How to set constraints between views in a ConstraintLayout using Kotlin Android

How to set constraints between views in a ConstraintLayout using Kotlin Android.

Here's a detailed step-by-step tutorial on how to set constraints between views in a ConstraintLayout using Kotlin for Android development:

Start by creating a new Android project in Android Studio and open the layout file (usually named activity_main.xml) where you want to set the constraints.
Change the root layout to a ConstraintLayout by replacing the existing layout tag (e.g., RelativeLayout, LinearLayout) with <androidx.constraintlayout.widget.ConstraintLayout>.
Add the views that you want to set constraints for inside the ConstraintLayout. You can use any view element like TextView, ImageView, etc.
To set constraints between views, you need to specify the constraints for each view individually. For each view, specify the following attributes within its opening tag:
- android:id: Assign a unique ID to the view. This ID will be used when setting constraints.
- app:layout_constraint: Specify the constraints for the view. This attribute can have various values depending on the type of constraint you want to set.
To set constraints for a view, you can use the app:layout_constraint attribute along with the following values:
- start: Aligns the start edge of the view with the start edge of another view or the parent ConstraintLayout.
- end: Aligns the end edge of the view with the end edge of another view or the parent ConstraintLayout.
- top: Aligns the top edge of the view with the top edge of another view or the parent ConstraintLayout.
- bottom: Aligns the bottom edge of the view with the bottom edge of another view or the parent ConstraintLayout.
- baseline: Aligns the baseline of the view with the baseline of another view.
- center: Centers the view horizontally or vertically within the parent ConstraintLayout.
- bias: Adjusts the bias of the view within its constraints. A bias value of 0.0 means the view is biased towards the start, while a value of 1.0 means it is biased towards the end.
To set constraints between two views, use the app:layout_constraint attribute on both views and specify the desired constraint values. For example, to align the start edge of View A with the end edge of View B, you can use the following attributes:
```
<TextView
    android:id="@+id/viewA"
    app:layout_constraintStart_toEndOf="@+id/viewB"
    ... />

<TextView
    android:id="@+id/viewB"
    ... />
```
You can also set constraints to the parent ConstraintLayout by using parent as the reference ID. For example, to align the top edge of View A with the top edge of the ConstraintLayout, use the following attribute:
```
<TextView
    android:id="@+id/viewA"
    app:layout_constraintTop_toTopOf="parent"
    ... />
```

You can adjust the constraints further by specifying additional attributes. For example, to add a margin between two views, use the app:layout_constraintMargin attribute along with the desired margin value:

<TextView
    android:id="@+id/viewA"
    app:layout_constraintStart_toEndOf="@+id/viewB"
    app:layout_constraintMarginStart="8dp"
    ... />

<TextView
    android:id="@+id/viewB"
    ... />

Repeat steps 6-8 to set constraints between other views as needed.
After setting the constraints, make sure to build and run the project to see the updated layout with the applied constraints.

That's it! You have now learned how to set constraints between views in a ConstraintLayout using Kotlin for Android development.