我有一个 Activity 并在那里使用 ViewBinding 没有问题。不是我创建了一个类似的 Fragment 并打算在那里使用 ViewBinding。不幸的是,我收到了错误消息,尽管我按照谷歌开发者页面中提到的关于 ViewBinding 的步骤(https://developer.android.com/topic/libraries/view-binding)
在这里您可以看到 Java 文件:
package com.example.td.barapp;
import android.os.Bundle;
import androidx.fragment.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import com.example.td.barapp.databinding.ActivitySelectionMenuBinding;
/**
* A simple {@link Fragment} subclass.
* Use the {@link Menu_Fragment#newInstance} factory method to
* create an instance of this fragment.
*/
public class Menu_Fragment extends Fragment {
// TODO: Rename parameter arguments, choose names that match
// the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
private static final String ARG_PARAM1 = "param1";
private static final String ARG_PARAM2 = "param2";
// TODO: Rename and change types of parameters
private String mParam1;
private String mParam2;
public Menu_Fragment() {
// Required empty public constructor
}
/**
* Use this factory method to create a new instance of
* this fragment using the provided parameters.
*
* @param param1 Parameter 1.
* @param param2 Parameter 2.
* @return A new instance of fragment Menu_Fragment.
*/
// TODO: Rename and change types and number of parameters
public static Menu_Fragment newInstance(String param1, String param2) {
Menu_Fragment fragment = new Menu_Fragment();
Bundle args = new Bundle();
args.putString(ARG_PARAM1, param1);
args.putString(ARG_PARAM2, param2);
fragment.setArguments(args);
return fragment;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (getArguments() != null) {
mParam1 = getArguments().getString(ARG_PARAM1);
mParam2 = getArguments().getString(ARG_PARAM2);
}
binding.imageButtonCocktailsEn.setOnClickListener(this);
binding.imageButtonCocktailsAlcfreeEn.setOnClickListener(this);
binding.imageButtonLongdrinksEn.setOnClickListener(this);
binding.imageButtonWhiskyEn.setOnClickListener(this);
binding.imageButtonLiquorEn.setOnClickListener(this);
binding.imageButtonBeerEn.setOnClickListener(this);
binding.imageButtonSoftdrinksEn.setOnClickListener(this);
binding.imageButtonHotDrinksEn.setOnClickListener(this);
}
private Menu_FragmentBinding binding;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
return inflater.inflate(R.layout.fragment_menu_, container, false);
//Include ViewBinding
binding = Menu_FragmentBinding.inflate(inflater, container, false);
View view = binding.getRoot();
return view;
}
}
我收到错误消息“无法解析符号 'Menu_FragmentBinding'”和“无法解析方法 'getRoot()'”。我不明白为什么我得到它们。你们中有人有想法吗?我会很感激每一条评论,我会感谢你的帮助。