package com.yuyh.library.view.list;
import android.content.Context;
import android.util.AttributeSet;
import android.util.DisplayMetrics;
import android.widget.HorizontalScrollView;
public class BouncyHScrollView extends HorizontalScrollView {
private static final int MAX_X_OVERSCROLL_DISTANCE = 200;
private Context mContext;
private int mMaxXOverscrollDistance;
public BouncyHScrollView(Context context) {
super(context);
mContext = context;
initBounceDistance();
}
public BouncyHScrollView(Context context, AttributeSet attrs) {
super(context, attrs);
mContext = context;
initBounceDistance();
}
public BouncyHScrollView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
mContext = context;
initBounceDistance();
}
private void initBounceDistance(){
final DisplayMetrics metrics = mContext.getResources().getDisplayMetrics();
mMaxXOverscrollDistance = (int) (metrics.density * MAX_X_OVERSCROLL_DISTANCE);
}
@Override
protected boolean overScrollBy(int deltaX, int deltaY, int scrollX, int scrollY, int scrollRangeX, int scrollRangeY, int maxOverScrollX, int maxOverScrollY, boolean isTouchEvent){
//这块是关键性代码
return super.overScrollBy(deltaX, deltaY, scrollX, scrollY, scrollRangeX, scrollRangeY, mMaxXOverscrollDistance, maxOverScrollY, isTouchEvent);
}
}