RemoteViews 中包含一个TextView 怎样实现跑马灯效果

RemoteViews 中包含一个TextView 怎样实现跑马灯效果

具体代码如下：
配置文件：

 <TextView
    android:id="@+id/txt_trackinfo"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_alignParentTop="true"
    android:layout_toRightOf="@+id/iv_cover"
    android:ellipsize="marquee"
    android:focusable="true"
    android:focusableInTouchMode="true"
    android:gravity="center"
    android:paddingLeft="33dip"
    android:paddingRight="33dip"
    android:paddingTop="4dip"
    android:singleLine="true"
    android:textColor="#33B5E5"
    android:textSize="15sp" />

 代码如下：


        RemoteViews views = new RemoteViews(getPackageName(), R.layout.newstatusbar);
    String trackinfo = getTrackName();
    String artist = getArtistName();
    if (artist == null || artist.equals(MediaStore.UNKNOWN_STRING)) {
        artist = getString(R.string.unknown_artist_name);
    }
    /// M: change the text color along theme change @{
    if (MusicFeatureOption.IS_SUPPORT_THEMEMANAGER) {
        Resources res = getResources();
        int textColor = res.getThemeMainColor();
        if (textColor != 0) {
            views.setTextColor(R.id.txt_trackinfo, textColor);
        }
    }
    /// @}
    //views.setBundle(R.id.txt_trackinfo,"requestFocus",null);
    trackinfo += " - " + artist;
    views.setTextViewText(R.id.txt_trackinfo, trackinfo);

求高手指导 指导~~~

android:id="@+id/tv5"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:singleLine="true"
android:ellipsize="marquee"
android:marqueeRepeatLimit="marquee_forever"
android:focusableInTouchMode="true"
android:focusable="true"
/>