ConstraintLayout is a layout manager introduced with Android 7. It is designed to ease the creation of flexible layouts that adapt to the size and orientation of the many Android devices now on the market. ConstraintLayout uses constraints to control the alignment and positioning of widgets in relation to the parent ConstraintLayout instance, guidelines, barriers and the other widgets in the layout. ConstraintLayout is the default layout for newly created Android Studio projects and is the recommended choice when designing user interface layouts. With this simple yet flexible approach to layout management, complex and responsive user interfaces can be implemented with surprising ease.
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