ViewPager嵌套联动效果.gif
代码：
/**
* ================================
* Des: 联动滑动 ViewPager
* Created by kele on 2021/2/23.
* E-mail:984127585@qq.com
* ================================
*/
public class LinkageSlidingViewPager extends ViewPager {
public LinkageSlidingViewPager(Context context) {
this(context, null);
}
public LinkageSlidingViewPager(Context context, AttributeSet attrs) {
super(context, attrs);
}
@Override
public boolean dispatchTouchEvent(MotionEvent ev) {
switch (ev.getAction()) {
case MotionEvent.ACTION_DOWN:
getParent().requestDisallowInterceptTouchEvent(true);
break;
case MotionEvent.ACTION_MOVE:
int curPosition = this.getCurrentItem();
int count = this.getAdapter().getCount();
// 当当前页面在最后一页和第0页的时候，由父亲拦截触摸事件
if (curPosition == count - 1 || curPosition == 0) {
getParent().requestDisallowInterceptTouchEvent(false);
} else {//其他情况，由孩子拦截触摸事件
getParent().requestDisallowInterceptTouchEvent(true);
}
break;
}
return super.dispatchTouchEvent(ev);
}
}
