Android RecyclerView OnScrollListener

Question

public class MyRecyclerView extends RecyclerView implements RecyclerView.OnScrollListener
{
/**

• 记录当前第一个View */ private View mCurrentView;

private OnItemScrollChangeListener mItemScrollChangeListener;

public void setOnItemScrollChangeListener(OnItemScrollChangeListener mItemScrollChangeListener)
{
this.mItemScrollChangeListener = mItemScrollChangeListener;
}

public interface OnItemScrollChangeListener
{
void onChange(View view, int position);
}

public MyRecyclerView(Context context, AttributeSet attrs)
{
super(context, attrs);
// TODO Auto-generated constructor stub
this.setOnScrollListener(this);
}

@Override
protected void onLayout(boolean changed, int l, int t, int r, int b)
{
super.onLayout(changed, l, t, r, b);

mCurrentView = getChildAt(0);

if (mItemScrollChangeListener != null)
{
    mItemScrollChangeListener.onChange(mCurrentView, getChildPosition(mCurrentView));
}

}

@Override
public void onScrollStateChanged(int arg0)
{
}

/**
*

• 滚动时，判断当前第一个View是否发生变化，发生才回调
  */
  @Override
  public void onScrolled(int arg0, int arg1)
  {
  View newView = getChildAt(0);

  if (mItemScrollChangeListener != null)
  {
  if (newView != null && newView != mCurrentView)
  {
  mCurrentView = newView ;
  mItemScrollChangeListener.onChange(mCurrentView, getChildPosition(mCurrentView));
  }
  }

}

}
各位版主大神，这种是什么错误，该怎么解决呢？

Answer 1

你仔细看一下，这个不是接口，是类。需要extends
而不是implememt 。希望采纳。