相关疑难解决方法(0)

嗨,我在RelativeLayout中有一个ImageView,现在我怎样才能在屏幕上获得imageview的X和Y位置？

我试过了

getLocationOnScreen
log(mPhoto.getLeft());
log(mPhoto.getScrollX());
log(mPhoto.getX());
log(mPhoto.getTranslationX());

但他们都返回0.

在将imageview设置为居中之后调用上述函数

    RelativeLayout.LayoutParams lp1 = new RelativeLayout.LayoutParams(mFaceWidth, mFaceHeight);
    lp1.addRule(RelativeLayout.CENTER_HORIZONTAL);
    lp1.addRule(RelativeLayout.CENTER_VERTICAL);
    mPhoto.setLayoutParams(lp1);
    mPhoto.requestLayout();