Nullpointer Exception In Listview,creating Separate Layout For Listitems?

I created a listview that contains two types of items either text or image.But i am getting nullpointer exception only on when i scrolling down. my adapter's code is this. public

Solution 1:

It is a classic ArrayIndexOutOfBoundsException. Don't forget that arrays in java (like in most programming language) are 0-indexed, meanign the first element is at index 0 (not 1).

You haven't shown any caller code, but most likely some of your code are calling methods getItem() or getView() with a position which value is 2 where it should be 1 (to access to second element in the list).

If you cannot control the caller (maybe it is from an third-party library), then I suggest that:

• offset the value of position by -1. But this might break some other part of your code.
• add some protection in your code to prevent exception, such as:

public ListModel getItem(int position) {
    if (position >= myList.size()) {
        // TODO: log an error, show a message, etc.returnnull; // or a default value
    }
    return myList.get(position);
}

It is also possible that the values you chose for TYPE_ITEM1 and TYPE_ITEM2 are not well if they must represent indices in arrays. Consider using 0 and 1 instead.

Solution 2:

It's probably your getItemViewType. You should return a zero-based index (i.e. 0 or 1 not 1 or 0). From the docs:

Note: Integers must be in the range 0 to getViewTypeCount() - 1