芷月_wyy 2020-05-23 19:19 采纳率: 0%
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Unable to create service？？

ple.zhinengjiaju3 uid is 10302
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.zhinengjiaju3, PID: 15977
java.lang.RuntimeException: Unable to create service com.example.zhinengjiaju3.MyMqttService: java.lang.NullPointerException: Attempt to read from field 'int android.content.pm.ApplicationInfo.targetSdkVersion' on a null object reference
at android.app.ActivityThread.handleCreateService(ActivityThread.java:4535)
at android.app.ActivityThread.access$2600(ActivityThread.java:296)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2243)
at android.os.Handler.dispatchMessage(Handler.java:107)
at android.os.Looper.loop(Looper.java:213)
at android.app.ActivityThread.main(ActivityThread.java:8178)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:513)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1101)
Caused by: java.lang.NullPointerException: Attempt to read from field 'int android.content.pm.ApplicationInfo.targetSdkVersion' on a null object reference
at android.app.Service.attach(Service.java:842)
at android.app.ActivityThread.handleCreateService(ActivityThread.java:4519)
at android.app.ActivityThread.access$2600(ActivityThread.java:296) 
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2243) 
at android.os.Handler.dispatchMessage(Handler.java:107) 
at android.os.Looper.loop(Looper.java:213) 
at android.app.ActivityThread.main(ActivityThread.java:8178) 
at java.lang.reflect.Method.invoke(Native Method) 
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:513) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1101) 
I/Process: Sending signal. PID: 15977 SIG: 9
Process 15977 terminated.

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  • 蔡能教授，网站特聘专家 2020-09-19 16:34
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    https://blog.csdn.net/weixin_41699562/article/details/100864172

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