Android - Is there any event triggered when activity.setContentView has finished rendering?

Question

I'm trying to get values from myImageView.getImageMatrix() method once my activity is ready. I tried using the onCreate() , onStart() , onResume() methods but the matrix I get is the default.

If I call myImageView.getImageMatrix() triggered by an OnClickListener, after my activity is visible, I get the right values.

---

Just to be more clear:

• calling getImageMatrix onStart = Matrix{[1.0, 0.0, 0.0][0.0, 1.0, 0.0][0.0, 0.0, 1.0]}

• calling getImageMatrix onClick = Matrix{[0.77488154, 0.0, 7.6717987][0.0, 0.77488154, 0.0][0.0, 0.0, 1.0]}

Answer 1

You can also try this method:

ImageView myImageView = (ImageView) findViewById(R.id.myImageView);
ViewTreeObserver vto = myImageView.getViewTreeObserver();      
vto.addOnGlobalLayoutListener(new OnGlobalLayoutListener() {          
     @Override          
     public void onGlobalLayout() {              
        // do something now when the object is loaded 
        // e.g. find the real size of it etc          
        myImageView.getViewTreeObserver().removeGlobalOnLayoutListener(this);        
     }      
});