Android apps are bits of software that run on the Android operating system. They can be downloaded on Android tablets, phones and televisions. They’re excellent at using the camera, touchscreen, and GPS functions of the device. Installing many apps on an Android device can impact battery performance and life.

Understanding the Android platform and its design principles is vital in the creation of Android apps. It also requires developing an appropriate app architecture that can be separated from UI and OS-related code into pieces that share responsibilities. These components can be activated in asynchronous fashion by the system via the broadcast mechanism that is activated by the intents.

Java is the preferred language for Android development, although Kotlin has gained a lot of attention in recent years. Both languages are supported by the Android SDK. A large developer community is online to help newcomers to the language understand and troubleshoot problems.

The Android OS is divided into layers. The application layer contains the standard apps that come with the OS, in addition to any other proprietary apps that are integrated with specific devices for example, phones with a music player and dialer. The Android application layer is comprised of custom firmware, such as CyanogenMod or OMFGB. They can be installed to customize the functionality of certain devices.

Another reason that stops certain apps from working is compatibility. If an app is designed specifically for the US but not compatible with your European device, it won’t work and will be listed in the Play Store as “incompatible”.

https://droidkingforum.co.uk/blog/android-device-manager-in-software-development