Артемий

public class ScrollingTextView extends TextView {

    public ScrollingTextView(Context context, AttributeSet attrs,
                             int defStyle) {
        super(context, attrs, defStyle);
    }

    public ScrollingTextView(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public ScrollingTextView(Context context) {
        super(context);
    }

    @Override
    protected void onFocusChanged(boolean focused, int direction,
                                  Rect previouslyFocusedRect) {
        if (focused) {
            super.onFocusChanged(focused, direction, previouslyFocusedRect);
        }
    }

    @Override
    public void onWindowFocusChanged(boolean focused) {
        if (focused) {
            super.onWindowFocusChanged(focused);
        }
    }

    @Override
    public boolean isFocused() {
        return true;
    }
}

<package.name.ScrollingTextView 
              android:layout_width="match_parent"
              android:layout_height="wrap_content"
              android:lines="1"
              android:scrollHorizontally="true"
              android:ellipsize="marquee"
              android:marqueeRepeatLimit="marquee_forever"/>