当用户单击RecyclerView项目时,我正在尝试从数据库中删除项目。“确认对话框”打开,如果用户按“是”,它将从Firebase中删除项目。
我认为问题是由于上下文原因,警报对话框未在应用中显示,因此我应该在上下文中输入什么以在屏幕上显示alertDialog
public void onBindViewHolder(@NonNull final DishViewHolderModify holder, int position) {
final Dish dish = dishList.get(position);
holder.textViewDishName.setText(dish.getmName());
Picasso.get().load(dish.getmImageUrl()).networkPolicy(NetworkPolicy.OFFLINE).into(holder.imageViewDishImage, new Callback() {
@Override
public void onSuccess() {
}
@Override
public void onError(Exception e) {
Picasso.get().load(dish.getmImageUrl()).into(holder.imageViewDishImage);
}
});
holder.itemView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Log.d("Click Happen","Yes");
final String dishName = holder.textViewDishName.getText().toString();
new AlertDialog.Builder(v.getContext()) // problem over here
.setTitle("Delete Dish")
.setMessage("Are you sure you want to delete")
.setIcon(R.drawable.ic_delete_forever_black_24dp)
.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
letsDeleteDish(dishName);
}
}).setNegativeButton("No",null);
}
});
}
答案 0 :(得分:1)
我相信您的问题是您没有在show()
实例上调用AlertDialog.Builder
。我没有发现您的Context
参数有问题。
这是构建器的最后一行:
}).setNegativeButton("No",null);
可能看起来应该像这样:
}).setNegativeButton("No",null)
.show();