simplauncher/app/src/main/res/layout/fragment_about.xml

<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/aboutLayout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.sduduzog.slimlauncher.ui.main.AboutFragment">

    <android.support.constraint.ConstraintLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

        <TextView
            android:id="@+id/textView5"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_marginStart="16dp"
            android:layout_marginLeft="16dp"
            android:layout_marginTop="32dp"
            android:layout_marginEnd="16dp"
            android:layout_marginRight="16dp"
            android:text="@string/about_title"
            android:textSize="36sp"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent"
            tools:text="Slim launcher" />

        <TextView
            android:id="@+id/aboutDescriptionText"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_marginStart="32dp"
            android:layout_marginLeft="32dp"
            android:layout_marginTop="8dp"
            android:layout_marginEnd="32dp"
            android:layout_marginRight="32dp"
            android:layout_marginBottom="8dp"
            android:text="@string/about_text"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@+id/textView5" />


    </android.support.constraint.ConstraintLayout>
</ScrollView>