你应该查看视图生命周期:http://developer.android.com/reference/android/view/View.html通常你不应该知道宽度和高度，直到你的活动进入onResume状态。

像这样使用视图的post方法

post(new Runnable() {   
    @Override
    public void run() {
        Log.d(TAG, "width " + MyView.this.getMeasuredWidth());
        }
    });

ViewTreeObserver和onWindowFocusChanged()根本不是必要的。

如果你膨胀的TextView作为布局和/或放一些内容在它和设置LayoutParams然后你可以使用getMeasuredHeight()和getMeasuredWidth()。

BUT you have to be careful with LinearLayouts (maybe also other ViewGroups). The issue there is, that you can get the width and height after onWindowFocusChanged() but if you try to add some views in it, then you can't get that information until everything have been drawn. I was trying to add multiple TextViews to LinearLayouts to mimic a FlowLayout (wrapping style) and so couldn't use Listeners. Once the process is started, it should continue synchronously. So in such case, you might want to keep the width in a variable to use it later, as during adding views to layout, you might need it.

我猜这就是你需要看的:使用视图的onSizeChanged()。下面是一个关于如何使用onSizeChanged()来动态获取布局或视图的高度和宽度的扩展代码片段http://syedrakibalhasan.blogspot.com/2011/02/how-to-get-width-and-height-dimensions.html

你可以使用OnResume()中调用的广播

例如:

int vh = 0;   
int vw = 0;

public void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.maindemo);  //<- includes the grid called "board"

      registerReceiver(new BroadcastReceiver() {
            @Override
            public void onReceive(Context context, Intent intent) {
                TableLayout tl = (TableLayout) findViewById(R.id.board);  
                tl = (TableLayout) findViewById(R.id.board);
                vh = tl.getHeight();       
                vw = tl.getWidth();               
            }
      }, new IntentFilter("Test"));
}

protected void onResume() {
        super.onResume();

        Intent it = new Intent("Test");
        sendBroadcast(it);

}

你不能在OnCreate ()， onStart()，甚至在onResume()中获得视图的高度，原因是kcoppock响应

我试图使用onGlobalLayout()做一些自定义格式的TextView，但@乔治贝利注意到，onGlobalLayout()确实被调用两次:一次在初始布局路径上，第二次修改文本后。

View.onSizeChanged()对我来说工作得更好，因为如果我在那里修改文本，该方法只被调用一次(在布局传递期间)。这需要子类化TextView，但在API级别11+视图。addOnLayoutChangeListener()可以用来避免子类化。

还有一件事，为了在view . onsizechanged()中获得正确的视图宽度，layout_width应该设置为match_parent，而不是wrap_content。