Change Icon

Compatibility

✅   Android
✅   iOS

Features

All the features listed below can be performed at the runtime.

✅   Change App Icons
✅   Change App Label

Features only work for IOS for now

✅   Set Batch Number

Demo

IOS	Android

Android Setup

Step 1: Include plugin to your project

dependencies:
  changeicon: <latest version>

Step 2: Add activity-alias in AndroidManifest.xml

...
...
<application
    android:label="changeicon_example"
    android:icon="@mipmap/ic_launcher">
    <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">
        <meta-data
            android:name="io.flutter.embedding.android.NormalTheme"
            android:resource="@style/NormalTheme"
            />
        <meta-data
            android:name="io.flutter.embedding.android.SplashScreenDrawable"
            android:resource="@drawable/launch_background"
            />
        <intent-filter>
            <action android:name="android.intent.action.MAIN"/>
            <category android:name="android.intent.category.LAUNCHER"/>
        </intent-filter>
    </activity>

    <!-- Live Icon Addition -->
    <activity-alias
        android:name=".DarkTheme"
        android:enabled="false"
        android:icon="@mipmap/dark_theme"
        android:label="DarkThemeLabel"
        android:targetActivity=".MainActivity">
        <intent-filter>
            <action android:name="android.intent.action.MAIN"/>
            <category android:name="android.intent.category.LAUNCHER"/>
        </intent-filter>
    </activity-alias>

    <activity-alias
        android:name=".LightTheme"
        android:enabled="false"
        android:icon="@mipmap/light_theme"
        android:label="LightThemeLabel"
        android:targetActivity=".MainActivity">
        <intent-filter>
            <action android:name="android.intent.action.MAIN"/>
            <category android:name="android.intent.category.LAUNCHER"/>
        </intent-filter>
    </activity-alias>
    <!-- Live Icon Addition -->

    <meta-data
        android:name="flutterEmbedding"
        android:value="2" />

</application>
...
...

Step 3: Create classes

Create java/kotlin files with the same name as provided in activity-alias.

In the above AndroidManifest.xml example, 2 activity-alias are provided, so the number of java/kotlin files will be 2. Example:

1. DarkTheme.java

package com.example.changeicon_example;

public class DarkTheme {
}

2. LightTheme.java

package com.example.changeicon_example;

public class LightTheme {
}

One thing to note here is that, we have added two extra activity as activity-alias, and we now have 3 activity in total.

Step 4: Initialise plugin

List all the activity-alias class names. NOTE: MainActivity will also be added here as it containes the launch intent.

Changeicon.initialize(
    classNames: ['MainActivity', 'DarkTheme', 'LightTheme'],
);

Step 5: Switch App icon

Use switchIconTo to switch app icons. It takes in the className that must match the desired activity-alias android:name.

await _changeiconPlugin.switchIconTo(
    className: 'DarkTheme',
);

IOS Setup

Step 1: Include plugin to your project

dependencies:
  changeicon: <latest version>

Step 2: Include your icons to the project

Index

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

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

1. 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,
2. 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'.

Example:

3. Next, we need to setup the Info.plist
   1. Add Icon files (iOS 5) to the Information Property List
   2. Add CFBundleAlternateIcons as a dictionary, it is used for alternative icons
   3. Set 3 dictionaries under CFBundleAlternateIcons, they are correspond to teamfortress, photos, and chills
   4. For each dictionary, two properties — UIPrerenderedIcon and CFBundleIconFiles need to be configured
   5. 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.

Example:

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>
		<key>CFBundlePrimaryIcon</key>
		<dict>
			<key>CFBundleIconFiles</key>
			<array>
				<string>chills</string>
			</array>
			<key>UIPrerenderedIcon</key>
			<false/>
		</dict>
	</dict>
...
...
</dict>
</plist>

Dart/Flutter Integration

From your Dart code, you need to import the plugin and use it's static methods:

import 'package:flutter_dynamic_icon/flutter_dynamic_icon.dart';

try {
  if (await FlutterDynamicIcon.supportsAlternateIcons) {
    await FlutterDynamicIcon.setAlternateIconName("photos");
    print("App icon change successful");
    return;
  }
} on PlatformException {} catch (e) {}
print("Failed to change app icon");

...

// set batch number
try {
	await FlutterDynamicIcon.setApplicationIconBadgeNumber(9399);
} on PlatformException {} catch (e) {}

// gets currently set batch number
int batchNumber = FlutterDynamicIcon.getApplicationIconBadgeNumber();