In the new Android version, the apps now have an API target level set for v17, which is equivalent to Android 4.2. This means that apps designed for Android 4.2 or lower may be blocked from running.
Google recently released a new developer preview for Android P. With the upcoming OS, the company is bringing a lot of new features, and according to a report from Android Police, it may even block apps created for Android 4.1 or lower. This restriction is intended to address performance and security issues that come with installing older apps in the new Android version and cleaning up Google’s Play Store apps that haven’t been updated for years, probably since their first release.
This is seen as Google’s attempt to streamline targeted API levels within apps. The company has already made it clear that any app will be blocked unless it targets the latest API level. API levels basically represent an Android version using an integer, which increases with each new version of Android released. On Android P, the minimum API level for apps is set to v17, which is equivalent to Android 4.2.
According to the report, the developer documentation for Android P states that “applications targeting low quality will fail to install and run.” Also, a warning appears when trying to boot an old app in the first Android P Developer Preview and it is not known whether these apps will be completely blocked in the final Android P release.
Android P Developer Preview can only be downloaded on Pixel and Pixel 2 smartphones. It comes with native support for groove display. There are noticeable visual changes in the Quick Settings panel where notifications now feature rounded corners. You can read a quick rundown of the features discovered so far in the new Android version.