片段或ViewPager无法正常工作

Question

我有一个带有选项卡的活动。在我有以下的代码活动的onCreate方法：

@Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.detail_team); 

     Intent i = getIntent(); 
     myTeam = i.getParcelableExtra("TeamObject"); 
     //MatchAsyncTask mat = new MatchAsyncTask()execute(); 

     final Toolbar toolbar = (Toolbar) findViewById(R.id.toolbarTeam); 
     setSupportActionBar(toolbar); 
     getSupportActionBar().setDisplayHomeAsUpEnabled(true); 

     final ViewPager viewPager = (ViewPager) findViewById(R.id.vpTeam); 
     setupViewPager(viewPager); 

     TabLayout tabLayout = (TabLayout) findViewById(R.id.tabsTeam); 
     tabLayout.setupWithViewPager(viewPager); 

     CollapsingToolbarLayout collapsingToolbar = 
       (CollapsingToolbarLayout) findViewById(R.id.collapse_toolbar_team); 
     collapsingToolbar.setTitle(myTeam.getName()); 

     ImageView img = (ImageView)findViewById(R.id.team_detail_header); 
     String strImg1 = "f"+String.valueOf(myTeam.getId()); 
     int resId1 = getResources().getIdentifier(strImg1, "drawable", getPackageName()); 
     img.setImageResource(resId1); 

    } 

的setWithViewPager函数的代码是这样的：

private void setupViewPager(ViewPager viewPager) { 
     ViewPagerAdapter adapter = new ViewPagerAdapter(getSupportFragmentManager()); 

     Bundle args = new Bundle(); 
     args.putInt("TeamId",myTeam.getId()); 
     PlayerFragment pf = new PlayerFragment(); 
     pf.setArguments(args); 

     InfoMatchFragment partidos = new InfoMatchFragment(); 

     adapter.addFrag(pf, "Plantel"); 
     adapter.addFrag(partidos, "Partidos"); 
     viewPager.setAdapter(adapter); 
    } 

而对于ViewPager适配器类是：

static class ViewPagerAdapter extends FragmentPagerAdapter { 
     private final List<Fragment> mFragmentList = new ArrayList<>(); 
     private final List<String> mFragmentTitleList = new ArrayList<>(); 

     public ViewPagerAdapter(FragmentManager manager) { 
      super(manager); 
     } 

     @Override 
     public Fragment getItem(int position) { 
      return mFragmentList.get(position); 
     } 

     @Override 
     public int getCount() { 
      return mFragmentList.size(); 
     } 

     public void addFrag(Fragment fragment, String title) { 
      mFragmentList.add(fragment); 
      mFragmentTitleList.add(title); 
     } 

     @Override 
     public CharSequence getPageTitle(int position) { 
      return mFragmentTitleList.get(position); 
     } 
    } 

这个问题发生在我通过活动并且第一个片段加载到第一个选项卡上时，但是当我滑动到第二个选项卡时，同一片段已显示。

感谢您的帮助。

Answer 1

更改您适配器方法，并尝试这种方式

@Override 
     public Fragment getItem(int position) { 
     switch (position) { 
     case 0: 
     PlayerFragment pf = new PlayerFragment(); 
      //pf.setArguments(args); 
       return pf; 
      case 1: 
       return new InfoMatchFragment(); 

      default: 
       return null; 
     } 
     }