AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.fairphone.programmablebutton"
    android:versionCode="10001"
    android:versionName="1.0.1" >

    <uses-sdk
        android:minSdkVersion="21"
        android:targetSdkVersion="23" />

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

    <uses-feature android:name="android.hardware.camera" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name=".ProgrammableButton"
            android:label="@string/title_activity_main" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
            </intent-filter>
        </activity>

        <receiver
            android:name=".CameraButtonReceiver"
            android:enabled="true"
            android:exported="true">
            <intent-filter
                android:priority="999">
                <action android:name="android.intent.action.CAMERA_BUTTON"></action>
                <category android:name="android.intent.category.DEFAULT"></category>
            </intent-filter>
        </receiver>
    </application>

</manifest>