跑马灯textview

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public class MarqueeTextView extends TextView {   public MarqueeTextView(Context con) {      super(con);   }   public MarqueeTextView(Context context, AttributeSet attrs) {      super(context, attrs);   }   public MarqueeTextView(Context context, AttributeSet attrs, int defStyle) {      super(context, attrs, defStyle);   }   @Override   public boolean isFocused() {      return true;   }   @Override   protected void onFocusChanged(boolean focused, int direction,         Rect previouslyFocusedRect) {   }}

/** * 切换跑马灯效果 * @param isOn isOn为true代表开启,为false代表关闭 * @since 2015-7-2下午3:33:20 * @author cuixingwang */public void switchTitleMarquee(boolean isOn){   if(isOn){      tv_title.setEllipsize(TextUtils.TruncateAt.MARQUEE);      tv_title.setMarqueeRepeatLimit(Integer.MAX_VALUE);      tv_title.setLayoutParams(new LinearLayout.LayoutParams(DensityUtils.dp2px(context, 180), LayoutParams.WRAP_CONTENT));      tv_title.setHorizontallyScrolling(true);   }else{      tv_title.setEllipsize(TextUtils.TruncateAt.END);      tv_title.setLayoutParams(new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));   }}

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