이 에러좀 봐주세요 ㅠㅠ

Question

07-29 23:20:53.880: E/AndroidRuntime(30988): FATAL EXCEPTION: AsyncTask #1

07-29 23:20:53.880: E/AndroidRuntime(30988): java.lang.RuntimeException: An error occured while executing doInBackground()

07-29 23:20:53.880: E/AndroidRuntime(30988): at android.os.AsyncTask$3.done(AsyncTask.java:278)

07-29 23:20:53.880: E/AndroidRuntime(30988): at java.util.concurrent.FutureTask$Sync.innerSetException(FutureTask.java:273)

07-29 23:20:53.880: E/AndroidRuntime(30988): at java.util.concurrent.FutureTask.setException(FutureTask.java:124)

07-29 23:20:53.880: E/AndroidRuntime(30988): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:307)

07-29 23:20:53.880: E/AndroidRuntime(30988): at java.util.concurrent.FutureTask.run(FutureTask.java:137)

07-29 23:20:53.880: E/AndroidRuntime(30988): at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:208)

07-29 23:20:53.880: E/AndroidRuntime(30988): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)

07-29 23:20:53.880: E/AndroidRuntime(30988): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)

07-29 23:20:53.880: E/AndroidRuntime(30988): at java.lang.Thread.run(Thread.java:856)

07-29 23:20:53.880: E/AndroidRuntime(30988): Caused by: java.lang.NullPointerException

07-29 23:20:53.880: E/AndroidRuntime(30988): at com.example.jsonsampleapp.ReadData2.doInBackground(ReadData2.java:48)

07-29 23:20:53.880: E/AndroidRuntime(30988): at com.example.jsonsampleapp.ReadData2.doInBackground(ReadData2.java:1)

07-29 23:20:53.880: E/AndroidRuntime(30988): at android.os.AsyncTask$2.call(AsyncTask.java:264)

07-29 23:20:53.880: E/AndroidRuntime(30988): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)

07-29 23:20:53.880: E/AndroidRuntime(30988): ... 5 more

 

Answer 1

async Task 랑 백그라운드 사이에 스레드쪽 문제가 있는듯해요

Answer 2

48번째줄 널포인트 에러네요