Android Question gps service code in conflict with ezcamera

[Hccsoft]

Hi,
After verifying that the code of the starter service with the gps library and the ezcamera library worked well separately, we found that executing both causes some type of conflict that makes the application closes when executing this code :

cam.TakePicture(dirFileCam,fileNameCam)

The fact is that we have seen that the log show an error before even executing the activity_create:

--------- beginning of main
*** Service (starter) Create ***
** Service (starter) Start **
** Activity (main) Create, isFirst = true **
** Activity (main) Resume **
Error occurred on line: 339 (Main)
java.lang.NullPointerException: Attempt to invoke virtual method 'void anywheresoftware.b4a.BA.startActivityForResult(anywheresoftware.b4a.IOnActivityResult, android.content.Intent)' on a null object reference
   at net.garstangs.ezcamera.EZcamera.TakePicture(EZcamera.java:65)
   at b4a.example.main._camera(main.java:1153)
   at b4a.example.main._panel2_click(main.java:1556)
   at java.lang.reflect.Method.invoke(Native Method)
   at anywheresoftware.b4a.shell.Shell.runMethod(Shell.java:735)
   at anywheresoftware.b4a.shell.Shell.raiseEventImpl(Shell.java:357)
   at anywheresoftware.b4a.shell.Shell.raiseEvent(Shell.java:260)
   at java.lang.reflect.Method.invoke(Native Method)
   at anywheresoftware.b4a.ShellBA.raiseEvent2(ShellBA.java:144)
   at anywheresoftware.b4a.BA.raiseEvent2(BA.java:175)
   at anywheresoftware.b4a.BA.raiseEvent(BA.java:171)
   at anywheresoftware.b4a.objects.ViewWrapper$1.onClick(ViewWrapper.java:80)
   at android.view.View.performClick(View.java:5273)
   at android.view.View$PerformClick.run(View.java:21315)
   at android.os.Handler.handleCallback(Handler.java:743)
   at android.os.Handler.dispatchMessage(Handler.java:95)
   at android.os.Looper.loop(Looper.java:150)
   at android.app.ActivityThread.main(ActivityThread.java:5659)
   at java.lang.reflect.Method.invoke(Native Method)
   at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:822)
   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:712)
java.lang.RuntimeException: java.net.SocketException: sendto failed: EBADF (Bad file descriptor)
   at anywheresoftware.b4a.ShellBA.raiseEvent2(ShellBA.java:175)
   at anywheresoftware.b4a.BA.raiseEvent(BA.java:171)
   at anywheresoftware.b4a.gps.GPS$2.onGpsStatusChanged(GPS.java:99)
   at android.location.LocationManager$GpsStatusListenerTransport$1.handleMessage(LocationManager.java:1523)
   at android.os.Handler.dispatchMessage(Handler.java:102)
   at android.os.Looper.loop(Looper.java:150)
   at android.app.ActivityThread.main(ActivityThread.java:5659)
   at java.lang.reflect.Method.invoke(Native Method)
   at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:822)
   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:712)

If in the Activity_Resume we comment the lines marked with the red line, the previous error disappears and the code of the camera works again, but without the lines the service is not called and therefore the gps code does not work,

Could you tell us what the error might be?


this is the code that we use in the starter service:

#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 rp As RuntimePermissions
   Public GPS1 As GPS
   Private gpsStarted 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.
   GPS1.Initialize("GPS")

End Sub

Sub Service_Start (StartingIntent As Intent)

End Sub

Public Sub StartGps
   If gpsStarted = False Then
       GPS1.Start(0, 0)
       gpsStarted = True
   End If
End Sub


Public Sub StopGps
   If gpsStarted Then
       GPS1.Stop
       gpsStarted = False
   End If
End Sub


Sub GPS_LocationChanged (Location1 As Location)
   CallSub2(Main, "LocationChanged", Location1)
End Sub

Sub GPS_GpsStatus (Satellites As List)
   CallSub2(Main, "GpsStatus", Satellites)
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
   StopGps
End Sub

thanks and best regards,

Héctor.

 

[Erel]

I wouldn't use EZCamera library. You can do the same thing without this library: https://www.b4x.com/android/forum/threads/69215/#content

 

[Hccsoft]

thanks erel, I'll try it with camera intent

 

[Hccsoft]

It works perfectly,
thank you Erel.