ListView: setItemChecked only works with standard ArrayAdapter - does NOT work when using customized ArrayAdapter?

Question

This is really weird.

When I use the standard ArrayAdapter for a ListView calling setItemChecked works OK

But when using a custom made ArrayAdapter it does n

Answer 1

For sure you have to set the choice mode for your ListView, for example:

list.setChoiceMode(ListView.CHOICE_MODE_SINGLE);

But if you're also using a custom layout for your list item (R.layout.drawing_list_item), then you have to make sure your layout implements the Checkable interface:

public class CheckableRelativeLayout extends RelativeLayout implements Checkable {
    private boolean isChecked = false;

    public CheckableRelativeLayout(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public boolean isChecked() {
        return isChecked;
    }

    public void setChecked(boolean isChecked) {
        this.isChecked = isChecked;
        changeColor(isChecked);
    }

    public void toggle() {
        this.isChecked = !this.isChecked;
        changeColor(this.isChecked);
    }

    private void changeColor(boolean isChecked){
        if (isChecked) {
            setBackgroundColor(getResources().getColor(android.R.color.holo_blue_light));
        } else {
            setBackgroundColor(getResources().getColor(android.R.color.transparent));
        }
    }
}

Then your checkable layout will be defined as the following example: