"Runners"의 배열을 ArrayList의 정보로 채우려고하는데 null 포인터 예외가 발생합니다. 저는 arraylist와 Runners의 배열 크기를 모두 인쇄했습니다.안드로이드 응용 프로그램의 java.lang.NullPointerException.
이라면 .. 닥터 버크는 당신이
04-15 09:09:45.009: E/AndroidRuntime(28225): FATAL EXCEPTION: main
04-15 09:09:45.009: E/AndroidRuntime(28225): Process: com.example.runtracker, PID: 28225
04-15 09:09:45.009: E/AndroidRuntime(28225): java.lang.IllegalStateException: Could not execute method of the activity
04-15 09:09:45.009: E/AndroidRuntime(28225): at android.view.View$1.onClick(View.java:3865)
04-15 09:09:45.009: E/AndroidRuntime(28225): at android.view.View.performClick(View.java:4480)
04-15 09:09:45.009: E/AndroidRuntime(28225): at android.view.View$PerformClick.run(View.java:18673)
04-15 09:09:45.009: E/AndroidRuntime(28225): at android.os.Handler.handleCallback(Handler.java:733)
04-15 09:09:45.009: E/AndroidRuntime(28225): at android.os.Handler.dispatchMessage(Handler.java:95)
04-15 09:09:45.009: E/AndroidRuntime(28225): at android.os.Looper.loop(Looper.java:157)
04-15 09:09:45.009: E/AndroidRuntime(28225): at android.app.ActivityThread.main(ActivityThread.java:5872)
04-15 09:09:45.009: E/AndroidRuntime(28225): at java.lang.reflect.Method.invokeNative(Native Method)
04-15 09:09:45.009: E/AndroidRuntime(28225): at java.lang.reflect.Method.invoke(Method.java:515)
04-15 09:09:45.009: E/AndroidRuntime(28225): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1069)
04-15 09:09:45.009: E/AndroidRuntime(28225): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:885)
04-15 09:09:45.009: E/AndroidRuntime(28225): at dalvik.system.NativeStart.main(Native Method)
04-15 09:09:45.009: E/AndroidRuntime(28225): Caused by: java.lang.reflect.InvocationTargetException
04-15 09:09:45.009: E/AndroidRuntime(28225): at java.lang.reflect.Method.invokeNative(Native Method)
04-15 09:09:45.009: E/AndroidRuntime(28225): at java.lang.reflect.Method.invoke(Method.java:515)
04-15 09:09:45.009: E/AndroidRuntime(28225): at android.view.View$1.onClick(View.java:3860)
04-15 09:09:45.009: E/AndroidRuntime(28225): ... 11 more
04-15 09:09:45.009: E/AndroidRuntime(28225): Caused by: java.lang.NullPointerException
04-15 09:09:45.009: E/AndroidRuntime(28225): at com.example.runtracker.MainActivity.onClickFinish(MainActivity.java:99)
04-15 09:09:45.009: E/AndroidRuntime(28225): ... 14 more
이 줄에는 무엇이 있습니까? MainActivity.java:99 – Eugene
이것이 전부 필요한 코드라면,'runnerName' EditText를 초기화하지 않았습니다. –
배열'r'의 초기화 후에 모든 요소는'null'입니다. 'null' 인 객체의 메소드를 호출하려고하면 예외가 발생합니다. – fabian