White square icon on android

https://stackoverflow.com/questions/44845797/firebase-cloud-messaging-how-to-set-the-notification-icon-on-android#44846227

I set up the drawable folder like so:

I was suspecting that it might be because my icon had colors, so I downloaded a random image on the web that is white with no background:

And I’ve also set the default icon in my AndroidManifest.xml file:

  <meta-data
    android:name="com.google.firebase.messaging.default_notification_icon"
    android:resource="@drawable/notification_icon" />

And here I’m setting the icon field to notification_icon: https://developers.google.com/cloud-messaging/http-server-ref#downstream-http-messages-json (p.s. I’m aware that’s GCM, but it works. I’m receiving the notification with everything besides the icon)

What am I missing? All I see is a white square inside a grey circle.

This is my backend code: Pushex.push(%{title: user.name, body: "message goes here", badge: 1, sound: "default", icon: "notification_icon"}, to: user.fcm_token, using: :gcm) (https://github.com/tuvistavie/pushex)

[rajaishwary]

@damathryx to fix this issue, you need to add the white icon with transparent background.

Changes in AndroidManifest.xml [in application level]

  <meta-data
    android:name="com.google.firebase.messaging.default_notification_icon"
    android:resource="@mipmap/icon"
  />
  <meta-data android:name="com.google.firebase.messaging.default_notification_color"
    android:resource="@color/orange" 
  />

… and add white logo with transparent background in res.

sample icon image. It should be like below:

My compile and target sdk versions.

Hope it will help you and feel free to ask if it doesn’t work for you.

[EdmundMai]

@diegorodriguesvieira fixed it…

Fixed it… this is so stupid. Was inspired by this answer: https://stackoverflow.com/a/28387744/1555312

I made my notification icon my app icon:

<meta-data
    android:name="com.google.firebase.messaging.default_notification_icon"
    android:resource="@mipmap/ic_launcher" />

And then the magic line in android/app/build.gradle…

defaultConfig {
    targetSdkVersion 20 // this has to be < 21
    ...
}

Hope I save hours of someone else’s life