Android-在回收站视图中单击项目退出活动

Question

I've got a bunch of list items in my RecyclerView. I am handling the clicks properly for each item, but I need to close the activity when any item is clicked. Becuase RecyclerView doesn't have setOnItemClickListener method, I have to do this within the adapter:

@Override
public void onBindViewHolder(final Holder holder, int position) {
    // ...

    holder.flagNameTextView.setText(arrayList.get(position).getName());

    holder.itemView.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            // Go back to the previous activity
            // such as onBackPressed();
        }
    });
}

But of course, the adapter is not extending the Activity, so I can't use onBackPressed() or finish() .

How can I do this?

Answer 1

Use the Following:

Declare context globally.

Context c;

Then type-cast context with your activity.

((YourActivity)c).finish();

Hope this helps.

Answer 2

You can pass a reference of your activity throw the adapter constructor and call Activity.finish();

Hope this Helps.

Sorry for my english.

Answer 3

您可以从flagNameTextView获取上下文：

((Activity)holder.flagNameTextView.getContext()).finish();  

Answer 4

Just use YourActivityName.this.finish().

By adding the Activity name you are telling android which "this" you want.

This will only work if your adapter is NOT defined as a static class.

Answer 5

Besides, you can define a interface callback like OnClickListener in RecyclerView adapter. Then Implement this interface in Activity, pass it into the adapter and then use it in View's OnClickListner callback.