用真机运行时，出现“很抱歉，已停止运行”求解怎么破？？？？？？？

[qq_20156659]

06-28 20:30:42.193 15483-15483/exampleintent.com.myfinaltest E/AndroidRuntime: FATAL EXCEPTION: main
06-28 20:30:42.193 15483-15483/exampleintent.com.myfinaltest E/AndroidRuntime: java.lang.RuntimeException: Unable to start activity ComponentInfo{exampleintent.com.myfinaltest/exampleintent.com.myfinaltest.MainActivity}: java.lang.NullPointerException
06-28 20:30:42.193 15483-15483/exampleintent.com.myfinaltest E/AndroidRuntime: at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2364)
06-28 20:30:42.193 15483-15483/exampleintent.com.myfinaltest E/AndroidRuntime: at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2416)
06-28 20:30:42.193 15483-15483/exampleintent.com.myfinaltest E/AndroidRuntime: at android.app.ActivityThread.access$600(ActivityThread.java:175)
06-28 20:30:42.193 15483-15483/exampleintent.com.myfinaltest E/AndroidRuntime: at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1386)
06-28 20:30:42.193 15483-15483/exampleintent.com.myfinaltest E/AndroidRuntime: at android.os.Handler.dispatchMessage(Handler.java:107)
06-28 20:30:42.193 15483-15483/exampleintent.com.myfinaltest E/AndroidRuntime: at android.os.Looper.loop(Looper.java:194)
06-28 20:30:42.193 15483-15483/exampleintent.com.myfinaltest E/AndroidRuntime: at android.app.ActivityThread.main(ActivityThread.java:5434)
06-28 20:30:42.193 15483-15483/exampleintent.com.myfinaltest E/AndroidRuntime: at java.lang.reflect.Method.invokeNative(Native Method)
06-28 20:30:42.193 15483-15483/exampleintent.com.myfinaltest E/AndroidRuntime: at java.lang.reflect.Method.invoke(Method.java:525)
06-28 20:30:42.193 15483-15483/exampleintent.com.myfinaltest E/AndroidRuntime: at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:838)
06-28 20:30:42.193 15483-15483/exampleintent.com.myfinaltest E/AndroidRuntime: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:605)
06-28 20:30:42.193 15483-15483/exampleintent.com.myfinaltest E/AndroidRuntime: at dalvik.system.NativeStart.main(Native Method)
06-28 20:30:42.193 15483-15483/exampleintent.com.myfinaltest E/AndroidRuntime: Caused by: java.lang.NullPointerException
06-28 20:30:42.193 15483-15483/exampleintent.com.myfinaltest E/AndroidRuntime: at exampleintent.com.myfinaltest.MainActivity.onCreate(MainActivity.java:34)
06-28 20:30:42.193 15483-15483/exampleintent.com.myfinaltest E/AndroidRuntime: at android.app.Activity.performCreate(Activity.java:5273)
06-28 20:30:42.193 15483-15483/exampleintent.com.myfinaltest E/AndroidRuntime: at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1153)
06-28 20:30:42.193 15483-15483/exampleintent.com.myfinaltest E/AndroidRuntime: at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2328)
06-28 20:30:42.193 15483-15483/exampleintent.com.myfinaltest E/AndroidRuntime: at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2416) 
06-28 20:30:42.193 15483-15483/exampleintent.com.myfinaltest E/AndroidRuntime: at android.app.ActivityThread.access$600(ActivityThread.java:175) 
06-28 20:30:42.193 15483-15483/exampleintent.com.myfinaltest E/AndroidRuntime: at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1386) 
06-28 20:30:42.193 15483-15483/exampleintent.com.myfinaltest E/AndroidRuntime: at android.os.Handler.dispatchMessage(Handler.java:107) 
06-28 20:30:42.193 15483-15483/exampleintent.com.myfinaltest E/AndroidRuntime: at android.os.Looper.loop(Looper.java:194) 
06-28 20:30:42.193 15483-15483/exampleintent.com.myfinaltest E/AndroidRuntime: at android.app.ActivityThread.main(ActivityThread.java:5434) 
06-28 20:30:42.193 15483-15483/exampleintent.com.myfinaltest E/AndroidRuntime: at java.lang.reflect.Method.invokeNative(Native Method) 
06-28 20:30:42.193 15483-15483/exampleintent.com.myfinaltest E/AndroidRuntime: at java.lang.reflect.Method.invoke(Method.java:525) 
06-28 20:30:42.193 15483-15483/exampleintent.com.myfinaltest E/AndroidRuntime: at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:838) 
06-28 20:30:42.193 15483-15483/exampleintent.com.myfinaltest E/AndroidRuntime: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:605) 
06-28 20:30:42.193 15483-15483/exampleintent.com.myfinaltest E/AndroidRuntime: at dalvik.system.NativeStart.main(Native Method) 



这是LOGCAT 来大神帮我看下。

[Poopaye]

什么时候android也和.net搭边了

[Poopaye]

引用

MainActivity.java:34

这么明显

[qq_20156659]

引用 2 楼 shingoscar 的回复:

引用

MainActivity.java:34

这么明显

什么意思？？？

[Poopaye]

引用 3 楼 qq_20156659 的回复:

[quote=引用 2 楼 shingoscar 的回复:]

引用

MainActivity.java:34

这么明显

什么意思？？？[/quote] 这你都不理解吗？？？ 我只好建议，先以java、堆栈、调试等关键词搜索并学习下