android - 如何在Android的屏幕上同时获得两个点的坐标？

Question

我想知道当屏幕同时触摸到屏幕上的点时，是否可以获得两组正确的坐标点。如果是，那么如何使用它。谷歌搜索但没有得到任何满意的结果。请帮忙？

Answer 1

使用以下两种方法代替 getX 和 getY：

public final float getX (int pointerIndex)
        Since: API Level 5

        Returns the X coordinate of this event for the given pointer index (use getPointerId(int) to find the pointer identifier for this index). Whole numbers are pixels; the value may have a fraction for input devices that are sub-pixel precise.


public final float getY (int pointerIndex)
        Since: API Level 5

        Returns the Y coordinate of this event for the given pointer index (use getPointerId(int) to find the pointer identifier for this index). Whole numbers are pixels; the value may have a fraction for input devices that are sub-pixel precise.
        Parameters
        pointerIndex    Raw index of pointer to retrieve. Value may be from 0 (the first pointer that is down) to getPointerCount()-1.