NullPointerException

 

  java.lang.NullPointerException: Attempt to invoke virtual method 'int android.view.View.getImportantForAccessibility()' on a null object reference

 

  出现以上异常.然后就在baidu上搜，结果终于找到一个靠谱点的了.参见:

http://stackoverflow.com/questions/28601476/java-lang-nullpointerexception-attempt-to-invoke-virtual-method-int-android-vi

 

   虽然是英语的，看看就差不多了，知道什么意思了.

   I'm trying to put together a shopping list app , based on input fields , ArrayList, and ListView. The app will be based on Fragments. However, I have encountered a problem and I do not know how to solve it

  I looked around on both Google and StackOverflow have found some information . However , I have not got it to work. Now hope that I can get help with my code .

I'm relatively inexperienced in Android development .

Thanks in advance

 

  之后给出了错误:

  In your public View getView method change return null to convertView;

 

  然后，我就解决了，突然觉得我是不是要在学学英语了.