0
点赞
收藏
分享

微信扫一扫

RecyclerView 获取item,删除item的坑


场景:点击子布局中的imageview替换其图片,可以对imageview进行点击事件监听,也可以用一种更优雅的方式获取item,且使用简单。

获取item

自定义ViewHolder

public class ViewHolder extends RecyclerView.ViewHolder
private Context mContext;
private View mItemView;
private SparseArray<View> mViews;
public ViewHolder(View itemView) {
super(itemView);
mViews=new SparseArray<>();
mItemView=itemView;
mItemView.setTag(this);
}
public static ViewHolder getHolder(Context context, View itemview,ViewGroup parent,int layoutid){
if (itemview==null){
itemview= LayoutInflater.from(context).inflate(layoutid,parent,false);
return new ViewHolder(itemview);
}else {
ViewHolder vh= (ViewHolder) itemview.getTag();
return vh;
}
}
public <T extends View> T getView(int id){
View view=mViews.get(id);
if (view==null){
view=mItemView.findViewById(id);
mViews.put(id,view);
}
return (T) view;
}
public void setImageRes(int id,int res){
ImageView img= (ImageView) mItemView.findViewById(id);
img.setImageResource(res);
}
public void setText(int id,String str){
TextView tv= (TextView) mItemView.findViewById(id);
tv.setText(str);
}
public void setOnClick(int

使用

@Override
public CViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
return CViewHolder.getHolder(parent.getContext(), null, parent, R.layout.item_collection);
}

@Override
public void onBindViewHolder(final CViewHolder holder, final int

删除item坑

.remove(i);
notifyItemRemoved(i);
//必须调用这行代码
notifyItemRangeChanged(i, mModels.size());


举报

相关推荐

0 条评论