android – onScrollChanged在scrollView中多次触发滚动结束

我已经实现了一个侦听器类来检测链接 https://gist.github.com/marteinn/9427072的滚动视图结束

public class ResponsiveScrollView extends ScrollView {

private OnBottomreachedListener listener;

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

@Override
protected void onScrollChanged(int l,int t,int oldl,int oldt) {
    View view = getChildAt(getChildCount()-1);
    int diff = view.getBottom()-(getHeight()+getScrollY());
    if (diff == 0 && listener!= null) {
        listener.onBottomreached(this);
    }
    super.onScrollChanged(l,t,oldl,oldt);
}

public OnBottomreachedListener getBottomChangedListener() {
        return listener;
}

public void setBottomreachesListener(OnBottomreachedListener onBottomreachedListener) {
    this.listener = onBottomreachedListener;
}

public interface OnBottomreachedListener {
    public void onBottomreached(View view);
   }
}

监听器设置为scrollView：

scrollView.setBottomreachesListener(new GenericScrollListerner(this));

我的GenericScrollListerner类：

public class GenericScrollListerner implements ResponsiveScrollView.OnBottomreachedListener {
private Context mContext;

public GenericScrollListerner(Context context) {
    this.mContext = context;
}

@Override
public void onBottomreached(View view) {
    Log.d("ScrollView","Scroll end");
    String tag = (String) view.getTag();
    Toast.makeText(mContext,"Scroll end with tag" +tag,Toast.LENGTH_SHORT).show();
}

}

我的问题是onBottomreached在大多数情况下都会触发两次.如何处理这个问题???

解决方法

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