Activity中获取view的宽高

方式一：
view.post(new Runnable(){   @Override   public void run()   {      Log.d("ssss","Width = "+view.getWidth());      Log.d("ssss","Height = "+view.getHeight());   }});
输出：
 Width = 308  Height = 168
view 在执行完onMeasure()后会调用 post（）
方式二：
Observer方法
view.getViewTreeObserver().addOnGlobalLayoutListener(new OnGlobalLayoutListener() { 
  @Override   public void onGlobalLayout() {      // 宽高已经测量完毕      
      Log.d("ssss","Width = "+view.getWidth());      Log.d("ssss","Height = "+view.getHeight());
      view.getViewTreeObserver().removeGlobalOnLayoutListener(this);  
   }
  }
);
方式三
@Overridepublic void onWindowFocusChanged(boolean hasFocus){   super.onWindowFocusChanged(hasFocus);   view.getHeight();   Log.d("ssss","hight = "+view.getHeight());
   Log.d("ssss","Width = "+view.getWidth());
}
方式四：
view.setOnClickListener(newOnClickListener(){   @Override public void onClick (View v){   
Log.d("ssss","hight = "+view.getHeight());
   Log.d("ssss","Width = "+view.getWidth());
    }
  }
);