Scroller的使用

1. scroller定义

private Scroller mScroller;
mScroller = new Scroller(context);

2. startScroll

mScroller.startScroll(startX, startY, dx, dy);
invalidate();

3. computeScroll

@Override
public void computeScroll() {
        if (mScroller.computeScrollOffset()) {
            scrollTo(0, mScroller.getCurrY());
            invalidate();
        }
}