片段或ViewPager無法正常工作

Question

我有一個帶有選項卡的活動。在我有以下的代碼活動的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函數的代碼是這樣的：

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); 
    } 

而對於ViewPager適配器類是：

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); 
     } 
    } 

這個問題發生在我通過活動並且第一個片段加載到第一個選項卡上時，但是當我滑動到第二個選項卡時，同一片段已顯示。

感謝您的幫助。

Answer 1

更改您適配器方法，並嘗試這種方式

@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; 
     } 
     }