如何在RecyclerView中选择和取消选择项目?如何在回收者视图中突出显示选定的项目? [英] how to select and de-select an item in RecyclerView? How to Highlight selected item in recycler view?
本文介绍了如何在RecyclerView中选择和取消选择项目?如何在回收者视图中突出显示选定的项目?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
@Override
public void onBindViewHolder(final mainscreenspecializationadap.MyViewHolder holder, final int positionz) {
this.position = holder.getAdapterPosition();
final specializationpojo album = albumList.get(holder.getAdapterPosition());
holder.txtspecs.setText(album.getSplztnname());
holder.imgspecs.setImageResource(album.getIcon());
holder.linelayout.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
row_index=positionz;
album.setOpened(!album.isOpened());
notifyDataSetChanged();
}
});
if(positionz==row_index){
holder.imageView.setBackground(mContext.getResources().getDrawable(R.drawable.white_circle_background));
holder.txtspecs.setSelected(true);
if (type==1)
{
onClick.onSelected(row_index,album.isOpened(),album.isClosed());
}
else if(type==2)
{ onClick.onSpecialisationSelected(album.getSplzcode(),album.getCount());
}
}
else
{
holder.txtspecs.setSelected(false);
holder.imageView.setBackground(mContext.getResources().getDrawable(R.drawable.green_background));
}
}
-
我有一个回收站视图,我只需要选择一个项目,因此在此基础上,我必须显示一个子列表项目.
I have a recycler view where I need to select only one item, so on that basis, I have to show a sub list items.
现在的问题是,当我取消选择该项目时,下面的子列表项应该被隐藏.
Now the problem is when I unselect that item the below sub list items should be hidden.
请给我建议一个答案,我将非常感谢您的回答.
Please suggest me an answer I will be thankful for the answer.
推荐答案
这是您要求的解决方案
public class AdapterClass extends RecyclerView.Adapter<AdapterClass.ViewHolder> {
private int selected_position = -1;
@Override
public void onBindViewHolder(AdapterClass.ViewHolder holder, final int position) {
if (selected_position == position) {
// do your stuff here like
//Change selected item background color and Show sub item views
} else {
// do your stuff here like
//Change unselected item background color and Hide sub item views
}
// rest of the code here
holder.linelayout.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if(selected_position==position){
selected_position=-1;
notifyDataSetChanged();
return;
}
selected_position = position;
notifyDataSetChanged();
}
});
//rest of the code here
}
}
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