我想臨時禁用onLongPressListener,我在我的適配器的ViewHolder中設置。我想禁用它,因爲我想實現RecyclerView的拖放功能(以允許用戶重新排列項目)。如何禁用ViewHolder中的onLongPressListener?
目前,長按聽衆允許用戶重命名一個項目,我想當用戶按下「重新排列」按鈕(在工具欄中)我想禁用viewHolder的長按聽衆並激活拖放功能。我不知道如何禁用在recyclerview的每個視圖上設置的偵聽器。
這是我的適配器代碼:
public class GroceryItemsAdapter extends RecyclerView.Adapter<GroceryItemsAdapter.ShoppingListViewHolder> {
private ArrayList<String> mItems;
private Context mContext;
private SharedPreferences mSharedPreferences;
private SharedPreferences.Editor mEditor;
private MaterialDialog addItemdialog;
public static String nameOfList;
public GroceryItemsAdapter(Context context, ArrayList<String> items, SharedPreferences preferences, SharedPreferences.Editor editor, String nameOfList) {
mItems = items;
mContext = context;
mSharedPreferences = preferences;
mEditor = editor;
this.nameOfList = nameOfList;
}
@Override
public ShoppingListViewHolder onCreateViewHolder(ViewGroup viewGroup, int position) {
View view = LayoutInflater.from(mContext).inflate(R.layout.shopping_list_item,viewGroup,false);
ShoppingListViewHolder viewHolder = new ShoppingListViewHolder(view);
return viewHolder;
}
@Override
public void onBindViewHolder(ShoppingListViewHolder shoppingListViewHolder, int position) {
shoppingListViewHolder.bindShoppingList(mItems.get(position));
}
@Override
public int getItemCount() {
return mItems.size();
}
public class ShoppingListViewHolder extends RecyclerView.ViewHolder implements CompoundButton.OnCheckedChangeListener, View.OnLongClickListener{
public TextView mShoppingListItem;
public CheckBox mCheckBox;
public TextView mEmptyTextView;
public ShoppingListViewHolder(View itemView) {
super(itemView);
mShoppingListItem = (TextView) itemView.findViewById(R.id.shoppingListItem);
mCheckBox = (CheckBox) itemView.findViewById(R.id.shoppingListCheckBox);
View rootView = ((Activity)mContext).getWindow().getDecorView().findViewById(android.R.id.content);
mEmptyTextView = (TextView)rootView.findViewById(R.id.list_empty);
mEmptyTextView.setVisibility(View.INVISIBLE);
mCheckBox.setOnCheckedChangeListener(this);
itemView.setOnLongClickListener(this);
}
public void bindShoppingList(String item){
mShoppingListItem.setText(item);
mCheckBox.setChecked(false);
}
}
使用一個標誌來啓用/禁用長按監聽器,當點擊工具欄按鈕時激活標誌並在完成拖放功能時禁用標誌。 –
是的,嘗試過,但這並沒有訣竅,因爲我在創建適配器時設置了點擊監聽器,並且如果在此之後我無法禁用。改變旗子後,我試圖改變notifydataset並且它也沒有工作。 –