public class HomefragmentAdapter extends FragmentPagerAdapter {
   
    private String tabtitle_homefragments[];
    public HomefragmentAdapter(FragmentManager fm,String tabtitle_homefragments[]) {
        super(fm);
        this.tabtitle_homefragments = tabtitle_homefragments;
    }
    //获取Fragement
    @Override
    public Fragment getItem(int position) {

        Fragment fragment = null;
        switch (position) {
            case 0:
                fragment = new recommendfragment();
                break;
            case 1:
                fragment = new foodfragment();
                break;
            case 2:
                fragment = new manfragment();
                break;
            case 3:
                fragment = new womanfragment();
                break;
            case 4:
                fragment = new babyfragment();
                break;
            case 5:
                fragment = new digitalfragment();
                break;
            case 6:
                fragment = new makeupfragment();
                break;
        }
        return fragment;
    }

    @Override
    public int getCount() {
        return 7;
    }

教程里的方法是根据materialId写的

但因为我的tab标题是写死的，所以创建了首页顶部导航栏对应的fragment，却不知道如何向每个fragment里添加网络数据