Question

A user selects an answer from a series of options in a listview. After submitting (right or wrong) I intend to highlight the correct answer in the list view.

I thought I had it figured:

 // get the position from the array we fed into the list view that has the correct answer    
int correct = curquestion.GetIndexOfCorrectAnswer();
// set that item's background to yellow
lView.getChildAt(correct).setBackgroundColor(Color.YELLOW);

I’ve discovered though through watching this run, and reading other people’s posts herem that getChildAt doesn’t provide a reliable result- sometimes it appears to pick a random child to set yellow. Any suggestions on other approaches?

Answer 1

Enter position of list item at which you want to set color:

 adapter.setSelectedPosition(position);
 adapter.setNotifyOnChange(true);
 listView.invalidate();

and in adapter class:

// change the row color based on selected state

if(selectedPos == position){
    label.setBackgroundColor(Color.YELLOW);
 }else{
    label.setBackgroundColor(Color.TRANSPARENT);
 }

Hope this helps.