AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.android.purebackground"
    android:sharedUserId="android.uid.system"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="14"
        android:targetSdkVersion="21" />

    <uses-permission android:name="android.permission.WRITE_SETTINGS" />
    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>
    <application
        android:allowBackup="true"
        android:icon="@drawable/prize_app_def"
        android:label="@string/app_name"
        android:theme="@style/Theme.Prize.PureBackground" >
        <activity
            android:name=".PureBackgroundSettingsActivity"
            android:excludeFromRecents="true"
            android:label="@string/app_name"
            android:screenOrientation="nosensor" 
			android:launchMode="singleTask">
            <intent-filter>
                <action android:name="com.android.purebackground_BOOT" />
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.DEFAULT" />
            </intent-filter>
        </activity>
        <activity
            android:name="com.android.purebackground.AddPureBackgroundApp"
            android:excludeFromRecents="true"
            android:screenOrientation="nosensor" />

        <receiver
            android:name=".receiver.PkgAddReceiver">
            <intent-filter>
                <action android:name="android.intent.action.PACKAGE_ADDED" />
                <data android:scheme="package" />
            </intent-filter>
        </receiver>

        <receiver
            android:name=".receiver.BootCompletedReceiver">
            <intent-filter>
                <action android:name="android.intent.action.BOOT_COMPLETED" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </receiver>
    </application>
</manifest>