How to use ConstraintLayout in an Android app?

ConstraintLayout is a powerful layout manager for Android that allows you to create complex user interfaces with a flat view hierarchy. By using constraints, you can position and size your views in a flexible and efficient manner.

Basic Usage

To start using ConstraintLayout in your Android app, follow these steps:

1. Add the ConstraintLayout dependency to your build.gradle file:

dependencies {
    implementation 'androidx.constraintlayout:constraintlayout:2.1.0'
}
        

2. Use ConstraintLayout in your XML layout file:

Using ConstraintSet for Dynamic Changes

You can dynamically modify constraints in your app using ConstraintSet. Here's an example:

ConstraintSet constraintSet = new ConstraintSet();
constraintSet.clone(constraintLayout);
constraintSet.connect(R.id.textView, ConstraintSet.TOP, R.id.anotherView, ConstraintSet.BOTTOM, 8);
constraintSet.applyTo(constraintLayout);