我已经用网格布局管理器实现了一个recycler视图来创建一个类别列表。现在基本上我已经尝试在oncreateviewholder方法内部的holder中实现了一个setonclick监听器。在运行代码时,我发现这个错误
android.util.AndroidRuntimeException:从活动上下文外部调用startActivity()需要标志“活动”和“新建”任务标志。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);
}
}
}
最佳答案
private Context context;
中的上下文很可能不是活动上下文。初始化时,需要将活动作为CategoryAdapter的第一个参数传递:CategoryAdapter adapter = new CategoryAdapter(activity, data);