每當我重新選擇選項卡時，viewpager選項卡布局中的片段都會不斷增加

Question

我有三個選項卡，當用戶轉到第三個選項卡，然后又回到第一個選項卡時，第一個選項卡中的內容不會重置，並且表單會不斷重新加載。

這是我的代碼：

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.scorespagemain);
    viewPager = (ViewPager) findViewById(R.id.viewPager);
    CAdapter cAdapter = new Adapter(getSupportFragmentManager(), ScoresPageMain.this);
    viewPager.setAdapter(cAdapter);
    tabLayout = (TabLayout) findViewById(R.id.tabsstuff);
    tabLayout.setupWithViewPager(viewPager);
    tabLayout.setOnTabSelectedListener(new TabLayout.OnTabSelectedListener() {
        @Override
        public void onTabSelected(TabLayout.Tab tab) {
            viewPager.setCurrentItem(tab.getPosition());
        }

        @Override
        public void onTabUnselected(TabLayout.Tab tab) {
            viewPager.setCurrentItem(tab.getPosition());
        }

        @Override
        public void onTabReselected(TabLayout.Tab tab) {
            viewPager.setCurrentItem(tab.getPosition());
        }
    });
}

}

CAdapter類：

public class CAdapter extends FragmentPagerAdapter{
    String names[] = new String[] {"Top Teams", "Top Scores", "Top Players"};
    Context context;

    public CAdapter(FragmentManager fragmentManager, Context context){
        super(fragmentManager);
        this.context = context;
    }

    @Override
    public Fragment getItem(int position) {
        switch (position){
            case 0:
                return new TopTeams();
            case 1:
                return new TopScores();
            case 2:
                return new TopPlayers();
            default:
                return null;
        }
    }

    @Override
    public int getCount() {
        return names.length;
    }

    @Override
    public CharSequence getPageTitle(int position) {
        return names[position];
    }
}

Answer 1

嘗試在代碼中使用setOffscreenPageLimit() 。

希望這會幫助你。