Android Question what is the best icon size for android 5 devices ?

[Addo]

after many trys and fails i am trying to show an icon in notification with b4a as mentioned in this thread

https://www.b4x.com/android/forum/threads/calling-notifcation-from-service.91623/

i am trying to use the built in notification that comes with the ide

sizes that i have tried and fail

16x16 / 24x24 / 36x36 / 72x72

all of them fail to show instead showing a blue circle i have tried with different ide and the notifcation icon shows normally on the android 5 version but the other ide use an old sdk i assume the new sdk version that google force us to use is the problem ? any one else stuck with this issue with android 5 or only me ?

 

[Peter Simpson]

Notification Icons
24 px (22px inset)
36 px
48 px

I personally have never had any issues showing notifictaion icons, even if I use the application icon it still shows with no issues whatsoever.

If you are still stuck then you should give the following link a go https://www.b4x.com/android/forum/threads/custom-notifications-channel.91634/

 

[Addo]

@Peter Simpson are you targeting android 5 devices ?

if so which sdk version you use in b4a 26 ?

because no matter which icon i use it does not show in the big icon only the small icon showing as in the image a blue circle

all other android version works just fine the problem is only with android 5 versions

 

[Addo]

this problem happened when i set

android:targetSdkVersion="26"

if i remove it from manifest the icon show very normally

and I have to target sdk 26 to following the google rules

 

[Peter Simpson]

I'm currently targeting 27 and it's working perfectly fine for me.

I've just put this together in 5 minutes, it's working perfectly fine for me target 27, my current phone is running Android 8.1.0. Below is a screen shot of a shirt as a notification icon

Shirt icon left of 'Service Notifocation'.

If you get completely lost with the built-in NB, then I strongly suggest that you use the link below and try Erel's new updated NB6, I previously tried it and it works great, but the screen shot above is just using the normal built-in NB.

https://www.b4x.com/android/forum/threads/nb6-notifications-builder-class-2018.91819/

Enjoy...

 

[Erel]

Remember that starting from Android 5 the icon colors are ignored. The transparent parts are used as a mask.

As I wrote in the other thread you made, you should use barx's NotificationBuilder library and set the large icon.