TextView跑马灯效果

<TextView

android:id="@+id/txt"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:ellipsize="marquee"

android:focusable="true"

android:focusableInTouchMode="true"

android:marqueeRepeatLimit="marquee_forever"

android:singleLine="true"

android:text="显示内容"

android:textSize="20sp"/>