如何将数据从活动发送到扩展PagerAdapter的类

// 数据模型类
public class MyDataModel {
    private String data;

    public MyDataModel(String data) {
        this.data = data;
    }

    public String getData() {
        return data;
    }
}

// 接口
public interface DataTransferInterface {
    void onDataTransfer(MyDataModel data);
}

// 活动
public class MyActivity implements DataTransferInterface {
    private MyPagerAdapter pagerAdapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        // 实例化数据模型类并设置数据
        MyDataModel dataModel = new MyDataModel("Hello, PagerAdapter!");

        // 创建PagerAdapter实例
        pagerAdapter = new MyPagerAdapter();

        // 将活动作为接口的实现传递给PagerAdapter
        pagerAdapter.setDataTransferInterface(this);

        // 将PagerAdapter设置给ViewPager
        ViewPager viewPager = findViewById(R.id.viewPager);
        viewPager.setAdapter(pagerAdapter);
    }

    // 实现接口方法，在这里将数据传递给PagerAdapter
    @Override
    public void onDataTransfer(MyDataModel data) {
        pagerAdapter.setData(data);
    }
}

// PagerAdapter
public class MyPagerAdapter extends PagerAdapter {
    private MyDataModel data;

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

    @Override
    public int getCount() {
        return 1; // 只有一个页面
    }

    @Override
    public boolean isViewFromObject(@NonNull View view, @NonNull Object object) {
        return view == object;
    }

    @NonNull
    @Override
    public Object instantiateItem(@NonNull ViewGroup container, int position) {
        // 创建视图并使用接收到的数据更新视图
        TextView textView = new TextView(container.getContext());
        textView.setText(data.getData());

        container.addView(textView);

        return textView;
    }

    @Override
    public void destroyItem(@NonNull ViewGroup container, int position, @NonNull Object object) {
        container.removeView((View) object);
    }
}