Android Question First time working with a Service - get java error using RuntimePermissions

[tseyfarth]

Hello all,

Moving forward on my project I started a Service to handle in the background BLE.

It appears to start up OK, but when I go to check and request a permission (code below), the app crashes. I've tried having the rp variable in either the BLE Service or in the Starter (as a Public Var). Neither location makes a difference, it always crashes at the point shown below.

    For Each Permission As String In Array("android.permission.ACCESS_FINE_LOCATION", "android.permission.BLUETOOTH_SCAN", "android.permission.BLUETOOTH_CONNECT")
        Log("Permission = " & Permission )

        
        #If B4A or B4i
            rp.CheckAndRequest(Permission)            <<==========  Error
    '        Starter.rp.CheckAndRequest(Permission)  <<====  Error (when not remarked)
        #End If
        
        
        Wait For B4XPage_PermissionResult (Permission As String, Result As Boolean)

This is the error message provided - there are several other lines, but not really sure how much anybody might need to provide some help...

java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.Object java.lang.ref.WeakReference.get()' on a null object reference

Any ideas, direction or help would be greatly appreciated!
Thank you,
Tim

 

[MarcoRome]

rp.CheckAndRequest can only be called from an Activity. (also if rp.Check can be called from a service)

Read this

Service Modules

This is an old tutorial. Most of the information here is no longer correct. Basic4android v1.2 adds support for Service modules. Service modules play an important role in the application and process life cycle. Start with this tutorial if you haven't read it before: Android Process and...

www.b4x.com