Android系统中TextView实现滚动效果

android:singleLine="true" //单行显示,singleLine="true"已经过时了，这种：maxLines="1"
android:ellipsize="marquee" //跑马灯显示
android:marqueeRepeatLimit="marquee_forever"//永久滚动
android:focusable="true" //控件是否能够获取焦点
android:focusableInTouchMode="true" //是否在触摸模式下获得焦点

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

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

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

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

<com.xxx.xxx.xxx.MyTextView
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:singleLine="true" //singleLine="true"已经过时了，这种：maxLines="1"
 android:ellipsize="marquee"
 android:marqueeRepeatLimit="marquee_forever"
 android:focusable="true"
 android:focusableInTouchMode="true" />