Question

当我滚动回收器视图然后向后滚动项目互换时，数据会互换。我有单独的项目与子项目的arraylist没有特定的大小。通常，当我向后滚动时，子项目重复和/或子项目的交换。我已经尝试将代码的动态部分移动到oncreateviewholder，但这并没有任何区别。

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();
}

}

Answer 1

那是因为你没有绑定新视图。在每个动态调用中创建一个新的。请在onBindViewHolder中执行你的操作。至于onCreateViewHolder，保持它干净，只对视图充气。

Answer 2

试试这个：

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<span class="box popup-trigger">Trigger popup #1</span>
<span class="box popup-trigger-b">Trigger popup #2</span>
<span class="box popup-trigger-c">Trigger popup #3</span>

<hr/>

<div class="popup-new popup" style="display:none">Popup #1 <span class="popup-btn-close">X</span></div>
<div class="popup-new-b popup" style="display:none">Popup #2 <span class="popup-btn-close">X</span></div>
<div class="popup-new-c popup" style="display:none">Popup #3 <span class="popup-btn-close">X</span></div>

Recyclerview滚动使项目更新

2 个答案: