#2018 - Toolbar on Second Activity with back button support

android/java/MapboxGLAndroidSDKTestApp/src/main/AndroidManifest.xml

@@ -17,7 +17,7 @@
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
-        <activity android:name=".SecondMapActivity"/>
+        <activity android:name=".SecondMapActivity" android:label="@string/activity_second"/>
         <meta-data
             android:name="io.fabric.ApiKey"
             android:value="9724157045ff7d083492c6d9ae03e60e8609d461" />

android/java/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxgl/testapp/SecondMapActivity.java

@@ -1,8 +1,12 @@
 package com.mapbox.mapboxgl.testapp;
 
 import android.os.Bundle;
+import android.support.v4.view.GravityCompat;
 import android.support.v7.app.AppCompatActivity;
+import android.support.v7.widget.Toolbar;
 import android.util.Log;
+import android.view.MenuItem;
+import android.view.View;
 import com.mapbox.mapboxgl.views.MapView;
 import java.io.BufferedReader;
 import java.io.IOException;
@@ -20,6 +24,11 @@ public class SecondMapActivity extends AppCompatActivity {
 
         setContentView(R.layout.activity_second);
 
+        Toolbar toolbar = (Toolbar) findViewById(R.id.secondToolBar);
+        setSupportActionBar(toolbar);
+        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
+        getSupportActionBar().setDisplayShowHomeEnabled(true);
+
         mMapView = (MapView) findViewById(R.id.secondMapView);
         // Load the access token
         try {
@@ -80,4 +89,15 @@ public class SecondMapActivity extends AppCompatActivity {
 
         mMapView.onLowMemory();
     }
+
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+        switch (item.getItemId()) {
+            case android.R.id.home:
+                onBackPressed();
+                return true;
+            default:
+                return super.onOptionsItemSelected(item);
+        }
+    }
 }

android/java/MapboxGLAndroidSDKTestApp/src/main/res/layout/activity_second.xml

@@ -4,6 +4,14 @@
               android:layout_width="match_parent"
               android:layout_height="match_parent">
 
+    <android.support.v7.widget.Toolbar
+        android:id="@+id/secondToolBar"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:background="@color/primary"
+        android:minHeight="?attr/actionBarSize"
+        android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"/>
+
     <com.mapbox.mapboxgl.views.MapView
         android:id="@+id/secondMapView"
         android:layout_width="match_parent"

android/java/MapboxGLAndroidSDKTestApp/src/main/res/values/strings.xml

@@ -3,6 +3,8 @@
 
     <string name="app_name">Mapbox GL</string>
 
+    <string name="activity_second">Second Activity</string>
+
     <string name="action_gps">Toggle GPS location</string>
     <string name="action_location_none">Disable tracking</string>
     <string name="action_location_follow">Use follow tracking mode</string>