android - Android相当于UIView的convertRect/convertPoint函数是什么？

UIView具有以下内容:

- convertPoint:toView:
- convertPoint:fromView:
- convertRect:toView:
- convertRect:fromView:

什么是Android等价物？更一般地，给定两个View，我如何在第一个View的坐标系中得到第二个ojit_code的rect？

最佳答案

我认为sdk中没有等效的功能，但是您似乎可以使用getLocationOnScreen轻松编写自己的实现:

public static Point convertPoint(Point fromPoint, View fromView, View toView){
    int[] fromCoord = new int[2];
    int[] toCoord = new int[2];
    fromView.getLocationOnScreen(fromCoord);
    toView.getLocationOnScreen(toCoord);

    Point toPoint = new Point(fromCoord[0] - toCoord[0] + fromPoint.x,
            fromCoord[1] - toCoord[1] + fromPoint.y);

    return toPoint;
}

public static Rect convertRect(Rect fromRect, View fromView, View toView){
    int[] fromCoord = new int[2];
    int[] toCoord = new int[2];
    fromView.getLocationOnScreen(fromCoord);
    toView.getLocationOnScreen(toCoord);

    int xShift = fromCoord[0] - toCoord[0];
    int yShift = fromCoord[1] - toCoord[1];

    Rect toRect = new Rect(fromRect.left + xShift, fromRect.top + yShift,
            fromRect.right + xShift, fromRect.bottom + yShift);

    return toRect;
}

关于android - Android相当于UIView的convertRect/convertPoint函数是什么？，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/31578204/