当我滚动回收视图,然后向后滚动项目互换,数据被交换。我有单独的子项目列表,没有特定的大小。多数情况下,当我向后滚动时,子项目有重复和/或子项目交换。我已经尝试将代码的动态部分移至oncreateviewholder,但这没有任何区别。Recyclerview滚动使项目更新
private LinkedHashMap<String, ArrayList<String>> messages;
private Context mContext;
int k =0;
public static class ViewHolder extends RecyclerView.ViewHolder {
// each data item is just a string in this case
public TextView mSmsSender;
public LinearLayout smsContainer;
public ViewHolder(View v) {
super(v);
mSmsSender = (TextView)v.findViewById(R.id.smsSender);
smsContainer = (LinearLayout) v.findViewById(R.id.smsContainer);
}
}
public SmsAdapter(LinkedHashMap<String, ArrayList<String>> messages, Context context){
this.messages = messages;
mContext = context;
}
@Override
public SmsAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
// create a new view
View v = LayoutInflater.from(parent.getContext())
.inflate(R.layout.sms_message, parent, false);
// set the view's size, margins, paddings and layout parameters
ViewHolder vh = new ViewHolder(v);
final String smsSender = (new ArrayList<String>(messages.keySet())).get(k);
k++;
ArrayList<String> sms = messages.get(smsSender);
for(int i =0;i<sms.size();i++){
TextView vt = new TextView(mContext);
RelativeLayout.LayoutParams lp = new RelativeLayout.
LayoutParams(LinearLayoutCompat.LayoutParams.WRAP_CONTENT,
LinearLayoutCompat.LayoutParams.WRAP_CONTENT);
vt.setLayoutParams(lp);
vt.setPadding(3,3,3,3);
vt.setText(sms.get(i));
vh.smsContainer.addView(vt);
}
return vh;
}
@Override
public void onBindViewHolder(SmsAdapter.ViewHolder holder, int position) {
final String smsSender = (new ArrayList<String>(messages.keySet())).get(position);
holder.mSmsSender.setText(smsSender);
}
@Override
public int getItemCount() {
return messages.size();
}
}
在onBindViewHolder,每次您要创建一个列表,你应该创建它一次,然后就打电话联系上 – lelloman
与@lelloman,新的ArrayList同意(messages.keySet( ))应该放在构造函数 –
anhtuannd
中但是仍然存在相同的问题。 –