在实现单击选择行的RecyclerView中,这种问题可能会出现,其中用户只需要单击一行,但多个行被选中。这是由于RecyclerView重复使用行视图而不重置勾选框的状态所导致的。
因此,修复此问题的解决方案是为RecyclerView中的每一行设置单独的点击监听器,并在单击事件中更新选中状态。同时,在onBindViewHolder方法中,重置单选框的状态以确保每个ViewHolder都始终具有正确的状态。
以下是示例代码:
public class MyAdapter extends RecyclerView.Adapter {
private List mDataList;
public MyAdapter(List dataList) {
this.mDataList = dataList;
}
@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext())
.inflate(R.layout.my_row_layout, parent, false);
return new ViewHolder(view);
}
@Override
public void onBindViewHolder(ViewHolder holder, int position) {
MyData myData = mDataList.get(position);
holder.mTitleTextView.setText(myData.getTitle());
// Reset the checkbox state to ensure correct state
holder.mCheckBox.setChecked(false);
}
@Override
public int getItemCount() {
return mDataList.size();
}
public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
TextView mTitleTextView;
CheckBox mCheckBox;
public ViewHolder(View itemView) {
super(itemView);
mTitleTextView = itemView.findViewById(R.id.title_text);
mCheckBox = itemView.findViewById(R.id.checkbox);
// Set a click listener for the row item
itemView.setOnClickListener(this);
}
@Override
public void onClick(View view) {
int position = getAdapterPosition();
// Update the checkbox state
mCheckBox.setChecked(!mCheckBox.isChecked());
// Update the data item with the new state
MyData myData = mDataList.get(position);
myData.setSelected(mCheckBox.isChecked());
}
}
}
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