How to center the elements in ConstraintLayout

Question

I am using ConstraintLayout in my application to make applications layout. I am trying to a create a screen wheren one EditText and Button

Answer 1

You can center a view as a percentage of the screen size.

This example uses 50% of width and height:

This was done using ConstraintLayout version 1.1.3. Don't forget to add it to your dependencies in the gradle, and increase the version if there is a new version out there:

dependencies {
...
    implementation 'com.android.support.constraint:constraint-layout:1.1.3'
}