Question

我有一个登录用户（Coach），并且在个人资料中，我想显示该实体的更多字段，例如程序计数等，来自网络调用，该字段将保存到Coach实体表中，而其他字段例如名称，用户ID不会更改。

我已经进行了调用，并且能够将所需的字段记录到logcat中，这意味着它们存在，但是当我尝试在db中更新其值时，它不能反映出来。我正在使用Stetho来查看数据库。

在片段中，我已调用存储库以使用如下的viewmodel获取和更新配置文件：

    mViewModel = ViewModelProviders.of(this).get(ProfileViewModel.class);
    mViewModel.getCoach();

viewmodel调用存储库

   public Coach getCoach(){
        coach = repository.getCoachProfile();
        Log.d(TAG, "CPrCountVM:\t" + coach.programsCount);
        return coach;
    }

在存储库中，我调用了getCoachProfile方法来处理所有newtork和db交互，例如：

   public class CoachRepository {

    private static final String TAG = CoachRepository.class.getSimpleName();

    public CoachDAO coachDAO;
    private Context context;
    private boolean hasLoggedIn = false;
    private Coach coach;

    public CoachRepository(Application application) {
        SportsDatabase database = SportsDatabase.getInstance(application);
        coachDAO = database.coachDAO();
        context = application.getApplicationContext();
    }

    public boolean attemptLogin(){
        Call<CoachDetails> call = RestClient.getRestInstance().getLoginService()
                .loginCoach("snehil@hi5academy.com", "123@abcd");

        call.enqueue(new Callback<CoachDetails>() {
            @Override
            public void onResponse(Call<CoachDetails> call, Response<CoachDetails> response) {
                if (response.isSuccessful()){
                    hasLoggedIn = true;
                    CoachDetails details = response.body();
                    Coach coach = details.getCoach();
                    Log.d(TAG, "Nick:\t" + coach.nickName);
                    Log.d(TAG, "gender:\t" + coach.gender);
                    new PrefsUtils(context).saveCoachId(coach.coachId);
                    new PrefsUtils(context).saveLoginStatus(hasLoggedIn);
                    context.startActivity(new Intent(context, MainActivity.class));
                    saveCoachBio(coach);
                }
            }

            @Override
            public void onFailure(Call<CoachDetails> call, Throwable t) {
                Toast.makeText(context, "Login Failed", Toast.LENGTH_SHORT).show();
            }
        });
        return hasLoggedIn;
    }

    public Coach getCoachProfile(){
        Call<CoachDetails> call = RestClient.getRestInstance().getCoachBioService()
                .profileCoach(new PrefsUtils(context).getCoachId());

        call.enqueue(new Callback<CoachDetails>() {
            @Override
            public void onResponse(Call<CoachDetails> call, Response<CoachDetails> response) {
                if (response.isSuccessful()){
                    Log.d(TAG, "Got Profile Response");
                    CoachDetails details = response.body();
                    coach = details.getCoach();
                    Log.d(TAG, "coach id:\t" + coach.coachId);
                    Log.d(TAG, "coach programs count:\t" + coach.programsCount);
                    updateCoachBio(coach);
                }
            }

            @Override
            public void onFailure(Call<CoachDetails> call, Throwable t) {

            }
        });

        return coach;

    }

    public void saveCoachBio(Coach coach) {
        new SaveCoachBioTask(coachDAO).execute(coach);
    }

    public void updateCoachBio(Coach coach) {
        new UpdateCoachBioTask(coachDAO).execute(coach);
    }

    public class SaveCoachBioTask extends AsyncTask<Coach, Void, Void> {

        private CoachDAO dao;

        public SaveCoachBioTask(CoachDAO dao) {
            this.dao = dao;
        }

        @Override
        protected Void doInBackground(Coach... coaches) {
            dao.saveCoachBio(coaches[0]);
            return null;
        }
    }

    public class UpdateCoachBioTask extends AsyncTask<Coach, Void, Void> {

        private CoachDAO dao;

        public UpdateCoachBioTask(CoachDAO dao) {
            this.dao = dao;
        }

        @Override
        protected Void doInBackground(Coach... coaches) {
            dao.updateCoachBio(coaches[0]);
            return null;
        }
    }

}

这是我的dao界面，用于定义：

@Dao
public interface CoachDAO {

    @Insert(onConflict = OnConflictStrategy.IGNORE)
    void saveCoachBio(Coach coach);

    @Update
    void updateCoachBio(Coach coach);

//    @Query("select * from coach_bio where coachId = :id")
//    LiveData<Coach> getCoachId(String id);
//
    @Query("select * from coach_bio where coachId = :id limit 1")
    Coach getCoachDetails(String id);

//    @Query("select coachId from coach_bio")
//    String id;

}

有人可以帮助我了解为什么更新不起作用。我也尝试过在更新之前按ID和手动设置字段进行查找，但这是行不通的。在这种情况下最好的方法是什么？谢谢。

Android Room实体未更新

0 个答案: