<com.lcw.viewpagertriangleindicator.ViewPagerTriangleIndicator
        android:id="@+id/vpti_main_tab"
        android:layout_width="match_parent"
        android:layout_height="45dp"
        android:background="@color/colorAccent"
        android:orientation="horizontal"
        lcw:visible_tab_num="3" />

    <android.support.v4.view.ViewPager
        android:id="@+id/vp_main_content"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

        //设置指示器标题(mTitles为一个List<String>集合)
        mViewPagerTriangleIndicator.setPageTitle(mTitles);
        //绑定ViewPager
        mViewPagerTriangleIndicator.setViewPagerWithIndicator(mViewPager);