Fix crash on pre-21 devices.

Change-Id: Ic5ff46c99210362b28d1dd56dc0f275d94431e5c

Author: nic0lette

mediacontroller/build.gradle

@@ -27,6 +27,7 @@ android {
         versionCode 1
         versionName "1.0"
 
+        vectorDrawables.useSupportLibrary = true
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
 
     }

mediacontroller/src/main/res/layout/activity_launch.xml

@@ -15,12 +15,12 @@
   limitations under the License.
   -->
 <LinearLayout 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"
-    android:orientation="vertical"
-    tools:context="com.example.android.mediacontroller.LaunchActivity">
+              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"
+              android:orientation="vertical"
+              tools:context="com.example.android.mediacontroller.LaunchActivity">
 
     <android.support.design.widget.AppBarLayout
         android:layout_width="match_parent"
@@ -32,7 +32,7 @@
             android:layout_width="match_parent"
             android:layout_height="?attr/actionBarSize"
             android:background="?attr/colorPrimary"
-            app:popupTheme="@style/AppTheme.PopupOverlay" />
+            app:popupTheme="@style/AppTheme.PopupOverlay"/>
 
     android.support.design.widget.AppBarLayout>
 
@@ -41,30 +41,31 @@
         android:layout_width="match_parent"
         android:layout_height="match_parent"
         app:layoutManager=""
-        tools:visibility="gone" />
+        tools:visibility="gone"/>
 
-    <FrameLayout
+    <LinearLayout
         android:id="@+id/no_apps_found"
         android:layout_width="match_parent"
-        android:layout_height="match_parent">
+        android:layout_height="match_parent"
+        android:gravity="center_vertical"
+        android:orientation="vertical">
 
-        <LinearLayout
-            android:orientation="vertical"
-            android:layout_gravity="center"
+        <ImageView
             android:layout_width="match_parent"
-            android:layout_height="wrap_content">
+            android:layout_height="wrap_content"
+            android:layout_gravity="center_horizontal"
+            app:srcCompat="@drawable/ic_no_apps_black_24dp"
+            tools:ignore="contentDescription"/>
 
-            <TextView
-                android:layout_width="match_parent"
-                android:layout_height="wrap_content"
-                android:drawableTop="@drawable/ic_no_apps_black_24dp"
-                android:gravity="center"
-                android:textSize="@dimen/error_text_size"
-                android:text="@string/no_apps_found" />
+        <TextView
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:gravity="center"
+            android:text="@string/no_apps_found"
+            android:textSize="@dimen/error_text_size"/>
 
-            <TextView
-                android:layout_width="match_parent"
-                android:layout_height="wrap_content" />
-        LinearLayout>
-    FrameLayout>
+        <TextView
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"/>
+    LinearLayout>
 LinearLayout>