Enable google and facebook login, Update LoginActivity layout

app/src/main/res/layout/activity_login.xml

@@ -7,6 +7,8 @@
     android:paddingTop="@dimen/activity_vertical_margin"
     android:paddingBottom="@dimen/activity_vertical_margin"
     android:orientation="vertical"
+    android:gravity="bottom"
+    android:background="@color/red"
     tools:context="com.mac.themac.activity.LoginActivity">
 
     <TextView
@@ -22,32 +24,33 @@
         android:id="@+id/login_with_facebook"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:layout_gravity="center_horizontal"
         android:text="@string/login_with_facebook"
         />
 
     <com.google.android.gms.common.SignInButton
         android:id="@+id/login_with_google"
         android:text="@string/login_with_google"
         android:layout_width="match_parent"
-        android:layout_height="wrap_content" />
+        android:layout_height="wrap_content"/>
 
     <Button
         android:id="@+id/login_with_twitter"
         android:text="@string/login_with_twitter"
         android:layout_width="match_parent"
-        android:layout_height="wrap_content" />
+        android:layout_height="wrap_content"/>
 
     <Button
         android:id="@+id/login_with_password"
         android:text="@string/login_with_password"
         android:layout_width="match_parent"
-        android:layout_height="wrap_content" />
+        android:layout_height="wrap_content"
+        android:visibility="gone"/>
 
     <Button
         android:id="@+id/login_anonymously"
         android:text="@string/login_anonymously"
         android:layout_width="match_parent"
-        android:layout_height="wrap_content" />
+        android:layout_height="wrap_content"
+        android:visibility="gone"/>
 
 </LinearLayout>

app/src/main/res/values/colors.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="red">#ffff0000</color>
+</resources>

app/src/main/res/values/keys.xml

@@ -4,7 +4,7 @@
 
     <!-- Your Facebook App ID from your app settings on https://developers.facebook.com/ -->
     <!-- More details here: https://www.firebase.com/docs/android/guide/login/facebook.html -->
-    <string name="facebook_app_id">your-facebook-app-id</string>
+    <string name="facebook_app_id">1604656406485757</string>
 
     <!-- Your Twitter consumer key and secret from your app settings on https://apps.twitter.com/ -->
     <!-- More details here: https://www.firebase.com/docs/android/guide/login/twitter.html -->

app/src/main/res/values/styles.xml

@@ -1,7 +1,7 @@
 <resources>
 
     <!-- Base application theme. -->
-    <style name="AppTheme" parent="android:Theme.Holo.Light.DarkActionBar">
+    <style name="AppTheme" parent="android:Theme.NoTitleBar">
         <!-- Customize your theme here. -->
     </style>