How to start an application at bootup in ANDROID?

This snippet starts an Application automatically after the android-os booted up.

String url = "url";
Intent intent1 = new Intent(Intent.ACTION_VIEW);
intent1.setData(Uri.parse(url));
startActivity(intent1);

in AndroidManifest.xml (application-part):

<receiver android:enabled="true" android:name=".BootUpReceiver"
android:permission="android.permission.RECEIVE_BOOT_COMPLETED">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</receiver>
[..]
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
[..]

public class BootUpReceiver extends BroadcastReceiver{
      @Override
      public void onReceive(Context context, Intent intent) {
         Intent i = new Intent(context, MyActivity.class);
         i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
         context.startActivity(i);
      }
}