Database can't retrieve image or empty, cause Array error . how to fix it?

Question

My problem is java.lang.IndexOutOfBoundsException: Invalid index 0, size is 0. I don\'t know to fix this error and i not found any problem on my array. I\'m new

Answer 1

The problem is this two lines of code:

        quesList=db.getAllQuestions();
        currentQ=quesList.get(qid);

The first line actually just returns an empty array, and hence the second line throws unable to get item at position 0.

I think it is better to check the length of quesList before accessing it in this case:

if(quesList.size()>0){
  currentQ=quesList.get(qid);
}else{
  //maybe put some default question or show no question found message
}