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Android adding a popup context menu to a RecyclerView
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
<item
android:id="@+id/menu_custom_edit"
android:title="@string/menu_custom_edit"/>
<item
android:id="@+id/menu_custom_delete"
android:title="@string/menu_custom_delete"/>
</menu>
public class CustomAdapter extends RecyclerView.Adapter<CustomAdapter.ViewHolder> {
private List<CustomObject> objects;
private OnItemSelectedListener listener;
private final boolean withContextMenu;
class ViewHolder extends RecyclerView.ViewHolder
implements View.OnClickListener, View.OnCreateContextMenuListener, PopupMenu.OnMenuItemClickListener {
@BindView(R.id.custom_name)
TextView name;
@BindView(R.id.custom_value)
TextView value;
ViewHolder(View view) {
super(view);
ButterKnife.bind(this, view);
view.setOnClickListener(this);
if (withContextMenu) {
view.setOnCreateContextMenuListener(this);
}
}
@Override
public void onClick(View v) {
int position = getAdapterPosition();
if (listener != null) {
listener.onCustomerSelected(objects.get(position));
}
}
@Override
public void onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) {
PopupMenu popup = new PopupMenu(v.getContext(), v);
popup.getMenuInflater().inflate(R.menu.custom_menu, popup.getMenu());
popup.setOnMenuItemClickListener(this);
popup.show();
}
@Override
public boolean onMenuItemClick(MenuItem item) {
if (listener != null) {
CustomObject object = objects.get(getAdapterPosition());
listener.onCustomerMenuAction(object, item);
}
return false;
}
}
public CustomerAdapter(List<CustomObject> objects, OnItemSelectedListener listener, boolean withContextMenu) {
this.listener = listener;
this.objects = objects;
this.withContextMenu = withContextMenu;
}
public interface OnItemSelectedListener {
void onSelected(CustomObject object);
void onMenuAction(CustomObject object, MenuItem item);
}
@Override
public CustomerAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.snippet_custom_object_line, parent, false);
return new ViewHolder(v);
}
@Override
public void onBindViewHolder(CustomAdapter.ViewHolder holder, int position) {
CustomObject object = objects.get(position);
holder.name.setText(object.getName());
holder.value.setText(object.getValue());
}
@Override
public int getItemCount() {
return objects.size();
}
}
public class CustomFragment extends Fragment implements CustomAdapter.OnItemSelectedListener {
@BindView(R.id.custom_objects)
RecyclerView objects;
private List<CustomObject> objects;
@Override
public void onResume() {
super.onResume();
setupObjectList();
}
private void setupObjectList() {
objects.setLayoutManager(new LinearLayoutManager(getContext()));
CustomAdapter customAdapter = new CustomAdapter(objects, this, true);
objects.setAdapter(customAdapter);
}
@Override
public void onSelected(CustomObject object) {
// Do something on select
}
@Override
public void onMenuAction(CustomObject object, MenuItem item) {
switch (item.getItemId()) {
case R.id.menu_custom_edit:
// Add edit screen
break;
case R.id.menu_custom_delete:
objects.remove(object);
setupObjectList();
break;
}
}
}
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