自定义view继承ScrollView

最新推荐文章于 2019-07-08 15:29:22 发布

zj462136

最新推荐文章于 2019-07-08 15:29:22 发布

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本文链接：https://blog.youkuaiyun.com/zj462136/article/details/80166600

版权

package com.bwie.zhangjunjingdong.view.custom;

import android.content.Context;
import android.util.AttributeSet;
import android.widget.ScrollView;

public class ObservableScrollView extends ScrollView {
    private static final String TAG = "ObservableScrollView";

    public interface IScrollViewListener{
        void  onScrollChanged(int l, int t, int oldl, int oldt);
    }
    IScrollViewListener mScrollViewListener;
    public void setScrollViewListener(IScrollViewListener listener){
        this.mScrollViewListener=listener;
    }

    public ObservableScrollView(Context context) {
        super(context);
    }

    public ObservableScrollView(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public ObservableScrollView(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
    }

    @Override
    protected void onScrollChanged(int x, int y, int oldx, int oldy) {
        super.onScrollChanged(x, y, oldx, oldy);
        if(mScrollViewListener!=null){
            mScrollViewListener.onScrollChanged(x, y, oldx, oldy);
        }
    }
}