running line

mailactivity.kt

        findViewById<TextView>(R.id.running_text).isSelected=true

textview.xml

<TextView
        android:id="@+id/running_text"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:ellipsize="marquee"
        android:marqueeRepeatLimit="marquee_forever"
        android:padding="2dp"
        android:scrollHorizontally="true"
        android:singleLine="true"
        android:text="1234567890 qwert yuiop asdfghjkl zxcvbnm jhgfjfd nbmvccnv asdfrewyshgfds kjh l "
        app:layout_constraintBottom_toTopOf="@+id/textView"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent" />