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[英]Unable to call method in Adapter from ViewHolder (RecyclerView)
[英]Unable to call method in Adapter(onBindViewHolder) from ViewHolder (RecycleView)
我在以前的 Android Studio 中从事过同一个项目,但现在在这个较新的版本中,我无法在同一个项目上编码!
我在Viewholder(Adapter)
中编写了setData
方法,当我尝试在onBindViewHolder{.. }
中调用此方法时,它无法识别此方法。 (查看上传的图像)
当我按Atl + Enter时,它显示“重命名参考”。
错误抛出线 - 34 要点: https://gist.github.com/Reevan799/0babda6746136105f3c4fbdab1c12ae5#file-categoryadapter-java-L34
获取图像时出错 URL: https://ibb.co/Kq3rg3G
代码:
package com.example.generalknowledgequiz;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import androidx.annotation.NonNull;
import androidx.recyclerview.widget.RecyclerView;
import com.bumptech.glide.Glide;
import java.util.List;
import de.hdodenhof.circleimageview.CircleImageView;
public class CategoryAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
private List<CategoryModel> categoryModelList;
public CategoryAdapter(List<CategoryModel> categoryModelList) {
this.categoryModelList = categoryModelList;
}
@NonNull
@Override
public RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.category_item,parent,false);
return new Viewholder(view);
}
@Override
public void onBindViewHolder(@NonNull RecyclerView.ViewHolder holder, int position) {
holder.setData(categoryModelList.get(position).getImageurl(),categoryModelList.get(position).getTitle()); #Error Causing Line..
}
@Override
public int getItemCount() {
return categoryModelList.size();
}
class Viewholder extends RecyclerView.ViewHolder{
private CircleImageView imageView;
private TextView title;
public Viewholder(@NonNull View itemView) {
super(itemView);
imageView = itemView.findViewById(R.id.imageview);
title = itemView.findViewById(R.id.title);
}
private void setData(String url, String title){
Glide.with(itemView.getContext()).load(url).into(imageView);
this.title.setText(title);
}
}
}
setData
在 Android Studio ( onBindViewHolder
) 中以红色显示
更改用于RecyclerView.Adapter
的泛型类型。 您的 class 声明应为:
public class CategoryAdapter extends RecyclerView.Adapter<CategoryAdapter.Viewholder> {
...
}
它还需要您更改覆盖的方法声明。
返回类型更改为Viewholder
:
@NonNull @Override public Viewholder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) { View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.category_item,parent,false); return new Viewholder(view); }
参数类型更改为Viewholder
:
@Override public void onBindViewHolder(@NonNull Viewholder holder, int position) { holder.setData(categoryModelList.get(position).getImageurl(),categoryModelList.get(position).getTitle()); #Error Causing Line.. }
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