Android Question built in notification, no icon

F

Fadi-l

Member
Hi ...
the built in notification lib, doesn't show an icon

I create a new project with this code
B4X: 
Sub Activity_Create(FirstTime As Boolean)
    'Do not forget to load the layout file created with the visual designer. For example:
    'Activity.LoadLayout("Layout1")
    Dim n As Notification
    n.Initialize
    n.Icon = "icon"
    n.SetInfo("test", "test", Me)
    n.Notify(1)
End Sub

the result:


no icon in the circle

test project attached

I tried it on Android 6.1 (note 4)

What should I do ?

Thank you ....
 

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JohnC

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Try using the NB6 lib:

NB6 - Notifications Builder

Background The notifications features changed a lot as Android evolved. Android 8 (with targetSdkVersion 26+) adds another complexity with the introduction of notification channels. The built-in Notification object was rewritten in B4A v8 to work properly with all versions. This is a good...
www.b4x.com
 
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F

Fadi-l

Member
thank you JohnC for the reply

I tried it, but when i use Service.StartForeground with NB6 notification and test it on Galaxy A10 (9.0)
it gives me this error:

B4X: 
** Receiver (timerservice) OnReceive **
*** Service (starter) Create ***
** Service (starter) Start **
** Service (timerservice) Create **
** Service (timerservice) Start **
Service started in foreground mode.
android.app.RemoteServiceException: Bad notification for startForeground: java.lang.RuntimeException: invalid channel for service notification: Notification(channel=null pri=1 contentView=null vibrate=null sound=null defaults=0xfffffffc flags=0x43 color=0x00000000 vis=PRIVATE semFlags=0x0 semPriority=0 semMissedCount=0)
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1915)
    at android.os.Handler.dispatchMessage(Handler.java:106)
    at android.os.Looper.loop(Looper.java:216)
    at android.app.ActivityThread.main(ActivityThread.java:7258)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:494)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:975)
 
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JohnC

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Are you getting this error with the example or your own code?

The NB6 uses this new thing called "Channels" for the notifications and it seems like the error is related to this.
 
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F

Fadi-l

Member
this code:

B4X: 
    Dim n As NotificationBuilder
    n.Initialize
    n.Priority = 1
    n.SmallIcon = "icon"
    n.OnGoingEvent = True
    n.AutoCancel = False
    n.DefaultSound = False
    n.DefaultVibrate = False
    n.ContentTitle = Application.LabelName
    n.ContentText = "test ..."
    n.setActivity(Main)
    n.Notify(100)
    Service.StartForeground(100, n.GetNotification)
B4X:

is there a problem in my code ?
 
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JohnC

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Test the example first, and if it works, then find the difference between your code and the example.
 
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F

Fadi-l

Member
JohnC said:
Test the example first, and if it works, then find the difference between your code and the example.
Click to expand...

Same problem ...

Any help ??
if the icon appears the in built notification, that's will fix the problem, because the Service.StartForeground with built notification doesn't make any error
 
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F

Fadi-l

Member
I tried NB6 Class

after some minutes the service stopped with this error
this happened just one time on Note4, on Galaxy 10 worked fine

B4X: 
** Service (timerservice) Create **
** Service (timerservice) Start **
android.app.RemoteServiceException: Bad notification posted from package com.lutuf.SurvivalShip: Couldn't update icon: StatusBarIcon(icon=Icon(typ=RESOURCE pkg=com.lutuf.SurvivalShip id=0x00000000) visible user=0 )
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2019)
    at android.os.Handler.dispatchMessage(Handler.java:102)
    at android.os.Looper.loop(Looper.java:158)
    at android.app.ActivityThread.main(ActivityThread.java:7225)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120)

I replaced this code :
B4X: 
    n.Initialize2(notification.IMPORTANCE_LOW)
    n.Icon = "icon"
    n.OnGoingEvent = True
    n.Light   = False
    n.Vibrate = False
    n.Sound = False
    n.SetInfo(title, value, Main)
    n.Notify(100)
    Service.StartForeground(100, n)

With this one:
B4X: 
    Private icon As Bitmap
    icon = LoadBitmapResize(File.DirAssets, "notification_icon.png", 24dip, 24dip, False)
    Dim n As NB6
    n.Initialize("default", Application.LabelName, "LOW").AutoCancel(False).SmallIcon(icon)
    n.Build(title, value, "", Main).Notify(100)


But how to use
Service.StartForeground(100, n) and n.OnGoingEvent = True
with NB6 ?
 
Last edited:
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Erel

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This thread is becoming too messed up to be useful.

Fadi-l said:
But how to use
Service.StartForeground(100, n) and n.OnGoingEvent = True
with NB6 ?
Click to expand...
NB6.Build returns a regular Notification object. You can pass it to Service.StartForeground. No need to set OnGoingEvent as all foreground notifications behave like that.

For further discussion please start a new thread.
 
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JohnC

Expert
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Longtime User
One other thing I found out is that some OS versions (ie. android 5.x) are very picky on the icon size and will just display a blank circle in it's notification if it's not right.

I found 62 x 62 x 32 worked best for me.
 
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