diff --git a/app/src/main/res/drawable-v21/touch_selector_activated.xml b/app/src/main/res/drawable-v21/touch_selector_activated.xml
index 3420b81..0441660 100644
--- a/app/src/main/res/drawable-v21/touch_selector_activated.xml
+++ b/app/src/main/res/drawable-v21/touch_selector_activated.xml
@@ -1,5 +1,18 @@
 <?xml version="1.0" encoding="utf-8"?>
+<!--
+     Copyright (C) 2015 The Android Open Source Project
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
 
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+ -->
 <!-- The base state contains a selector for all states except for the activated state, and
      leverages ripple -->
 <ripple xmlns:android="http://schemas.android.com/apk/res/android"
diff --git a/app/src/main/res/drawable-v21/touch_selector_base.xml b/app/src/main/res/drawable-v21/touch_selector_base.xml
index 4fb4ad2..1de190b 100644
--- a/app/src/main/res/drawable-v21/touch_selector_base.xml
+++ b/app/src/main/res/drawable-v21/touch_selector_base.xml
@@ -1,5 +1,18 @@
 <?xml version="1.0" encoding="utf-8"?>
+<!--
+     Copyright (C) 2015 The Android Open Source Project
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
 
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+ -->
 <!-- The base state contains a selector for all states except for the activated state, and
      leverages ripple -->
 <ripple xmlns:android="http://schemas.android.com/apk/res/android"
diff --git a/app/src/main/res/drawable-v21/touch_selector_white.xml b/app/src/main/res/drawable-v21/touch_selector_white.xml
index 8b939d6..5f566bb 100644
--- a/app/src/main/res/drawable-v21/touch_selector_white.xml
+++ b/app/src/main/res/drawable-v21/touch_selector_white.xml
@@ -1,4 +1,18 @@
 <?xml version="1.0" encoding="utf-8"?>
+<!--
+     Copyright (C) 2015 The Android Open Source Project
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+ -->
 <ripple xmlns:android="http://schemas.android.com/apk/res/android"
     android:color="?attr/colorControlHighlight">
     <item android:id="@android:id/mask" android:drawable="@color/white"/>
diff --git a/app/src/main/res/drawable/touch_selector_activated.xml b/app/src/main/res/drawable/touch_selector_activated.xml
index 08ff68b..02817e4 100644
--- a/app/src/main/res/drawable/touch_selector_activated.xml
+++ b/app/src/main/res/drawable/touch_selector_activated.xml
@@ -1,5 +1,18 @@
 <?xml version="1.0" encoding="utf-8"?>
+<!--
+     Copyright (C) 2015 The Android Open Source Project
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
 
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+ -->
 <!-- This selector works everywhere, but does not support ripple -->
 <selector xmlns:android="http://schemas.android.com/apk/res/android">
     <item android:state_activated="true" android:state_focused="false"
diff --git a/app/src/main/res/drawable/touch_selector_white.xml b/app/src/main/res/drawable/touch_selector_white.xml
index 59f7b52..77d1ecd 100644
--- a/app/src/main/res/drawable/touch_selector_white.xml
+++ b/app/src/main/res/drawable/touch_selector_white.xml
@@ -1,5 +1,18 @@
 <?xml version="1.0" encoding="utf-8"?>
+<!--
+     Copyright (C) 2015 The Android Open Source Project
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
 
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+ -->
 <!-- This selector works everywhere, but does not support ripple -->
 <selector xmlns:android="http://schemas.android.com/apk/res/android">
     <item android:state_activated="true" android:state_focused="false"