安卓:如何在WorkManager安卓中使用LiveData inside doWork方法

implementation "androidx.work:work-runtime-ktx:2.7.0"
implementation "androidx.lifecycle:lifecycle-viewmodel-ktx:2.4.0"
implementation "androidx.lifecycle:lifecycle-runtime-ktx:2.4.0"

import androidx.annotation.NonNull;
import androidx.lifecycle.LiveData;
import androidx.lifecycle.MutableLiveData;
import androidx.work.Data;
import androidx.work.Worker;
import androidx.work.WorkerParameters;

public class MyWorker extends Worker {
    private MutableLiveData<String> liveData;

    public MyWorker(@NonNull Context context, @NonNull WorkerParameters workerParams) {
        super(context, workerParams);
        liveData = new MutableLiveData<>();
    }

    @NonNull
    @Override
    public Result doWork() {
        // 在doWork方法中使用LiveData
        Data inputData = getInputData();
        String inputString = inputData.getString("input_key");

        // 模拟耗时操作
        try {
            Thread.sleep(2000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }

        // 更新LiveData的值
        liveData.postValue("Work completed with input: " + inputString);

        // 返回成功的结果
        return Result.success();
    }

    public LiveData<String> getLiveData() {
        return liveData;
    }
}

import androidx.appcompat.app.AppCompatActivity;
import androidx.lifecycle.Observer;
import androidx.work.Data;
import androidx.work.OneTimeWorkRequest;
import androidx.work.WorkInfo;
import androidx.work.WorkManager;

public class MainActivity extends AppCompatActivity {
    private WorkManager workManager;

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

        workManager = WorkManager.getInstance(getApplicationContext());

        // 创建输入数据
        Data inputData = new Data.Builder()
                .putString("input_key", "Hello WorkManager")
                .build();

        // 创建OneTimeWorkRequest
        OneTimeWorkRequest workRequest = new OneTimeWorkRequest.Builder(MyWorker.class)
                .setInputData(inputData)
                .build();

        // 将WorkRequest加入WorkManager的队列中
        workManager.enqueue(workRequest);

        // 观察LiveData的变化
        MyWorker myWorker = new MyWorker(getApplicationContext(), null);
        LiveData<String> liveData = myWorker.getLiveData();
        liveData.observe(this, new Observer<String>() {
            @Override
            public void onChanged(String result) {
                // 处理LiveData的变化
                Log.d("LiveData", result);
            }
        });
    }
}