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