .commitNow();
+
+        ListView listView = findViewById(R.id.listView);
+        ProgressBar progressBar = findViewById(R.id.progressBar);
+        listView.setEmptyView(progressBar);
+
+        adapter = new ListAdapter(this, Fetcher.getUsers());
+        listView.setAdapter(adapter);
+
+        /* Not needed for task will flesh out later
+        listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
+            @Override
+            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
+
+            }
+        });
+        */
+
+        Fetcher fetcher = new Fetcher(new Fetcher.FetcherResponse() {
+            @Override
+            public void processFinish(User[] newUserList) {
+                adapter.updateUsers(newUserList);
+            }
+        });
+        fetcher.execute();
+    }
+
+    private class ListAdapter extends BaseAdapter {
+        Context context;
+        User[] users;
+        private LayoutInflater inflater;
+
+        ListAdapter(Context context, User[] users) {
+            this.context = context;
+            this.users = users;
+            inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
+        }
+
+        void updateUsers(User[] newUsers){
+            users = newUsers;
+            this.notifyDataSetChanged();
+        }
+
+        @Override
+        public int getCount() {
+            return users.length;
+        }
+
+        @Override
+        public Object getItem(int position) {
+            return users[position];
+        }
+
+        @Override
+        public long getItemId(int position) {
+            return position;
+        }
+
+        @SuppressLint("DefaultLocale")
+        @Override
+        public View getView(int position, View convertView, ViewGroup parent) {
+            View toReturn = convertView;
+            if(toReturn == null){
+                toReturn = inflater.inflate(R.layout.row_just_name, null);
+            }
+            User user = users[position];
+            TextView nameField = toReturn.findViewById(R.id.name);
+            nameField.setText(String.format("%s", user.getName()));
+
+            /* Reread task was only for name and surname
+            TextView idField = toReturn.findViewById(R.id.idNumber);
+            idField.setText(String.format("%s%d", getString(R.string.id), user.getId()));
+            TextView usernameField = toReturn.findViewById(R.id.username);
+            usernameField.setText(String.format("%s%s", getString(R.string.username), user.getUsername()));
+            TextView emailField = toReturn.findViewById(R.id.email);
+            emailField.setText(String.format("%s%s", getString(R.string.email), user.getEmail()));
+            TextView addressField = toReturn.findViewById(R.id.address);
+            addressField.setText(String.format("%s%s", getString(R.string.address), user.getAddress().toString()));
+            TextView phoneField = toReturn.findViewById(R.id.phone);
+            phoneField.setText(String.format("%s%s", getString(R.string.phone), user.getPhone()));
+            TextView websiteField = toReturn.findViewById(R.id.website);
+            websiteField.setText(String.format("%s%s", getString(R.string.website), user.getWebsite()));
+            TextView companyField = toReturn.findViewById(R.id.company);
+            companyField.setText(String.format("%s%s", getString(R.string.company), user.getCompany().toString()));
+            */
+            return toReturn;
         }
     }
 }
+
+

ListViewExample/app/src/main/java/com/loot/markhardwick/listviewexample/backend/main/Fetcher.java

@@ -0,0 +1,93 @@
+package com.loot.markhardwick.listviewexample.backend.main;
+
+import android.os.AsyncTask;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.HttpURLConnection;
+import java.net.URL;
+import java.util.Arrays;
+
+import lombok.extern.slf4j.Slf4j;
+
+/**
+ * Class to grab json array of users from:
+ * https://jsonplaceholder.typicode.com/users
+ * and turn response into an array of objects
+ */
+
+@Slf4j
+public class Fetcher extends AsyncTask<Void, Void, User[]> {
+   static User[] users = new User[0];
+   private FetcherResponse delegate;
+
+    public Fetcher(FetcherResponse delegate){
+        this.delegate = delegate;
+    }
+
+    static void fetchUsers() {
+        log.debug("fetchUsers() called");
+        URL url;
+        HttpURLConnection con;
+        try {
+            String urlAddress = "https://jsonplaceholder.typicode.com/users";
+            url = new URL(urlAddress);
+            con = (HttpURLConnection) url.openConnection();
+            con.setRequestMethod("GET");
+            con.setRequestProperty("Content-Type", "application/json");
+            int status = con.getResponseCode();
+            log.debug("Http Response Code: {}", status);
+            if (getBaseResponseCode(status) == 2){
+                InputStream inputStream = con.getInputStream();
+                handleResponse(inputStream);
+            } else {
+                log.error("Http Error Code: {}", status);
+            }
+        } catch (java.io.IOException e) {
+            log.error(e.getMessage());
+            log.error(Arrays.toString(e.getStackTrace()));
+        }
+    }
+
+    private static void handleResponse(InputStream inputStream){
+        log.debug("handleResponse() called");
+        ObjectMapper mapper = new ObjectMapper();
+        try {
+            users = mapper.readValue(inputStream, User[].class);
+            log.debug("New contents of Users:");
+            log.debug(mapper.writerWithDefaultPrettyPrinter().writeValueAsString(users));
+            log.debug("Successful response handle");
+        } catch (IOException e) {
+            log.error(e.getMessage());
+            log.error(Arrays.toString(e.getStackTrace()));
+        }
+    }
+
+    private static int getBaseResponseCode(int x) {
+        while (x > 10) {
+            x = x / 10;
+        }
+        return x;
+    }
+
+    public static User[] getUsers(){
+        return users;
+    }
+
+    @Override
+    protected User[] doInBackground(Void ... voids) {
+        fetchUsers();
+        return users;
+    }
+
+    @Override
+    protected void onPostExecute(User[] result) {
+        delegate.processFinish(result);
+    }
+
+    public interface FetcherResponse {
+        void processFinish(User[] newUserList);
+    }
+}

ListViewExample/app/src/main/java/com/loot/markhardwick/listviewexample/backend/main/User.java

@@ -0,0 +1,49 @@
+package com.loot.markhardwick.listviewexample.backend.main;
+
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.Setter;
+import lombok.ToString;
+import lombok.extern.slf4j.Slf4j;
+
+/**
+ * POJO for jackson deserialization of users
+ */
+
+@Setter @Getter
+@AllArgsConstructor
+@NoArgsConstructor
+@Slf4j
+public class User {
+    int id;
+    String name, username, email, phone, website;
+    Address address;
+    Company company;
+
+    @ToString
+    @Setter @Getter
+    @AllArgsConstructor
+    @NoArgsConstructor
+    public class Address {
+        String street, suite, city, zipcode;
+        Geo geo;
+
+        @ToString
+        @Setter @Getter
+        @AllArgsConstructor
+        @NoArgsConstructor
+        public class Geo {
+            String lat, lng;
+        }
+    }
+
+    @ToString
+    @Setter @Getter
+    @AllArgsConstructor
+    @NoArgsConstructor
+    public class Company {
+        String name, catchPhrase, bs;
+    }
+}
+

ListViewExample/app/src/main/res/layout/main_activity.xml

@@ -1,7 +1,50 @@
 <?xml version="1.0" encoding="utf-8"?>
-<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<android.support.constraint.ConstraintLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
     android:id="@+id/container"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    tools:context=".MainActivity" />
+    tools:context=".MainActivity"
+    >
+
+    <Toolbar
+        android:id="@+id/toolbar"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:background="@color/colorPrimary"
+        >
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/header"
+            android:textSize="22sp"
+            android:textColor="@color/white"
+            android:textStyle="bold"
+            />
+
+    </Toolbar>
+
+    <ListView
+        android:id="@+id/listView"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="20dp"
+        app:layout_constraintTop_toBottomOf="@+id/toolbar"
+        />
+
+    <ProgressBar
+        android:id="@+id/progressBar"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        android:indeterminate="true"
+        android:indeterminateTint="@color/colorAccent2"
+        android:visibility="invisible"
+        />
+</android.support.constraint.ConstraintLayout>