getUnMeasureSize.java

public class measureSize{
   public void getSize1(){
    int w = View.MeasureSpec.makeMeasureSpec(0,
                View.MeasureSpec.UNSPECIFIED);
        int h = View.MeasureSpec.makeMeasureSpec(0,
                View.MeasureSpec.UNSPECIFIED);
        imageView.measure(w, h);
        int height = imageView.getMeasuredHeight();
        int width = imageView.getMeasuredWidth();
   }
   
   public void getSize2(){
    ViewTreeObserver vto = imageView.getViewTreeObserver(); 
        vto.addOnPreDrawListener(new ViewTreeObserver.OnPreDrawListener() { 
            public boolean onPreDraw() { 
                vto.removeOnPreDrawListener(this);
                int height = imageView.getMeasuredHeight(); 
                int width = imageView.getMeasuredWidth(); 
                return true; 
            } 
        });
   }
   
   public void getSize3(){
    ViewTreeObserver vto = imageView.getViewTreeObserver();   
        vto.addOnGlobalLayoutListener(new OnGlobalLayoutListener() { 
            @Override  
            public void onGlobalLayout() { 
                imageView.getViewTreeObserver().removeGlobalOnLayoutListener(this); 
                imageView.getHeight();
                imageView.getWidth();
            }   
        });
   }
}