多线程空指针异常 Exception in thread "AsyncTask2" Exception in thread "AsyncTask1" java.lang.NullPointerExce

写了一个多线程方法,调用一个单线程不报错的方法,一直在抛Exception in thread "AsyncTask2" Exception in thread "AsyncTask1" java.lang.NullPointerException多线程空指针异常 Exception in thread "AsyncTask2" Exception in thread "AsyncTask1" java.lang.NullPointerExce

 

后来在调用外面套了try catch解决