指示器的实现



• 

• 在buil.gradler 的  dependencies 写入: compile'com.android.support:design:23.3.0'
• 在布局上写如: xmlns:app="http://schemas.android.com/apk/res-a"uto

• //layout布局
  

  <android.support.design.widget.TabLayout
     android :layout_width= "match_parent"
     android :layout_weight= "1"
     android :layout_height= "40dp"
     app :tabMode= "scrollable"
     android :id= "@+id/tab"
     app :tabSelectedTextColor="@android:color/holo_red_light"
     ></ android.support.design.widget.TabLayout>
  
  
  //找到控件后
  
  
  private static final String[] title = new String[]{ "娱乐" , "热点 " , " 科技 ", " 社会 ", "汽车 " , " 体育 ", " 推荐", " 财经" };
  
  
  for (int i=0 ;i< title. length;i++){
     tab .addTab( tab.newTab().setText( title[i]));
  }
  
  
  vp.setOnPageChangeListener( newTabLayout.TabLayoutOnPageChangeListener( tab ));
  //vp.addOnPageChangeListener(newTabLayout.TabLayoutOnPageChangeListener(tab));
  tab .setOnTabSelectedListener( newTabLayout.OnTabSelectedListener() {
     @Override
     public void onTabSelected(TabLayout.Tab tab) {
         vp.setCurrentItem(tab.getPosition());
     }
  
  
     @Override
     public void onTabUnselected(TabLayout.Tab tab) {
  
  
     }
     @Override
     public void onTabReselected(TabLayout.Tab tab) {
  
  
     }
  });