Android app development is one of the most popular and in–demand types of mobile app development. Android is a Linux–based operating system for mobile devices such as smartphones and tablet computers. Android was developed by the Open Handset Alliance, led by Google, and other companies.

Android apps are written in the Java programming language and use the Android SDK (software development kit). The Android SDK includes a set of tools and libraries that allow you to develop Android apps.

Some of the tools and technologies that an experienced app development firm uses:

Android Studio: Android Studio is the official IDE (integrated development environment) for developing Android apps. It is based on the IntelliJ IDEA platform and includes all the necessary tools for developing Android apps.

Android SDK: The Android SDK is a set of tools and libraries that allow you to develop Android apps. It includes the Android Studio IDE, the Android SDK tools, the Android platform, and the Android emulator.

Java: Java is a programming language that is used for developing Android apps. The Android SDK includes a Java compiler and a Java Virtual Machine.

XML: XML is a markup language that is used for designing UI (user interface) for Android apps. XML files are used to define the layout of an Android app.

SQLite: SQLite is a database that is used to store data for Android apps. SQLite is used to store data such as user preferences, app settings, and app data.

Android app development is a complex process that requires a wide range of tools and technologies. These tools and technologies allow you to develop high–quality Android apps.