Text in Android

Layout 01

<?xml version="1.0" encoding="utf-8"?><android.support.constraint.ConstraintLayout

     xmlns:android="http://schemas.android.com/apk/res/android" 

     xmlns:tools="http://schemas.android.com/tools" 

     xmlns:app="http://schemas.android.com/apk/res-auto" 

     android:layout_width="match_parent" 

     android:layout_height="match_parent" 

     tools:context=".MainActivity">

    <TextView 

     android:layout_width="wrap_content" 

     android:layout_height="wrap_content" 

     android:text="Hello World!" 

     app:layout_constraintBottom_toBottomOf="parent" 

     app:layout_constraintLeft_toLeftOf="parent" 

     app:layout_constraintRight_toRightOf="parent" 

     app:layout_constraintTop_toTopOf="parent" />

</android.support.constraint.ConstraintLayout>

 

Layout 02

 <?xml version="1.0" encoding="utf-8"?><android.support.constraint.ConstraintLayout    xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    xmlns:app="http://schemas.android.com/apk/res-auto"    android:layout_width="match_parent"    android:layout_height="match_parent"    tools:context=".MainActivity">

    <TextView        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="Hello World!"        app:layout_constraintBottom_toBottomOf="parent"        app:layout_constraintLeft_toLeftOf="parent"        app:layout_constraintRight_toRightOf="parent"/>

</android.support.constraint.ConstraintLayout>