android-gesture – Tarik Billa

OnBackInvokedCallback is not enabled for the application in Set ‘android:enableOnBackInvokedCallback=”true”‘ in the application manifest as warning

December 6, 2023 by Tarik

This is because of the Android Gesture Navigation, reference link here To help make predictive back gesture helpful and consistent for users, we’re moving to an ahead-of-time model for back event handling by adding new APIs and deprecating existing APIs. The new platform APIs and updates to AndroidX Activity 1.6+ are designed to make your … Read more

Can we use scale gesture detector for pinch zoom in Android?

September 18, 2023 by Tarik

You can create a reusable class that implements OnTouchListener to accomplish this. public class MyScaleGestures implements OnTouchListener, OnScaleGestureListener { private View view; private ScaleGestureDetector gestureScale; private float scaleFactor = 1; private boolean inScale = false; public MyScaleGestures (Context c){ gestureScale = new ScaleGestureDetector(c, this); } @Override public boolean onTouch(View view, MotionEvent event) { this.view = … Read more

android – How can I make a button flash?

June 10, 2023 by Tarik

There are several, depending on what kind of flashing you mean. You can, for example, use alpha animation and start it as your button first appears. And when the user clicks button, in your OnClickListener just do clearAnimation(). Example: public void onCreate(Bundle savedInstanceState) { final Animation animation = new AlphaAnimation(1, 0); // Change alpha from … Read more