아...또다시.. ㅠㅠ

Question

08-03 21:15:03.850: E/AndroidRuntime(5477): FATAL EXCEPTION: main
08-03 21:15:03.850: E/AndroidRuntime(5477): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.jsonsampleapp/com.example.jsonsampleapp.MainActivity}: java.lang.NullPointerException
08-03 21:15:03.850: E/AndroidRuntime(5477): 	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1968)
08-03 21:15:03.850: E/AndroidRuntime(5477): 	at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1993)
08-03 21:15:03.850: E/AndroidRuntime(5477): 	at android.app.ActivityThread.access$600(ActivityThread.java:127)
08-03 21:15:03.850: E/AndroidRuntime(5477): 	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1159)
08-03 21:15:03.850: E/AndroidRuntime(5477): 	at android.os.Handler.dispatchMessage(Handler.java:99)
08-03 21:15:03.850: E/AndroidRuntime(5477): 	at android.os.Looper.loop(Looper.java:137)
08-03 21:15:03.850: E/AndroidRuntime(5477): 	at android.app.ActivityThread.main(ActivityThread.java:4512)
08-03 21:15:03.850: E/AndroidRuntime(5477): 	at java.lang.reflect.Method.invokeNative(Native Method)
08-03 21:15:03.850: E/AndroidRuntime(5477): 	at java.lang.reflect.Method.invoke(Method.java:511)
08-03 21:15:03.850: E/AndroidRuntime(5477): 	at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:794)
08-03 21:15:03.850: E/AndroidRuntime(5477): 	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:561)
08-03 21:15:03.850: E/AndroidRuntime(5477): 	at dalvik.system.NativeStart.main(Native Method)
08-03 21:15:03.850: E/AndroidRuntime(5477): Caused by: java.lang.NullPointerException
08-03 21:15:03.850: E/AndroidRuntime(5477): 	at com.example.jsonsampleapp.MainActivity.onCreate(MainActivity.java:127)
08-03 21:15:03.850: E/AndroidRuntime(5477): 	at android.app.Activity.performCreate(Activity.java:4492)
08-03 21:15:03.850: E/AndroidRuntime(5477): 	at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1052)
08-03 21:15:03.850: E/AndroidRuntime(5477): 	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1932)
08-03 21:15:03.850: E/AndroidRuntime(5477): 	... 11 more

 

Answer 1

08-03 21:15:03.850: E/AndroidRuntime(5477): Caused by: java.lang.NullPointerException

08-03 21:15:03.850: E/AndroidRuntime(5477):     at com.example.jsonsampleapp.MainActivity.onCreate(MainActivity.java:127)

 

MainActivity.java 127라인에서 null인 부분이 있어 NullPointerException이 발생했습니다. null이 안되게 변경하세요