从片断中获取数据到viewPager片断

// 在片断中定义需要获取的数据的变量和访问方法
public class MyFragment extends Fragment {
    private String data;

    public void setData(String data) {
        this.data = data;
    }

    // 在onCreateView方法中展示获取到的数据
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.fragment_layout, container, false);
        TextView textView = view.findViewById(R.id.textView);
        textView.setText(data);
        return view;
    }
}

// 在活动中创建片断实例并传递数据
public class MainActivity extends AppCompatActivity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        MyFragment fragment = new MyFragment();
        fragment.setData("Hello World");

        ViewPager viewPager = findViewById(R.id.viewPager);
        FragmentPagerAdapter adapter = new FragmentPagerAdapter(getSupportFragmentManager()) {
            @Override
            public Fragment getItem(int position) {
                return fragment;
            }

            @Override
            public int getCount() {
                return 1;
            }
        };
        viewPager.setAdapter(adapter);
    }
}