ConstraintLayout - An Introduction

                                                                     

ConstraintLayout is an Android ViewGroup which allows you to position and size widgets in flexible way. It helps in building complex UI layouts with flat-hierarchy. Known for the highest level of resource optimization.


ConstraintLayout has only one direct class which is MotionLayout.

What is Constraint? 

Defined in English as “a limitation or restriction”. Constraints defines a relation between 2 widget which will define how those widgets will be positioned in the layout.

A few things to note:
  • Every view should have at least one constraint in its X and Y axes. If we don’t give the constraint the view will be move to its default position along that specific axis.
  • It can only set constraint along the same plan i.e vertical plan of a view can be constraint with vertical plan of another view, baselines can constraint to another baseline.
  • Each constraint handle can be used for just one constraint, but you can create multiple constraints (from different views) to the same anchor point.

Resources:

https://constraintlayout.com/
Location: India

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