AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="org.opencv.samples.NativeActivity"
      android:versionCode="1"
      android:versionName="1.0">
    <uses-sdk android:minSdkVersion="9" />
    <application android:label="@string/app_name"
                 android:icon="@drawable/icon"
                 android:debuggable="true">

        <activity android:name="CvNativeActivity"
                  android:label="@string/app_name"
                  android:configChanges="orientation|keyboardHidden">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                    <category android:name="android.intent.category.LAUNCHER" />
                </intent-filter>
            </activity>
        <activity android:name="android.app.NativeActivity"
                  android:label="@string/app_name">
            <meta-data android:name="android.app.lib_name"
                    android:value="native_activity" />
        </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>