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There are number of Layouts provided by Android which will can use in Android applications to provide different feel, look and view. Also each layout has a set of attributes.
Android application can be written using C++, Java, and Kotlin languages. The Android SDK tools compile your code along with any data and resource files into an APK, An Android package, This is an archive file with a .apksuffix. And One APK file contains all the contents of an Android app and this is the file that Android-powered devices use to install the app.