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How to use string[] in which I added data from my database in Alert Dialog.Builder?

You are creating a String array of size 100, which is most probably not the exact number of elements in the Cursor object. Therefore, some of this elements will probably be null and hence cause the NullPointerException

You should probably initialize it like this:

Cursor c = db.getAll();
String item[] = new String[c.getCount()];

Categories : Android

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