public class MyScrollViewextends ScrollView {
/**
* Runnable延迟执行的时间
*/
private long delayMillis =100;
/**
* 上次滑动的时间
*/
private long lastScrollUpdate = -1;
private RunnablescrollerTask =new Runnable() {
@Override
public void run() {
long currentTime = System.currentTimeMillis();
if ((currentTime -lastScrollUpdate) >100) {
lastScrollUpdate = -1;
onScrollEnd();
}else {
postDelayed(this, delayMillis);
}
}
};
public MyScrollView(Context context) {
this(context, null);
}
public MyScrollView(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
public MyScrollView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
}
@Override
protected void onScrollChanged(int l, int t, int oldl, int oldt) {
super.onScrollChanged(l, t, oldl, oldt);
if (lastScrollUpdate == -1) {
onScrollStart();
postDelayed(scrollerTask, delayMillis);
}
// 更新ScrollView的滑动时间
lastScrollUpdate = System.currentTimeMillis();
}
/**
* 滑动开始
*/
private void onScrollStart() {
mListener.onScrollStart();
}
/**
* 滑动结束
*/
private void onScrollEnd() {
mListener.onScrollEnd();
}
OnScrollListenermListener;
public void setOnScrollListener(OnScrollListener onRefreshListener) {
mListener = onRefreshListener;
}
public interface OnScrollListener {
void onScrollStart();
void onScrollEnd();
}
}
获取到滑动状态之后通过监听回调事件传出去。
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