我正在尝试在回收者视图中添加上下文菜单,但是它不起作用。
在我的适配器中,我添加了以下内容
public class ViewHolder extends RecyclerView.ViewHolder implements
View.OnCreateContextMenuListener {
TextView mTitle, mDescription;
public ViewHolder(View itemView) {
super(itemView);
mTitle = itemView.findViewById(R.id.textViewTitle);
mDescription = itemView.findViewById(R.id.textViewDescription);
itemView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
int position = getAdapterPosition();
String title = mTitle.getText().toString();
String descrpition = mDescription.getText().toString();
if (mClickListener!=null)
mClickListener.onItemClick(v, position, title, descrpition);
}
});
itemView.setOnLongClickListener(new View.OnLongClickListener() {
@Override
public boolean onLongClick(View v) {
int position = getAdapterPosition();
if (onRecyclerViewLongClickListner!=null)
onRecyclerViewLongClickListner.onItemLongClick(position);
return true;
}
});
itemView.setOnCreateContextMenuListener(this);
}
@Override
public void onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) {
menu.setHeaderTitle("Select options");
menu.add(0,v.getId(),0,"Option1");
}
}
在mainActivity中,我添加了
registerForContextMenu(recyclerView);
最佳答案
问题出在您的OnLongClickListener上。当您返回true时,它会消耗大量点击事件。
从onLongClick
方法文档中:
如果回调消耗了长按,则为true,否则为false。
由于需要在onLongClick中创建ContextMenu
,因此必须从false
返回OnLongClickListener
,以便系统可以创建ContextMenu
。
更新您的OnLongClickListener
itemView.setOnLongClickListener(new View.OnLongClickListener() {
@Override
public boolean onLongClick(View v) {
int position = getAdapterPosition();
if (onRecyclerViewLongClickListner!=null)
onRecyclerViewLongClickListner.onItemLongClick(position);
return false;
}
});