从AsyncTaskLoader更新进度条？

public class MyLoader extends AsyncTaskLoader<Integer> {
    private int progress;

    public MyLoader(Context context) {
        super(context);
    }

    @Override
    protected void onStartLoading() {
        if (progress != 0) {
            deliverResult(progress);
        } else {
            forceLoad();
        }
    }

    @Override
    public Integer loadInBackground() {
        // 执行后台加载任务
        for (int i = 0; i <= 100; i++) {
            // 模拟加载过程
            try {
                Thread.sleep(100);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            progress = i;
            publishProgress(progress);
        }
        return progress;
    }

    @Override
    public void deliverResult(Integer data) {
        super.deliverResult(data);
    }
}

public class MainActivity extends AppCompatActivity implements LoaderManager.LoaderCallbacks<Integer> {
    private ProgressBar progressBar;

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

        progressBar = findViewById(R.id.progress_bar);

        // 初始化LoaderManager
        getSupportLoaderManager().initLoader(0, null, this);
    }

    @NonNull
    @Override
    public Loader<Integer> onCreateLoader(int id, @Nullable Bundle args) {
        // 创建Loader实例
        return new MyLoader(this);
    }

    @Override
    public void onLoadFinished(@NonNull Loader<Integer> loader, Integer data) {
        // 处理加载的结果，更新进度条的进度
        progressBar.setProgress(data);
    }

    @Override
    public void onLoaderReset(@NonNull Loader<Integer> loader) {
        // 重置Loader
    }
}