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Description:

flutter dynamic icon plus

flutter_dynamic_icon_plus #
A flutter plugin for dynamically changing app icon and app icon batch number (iOS only) in the mobile platform. Supports only iOS (with version > 10.3).
Usage #
To use this plugin, add flutter_dynamic_icon_plus as a dependency in your pubspec.yaml file.
Getting Started #
Check out the example directory for a sample app using flutter_dynamic_icon_plus.
Android Integration #
Blacklist
Based on discussion on stackoverflow found issue when call onTaskRemoved on several devices. So, we add an approach to blacklist these devices via:

blacklistBrands
blacklistManufactures
blacklistModels

Add Service
Add service under application in your manifest
<application...>

<service
android:name="com.solusibejo.flutter_dynamic_icon_plus.FlutterDynamicIconPlusService"
android:stopWithTask="false"/>

<activity.../>
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Add Activity Alias
Update android/src/main/AndroidManifest.xml as follows:
<application ...>
<activity
android:name=".MainActivity"
android:launchMode="singleTop"
android:theme="@style/LaunchTheme"
android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
android:hardwareAccelerated="true"
android:windowSoftInputMode="adjustResize"
android:enabled="true">

<meta-data
android:name="io.flutter.embedding.android.NormalTheme"
android:resource="@style/NormalTheme"
/>

<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>





<activity-alias
android:label="Your app"
android:icon="@mipmap/ic_launcher_1"
android:roundIcon="@mipmap/ic_launcher_1"
android:name=".icon_1"
android:exported="true"
android:enabled="false"
android:targetActivity=".MainActivity">

<meta-data
android:name="io.flutter.embedding.android.NormalTheme"
android:resource="@style/NormalTheme"
/>

<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>

</activity-alias>

<activity-alias
android:label="Your app"
android:icon="@mipmap/ic_launcher_2"
android:roundIcon="@mipmap/ic_launcher_2"
android:name=".icon_2"
android:exported="true"
android:enabled="false"
android:targetActivity=".MainActivity">

<meta-data
android:name="io.flutter.embedding.android.NormalTheme"
android:resource="@style/NormalTheme"
/>

<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>

</activity-alias>
</application>
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Include applicationIdSuffix
If your app contains applicationIdSuffix please add applicationId on your activity-alias name for example
<activity-alias
android:label="Your app"
android:icon="@mipmap/ic_launcher_1"
android:roundIcon="@mipmap/ic_launcher_1"
android:name="${applicationId}.icon_1"
android:exported="true"
android:enabled="false"
android:targetActivity=".MainActivity">

<meta-data
android:name="io.flutter.embedding.android.NormalTheme"
android:resource="@style/NormalTheme"
/>

<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>

</activity-alias>

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Known Issues

Each android version will have different behavior, with Android 8 it may take a few seconds before we can notice the change
Due to Splash screen problems of newest Android versions, please consider to remove the below code in your activivy and activity-alias tags:

<meta-data
android:name="io.flutter.embedding.android.SplashScreenDrawable"
android:resource="@drawable/launch_background"
/>
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iOS Integration #
Index

2x - 120px x 120px
3x - 180px x 180px

To integrate your plugin into the iOS part of your app, follow these steps

First let us put a few images for app icons, they are

teamfortress@2x.png, teamfortress@3x.png
photos@2x.png, photos@3x.png,
chills@2x.png, chills@3x.png,

These icons shouldn't be kept in Assets.xcassets folder, but outside. When copying to Xcode, you can select 'create folder references' or 'create groups', if not you will get and error when uploading the build to the AppStore saying: (Thanks to @nohli for this observation)
TMS-90032: Invalid Image Path - - No image found at the path referenced under key 'CFBundleAlternateIcons':...

Here is my directory structure:

Next, we need to setup the Info.plist

Add Icon files (iOS 5) to the Information Property List
Add CFBundleAlternateIcons as a dictionary, it is used for alternative icons
Set 3 dictionaries under CFBundleAlternateIcons, they are correspond to teamfortress, photos, and chills
For each dictionary, two properties — UIPrerenderedIcon and CFBundleIconFiles need to be configured
If the sub-property UINewsstandIcon is showing under Icon files (iOS 5) and you don't plan on using it (it is intended for use with Newstand features), erase it or the app will get rejected upon submission on the App Store

Note that if you need it work for iPads, You need to add these icon declarations in CFBundleIcons~ipad as well. See here for more details.
Here is my Info.plist after adding Alternate Icons
Screenshot

Raw
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>CFBundleDevelopmentRegion</key>
<string>en</string>
<key>CFBundleExecutable</key>
<string>$(EXECUTABLE_NAME)</string>
<key>CFBundleIcons</key>
<dict>
<key>CFBundleAlternateIcons</key>
<dict>
<key>chills</key>
<dict>
<key>CFBundleIconFiles</key>
<array>
<string>chills</string>
</array>
<key>UIPrerenderedIcon</key>
<false/>
</dict>
<key>photos</key>
<dict>
<key>CFBundleIconFiles</key>
<array>
<string>photos</string>
</array>
<key>UIPrerenderedIcon</key>
<false/>
</dict>
<key>teamfortress</key>
<dict>
<key>CFBundleIconFiles</key>
<array>
<string>teamfortress</string>
</array>
<key>UIPrerenderedIcon</key>
<false/>
</dict>
</dict>
</dict>
<key>CFBundleIdentifier</key>
<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
<key>CFBundleInfoDictionaryVersion</key>
<string>6.0</string>
<key>CFBundleName</key>
<string>flutter_dynamic_icon_example</string>
<key>CFBundlePackageType</key>
<string>APPL</string>
<key>CFBundleShortVersionString</key>
<string>$(FLUTTER_BUILD_NAME)</string>
<key>CFBundleSignature</key>
<string>????</string>
<key>CFBundleVersion</key>
<string>$(FLUTTER_BUILD_NUMBER)</string>
<key>LSRequiresIPhoneOS</key>
<true/>
<key>UILaunchStoryboardName</key>
<string>LaunchScreen</string>
<key>UIMainStoryboardFile</key>
<string>Main</string>
<key>UISupportedInterfaceOrientations</key>
<array>
<string>UIInterfaceOrientationPortrait</string>
<string>UIInterfaceOrientationLandscapeLeft</string>
<string>UIInterfaceOrientationLandscapeRight</string>
</array>
<key>UISupportedInterfaceOrientations~ipad</key>
<array>
<string>UIInterfaceOrientationPortrait</string>
<string>UIInterfaceOrientationPortraitUpsideDown</string>
<string>UIInterfaceOrientationLandscapeLeft</string>
<string>UIInterfaceOrientationLandscapeRight</string>
</array>
<key>UIViewControllerBasedStatusBarAppearance</key>
<false/>
</dict>
</plist>

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Now, you can call FlutterDynamicIconPlus.setAlternateIconName with the CFBundleAlternateIcons key as the argument to set that icon.
Dart/Flutter Integration #
From your Dart code, you need to import the plugin and use it's static methods:
import 'package:flutter_dynamic_icon_plus/flutter_dynamic_icon_plus.dart';

try {
if (await FlutterDynamicIconPlus.supportsAlternateIcons) {
await FlutterDynamicIconPlus.setAlternateIconName(
iconName: "icon_name",
blacklistBrands: ['Redmi'],
blacklistManufactures: ['Xiaomi'],
blacklistModels: ['Redmi 200A'],
);
print("App icon change successful");
return;
}
} on PlatformException {} catch (e) {}
print("Failed to change app icon");

...

// get currently icon
final currentIcon = await FlutterDynamicIconPlus.alternateIconName;

// set batch number
try {
if (Platform.isIOS) {
await FlutterDynamicIconPlus.setApplicationIconBadgeNumber(9399);
}
} on PlatformException {} catch (e) {}

// gets currently set batch number
if (Platform.isIOS) {
int batchNumber = FlutterDynamicIconPlus.getApplicationIconBadgeNumber();
}
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Available methods #

Method
Type
Description

supportsAlternateIcons
bool
To check this app support alternate app icons or not

alternateIconName
String
To get currently active app icon

setAlternateIconName(iconName,blacklistBrands,blacklistManufactures,blacklistModels)
Nullable String params
To update app icon, set iconName with specific value. To restore default app icon fill with null. Fill blacklistBrands, blacklistManufactures, and/or blacklistModels to use old approach (force restart), this property just work on Android only.

applicationIconBadgeNumber
int
To get app icon badge, number of push notification received. This method just work on iOS only.

setApplicationIconBadgeNumber(batchIconNumber)
int params
To set app icon badge just work on iOS only.

Check out the example app for more details
Screenrecord #
Showing App Icon change Android #
https://github.com/chandrabezzo/flutter_dynamic_icon_plus/assets/16184998/6644c2ca-9de3-4c75-b9c1-7e279022bc14
Showing App Icon change iOS #
https://github.com/chandrabezzo/flutter_dynamic_icon_plus/assets/16184998/519e94a4-9643-462b-bb66-f92714e1c56e
Showing Batch number on app icon #
https://github.com/chandrabezzo/flutter_dynamic_icon_plus/assets/16184998/4d63a167-6905-4a1c-b8cf-049cc2f1d12d
Reference #
This was made possible because this blog. I borrowed a lot of words from this blog.
https://medium.com/ios-os-x-development/dynamically-change-the-app-icon-7d4bece820d2
This plugin inspired from another existing plugin. I copy a lot of code from these plugin.
https://pub.dev/packages/flutter_dynamic_icon
https://pub.dev/packages/dynamic_icon_flutter