Android Auto Horizontal Scrolling TextView (marquee)

 import android.content.Context;
 import android.graphics.Rect;
 import android.text.TextUtils;
 import android.util.AttributeSet;
 import android.widget.TextView;

 /**
  * Created by Naresh Katta
  */

 public class MarqueeTextView extends TextView {
 
     public MarqueeTextView(Context context) {
         super(context);
         init();
     }

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

     public MarqueeTextView(Context context, AttributeSet attrs, int defStyleAttr) {
         super(context, attrs, defStyleAttr);
         init();
     }

     private void init() {
         setEllipsize(TextUtils.TruncateAt.MARQUEE);
         setMarqueeRepeatLimit(-1);
         setSelected(true);
     }

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

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

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

    //note this file has some limitations see comments of this answer for more details of limitations
}