Android Question Barcode Apps Stoped after Android 10 Upgrades

infow

Member
Licensed User
ZBAR or ZXING stopped to work after Android 10 updates...

No messages, just don´t open the camera in any mode, Debug or Release.

Help please
 

JohnC

Well-Known Member
Licensed User
Is your app properly requesting camera permission?
 

infow

Member
Licensed User
Probably not, I´m using the original version of the apps in the forums.
Until this last updates worked fine...
 
Last edited:

Johan Schoeman

Expert
Licensed User
Probably not, I´m using the original version of the apps in the forums.
Until this last updates worked fine...
ZBAR (you need to have library RuntimePermission enabled):
B4X:
#Region  Project Attributes
    #ApplicationLabel: ZbarBarcodeScanner
    #VersionCode: 1
    #VersionName:
    'SupportedOrientations possible values: unspecified, landscape or portrait.
    #SupportedOrientations: landscape
    #CanInstallToExternalStorage: False

#End Region


#Region  Activity Attributes
    #FullScreen: False
    #IncludeTitle: 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.
    Dim rp As RuntimePermissions

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 zb1 As ZbarBarcodeScanner
    Private b1 As Button
    Private b2 As Button
    Private b3 As Button
    Private l1 As Label
    Dim frontCamId As Int
    Dim backCamId As Int
    Dim cnt As Int = 0
    
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("main")
    
    Dim Result As Boolean = True                                                                       
    If Not(rp.Check(rp.PERMISSION_CAMERA)) Then                                                       
        rp.CheckAndRequest(rp.PERMISSION_CAMERA)                                                       
        Wait For Activity_PermissionResult (Permission As String, Result As Boolean)                   
    End If                                                                                             
    If Result Then
    
        zb1.LaserColor = Colors.Yellow
        zb1.MaskColor = Colors.ARGB(150, 0, 0, 200)
        zb1.BorderColor = Colors.Magenta
        zb1.BorderStrokeWidth = 5
        zb1.BorderLineLength = 40
        zb1.Visible = True
        
        zb1.ScanDelay = 200
        
        frontCamId = zb1.FrontFacingCamera
        Log("frontCamId = " & frontCamId)
        backCamId = zb1.BackFacingCamera
        Log("backCamId = " & backCamId)
    Else
        ToastMessageShow("Permission not granted", True)
        Return
    End If       

End Sub

Sub Activity_Resume
    

End Sub

Sub Activity_Pause (UserClosed As Boolean)

    zb1.Visible = False
    zb1.stopScanner
    
End Sub

Sub b1_Click
    
    zb1.toggleFlash
    
End Sub

Sub b2_Click
    
    zb1.Visible = True   
    Log("trying to start scanner")
    zb1.startScanner(0)
    
End Sub

Sub b3_Click
    zb1.Visible = False
    zb1.stopScanner
    
End Sub


Sub zb1_scan_result(scantext As String, scanformat As String)
    cnt = cnt + 1
    Log("B4A scantext = " & scantext)
    Log("B4A scanformat = " & scanformat)
    l1.Text = scantext & " : " & cnt
    
End Sub
Manifest:
B4X:
AddManifestText(
<uses-sdk android:minSdkVersion="17" android:targetSdkVersion="28"/>
<supports-screens android:largeScreens="true"
    android:normalScreens="true"
    android:smallScreens="true"
    android:anyDensity="true"/>)
'AddManifestText(<uses-feature android:name="android.hardware.telephony" android:required="false" />)
AddManifestText(<uses-feature android:name="android.hardware.camera" android:required="false" />)
AddManifestText(<uses-feature android:name="android.hardware.camera.autofocus" android:required="false" />)
AddManifestText(<uses-feature android:name="android.hardware.camera.flash" android:required="false" />)
'AddPermission("android.permission.ACCESS_COARSE_LOCATION")
'AddPermission("android.permission.INTERNET")
'AddPermission("android.permission.ACCESS_FINE_LOCATION")
'AddPermission("android.permission.WAKE_LOCK")
'AddPermission("android.permission.DEVICE_POWER")
'AddPermission("android.permission.ACCESS_COARSE_UPDATES")
'AddPermission("android.permission.READ_PHONE_STATE")
'AddPermission("android.permission.VIBRATE")
AddPermission("android.permission.CAMERA")
AddPermission("android.permission.FLASHLIGHT")
'AddPermission("android.hardware.camera")
'AddPermission("android.permission.INTERACT_ACROSS_USERS_FULL")
SetApplicationAttribute(android:icon, "@drawable/icon")
SetApplicationAttribute(android:label, "$LABEL$")

For ZXing (you need to have library RuntimePermission enabled):
B4X:
#Region  Project Attributes
    #ApplicationLabel: ZxingBarcodeScanner
    #VersionCode: 1
    #VersionName:
    'SupportedOrientations possible values: unspecified, landscape or portrait.
    #SupportedOrientations: landscape
    #CanInstallToExternalStorage: False
#End Region

#Region  Activity Attributes
    #FullScreen: False
    #IncludeTitle: 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.
    
    Private nativeMe As JavaObject
    Dim rp As RuntimePermissions

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 zx1 As ZxingBarcodeScanner
    Private b1 As Button
    Private b2 As Button
    Private b3 As Button
    
    Private l1 As Label
    
    Dim flag As Int = 0
    Dim runningavg As Int = 127
    
    Private l2 As Label
    Private l3 As Label
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("main")
    
    Dim Result As Boolean = True
    If Not(rp.Check(rp.PERMISSION_CAMERA)) Then
        rp.CheckAndRequest(rp.PERMISSION_CAMERA)
        Wait For Activity_PermissionResult (Permission As String, Result As Boolean)
    End If
    If Result Then
    
        nativeMe.InitializeContext
        
        l3.Text = ""
        zx1.LaserColor = Colors.Yellow
        zx1.MaskColor = Colors.ARGB(150, 0, 0, 200)
        zx1.BorderColor = Colors.Magenta
        zx1.BorderStrokeWidth = 5
        zx1.BorderLineLength = 40
        
        zx1.AutoFocusInterval = 500
        zx1.AutoFocus = True
        zx1.FocusMode = zx1.FOCUS_MODE_AUTO
        
        
        zx1.Visible = False
        
    Else
        ToastMessageShow("Permission not granted", True)
        Return
    End If

End Sub

Sub Activity_Resume
    

End Sub

Sub Activity_Pause (UserClosed As Boolean)
    zx1.Visible = False
    zx1.stopScanner

End Sub


Sub b1_Click
    
    zx1.toggleFlash
    
End Sub

Sub b2_Click
  
    zx1.Visible = True
    zx1.startScanner
    zx1.TurnFlashOn
    Log(zx1.isFlashOn)
  
End Sub

Sub b3_Click
    
    zx1.Visible = False
    zx1.stopScanner
    l1.Text = ""
    l2.Text = ""
    
End Sub

Sub zx1_scan_result (scantext As String, scanformat As String)
    
    nativeMe.RunMethod("playTone", Null)
    Dim tim As Long = 100
    nativeMe.RunMethod("vibrateOnce", Array(tim))
    Log ("B4A scan text = " & scantext)
    Log ("B4A scan format = " & scanformat)
    Log("isFlashOn = " & zx1.isFlashOn)
    l2.Text = scantext & " (type = " & scanformat & ")"
    
End Sub


Sub zx1_brightness_changed (bright As Int )                        'ADDED 6 MARCH 2016
'    Log("bright = " & bright)                                      'this is the average brightness of the frame that was captured for possible barcode extraction
    flag = flag + 1
    l1.Text = "Brigtness = " & bright
    If flag = 30 Then                                              'I only want to use the average brightness of every 30th frame to calculate a running brigtness average
        flag = 0                                                   'reset the count to zero for the next 30 frames
        If bright < 150 Then                                       'discard excessive high brigness values
            runningavg = (runningavg + bright) / 2
'            Log("runningavg brightness = " & runningavg)
            If runningavg < 70 Then
                If Not(zx1.isFlashOn) Then zx1.TurnFlashOn
            Else if runningavg > 115 Then
                If zx1.isFlashOn Then zx1.TurnFlashOff
            End If   
        End If   
    End If   
    l3.Text = "isFlashOn = " & zx1.isFlashOn
    
End Sub   


#If Java

import android.os.Vibrator;
import android.content.Context;

import android.media.ToneGenerator;
import android.media.AudioManager;

/**
*Vibrate with a given pattern.
*Pass in an array of Longs that are the durations for which to turn on or off the vibrator in milliseconds.
*The first value indicates the number of milliseconds to wait before turning the vibrator on. The next
*value indicates the number of milliseconds for which to keep the vibrator on before turning it off.
*Subsequent values alternate between durations in milliseconds to turn the vibrator off or to turn the vibrator on.
*Parameters:
*pattern ---> an array of longs of times for which to turn the vibrator on or off.
*repeat ---> the index into pattern at which to repeat, or -1 if you don't want to repeat.
*
*You need to add the following to the manifest file of the B4A project:
*AddPermission("android.permission.VIBRATE")
*/
public void vibratePattern(long[] pattern, int repeat) {
    
  Vibrator v = (Vibrator) BA.applicationContext.getSystemService(Context.VIBRATOR_SERVICE);
  if (v.hasVibrator()) {
    v.vibrate(pattern, repeat);
  }
}

/**
*Cancel vibration (in case of method vibratePattern being active)
*You need to add the following to the manifest file of the B4A project:
*AddPermission("android.permission.VIBRATE")
*
*/
public void vibrateCancel(int dummy) {
    
  Vibrator v = (Vibrator) BA.applicationContext.getSystemService(Context.VIBRATOR_SERVICE);
  if (v.hasVibrator()) {
     v.cancel();
  }
}

/**
*Vibrate continuously for the specified number of milliseconds
*You need to add the following to the manifest file of the B4A project:
*AddPermission("android.permission.VIBRATE")
*/
public void vibrateOnce(long duration) {
    
  Vibrator v = (Vibrator) BA.applicationContext.getSystemService(Context.VIBRATOR_SERVICE);
  if (v.hasVibrator()) {
     v.vibrate(duration);
  }
}


  public void playTone() {
      final ToneGenerator tg = new ToneGenerator(AudioManager.STREAM_NOTIFICATION, 100);
      tg.startTone(ToneGenerator.TONE_PROP_BEEP);
  }     

#End If
Manifest:
B4X:
AddManifestText(
<uses-sdk android:minSdkVersion="4" android:targetSdkVersion="28"/>
<supports-screens android:largeScreens="true"
    android:normalScreens="true"
    android:smallScreens="true"
    android:anyDensity="true"/>)
AddManifestText(<uses-feature android:name="android.hardware.telephony" android:required="false" />)
AddManifestText(<uses-feature android:name="android.hardware.camera" android:required="false" />)
AddManifestText(<uses-feature android:name="android.hardware.camera.autofocus" android:required="false" />)
AddManifestText(<uses-feature android:name="android.hardware.camera.flash" android:required="false" />)
'AddPermission("android.permission.ACCESS_COARSE_LOCATION")
AddPermission("android.permission.INTERNET")
AddPermission("android.permission.ACCESS_FINE_LOCATION")
AddPermission("android.permission.WAKE_LOCK")
AddPermission("android.permission.DEVICE_POWER")
'AddPermission("android.permission.ACCESS_COARSE_UPDATES")
AddPermission("android.permission.READ_PHONE_STATE")
AddPermission("android.permission.VIBRATE")
'AddPermission("android.permission.CAMERA")
'AddPermission("android.permission.FLASHLIGHT")
'AddPermission("android.hardware.camera")
SetApplicationAttribute(android:icon, "@drawable/icon")
SetApplicationAttribute(android:label, "$LABEL$")
 

DonManfred

Expert
Licensed User
ZBAR or ZXING stopped to work after Android 10 updates...

No messages, just don´t open the camera in any mode, Debug or Release.

Help please
If a app crashes then there is ALWAYS something in the LOG. Maybe the unfiltered, but NEVER nothing. There is no crash in Android without anything in the LOG.
 
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