Question

I have an Android app with a ListView, and each row in the list has a TextView and a Button. What I want to do is add an OnClickListener to each Button in the ListView, but I can’t figure out how to get some sort of reference to every Button… Can anyone please give me a hint?

Here’s my XML that’s bound to the ListAdapter:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content">
<TextView 
    android:id="@+id/row_text"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentLeft="true"
    android:textSize="18sp">
</TextView>
<Button
    android:id="@+id/row_button"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentRight="true" />
</RelativeLayout>

And I tried something like this, but it doesn’t work:

SimpleCursorAdapter rows = new SimpleCursorAdapter(this, R.layout.row_layout, cursor, from, to);
setListAdapter(rows);
Button button = (Button) getListAdapter().getView(0, null, getListAdapter()).findViewById(R.id.row_button);
button.setOnClickListener(new View.OnClickListener() {
    @Override public void onClick(View v) {
        Log.i(TAG, "clicked");
    }
}); 

Answer 1

It’s not possible using SimpleCursorAdapter… you will have to create your own adapter. If you don’t want to write a custom Adapter, at least try to enhance the SimpleCursorAdapter with new capabilities. For instance:

public class YourAdapter extends SimpleCursorAdapter{

    public YourAdapter(Context context, int layout, Cursor c, String[] from, int[] to) {
        super(context, layout, c, from, to);
    }

    public View getView(int position, View convertView, ViewGroup parent){
        View view = super.getView(position, convertView, parent);
        Button button = (Button)view.findViewById(R.id.row_button);
        button.setOnClickListener(new View.OnClickListener() {
            @Override public void onClick(View v) {
                Log.i(TAG, "clicked");
            }
        }); 
        return view;
    }
}

Then, you can do:

SimpleCursorAdapter rows = new YourAdapter(this, R.layout.row_layout, cursor, from, to);
setListAdapter(rows);