Android Question How to Stop Starter Service from error

YIM bunchhat

Active Member
Licensed User
Hello, I have one problem. I use Starter Service for looking my Bluetooth connection while it disconnect. it work ok.
but problem is when I close app it got error below:

B4X:
The Starter service should never be started from a receiver.
*** Service (starter) Create ***
** Service (starter) Start **
starter_service_start (java line: 163)
java.lang.IllegalStateException: Interval must be larger than 0.
    at anywheresoftware.b4a.objects.Timer.setEnabled(Timer.java:79)
    at b4a.gsmmodem.starter._service_start(starter.java:163)
    at java.lang.reflect.Method.invoke(Native Method)
    at anywheresoftware.b4a.BA.raiseEvent2(BA.java:186)
    at anywheresoftware.b4a.BA.raiseEvent(BA.java:166)
    at b4a.gsmmodem.starter.handleStart(starter.java:100)
    at b4a.gsmmodem.starter.access$000(starter.java:8)
    at b4a.gsmmodem.starter$1.run(starter.java:71)
    at anywheresoftware.b4a.objects.ServiceHelper$StarterHelper.onStartCommand(ServiceHelper.java:221)
    at b4a.gsmmodem.starter.onStartCommand(starter.java:69)
    at android.app.ActivityThread.handleServiceArgs(ActivityThread.java:3609)
    at android.app.ActivityThread.-wrap20(Unknown Source:0)
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1717)
    at android.os.Handler.dispatchMessage(Handler.java:105)
    at android.os.Looper.loop(Looper.java:164)
    at android.app.ActivityThread.main(ActivityThread.java:6710)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:770)
java.lang.RuntimeException: Unable to start service b4a.gsmmodem.starter@608448a with Intent { cmp=b4a.gsmmodem/.starter (has extras) }: java.lang.RuntimeException: java.lang.IllegalStateException: Interval must be larger than 0.
    at android.app.ActivityThread.handleServiceArgs(ActivityThread.java:3626)
    at android.app.ActivityThread.-wrap20(Unknown Source:0)
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1717)
    at android.os.Handler.dispatchMessage(Handler.java:105)
    at android.os.Looper.loop(Looper.java:164)
    at android.app.ActivityThread.main(ActivityThread.java:6710)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:770)
Caused by: java.lang.RuntimeException: java.lang.IllegalStateException: Interval must be larger than 0.
    at anywheresoftware.b4a.BA.raiseEvent2(BA.java:223)
    at anywheresoftware.b4a.BA.raiseEvent(BA.java:166)
    at b4a.gsmmodem.starter.handleStart(starter.java:100)
    at b4a.gsmmodem.starter.access$000(starter.java:8)
    at b4a.gsmmodem.starter$1.run(starter.java:71)
    at anywheresoftware.b4a.objects.ServiceHelper$StarterHelper.onStartCommand(ServiceHelper.java:221)
    at b4a.gsmmodem.starter.onStartCommand(starter.java:69)
    at android.app.ActivityThread.handleServiceArgs(ActivityThread.java:3609)
 

MarkusR

Well-Known Member
Licensed User
Interval must be larger than 0.
sounds like u use a timer, you forgot to set the Interval value?
what is in line "starter_service_start (java line: 163)" ?
 

YIM bunchhat

Active Member
Licensed User
Hello MarkusR here is my code:
B4X:
#Region  Project Attributes
    #ApplicationLabel: GSM Modem Solar
    #VersionCode: 1
    #VersionName:
    'SupportedOrientations possible values: unspecified, landscape or portrait.
    #SupportedOrientations: portrait
    #CanInstallToExternalStorage: False
    #BridgeLogger: True
#End Region

#Region  Activity Attributes
    #FullScreen: False
    #IncludeTitle: False
#End Region

Sub Process_Globals
    'These global variables will be declared once when the application starts.
    'These variables can be accessed from all modules.
    Private bt As Serial
    Private ast As AsyncStreams
    Public timer As Timer
End Sub

Sub Globals
    'These global variables will be redeclared each time the activity is created.
    'These variables can only be accessed from this module.

    Private btnback As Button
    Private lbldis As Label
    Private imgblue As ImageView
    Private imgclock As ImageView
    Private imgsetting As ImageView
    Private imgsolar As ImageView
    Private imgwire As ImageView
    Private Label2 As Label
    Private Label3 As Label
    Private Label4 As Label
    Private Label5 As Label
    Private pairestr As String
    
End Sub

Sub Activity_Create(FirstTime As Boolean)
    'Do not forget to load the layout file created with the visual designer. For example:
    Activity.LoadLayout("solar")
    bt.Initialize("bt")
    StopService(Starter)
    timer.Initialize("timer",5000)
End Sub

Sub Activity_Resume

End Sub

Sub Activity_Pause (UserClosed As Boolean)
    If UserClosed Then
        bt.Disconnect
        timer.Enabled = False
        StopService(Starter)
    End If
End Sub

Sub timer_Tick
    timer.Enabled = False
    If Starter.connected = False Then
        ProgressDialogShow2("Reconnecting to Bluetooth....",False)
        Do While Starter.connected = False
            bt.Connect(pairestr)
            Sleep(2000)
        Loop
    End If
End Sub

Sub bt_Connected (Success As Boolean)
    If Success Then
        ast.Initialize(bt.InputStream,bt.OutputStream,"ast")
        StartService(Starter)
        ProgressDialogHide
    End If
End Sub

Sub visiblview(stat As Boolean)
    If stat = True Then
        imgblue.Visible = False
        imgclock.Visible = False
        imgsetting.Visible = False
        imgsolar.Visible = False
        imgwire.Visible = False
        Label2.Visible = False
        Label3.Visible = False
        Label4.Visible = False
        Label5.Visible = False
        lbldis.Visible = True
        btnback.Visible = True
    Else
        imgblue.Visible = True
        imgclock.Visible = True
        imgsetting.Visible = True
        imgsolar.Visible = True
        imgwire.Visible = True
        Label2.Visible = True
        Label3.Visible = True
        Label4.Visible = True
        Label5.Visible = True
        lbldis.Visible = False
        btnback.Visible = False
    End If
End Sub

Sub btnback_Click
    visiblview(False)
End Sub

Sub imgsolar_Click
    visiblview(True)
End Sub

Sub imgsetting_Click
    
End Sub

Sub imgclock_Click
    
End Sub

Sub imgblue_Click
    Dim PairedDevices As Map
    PairedDevices = bt.GetPairedDevices
    Dim l As List
    l.Initialize
    For i = 0 To PairedDevices.Size - 1
        l.Add(PairedDevices.GetKeyAt(i))
    Next
    Dim res As Int
    res = InputList(l, "Choose device", -1) 'show list with paired devices
    If res <> DialogResponse.CANCEL Then
        bt.Connect(PairedDevices.Get(l.Get(res))) 'convert the name to mac address
        pairestr = PairedDevices.Get(l.Get(res))
    End If
End Sub
And here is Service Starter
B4X:
#Region  Service Attributes
    #StartAtBoot: False
    #ExcludeFromLibrary: True
#End Region

Sub Process_Globals
    'These global variables will be declared once when the application starts.
    'These variables can be accessed from all modules.
    Public connected As Boolean
End Sub

Sub Service_Create
    'This is the program entry point.
    'This is a good place to load resources that are not specific to a single activity.

End Sub

Sub Service_Start (StartingIntent As Intent)
    If StartingIntent.Action = "android.bluetooth.device.action.ACL_CONNECTED" Then
        ToastMessageShow("Connected to device",True)
        connected = True
        Main.timer.Enabled = False
    Else If StartingIntent.Action = "android.bluetooth.device.action.ACL_DISCONNECTED" Then
        connected = False
        Main.timer.Enabled = True
    End If

End Sub

Sub Service_TaskRemoved
    'This event will be raised when the user removes the app from the recent apps list.
End Sub

'Return true to allow the OS default exceptions handler to handle the uncaught exception.
Sub Application_Error (Error As Exception, StackTrace As String) As Boolean
    Return True
End Sub

Sub Service_Destroy

End Sub
 

MarkusR

Well-Known Member
Licensed User
i would remove this StopService(Starter)/StartService(Starter)
let the timer enabled because u already check If connected = False Then reconnect
i would move all this connect stuff into a class with its functionality.
from class you can call a sub in activity to show/hide the connect ProgressDialog.
 

YIM bunchhat

Active Member
Licensed User
i would remove this StopService(Starter)/StartService(Starter)
let the timer enabled because u already check If connected = False Then reconnect
i would move all this connect stuff into a class with its functionality.
from class you can call a sub in activity to show/hide the connect ProgressDialog.
hello when I keep timer enable, during Progressdialogshow it seem refresh or blink my app
 

MarkusR

Well-Known Member
Licensed User
u can use a boolean value flag if dialog should get visible or hide. so it will done once.
 
Last edited:
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