OpenCV/opencv/samples/android/15-puzzle/gradle/AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="org.opencv.samples.puzzle15"
>

    <application
        android:icon="@drawable/icon"
        android:label="@string/app_name">

        <activity
            android:name=".Puzzle15Activity"
            android:label="@string/app_name"
            android:screenOrientation="landscape"
            android:configChanges="keyboardHidden|orientation" >

            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

    <uses-permission android:name="android.permission.CAMERA"/>

    <uses-feature android:name="android.hardware.camera" android:required="false"/>
    <uses-feature android:name="android.hardware.camera.autofocus" android:required="false"/>
    <uses-feature android:name="android.hardware.camera.front" android:required="false"/>
    <uses-feature android:name="android.hardware.camera.front.autofocus" android:required="false"/>

</manifest>