使用删除时出现空指针异常

Question

 AdapterContextMenuInfo info = (AdapterContextMenuInfo) item.getMenuInfo();

                dDbHelper.deletedJournal(info.id);
                mDbHelper.deleteJournal(info.id);


public boolean deletedJournal(long homeId){

        return mDb.delete(DATABASE_TABLE, KEY_HOMEID + "=" + homeId, null )>0;
    }

dDbHelper.deletedJournal(info.id)给了我一个空指针异常

Answer 1

我打赌信息为空。这可能会有所帮助：

Why is MenuItem.AdapterContextMenuInfo null when my list view has a custom adapter?

Answer 2

dDbHelper或info为null。