Activity中获取 组件大小

       代码：

@Override
	public void onWindowFocusChanged(boolean hasFocus) {
		// TODO Auto-generated method stub
		super.onWindowFocusChanged(hasFocus);
		Log.d("TAG", "A-button1-->"+button1);
		  Log.d("TAG", "A-width-->"+button1.getWidth());
	}

    方法：在Activity中重写 onWindowFocusChanged（）方法，然后直接在方法里面获取view的大小

    解释：重写view中的onMeasure()方法可以知道，这个方法是用来计算view的宽度和高度，所以只要重写onMeasure()以 后的方法，然后再那个方法里面获取view的大小就行了。通过测试，一个Activity中，各种方法调用顺序如下：

其调用顺序为Activity.oncreate()→Activity.onResume()→
→TestImageView.onMeasure()→TestImageView.onLayout()→onGlobalLayoutListener()→
→Activity.onWidnowFocusChanged()→.....→
→TextImageView.onDraw()

引用自：http://www.xuebuyuan.com/1587193.html

fragment 中获取组件大小

         代码：

	Button button1;
	
	private  int width ; 
	
	private Handler mHandler;
	@Override
	public View onCreateView(LayoutInflater inflater, ViewGroup container,
			Bundle savedInstanceState) {
		mView = inflater.inflate(R.layout.activity_one, null);
		
		mHandler = new Handler(){
			@Override
			public void handleMessage(Message msg) {
				// TODO Auto-generated method stub
				super.handleMessage(msg);
				if(msg.what == 200){
					width =  msg.arg1;
					 Log.i("TAG", "button1-->"+button1);
					  Log.i("TAG", "width-->"+width);
				}
				
			}
		};
		
		
		return mView;
	}
	
	@Override
	public void onResume() {
		// TODO Auto-generated method stub
		super.onResume();
		initWidget();
		
		
		
	  ViewTreeObserver vto = button1.getViewTreeObserver();
	  vto.addOnGlobalLayoutListener(new OnGlobalLayoutListener() {
		
		@Override
		public void onGlobalLayout() {
			width = button1.getWidth();
			
			Message msg = new Message();
			msg.what = 200;
			msg.arg1 = width;
			mHandler.sendMessage(msg);
			
		}
	});
	 
	  
	}

引用自：http://bbs.csdn.net/topics/390672372