Google has been developing a new publishing format to allow developers to distribute apps in a new format. Beginning in August, developers will need to publish their applications in the new Android App bundle format. The current APK format restricts the size of compressed downloads at 50MB. However, developers will be able to create APKs in the new format that is only 150MB.
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Developers will also be able use smaller files for their apps, and can update them quicker with the new format. This new technology has one problem: it isn’t supported by all platforms and apps. Developers publishing apps in other apps than the Google Play Store must manually export their apps to AAB format.
Android App Bundles is replacing the APK as Android’s standard publishing format. This format will allow developers to publish apps in a way that makes it easier for them target a wider range of devices. Sideloading will be prohibited and it will make Android apps distribution more difficult.
APKs allow users to easily install apps on Android devices. APKs, which are similar to APPX files on Windows 10 contain information about an app’s packages and instructions on how it should be installed. Google Play can be used as a repository or a manager of these files.
Android Studio allows developers check the signatures of APK files with the jarsigner command. It will display a message such as ‘jar verified’ but not include the CN=”androiddebug” in it’s output. It will also indicate if the APK file was signed by trusted third parties.