What's the correct way to implement Tap To Focus for camera?

Question

I\'m working on an app which has a custom camera screen, for which I\'m supposed to implement tap to focus, like in the Android(more specifically, the Galaxy S4) camera app.

Answer 1

 binding.cPreview.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            mCamera.autoFocus(myAutoFocusCallback);
        }
    });


 Camera.AutoFocusCallback myAutoFocusCallback = new Camera.AutoFocusCallback(){

        @Override
        public void onAutoFocus(boolean arg0, Camera arg1) {
            // TODO Auto-generated method stub
        }};