get layout height and width at run time android

The width and height values are set after the layout has been created, when elements have been placed they then get measured. On the first call to onSizeChanged the parms will be 0 so if you use that check for it.

Little more detail here https://groups.google.com/forum/?fromgroups=#!topic/android-developers/nNEp6xBnPiw

and here http://developer.android.com/reference/android/view/View.html#Layout

Here is how to use onLayout:

@Override
protected void onLayout(boolean changed, int l, int t, int r, int b) {
    int width = someView.getWidth();
    int height = someView.getHeight();
}

Suppose I have to get a LinearLayout width defined in XML. I have to get reference of it by XML. Define LinearLayout l as instance.

 l = (LinearLayout)findviewbyid(R.id.l1);
ViewTreeObserver observer = l.getViewTreeObserver();
        observer.addOnGlobalLayoutListener(new OnGlobalLayoutListener() {

            @Override
            public void onGlobalLayout() {
                // TODO Auto-generated method stub
                init();
            l.getViewTreeObserver().removeGlobalOnLayoutListener(
                    this);
        }
    });

protected void init() {
        int a= l.getHeight();
            int b = l.getWidth();
Toast.makeText(getActivity,""+a+" "+b,3000).show();
    } 
    callfragment();
}  

To get it work, you need to check whether the desired height value is bigger than 0 - and first then remove the onGlobalLayout listener and do whatever you want with the height. The listener calls its method continuously and by the first call it is not guaranteed that the view is measured properly.

    final LinearLayout parent = (LinearLayout) findViewById(R.id.parentView);
    parent.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
        @Override
        public void onGlobalLayout() {
            int availableHeight = parent.getMeasuredHeight();
            if(availableHeight>0) {
                parent.getViewTreeObserver().removeGlobalOnLayoutListener(this);
                //save height here and do whatever you want with it
            }
        }
    });