在Android裏放置一個ImageView，寬和高都是200.
1、在Android OnCreate裏如果直接使用iv.GetWidth()返回值為0.

2、如果使用網上
int i = View.MeasureSpec.makeMeasureSpec(0, 0);
int j = View.MeasureSpec.makeMeasureSpec(0, 0);
mSuperMan.measure(i, j);
mSuperManWidth = mSuperMan.getMeasuredWidth();//圖片的實際大小
mSuperManHeight = mSuperMan.getMeasuredHeight();

im1.post(new Runnable() {

    @Override
    public void run() {
        int w=im1.getWidth();
        int h=im1.getWidth();
    }
    });
w,h顯示正常

ImageView獲取寬高