Creating the Feed Activity

Author: dragosholban

.idea/caches/build_file_checksums.ser

@@ -29,4 +29,4 @@ dependencies {
     implementation 'com.firebaseui:firebase-ui-auth:3.3.1'
 }
 
-apply plugin: 'com.google.gms.google-services'
+apply plugin: 'com.google.gms.google-services'

app/build.gradle

@@ -9,14 +9,16 @@
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
         android:theme="@style/AppTheme">
-        <activity android:name=".MainActivity"
+        <activity
+            android:name=".MainActivity"
             android:screenOrientation="portrait">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
 
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
+        <activity android:name=".FeedActivity"></activity>
     </application>
 
 </manifest>

app/src/main/AndroidManifest.xml

@@ -0,0 +1,18 @@
+package com.dragosholban.myinstagramapp;
+
+import android.support.v7.app.AppCompatActivity;
+import android.os.Bundle;
+import android.view.View;
+
+public class FeedActivity extends AppCompatActivity {
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_feed);
+    }
+
+    public void uploadImage(View view) {
+
+    }
+}

app/src/main/java/com/dragosholban/myinstagramapp/FeedActivity.java

@@ -19,6 +19,14 @@ public class MainActivity extends AppCompatActivity {
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
+
+        FirebaseUser fbUser = FirebaseAuth.getInstance().getCurrentUser();
+        if(fbUser != null) {
+            // User already signed in
+            // go to feed activity
+            Intent intent = new Intent(this, FeedActivity.class);
+            startActivity(intent);
+        }
     }
 
     public void signIn(View view) {
@@ -37,8 +45,9 @@ protected void onActivityResult(int requestCode, int resultCode, Intent data) {
 
             if (resultCode == RESULT_OK) {
                 // Successfully signed in
-                FirebaseUser fbUser = FirebaseAuth.getInstance().getCurrentUser();
-                Toast.makeText(this, "Authenticated as " + fbUser.getDisplayName(), Toast.LENGTH_SHORT).show();
+                // go to feed activity
+                Intent intent = new Intent(this, FeedActivity.class);
+                startActivity(intent);
             } else {
                 // Sign in failed, check response for error code
                 if (response != null) {

app/src/main/java/com/dragosholban/myinstagramapp/MainActivity.java

@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="utf-8"?>
+<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".FeedActivity">
+
+    <Button
+        android:id="@+id/uploadButton"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginBottom="8dp"
+        android:layout_marginEnd="8dp"
+        android:layout_marginLeft="8dp"
+        android:layout_marginRight="8dp"
+        android:layout_marginStart="8dp"
+        android:onClick="uploadImage"
+        android:text="+"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent" />
+
+</android.support.constraint.ConstraintLayout>