Start the device without a network, then connect to the network, it will crash

[laishichang]

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• Bug exists Release Version 1.1.1 (Java Repository Master Branch)

Console Log output (if available):

2022-08-22 15:47:01.835 473-594/system_process D/ConnectivityService: sendStickyBroadcast: action=android.net.conn.INET_CONDITION_ACTION
2022-08-22 15:47:01.839 1560-1560/? I/MqttConnection: Requesting Automatic reconnect using New Java AC
2022-08-22 15:47:01.840 1560-1560/? D/AndroidRuntime: Shutting down VM
2022-08-22 15:47:01.841 1560-1560/? E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.iplaysky.egg, PID: 1560
    java.lang.RuntimeException: Error receiving broadcast Intent { act=android.net.conn.CONNECTIVITY_CHANGE flg=0x4000010 (has extras) } in org.eclipse.paho.android.service.MqttService$NetworkConnectionIntentReceiver@fc2547
        at android.app.LoadedApk$ReceiverDispatcher$Args.run(LoadedApk.java:1132)
        at android.os.Handler.handleCallback(Handler.java:755)
        at android.os.Handler.dispatchMessage(Handler.java:95)
        at android.os.Looper.loop(Looper.java:154)
        at android.app.ActivityThread.main(ActivityThread.java:6141)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:913)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:803)
     Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void java.util.Timer.cancel()' on a null object reference
        at org.eclipse.paho.client.mqttv3.MqttAsyncClient.stopReconnectCycle(MqttAsyncClient.java:1120)
        at org.eclipse.paho.client.mqttv3.MqttAsyncClient.reconnect(MqttAsyncClient.java:1057)
        at org.eclipse.paho.android.service.MqttConnection.reconnect(MqttConnection.java:1049)
        at org.eclipse.paho.android.service.MqttService.reconnect(MqttService.java:342)
        at org.eclipse.paho.android.service.MqttService$NetworkConnectionIntentReceiver.onReceive(MqttService.java:827)
        at android.app.LoadedApk$ReceiverDispatcher$Args.run(LoadedApk.java:1122)
        at android.os.Handler.handleCallback(Handler.java:755) 
        at android.os.Handler.dispatchMessage(Handler.java:95) 
        at android.os.Looper.loop(Looper.java:154) 
        at android.app.ActivityThread.main(ActivityThread.java:6141) 
        at java.lang.reflect.Method.invoke(Native Method) 
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:913) 
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:803) 
2022-08-22 15:47:01.847 473-984/system_process W/ActivityManager:   Force finishing activity com.iplaysky.egg/.MainActivity
2022-08-22 15:47:01.848 473-984/system_process I/ActivityManager: Clearing package preferred activities from com.iplaysky.egg