getextra()는 putextra() 다음의 에러를

Question

10-02 14:51:23.938: E/AndroidRuntime(1524): FATAL EXCEPTION: main 
10-02 14:51:23.938: E/AndroidRuntime(1524): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.mani/com.example.mani.MapActivity}: java.lang.NullPointerException 
10-02 14:51:23.938: E/AndroidRuntime(1524):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180) 
10-02 14:51:23.938: E/AndroidRuntime(1524):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230) 
10-02 14:51:23.938: E/AndroidRuntime(1524):  at android.app.ActivityThread.access$600(ActivityThread.java:141) 
10-02 14:51:23.938: E/AndroidRuntime(1524):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234) 
10-02 14:51:23.938: E/AndroidRuntime(1524):  at android.os.Handler.dispatchMessage(Handler.java:99) 
10-02 14:51:23.938: E/AndroidRuntime(1524):  at android.os.Looper.loop(Looper.java:137) 
10-02 14:51:23.938: E/AndroidRuntime(1524):  at android.app.ActivityThread.main(ActivityThread.java:5041) 
10-02 14:51:23.938: E/AndroidRuntime(1524):  at java.lang.reflect.Method.invokeNative(Native Method) 
10-02 14:51:23.938: E/AndroidRuntime(1524):  at java.lang.reflect.Method.invoke(Method.java:511) 
10-02 14:51:23.938: E/AndroidRuntime(1524):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793) 
10-02 14:51:23.938: E/AndroidRuntime(1524):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560) 
10-02 14:51:23.938: E/AndroidRuntime(1524):  at dalvik.system.NativeStart.main(Native Method) 
10-02 14:51:23.938: E/AndroidRuntime(1524): Caused by: java.lang.NullPointerException 
10-02 14:51:23.938: E/AndroidRuntime(1524):  at com.example.mani.MapActivity.onCreate(MapActivity.java:25) 
10-02 14:51:23.938: E/AndroidRuntime(1524):  at android.app.Activity.performCreate(Activity.java:5104) 
10-02 14:51:23.938: E/AndroidRuntime(1524):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080) 
10-02 14:51:23.938: E/AndroidRuntime(1524):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144) 
10-02 14:51:23.938: E/AndroidRuntime(1524):  ... 11 more 
10-02 14:55:46.319: E/AndroidRuntime(1784): FATAL EXCEPTION: main 
10-02 14:55:46.319: E/AndroidRuntime(1784): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.mani/com.example.mani.MapActivity}: java.lang.NullPointerException 
10-02 14:55:46.319: E/AndroidRuntime(1784):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180) 
10-02 14:55:46.319: E/AndroidRuntime(1784):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230) 
10-02 14:55:46.319: E/AndroidRuntime(1784):  at android.app.ActivityThread.access$600(ActivityThread.java:141) 
10-02 14:55:46.319: E/AndroidRuntime(1784):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234) 
10-02 14:55:46.319: E/AndroidRuntime(1784):  at android.os.Handler.dispatchMessage(Handler.java:99) 
10-02 14:55:46.319: E/AndroidRuntime(1784):  at android.os.Looper.loop(Looper.java:137) 
10-02 14:55:46.319: E/AndroidRuntime(1784):  at android.app.ActivityThread.main(ActivityThread.java:5041) 
10-02 14:55:46.319: E/AndroidRuntime(1784):  at java.lang.reflect.Method.invokeNative(Native Method) 
10-02 14:55:46.319: E/AndroidRuntime(1784):  at java.lang.reflect.Method.invoke(Method.java:511) 
10-02 14:55:46.319: E/AndroidRuntime(1784):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793) 
10-02 14:55:46.319: E/AndroidRuntime(1784):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560) 
10-02 14:55:46.319: E/AndroidRuntime(1784):  at dalvik.system.NativeStart.main(Native Method) 
10-02 14:55:46.319: E/AndroidRuntime(1784): Caused by: java.lang.NullPointerException 
10-02 14:55:46.319: E/AndroidRuntime(1784):  at com.example.mani.MapActivity.onCreate(MapActivity.java:26) 
10-02 14:55:46.319: E/AndroidRuntime(1784):  at android.app.Activity.performCreate(Activity.java:5104) 
10-02 14:55:46.319: E/AndroidRuntime(1784):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080) 
10-02 14:55:46.319: E/AndroidRuntime(1784):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144) 
10-02 14:55:46.319: E/AndroidRuntime(1784):  ... 11 more 

Answer 1

getExtras() 방법을 갖는 것은 Intent 통해 통과 Bundle 함유 모든 엑스트라을 반환하지만, 데이터가 전달되지있을 경우 null를 반환한다. 아마도 이것은 당신의 문제의 뿌리입니까? 명확하게