Android Question Device adminstrator error

[Devv]

If admin.Enabled = False Then admin.Enable

when i use this code

im getting the following error message when i run that code from a service


** Activity (main) Pause, UserClosed = false **
job done
Error occurred on line: 639 (Internet)
java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.Object java.lang.ref.WeakReference.get()' on a null object reference
at anywheresoftware.b4a.objects.AdminManager.Enable(AdminManager.java:33)
at Project.Gammaskype.internet._receiver_finished(internet.java:2329)
at java.lang.reflect.Method.invoke(Native Method)
at anywheresoftware.b4a.shell.Shell.runMethod(Shell.java:702)
at anywheresoftware.b4a.shell.Shell.raiseEventImpl(Shell.java:339)
at anywheresoftware.b4a.shell.Shell.raiseEvent(Shell.java:246)
at java.lang.reflect.Method.invoke(Native Method)
at anywheresoftware.b4a.ShellBA.raiseEvent2(ShellBA.java:134)
at anywheresoftware.b4a.BA$2.run(BA.java:328)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:158)
at android.app.ActivityThread.main(ActivityThread.java:7224)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120)

Any ideas ?

 

[Widget]

Just off the top of my head, how about
if admin.Enabled = false then admin.Enable = true

 

[Devv]

Just off the top of my head, how about
if admin.Enabled = false then admin.Enable = true

that did not worked , any other ideas ?

 

[Widget]

that did not worked , any other ideas ?

It is complaining that something is not initialized. Are you sure you initialized Admin?

 

[Devv]

It is complaining that something is not initialized. Are you sure you initialized Admin?

there is no option to initialize admin

what i'm missing ?

 

[Devv]

EDIT : the problem was that it wont work from a service when i launched it from an activity it worked
thanks mr widget

 

[Widget]

If you are using B4A v5.20 or later, take a look at section 3 "Starter Service" in the B4AUserGuide.PDF.

"Everything seems to work fine during development. However the app "strangely" crashes from time
to time on the end user device.
The reason for those crashes is that the OS can start the process from a different activity or service.
For example if you use StartServiceAt and the OS kills the process while it is in the background.
Now the SQL object and the other resources will not be initialized. "
​

Please see the manual for the solution. Hope this helps.

 

[Erel]

As the documentation says, AdminManager.Enable can only be called from an Activity: https://www.b4x.com/android/forum/pages/results/?query=adminmanager.enable