有没有前辈在开发android程序的时候出现这样的错误????

    技术2022-05-20  30

    03-02 09:43:02.931: WARN/dalvikvm(308): threadid=1: thread exiting with uncaught exception (group=0x4001d800)

    03-02 09:43:02.982: ERROR/AndroidRuntime(308): FATAL EXCEPTION: main

    03-02 09:43:02.982: ERROR/AndroidRuntime(308): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.lfk.MyObserveMode/com.lfk.MyObserveMode.MyObserveMode}: java.lang.NullPointerException

    03-02 09:43:02.982: ERROR/AndroidRuntime(308):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2585)

    03-02 09:43:02.982: ERROR/AndroidRuntime(308):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)

    03-02 09:43:02.982: ERROR/AndroidRuntime(308):     at android.app.ActivityThread.access$2300(ActivityThread.java:125)

    03-02 09:43:02.982: ERROR/AndroidRuntime(308):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)

    03-02 09:43:02.982: ERROR/AndroidRuntime(308):     at android.os.Handler.dispatchMessage(Handler.java:99)

    03-02 09:43:02.982: ERROR/AndroidRuntime(308):     at android.os.Looper.loop(Looper.java:123)

    03-02 09:43:02.982: ERROR/AndroidRuntime(308):     at android.app.ActivityThread.main(ActivityThread.java:4627)

    03-02 09:43:02.982: ERROR/AndroidRuntime(308):     at java.lang.reflect.Method.invokeNative(Native Method)

    03-02 09:43:02.982: ERROR/AndroidRuntime(308):     at java.lang.reflect.Method.invoke(Method.java:521)

    03-02 09:43:02.982: ERROR/AndroidRuntime(308):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)

    03-02 09:43:02.982: ERROR/AndroidRuntime(308):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)

    03-02 09:43:02.982: ERROR/AndroidRuntime(308):     at dalvik.system.NativeStart.main(Native Method)

    03-02 09:43:02.982: ERROR/AndroidRuntime(308): Caused by: java.lang.NullPointerException

    03-02 09:43:02.982: ERROR/AndroidRuntime(308):     at android.app.Activity.findViewById(Activity.java:1637)

    03-02 09:43:02.982: ERROR/AndroidRuntime(308):     at com.lfk.MyObserveMode.MyObserveMode.<init>(MyObserveMode.java:11)

    03-02 09:43:02.982: ERROR/AndroidRuntime(308):     at java.lang.Class.newInstanceImpl(Native Method)

    03-02 09:43:02.982: ERROR/AndroidRuntime(308):     at java.lang.Class.newInstance(Class.java:1429)

    03-02 09:43:02.982: ERROR/AndroidRuntime(308):     at android.app.Instrumentation.newActivity(Instrumentation.java:1021)

    03-02 09:43:02.982: ERROR/AndroidRuntime(308):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2577)

    03-02 09:43:02.982: ERROR/AndroidRuntime(308):     ... 11 more


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