Android apps are software programs that run on the Android OS. They can be downloaded on Android TVs, tablets, and phones. They are very good in using the camera, touchscreen and GPS features of the device. The presence of a lot of apps on an Android phone, however, can affect the life of batteries and performance.
Understanding the Android platform and its design principles is crucial to develop Android applications. It also requires a proper app architecture, which can separate UI- and OS-related codes into components with shared responsibilities. The system can trigger these components in asynchronous fashion using a broadcast mechanism that is activated by the intents.
Kotlin is growing in popularity as a language that is used for Android development. Both languages are supported by the Android SDK. Online, there’s an enormous community of developers who can help newcomers understand the language and help with any problems.
The Android OS is divided into layers. The app layer includes the standard apps that come with the OS, in addition to any other proprietary apps that are specifically designed for specific devices, like a music player or a phone dialer. The Android application layer also has customized firmware such as CyanogenMod and OMFGB, which can be installed on certain devices to customize their functionality.
Another reason that hinders certain apps from working is compatibility. If an application is created specifically for the US but not compatible with your European device, it will not work and be displayed in the Play Store as “incompatible”.
https://droidkingforum.co.uk/blog/android-device-manager-a-quick-overview