How to solve the problem of view Oh, width and height

android View the getWidth (), getHeight always 0 oh ask how to solve?

View cv = context.getWindow () getDecorView ();.
bmp = Bitmap.createBitmap (cv.getWidth (), cv.getHeight (), Bitmap.Config.ARGB_8888);

Found cv.getWidth (), cv.getHeight () values ​​are 0, causes an exception, ask how to solve Oh<-! Main posts under Banner (D4) -><-! Posts under the main text (D5) ->
Reply:
With getMeasuredHeight () and getMeasuredWidth ()

 View cv = context.getWindow () getDecorView ();. 
bmp = Bitmap.createBitmap (cv.getMeasuredWidth (), cv.getMeasuredHeight (), Bitmap.Config.ARGB_8888); 

Reply:

cited a floor ncepu307 reply:

with getMeasuredHeight () and getMeasuredWidth ()

 View cv = context.getWindow () getDecorView ();. 
bmp = Bitmap.createBitmap (cv.getMeasuredWidth (), cv.getMeasuredHeight (), Bitmap.Config.ARGB_8888); 

Reply:

 
/ / ------------------------------------------------ Method one 
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 (); 
textView.append ("\ n" + height + "," + width); 




/ / ----------------------------------------------- Methods two 
ViewTreeObserver vto = imageView.getViewTreeObserver (); 
vto.addOnPreDrawListener (new ViewTreeObserver.OnPreDrawListener () {
public boolean onPreDraw () {
int height = imageView.getMeasuredHeight (); 
int width = imageView.getMeasuredWidth (); 
textView.append ("\ n" + height + "," + width); 
return true; 
} 
}); 
/ / ----------------------------------------------- Methods three 
ViewTreeObserver vto2 = imageView.getViewTreeObserver (); 
vto2.addOnGlobalLayoutListener (new OnGlobalLayoutListener () {
@ Override 
public void onGlobalLayout () {
imageView.getViewTreeObserver () removeGlobalOnLayoutListener (this);. 
textView.append ("\ n \ n" + imageView.getHeight () + "," + imageView.getWidth ()); 
} 
}); 

Reply:
Not only shows your view
Reply:
Are you going to get a wide-screen high?