如何使用 itemview OnClickListener 从图库中获取图像

Question

holder.itemView.setOnClickListener(new View.OnClickListener() {
    
    @Override
    public void onClick(View view) {

//
    }
});

Now, it is impossible to use startActivityForResult.

I have to use a launcher, but I don't know what to do because it's a click event that happens in the item view and I'm going to put the image in the item view

I tried various methods, but they were all for activities, so they didn't work.

Answer 1

You need either to cast the context to Activity, or to pass the onClickListener to the adapter as following

1. Create the clickListener

   public interface MyClickListener { void onItemClick(MyModel model); }

2. In your adapter class:

    public class MyAdapter extends RecyclerView.Adapter<ViewHolder> { private MyClickListener onClickListener; public MyAdapter(MyClickListener onClickListener) { this.onClickListener = onClickListener; }... }

3. In your method:

    holder.itemView.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { onClickListener.onItemClick(myModel); } });

4. In your activity:

    MyAdapter adapter = new MyAdapter(new MyClickListener() { public void onItemClick(MyModel model) { /// here you can call startActivityForResult } });