android oreo/pie-paho mqtt无法在后台启动活动

我试图解决运行在android pie（9.0）上的paho mqtt

我正在服务类中运行mqtt连接（返回START\u STICKY）并使用bind连接到UI。。。一切都很好，但不起作用的是 当应用程序被终止时，服务和mqtt连接停止。Mqtt

AlarmPingSender

停止工作。。尝试在牛轧糖（7.0）上测试，效果非常好

有没有一个解决方案可以让mqtt paho库在新版本的Android上工作

LOGCAT:

2019-03-22 02:35:08.854 12651-12651/com.example.dominik.smarthome2 E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.dominik.smarthome2, PID: 12651
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.dominik.smarthome2/com.example.dominik.smarthome2.MainActivity}: java.lang.IllegalStateException: Not allowed to start service Intent { cmp=com.example.dominik.smarthome2/.MyService }: app is in background uid UidRecord{ee07604 u0a297 TPSL idle procs:1 proclist:12651, seq(0,0,0)}
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3108)
    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3251)
    at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78)
    at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
    at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1948)
    at android.os.Handler.dispatchMessage(Handler.java:106)
    at android.os.Looper.loop(Looper.java:214)
    at android.app.ActivityThread.main(ActivityThread.java:7045)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:964)
 Caused by: java.lang.IllegalStateException: Not allowed to start service Intent { cmp=com.example.dominik.smarthome2/.MyService }: app is in background uid UidRecord{ee07604 u0a297 TPSL idle procs:1 proclist:12651, seq(0,0,0)}
    at android.app.ContextImpl.startServiceCommon(ContextImpl.java:1666)
    at android.app.ContextImpl.startService(ContextImpl.java:1611)
    at android.content.ContextWrapper.startService(ContextWrapper.java:677)
    at com.example.dominik.smarthome2.MainActivity.onCreate(MainActivity.java:122)
    at android.app.Activity.performCreate(Activity.java:7327)
    at android.app.Activity.performCreate(Activity.java:7318)
    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1271)
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3088)
    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3251) 
    at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78) 
    at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108) 
    at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68) 
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1948) 
    at android.os.Handler.dispatchMessage(Handler.java:106) 
    at android.os.Looper.loop(Looper.java:214) 
    at android.app.ActivityThread.main(ActivityThread.java:7045) 
    at java.lang.reflect.Method.invoke(Native Method) 
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493) 
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:964)   

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Android 8.0已经引入，因此您应该使用

startForegroundService（）

而不是

startService（）

来运行具有可见通知的前台服务：

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我试图在没有服务的情况下运行mqtt连接，但Paho库返回相同的错误。这意味着Paho alose使用服务而不是foregroundService？Paho MQTT客户端不是Android服务。