Can an App Icon Be Programmatically Changed Post-Installation on Android and iOS?

The ability to change an app icon programmatically after installation varies significantly between Android and iOS. This article will explore the differences in this capability across the two platforms and provide useful insights for developers.

Android

On Android, the process of changing an app icon programmatically is limited. As of the current development practices, there is no straightforward, built-in API or feature provided by Google to allow developers to dynamically change the app icon after installation without user interaction. Typically, the app's icon needs to be defined during the app package creation process and cannot be changed after the app has been installed on the user's device. However, if you are looking for user-specific or dynamic app rebranding, this can sometimes be achieved by providing users with the option to select different icons within the app itself.

iOS

For iOS, developers starting from version 10.3 have the ability to change the app icon programmatically using the setAlternateIconName method. This method allows developers to define a primary icon and alternate icons. The key difference is that these alternate icons must be defined in your app's asset catalog. When the user updates the app icon programmatically, the system will prompt the user to approve the change before the new icon is applied. This feature not only provides a more flexible user experience but also aligns with Apple’s guidelines and user consent policies.

Key Points for iOS

The setAlternateIconName method allows for multiple icons, but only those pre-defined in the app. The user must explicitly approve the change to see the new icon. This feature enhances the app's customization and visual appeal.

Implementation Considerations

Developers aiming to implement this feature on iOS need to consider the following:

Icon Preparation: Ensure that the alternate icons are properly prepared and added to the app bundle as part of the asset catalog. User Interaction: Handle the case where the user denies the change request. Consistency: Maintain visual consistency and ensure that the chosen icons align with the app’s branding.

Conclusion

While Android currently lacks a direct API for changing app icons after installation, iOS offers a rich and user-consented method for this functionality. Whether you're developing for Android or iOS, understanding these differences can help you design an app that offers the best user experience and complies with platform guidelines.

Further Reading

If you need specific implementation details or more in-depth information about the setAlternateIconName method, feel free to explore official Apple and Google developer documentation and resources.