ViewPager的学习

 1 private List<View> viewList;
 2 private ViewPager pager;
 3 private PagerTabStrip tab;
 4 
 5 protected void onCreate(Bundle savedInstanceState) {
 6         super.onCreate(savedInstanceState);
 7         setContentView(R.layout.activity_navi);
 8         Intent oldpager = getIntent();
 9         int num = oldpager.getIntExtra("Authorization", 0);
10         viewList = new ArrayList<View>();
11         /**
12          * 通过View对象去作为ViewPager的数据源
13          */
14         View firstView, secondView;
15         titleList = new ArrayList<String>();
16         firstView = View.inflate(this, R.layout.activity_machine_inquiry, null);
17         titleList.add("机器查询");
18         if (num == 0) {
19             secondView = View.inflate(this, R.layout.activity_stu_info, null);
20             //为ViewPager页卡设置标题
21             titleList.add("用户信息");
22         }else{
23             secondView = View.inflate(this, R.layout.activity_stu_inquiry, null);
24             titleList.add("学生查询");
25         }
26         viewList.add(firstView);
27         viewList.add(secondView);
28 
29         //为PagerTabStrip设置一些属性
30         tab = (PagerTabStrip) findViewById(R.id.stuTab);
31         tab.setBackgroundColor(Color.YELLOW);
32         tab.setTextColor(Color.RED);
33         tab.setDrawFullUnderline(false);
34         tab.setTabIndicatorColor(Color.GREEN);
35 
36         //初始化ViewPager
37         pager = (ViewPager) findViewById(R.id.stuPager);
38 
39         //创建PagerAdapter的适配器
40         MyPagerAdapter adapter = new MyPagerAdapter(viewList, titleList);
41 
42         //ViewPager加载适配器
43         pager.setAdapter(adapter);
44     }
45 }

 1 package com.example.wanderingzj.stumanage;
 2 
 3 import android.support.v4.view.PagerAdapter;
 4 import android.view.View;
 5 import android.view.ViewGroup;
 6 
 7 import java.util.List;
 8 
 9 /**
10  * Created by samsung on 2015/10/28.
11  */
12 public class MyPagerAdapter extends PagerAdapter {
13     private List<View> viewList;
14     private List<String> titleList;
15 
16     public MyPagerAdapter(List<View> viewList, List<String> titleList){
17         this.viewList = viewList;
18         this.titleList = titleList;
19     }
20 
21     /**
22      * 返回页卡数量
23      * @return
24      */
25     @Override
26     public int getCount() {
27         return viewList.size();
28     }
29 
30     /**
31      * View是否来自于对象
32      * @param arg0
33      * @param arg1
34      * @return
35      */
36     @Override
37     public boolean isViewFromObject(View arg0, Object arg1) {
38         return arg0 == arg1;
39     }
40 
41     /**
42      * 实例化一个页卡
43      * @param container
44      * @param position
45      * @return
46      */
47     @Override
48     public Object instantiateItem(ViewGroup container, int position) {
49         container.addView(viewList.get(position));
50         return viewList.get(position);
51     }
52 
53     /**
54      * 销毁一个页卡
55      * @param container
56      * @param position
57      * @param object
58      */
59     @Override
60     public void destroyItem(ViewGroup container, int position, Object object) {
61         container.removeView(viewList.get(position));
62     }
63 
64     /**
65      * 设置ViewPager页卡标题
66      * @param position
67      * @return
68      */
69     @Override
70     public CharSequence getPageTitle(int position) {
71         return titleList.get(position);
72     }
73 }