diff --git a/.gitignore b/.gitignore
index 6a548f3..a24d51b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -29,3 +29,7 @@ proguard/
 *.ipr
 *.iws
 .idea/
+
+# Gradle files
+build/
+.gradle/
diff --git a/build.gradle b/build.gradle
new file mode 100644
index 0000000..3663dbe
--- /dev/null
+++ b/build.gradle
@@ -0,0 +1,46 @@
+buildscript {
+    repositories {
+        mavenCentral()
+    }
+
+    dependencies {
+        classpath 'com.android.tools.build:gradle:0.7.0'
+    }
+}
+
+apply plugin: 'android'
+
+dependencies {
+	compile fileTree('libs/')
+    compile 'com.android.support:appcompat-v7:18.0.+'
+    compile 'com.android.support:mediarouter-v7:18.0.+'
+}
+
+android {
+    compileSdkVersion 19
+    buildToolsVersion "19.0.1"
+
+    sourceSets {
+        main {
+            manifest.srcFile 'AndroidManifest.xml'
+            java.srcDirs = ['src']
+            resources.srcDirs = ['src']
+            aidl.srcDirs = ['src']
+            renderscript.srcDirs = ['src']
+            res.srcDirs = ['res']
+            assets.srcDirs = ['assets']
+        }
+
+        // Move the tests to tests/java, tests/res, etc...
+        instrumentTest.setRoot('tests')
+
+        // Move the build types to build-types/<type>
+        // For instance, build-types/debug/java, build-types/debug/AndroidManifest.xml, ...
+        // This moves them out of them default location under src/<type>/... which would
+        // conflict with src/ being used by the main source set.
+        // Adding new build types or product flavors should be accompanied
+        // by a similar customization.
+        debug.setRoot('build-types/debug')
+        release.setRoot('build-types/release')
+    }
+}
diff --git a/lint.xml b/lint.xml
new file mode 100644
index 0000000..d463a26
--- /dev/null
+++ b/lint.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<lint>
+	<issue id="InvalidPackage">
+		<ignore path="libs/" />
+	</issue>
+</lint>
\ No newline at end of file
diff --git a/src/com/github/nutomic/controldlna/gui/RouteFragment.java b/src/com/github/nutomic/controldlna/gui/RouteFragment.java
index e6c9295..6cf9423 100644
--- a/src/com/github/nutomic/controldlna/gui/RouteFragment.java
+++ b/src/com/github/nutomic/controldlna/gui/RouteFragment.java
@@ -119,7 +119,7 @@ public class RouteFragment extends MediaRouteDiscoveryFragment implements
 		public void onServiceConnected(ComponentName className, IBinder service) {
 			mMediaRouterPlayService = (MediaRouterPlayServiceBinder) service;
 			mMediaRouterPlayService.getService().setRouterFragment(RouteFragment.this);
-			mPlaylistAdapter.addAll(mMediaRouterPlayService.getService().getPlaylist());
+			mPlaylistAdapter.add(mMediaRouterPlayService.getService().getPlaylist());
 			receiveIsPlaying(mMediaRouterPlayService.getService().getCurrentTrack());
 			applyColors();
         }
@@ -154,7 +154,7 @@ public class RouteFragment extends MediaRouteDiscoveryFragment implements
     	super.onActivityCreated(savedInstanceState);
     	
     	mRouteAdapter = new RouteAdapter(getActivity());
-    	mRouteAdapter.addAll(MediaRouter.getInstance(getActivity()).getRoutes());
+    	mRouteAdapter.add(MediaRouter.getInstance(getActivity()).getRoutes());
     	mRouteAdapter.remove(MediaRouter.getInstance(getActivity()).getDefaultRoute());
     	mPlaylistAdapter = new FileArrayAdapter(getActivity());
     	
@@ -483,7 +483,7 @@ public class RouteFragment extends MediaRouteDiscoveryFragment implements
 	 */
 	public void play(List<Item> playlist, int start) {
 		mPlaylistAdapter.clear();
-		mPlaylistAdapter.addAll(playlist);
+		mPlaylistAdapter.add(playlist);
 		mMediaRouterPlayService.getService().setPlaylist(playlist);
 		
 		if (mSelectedRoute != null)
diff --git a/src/com/github/nutomic/controldlna/utility/RouteAdapter.java b/src/com/github/nutomic/controldlna/utility/RouteAdapter.java
index 6e6b4ee..e9455a0 100644
--- a/src/com/github/nutomic/controldlna/utility/RouteAdapter.java
+++ b/src/com/github/nutomic/controldlna/utility/RouteAdapter.java
@@ -1,5 +1,7 @@
 package com.github.nutomic.controldlna.utility;
 
+import java.util.List;
+
 import android.content.Context;
 import android.support.v7.media.MediaRouter.RouteInfo;
 import android.view.LayoutInflater;
@@ -33,4 +35,12 @@ public class RouteAdapter extends ArrayAdapter<RouteInfo> {
         return convertView;
 	}
 
+	/**
+	 * Replacement for addAll, which is not implemented on lower API levels.
+	 */
+	public void add(List<RouteInfo> routes) {
+		for (RouteInfo r : routes)
+			add(r);
+	}
+
 }