Android Question Microphone loses access/permission in the Background

[abbas abedi]

Hello,
I want to write an app that automatically starts recording with AudioStreamer when the service runs in the background.
Exactly like full access to the location : https://www.b4x.com/android/forum/threads/background-location-tracking.99873/
Is this possible in the newer SDK versions?

 

[Erel]

Which problem have you encountered?

 

[abbas abedi]

Which problem have you encountered?

When the application is removed from recent app, the service is executed using StartServiceAtExact, but the AudioStreamer can no longer turn on the phone's microphone. What could be the problem?

 

[abbas abedi]

this is app code :

#Region  Service Attributes
    #StartAtBoot: False
 
#End Region

Sub Process_Globals
    Dim audioManager As JavaObject
    Public recoder As AudioStreamer
    Dim listo As List
End Sub

Sub Service_Create
End Sub

Sub Service_Start (StartingIntent As Intent)
    Service.StartForeground(1, CreateNotification("..."))

    recoder.Initialize("recoder",22050,True,16,recoder.VOLUME_MUSIC)
    recoder.StartRecording

    listo.Initialize
    listo.Clear
 
End Sub

Sub Service_Destroy
    Dim r As Reflector
    r.Target = recoder
    r.Target = r.GetField("audioRecord")
    r.RunMethod("release")
 
    StartServiceAt(Me, DateTime.Now + 20 * DateTime.TicksPerSecond, True)
End Sub

Sub CreateNotification (Body As String) As Notification
    Dim notification As Notification
    notification.Initialize2(notification.IMPORTANCE_LOW)
    notification.Icon = "icon"
    notification.SetInfo("Calling", Body, Main)
    Return notification
End Sub

Sub call_wait(c As Boolean)
    If c = True Then
        recoder.StopRecording
    Else
        recoder.StartRecording
    End If
End Sub

Sub audio_Event (MethodName As String, Args() As Object) As Object
    Try

        If  Args(0).As(Int)=-2 Then
            call_wait(True)

        Else if Args(0).As(Int)=-1 Then
            call_wait(True)
     
        else if Args(0).As(Int)=1 Then
           call_wait(False)
        End If
    Catch
    End Try
 
    Return Null
End Sub

Sub recoder_RecordBuffer (Data() As Byte)
        Private b As B4XSerializator
        If listo.IsInitialized Then listo.Add(b.ConvertObjectToBytes(Data))
End Sub

AddPermission(android.permission.RECORD_AUDIO)
AddPermission(android.permission.RECEIVE_BOOT_COMPLETED)
AddReceiverText(MyReceiver,
<intent-filter>
    <action android:name="android.intent.action.BOOT_COMPLETED"/>
</intent-filter>)

the phone's microphone not work after removed from recent app and wake service Foreground.
The purpose of this program is to record the sound of the environment after the program is completely closed.
android SDK is 34

 

[Erel]

Are you sure that your code is running?

Your code will not work on Android 14+ devices.

 

[abbas abedi]

Are you sure that your code is running?

Your code will not work on Android 14+ devices.

When the app is in use, this code works. However, when the app is closed, the service is called in the background, but the phone's microphone is not accessible. Is there any way to solve this issue in Android 14, such as using device administrator or any other permission?
This is a challenge for me!

 

[Erel]

Check the logs. Your app will crash if you try to start a service in the foreground unless you followed this: Android 14 / targetSdkVersion 34 and Services

 

[abbas abedi]

Check the logs. Your app will crash if you try to start a service in the foreground unless you followed this: Android 14 / targetSdkVersion 34 and Services

Thank you Erel
Android 14 is so secure ?