我正在學(xué)習(xí) Android，我的任務(wù)是使用 Google Fit steps API 檢索步數(shù)數(shù)據(jù)。但是，我不斷收到“任務(wù)尚未完成”錯(cuò)誤。我不知道這是我那部分的代碼：private List<Fitness> readHistoryDataFromGoogle() {    DataReadRequest readRequest = createDataReadRequest();    Task<DataReadResponse> response = com.google.android.gms.fitness.Fitness.getHistoryClient(this, GoogleSignIn.getLastSignedInAccount(this)).readData(readRequest);    DataReadResponse responses  = response.getResult();    List <Fitness> fitnessItems = parseFitness(responses);    return fitnessItems;}private List<Fitness> parseFitness(DataReadResponse dataReadResponse) {    List<com.example.mentalhealthapp.Fitness> fitnessItems = new ArrayList<>();    for (Bucket bucket : dataReadResponse.getBuckets()) {        for (DataSet set : bucket.getDataSets()) {            for (DataPoint dataPoint : set.getDataPoints()) {                int numSteps = dataPoint.getValue(Field.FIELD_STEPS).asInt();                long startDateTime = dataPoint.getStartTime(TimeUnit.MILLISECONDS);                long endDateTime = dataPoint.getEndTime(TimeUnit.MILLISECONDS);                fitnessItems.add(new com.example.mentalhealthapp.Fitness(numSteps, startDateTime, endDateTime));            }        }    }    return fitnessItems;}非常感謝您的幫助！