片段或ViewPager无法正常工作

Question

我有一个带有标签的活动。 在活动的onCreate方法中，我有以下代码：

@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);

    }

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);
    }

而且ViewPager的适配器类是：

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);
        }
    }

当我启动活动并且第一个片段加载到第一个选项卡上但是当我滑动到第二个选项卡时，出现了相同的片段，就会发生问题。

感谢帮助。

Answer 1

更改您的适配器方法，然后尝试这种方式

@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;
        }
        }