a-month-of-flutter (31 Part Series)
Originally published on bendyworks.com.
For this festive day of Christmas, I'm going to do something more fun and add a fancy icon. For android I will be using an adaptive icon so that it looks good in any shape and has a nice wiggle of movement.
A big thank you goes to @tommy_emo_ for creating this awesome design.
There is a nice
flutter_launcher_icons package that makes the technical implementation easy.
To start, require
flutter_launcher_icons as a
pubspec.yaml. Then there will be a new
flutter_icons key added with several values.
flutter_icons: android: true ios: true image_path_android: assets/icon/ic_launcher_xxxhdpi.png image_path_ios: assets/icon/ios.png adaptive_icon_background: assets/icon/ic_background.png adaptive_icon_foreground: assets/icon/ic_foreground.png
ios set to
true specifies that the tool should build icons for both Android and iOS.
Then there are four images defined:
image_path_androidwill be used for the Android app and should be a full icon with transparent edges. This will get several sizes generated by the tool so I use the xxxhdpi size as the source image.
image_path_ioswill be used for the iOS app and should not have any transparent edges. It is the same as the adaptive icon but with both layers in one image.
adaptive_icon_backgroundis the background scene of the adaptive icon. For Birb it's the sun and hills.
adaptive_icon_foregroundis the forground of the adaptive icon. For Birb it's the bird.
Once those four images were added to the
assets/icon directory I ran the
flutter_launcher_icons tool to generate the correct assets and added all the changes to git.
$ flutter packages pub run flutter_launcher_icons:main Android minSdkVersion = 16 Creating default icons Android Overwriting the default Android launcher icon with a new icon Creating adaptive icons Android Overwriting default iOS launcher icon with new icon
The new icon on Android's home screen with a rounded square shape:
The new icon in Android's app switcher with a circle shape:
The new icon on iOS's home screen:
The new icon in iOS's app switcher:
Many times as a mobile developer I have to work on apps without the API ready that was crucial for the feature I was implementing. Either the backend was developed by another team that was not entirely in sync with us or our backend team had no chance to implement those endpoints earlier. For this reason, I was not able to satisfy the Definition of Done but it does not mean that I have implemented the UI only.