Android: getContext().getContentResolver() sometimes gets NullPointerException

Question

I want to ask why we get this annotation:

Method invocation getContext.getContentResolver() may produce NullPointerException

Why i

Answer 1

Whenever you try to use a member or a method of an object, you can have a runtime exception if the object, whose member/method you try to use is null. Let's suppose you want to use a member/method of an object, obj. If you use it like this:

if (obj != null) {
    //use members/methods of obj
}

then you prevented the problem. However, you might want to handle it as an exception, like this:

try {
    //use members/methods of obj
} catch (NullPointerException npe) {
    //handle the NullPointerException
}