AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
        package="org.cyanogenmod.wallpaperpicker"
        android:versionCode="1"
        android:versionName="1.0"
        >

    <uses-sdk android:minSdkVersion="23" android:targetSdkVersion="23" />

    <!-- Permissions for setting the wallpaper -->
    <uses-permission android:name="android.permission.SET_WALLPAPER" />
    <uses-permission android:name="android.permission.SET_WALLPAPER_HINTS" />
    <!-- Permissions for setting lock screen wallpaper -->
    <uses-permission android:name="android.permission.SET_KEYGUARD_WALLPAPER" />
    <!-- Permissions for setting images from external storage as wallpaper -->
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
    <!-- Permissions for reading themes -->
    <uses-permission android:name="cyanogenmod.permission.READ_THEMES" />

    <application
        android:label="@string/app_name"
        android:restoreAnyVersion="true"
        android:supportsRtl="true"
        android:icon="@mipmap/ic_launcher_wallpaper">

        <activity
                android:name="org.cyanogenmod.wallpaperpicker.WallpaperPickerActivity"
                android:theme="@style/Theme.WallpaperPicker"
                android:label="@string/pick_wallpaper"
                android:icon="@mipmap/ic_launcher_wallpaper"
                android:finishOnCloseSystemDialogs="true">
            <intent-filter>
                <action android:name="android.intent.action.SET_WALLPAPER" />
                <category android:name="android.intent.category.DEFAULT" />
            </intent-filter>
            <intent-filter>
                <action android:name="android.intent.action.SET_KEYGUARD_WALLPAPER" />
                <category android:name="android.intent.category.DEFAULT" />
            </intent-filter>
        </activity>

        <activity
                android:name="org.cyanogenmod.wallpaperpicker.WallpaperCropActivity"
                android:theme="@style/Theme.WallpaperCropper"
                android:label="@string/crop_wallpaper"
                android:icon="@mipmap/ic_launcher_wallpaper"
                android:finishOnCloseSystemDialogs="true">
            <intent-filter>
                <action android:name="android.service.wallpaper.CROP_AND_SET_WALLPAPER" />
                <category android:name="android.intent.category.DEFAULT" />
                <data android:mimeType="image/*" />
            </intent-filter>
        </activity>

    </application>
</manifest>