Question

我已经使用网格布局管理器实现了一个回收站视图来创建一个类别列表。现在基本上我已经尝试在OnCreateViewholder方法中的持有者中实现setOnClick Listener。在运行代码时，我收到此错误

android.util.AndroidRuntimeException：从Activity上下文外部调用startActivity（）需要FLAG_ACTIVITY_NEW_TASK标志。这真的是你想要的吗？

这是我的适配器代码

package com.paaltao.Adapters;

import android.content.Context;
import android.content.Intent;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;

import com.paaltao.R;
import com.paaltao.activity.ProductDetailsActivity;
import com.paaltao.classes.Category;

import java.util.Collections;
import java.util.List;

/**
 * Created by Arindam on 02-Feb-15.
 */
public class CategoryAdapter extends RecyclerView.Adapter<CategoryAdapter.CategoryHolder> {
    private Context context;
    private LayoutInflater inflater;
    private View view;
    List<Category> data = Collections.emptyList();

    public CategoryAdapter(Context context ,List<Category> data){
        this.data = data;
        this.context= context;
    }
    @Override
    public CategoryHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        inflater = LayoutInflater.from(parent.getContext());

        view = inflater.inflate(R.layout.category_card, parent, false);


        CategoryHolder holder = new CategoryHolder(view);
        holder.categoryImage.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(context,ProductDetailsActivity.class);
                context.startActivity(intent);

                }
        });
        return holder;
    }

    @Override
    public void onBindViewHolder(CategoryHolder holder, int position) {

        Category current = data.get(position);
        holder.categoryName.setText(current.getCategory_name());
        holder.categoryImage.setImageResource(current.getCategory_id());

    }

    @Override
    public int getItemCount() {
        return data.size();
    }

    class CategoryHolder extends RecyclerView.ViewHolder {
        TextView categoryName;
        ImageView categoryImage;

        public CategoryHolder(View itemView) {
            super(itemView);

            categoryImage = (ImageView) itemView.findViewById(R.id.category_image);
            categoryName = (TextView) itemView.findViewById(R.id.category_name);

        }
    }
}

Answer 1

private Context context;中的上下文很可能不是活动上下文。初始化时，您需要将活动作为CategoryAdapter的第一个参数传递：CategoryAdapter adapter = new CategoryAdapter(activity, data);

无法从Recycler View适配器的setOnClick侦听器中启动活动

1 个答案: