Return to activity after Action Input Method Settings

Question

I am making a custom keyboard app.
There is a button that leads the user from the app to Input Method Settings.
Here is the intent:

startActivityForResult(new Intent(Settings.ACTION_INPUT_METHOD_SETTINGS), 2000);

Now, is there a way to return user to the activity after he enables the keyboard?
EDIT
Is there a way to set a BroadcastReceiver and register when the user clicks "ok" button on warning window? And then app can call super.onResume() to resume the activity.

Answer 1

So I simply spawn an IntentService that listens for changes at the same time I launch the Settings menu. I believe this is also how SwiftKey has done theirs.

public class MyService extends IntentService {

    /**
     * Creates an IntentService
     */
    public MyService() {
        super("MyService");
    }

    @Override
    protected void onHandleIntent(Intent intent) {
        String packageLocal = getPackageName();
        boolean isInputDeviceEnabled = false;
        while(!isInputDeviceEnabled) {
            InputMethodManager inputMethodManager = (InputMethodManager) getSystemService(INPUT_METHOD_SERVICE);
            List<InputMethodInfo> list = inputMethodManager.getEnabledInputMethodList();

            // check if our keyboard is enabled as input method
            for(InputMethodInfo inputMethod : list) {
                String packageName = inputMethod.getPackageName();
                if(packageName.equals(packageLocal)) {
                    isInputDeviceEnabled = true;
                }
            }
        }

        // open activity
        Intent newIntent = new Intent(this, MainActivity.class);
        newIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        startActivity(newIntent);
    }
}