java - 使用google fit android api读取数据时获取 "Task is not yet complete error"

Question

我正在学习 Android，我的任务是使用 Google Fit 步骤 API 检索步骤数据。但是，我不断收到“任务尚未完成”错误。我不确定

这是我该部分的代码:

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;
}

非常感谢您的帮助!

Answer 1

您遇到此问题是因为 API 请求(服务调用)是异步的，它们不会立即完成并返回数据，并且您无法像其他代码一样逐行运行它们。您必须等待该响应完成才能访问它返回的数据。从文档中它告诉你这是一个 REST api:

简要查看文档 https://developers.google.com/android/reference/com/google/android/gms/fitness/RecordingClient建议您应该在数据可用时查看它以显示数据。