android tp多点触摸

获取多点触摸tp点数，获取坐标值

@Override
public boolean onTouchEvent(MotionEvent event) {
     
event.getPointerCount()；
for (int j = 0; j < event.getPointerCount(); j++) {
     
    PointF piont = new PointF();
    piont.set(event.getX(j), event.getY(j));
    mPointFList.add(piont);
}
}