@ActivityScreen
public class SampleActivity extends Activity {

    @ActivityArg
    long id;
    @ActivityArg
    String title;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        // read fields annotated with @ActivityArg
        SampleActivityScreen.inject(this);
    }
}

public final class SampleActivityScreen {
    public final long id;

    public final String title;

    public SampleActivityScreen(long id, String title) {
        this.id = id;
        this.title = title;
    }

    public void open(Activity activity) {
        Intent intent = toIntent(activity);
        activity.startActivity(intent);
    }

    public void openForResult(Activity activity, int requestCode) {
        Intent intent = toIntent(activity);
        activity.startActivityForResult(intent, requestCode);
    }

    public Intent toIntent(Activity activity) {
        Intent intent = new Intent(activity, SampleActivity.class);
        Bundle bundle = new Bundle();
        bundle.putLong("id", id);
        bundle.putString("title", title);
        intent.putExtras(bundle);
        return intent;
    }

    public static void inject(SampleActivity activity) {
        Bundle bundle = activity.getIntent().getExtras();
        if (bundle == null) {
            throw new NullPointerException("SampleActivity has empty Bundle. Use open() or openForResult() to launch activity.");
        }
        checkArguments(bundle);
        activity.id = bundle.getLong("id");
        activity.title = bundle.getString("title");
    }

    private static void checkArguments(Bundle bundle) {
        if (!bundle.containsKey("id")) {
            throw new IllegalStateException("Required argument id with key 'id' is not set");
        }
        if (!bundle.containsKey("title")) {
            throw new IllegalStateException("Required argument title with key 'title' is not set");
        }
    }
}

    new SampleActivityScreen(3, "Sample title").open(activity);