AndroidManifest.xml

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
        package="com.android.certinstaller">
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

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

        <activity android:name=".CertInstaller"
                  android:configChanges="orientation|keyboardHidden">
            <intent-filter>
                <action android:name="android.credentials.INSTALL" />
                <category android:name="android.intent.category.DEFAULT" />
            </intent-filter>
        </activity>
    </application>
</manifest>