Android API Level 22
Android API Level 22, also known as Android 5.1 Lollipop, is a specific version of the Android operating system's application programming interface (API) that defines the set of features, permissions, and system behaviors available to developers. It was released in March 2015 as an incremental update to Android 5.0, introducing bug fixes, performance improvements, and new APIs for device management and connectivity. Developers target this API level to ensure compatibility with devices running Android 5.1 and to access its specific functionalities.
Developers should learn and use Android API Level 22 when building apps that need to support older devices running Android 5.1 Lollipop, as it represents a significant user base in legacy markets. It is particularly useful for apps requiring features like multiple SIM card support, enhanced notifications, or improved Wi-Fi and Bluetooth APIs introduced in this version. Understanding this API level helps in managing app compatibility and targeting specific Android versions in the manifest file.