SwitchViewGroup：垂直运动的活动条

<!--在这里加上广告小喇叭-->
<com.github.switchviewgroup.views.SwitchViewGroup
android:id="@+id/switchViewGroup"
android:layout_width="@dimen/vertical_view_group_width"
android:layout_height="@dimen/vertical_view_group_height"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:paddingLeft="10dp"
android:visibility="visible" />

for (int i = 0; i < 3; i++) {
datas.add("trumpet____" + i);
}
mSwitchViewGroup.addData(datas);
mSwitchViewGroup.startScroll();
mSwitchViewGroup.setOnClickTabListener(new SwitchViewGroup.OnClickTabListener() {
@Override
public void onClickTab(int index) {
Snackbar.make(mSwitchViewGroup, datas.get(index), Snackbar.LENGTH_SHORT).show();
}
});