AndroidManifest.xml

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.carbon.wallpapers"
    android:versionCode="1"
    android:versionName="1" >

    <uses-sdk
        android:minSdkVersion="14"
        android:targetSdkVersion="17" />

    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.SET_WALLPAPER" />
    <uses-permission android:name="android.permission.INTERNET" />

    <application
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name" >
        <activity
            android:name=".WallpaperActivity"
            android:label="@string/title_activity_wallpaper"
            android:screenOrientation="portrait" >
            <intent-filter>
                <action android:name="android.intent.action.SET_WALLPAPER" />

                <category android:name="android.intent.category.DEFAULT" />
            </intent-filter>
        </activity>
        <activity
            android:name=".Preview"
            android:configChanges="orientation|screenSize" />
        <activity android:name=".Vote" />
    </application>

</manifest>