RecycleView , some items' subView doesn't show correctly - android-recyclerview

Question

in fragment
mAdapter = new MessageAdapter(this);
mRV.setLayoutManager(new LinearLayoutManager(getActivity(),LinearLayoutManager.VERTICAL,false));
mRV.setItemAnimator(new DefaultItemAnimator());
DividerItemDecoration itemDecoration = new DividerItemDecoration.Builder()
.setOffsetLeft(ScreenUtil.dip2px(getActivity(), 60 + 10) + this.getResources().getDimensionPixelOffset(R.dimen.horizontal_margin))
.build(getActivity());
mRV.addItemDecoration(itemDecoration);
mRV.setItemViewCacheSize(15);
mRV.setAdapter(mAdapter);
in adapter
#Override
public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
return new MessageItemHolder(LayoutInflater.from(parent.getContext()).inflate(R.layout.w_message_item,parent,false));
}
#Override
public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
((RVItemInterface)holder).setAdapter(this);
((RVItemInterface)holder).update(dataList.get(position),position);
}
in holder
public class MessageItemHolder extends RecyclerView.ViewHolder implements RVItemInterface{
private RoundAvatar mAvatar;
private TextView mTitle;
private TextView mContent;
private TextView mTime;
private BaseRVAdapter mAdapter;
private MsgDecorVo mMsgDecorVo;
...
#Override
public void update(Object obj, final int position) {
reset();
mMsgDecorVo = (MsgDecorVo) obj;
if(mMsgDecorVo.type == MsgDecorVo.TYPE_CATEGORY){
updateCategory();
MsgVo msgVo = mMsgDecorVo.msgVo;
if(msgVo.getMsg() == null || msgVo.getMsg().equals("")){
mContent.setVisibility(View.GONE);
}else {
mContent.setVisibility(View.VISIBLE);
mContent.setText(msgVo.getMsg());
}
if(msgVo.getTime() == 0){
mTime.setVisibility(View.GONE);
}else {
mTime.setVisibility(View.VISIBLE);
mTime.setText(TimeUtil.transformLong2DateString(msgVo.getTime()));
}
itemView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
dealCategoryClick();
}
});
}else if(mMsgDecorVo.type == MsgDecorVo.TYPE_CONVERSATION){
...
mContent.setText(ImUtil.getMsgContent(message));
mTime.setText(TimeUtil.transformLong2DateString(message.getMsgTime()));
if(chatUserVo != null){
..
}else {
..
}
}
}
//
private void updateCategory(){
...
}
//
private void dealCategoryClick(){
...
}
#Override
public void setAdapter(RecyclerView.Adapter adapter) {
mAdapter = (BaseRVAdapter) adapter;
}
#Override
public void reset() {
mAvatar.setOnClickListener(null);
mAvatar.setAvatar(R.drawable.avatar_default_circle);
mAvatar.hideTagBottom();
mAvatar.hideTagTop();
}
}
these code in holder
mContent.setText(ImUtil.getMsgContent(message));
mTime.setText(TimeUtil.transformLong2DateString(message.getMsgTime()));
has run
but when I scrolled,some of items doesn't show correctly ,the time and content was gone!
if I notify the recyclerview ,it goes right, and if i scroll again,it will still be wrong
just like the image,you can see some items' (time & content) was gone!
http://g.picphotos.baidu.com/album/s%3D900%3Bq%3D90/sign=297cc7510946f21fcd345253c61f1a5d/a686c9177f3e6709378bcc5538c79f3df9dc5595.jpg "tooltip"

Answer 1

Well, you don't have the full code but I assume it is happening because you are not resetting your view states properly.
For Instance, in your updateCode, if type = TYPE_CATEGORY, you set the mTime's visibility depending on whether getTime is 0 or not. But as you scroll, that row might be re-used for
TYPE_CONVERSATION in which case, mTime's visibility will NOT be updated.