无法解析方法（android.content.intent）

Question

我是Android开发的新手，我有以下项目结构：

我想从我的activity_category_list班开始我的StoreViewHolder。也就是说，只要单击持有者中的视图，就应该开始类别活动。

这是我的 StoreViewHolder.java 来实现这一目标：

public class StoreViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {

    public TextView txtStoreName;
    public ImageView imageView;

    private ItemClickListener itemClickListener;

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

        txtStoreName = (TextView) itemView.findViewById(R.id.store_name);
        imageView = (ImageView) itemView.findViewById(R.id.store_image);

        itemView.setOnClickListener(this);
    }

    public void setItemClickListener(ItemClickListener itemClickListener) {
        this.itemClickListener = itemClickListener;
    }


    @Override
    public void onClick(View view) {
        itemClickListener.onClick(view, getAdapterPosition(), false);
        Intent categoryList = new Intent(view.getContext(), CategoryList.class);
        this.startActivity(categoryList); // does not compile here
    }
}

我在评论部分得到了标题错误。我试过网上看过的各种方法，但不知怎的，都没用。或者我也试过这个，但没有运气：

 Intent categoryList = new Intent(StoreViewHolder.this, CategoryList.class);
 startActivity(categoryList);

有什么想法吗？

Answer 1

要致电startActivity(intent)，您需要context。因为startActivity(intent)方法来自Context类。在Activity中，您不要像context.startActivity(intent);那样写，因为Activity自Context Acitivty Context延伸Context。在构造函数中传递context.startActivity(intent);并调用public class StoreViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener { public TextView txtStoreName; public ImageView imageView; Context context; private ItemClickListener itemClickListener; public StoreViewHolder(View itemView, Context context) { super(itemView); this.context = context; txtStoreName = (TextView) itemView.findViewById(R.id.store_name); imageView = (ImageView) itemView.findViewById(R.id.store_image); itemView.setOnClickListener(this); } public void setItemClickListener(ItemClickListener itemClickListener) { this.itemClickListener = itemClickListener; } @Override public void onClick(View view) { itemClickListener.onClick(view, getAdapterPosition(), false); Intent categoryList = new Intent(view.getContext(), CategoryList.class); context.startActivity(categoryList); // does not compile here } }

from:

类似问题Calling startActivity() from outside of an Activity context