Android编程获取组件尺寸大小的方法

//测量方法
int width =View.MeasureSpec.makeMeasureSpec(0,View.MeasureSpec.UNSPECIFIED);
int height =View.MeasureSpec.makeMeasureSpec(0,View.MeasureSpec.UNSPECIFIED);
view.measure(width,height);
int height=view.getMeasuredHeight();
int width=view.getMeasuredWidth();

//增加组件绘制之前的监听
ViewTreeObserver vto =view.getViewTreeObserver();
vto.addOnPreDrawListener(new ViewTreeObserver.OnPreDrawListener() {
  @Override public ooleanonPreDraw() {
    int height =view.getMeasuredHeight();
    int width =view.getMeasuredWidth();
  }
});

//增加整体布局监听
ViewTreeObserver vto = view.getViewTreeObserver();
vto.addOnGlobalLayoutListener(new OnGlobalLayoutListener(){
  @Override public voidonGlobalLayout() {
   view.getViewTreeObserver().removeGlobalOnLayoutListener(this);
  int height =view.getMeasuredHeight();
  int width =view.getMeasuredWidth();
  }
});