android获取控件宽高

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  //方法一        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);                                //方法二        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;            }        });        //方法三           ViewTreeObserver vto2 = imageView.getViewTreeObserver();          vto2.addOnGlobalLayoutListener(new OnGlobalLayoutListener() {            @Override              public void onGlobalLayout() {            imageView.getViewTreeObserver().removeGlobalOnLayoutListener(this);                  textView.append("\n\n"+imageView.getHeight()+","+imageView.getWidth());            }          });

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