使用历史数据

借助 History API，您的应用可以对健身存储区执行批量操作： 读取、插入、更新和删除历史健康和健身数据。 使用 History API 执行以下操作：

  • 读取使用其他设备插入或记录的健康和健身数据 。
  • 将批量数据导入 Google 健身。
  • 更新 Google 健身中的数据。
  • 删除应用之前存储的历史数据。

要插入包含会话元数据的数据，请使用 Session API。

读取数据

以下各部分介绍了如何读取不同类型的汇总数据。

读取详细的汇总数据

要读取历史数据，请创建一个 DataReadRequest 实例。

Kotlin

// Read the data that's been collected throughout the past week.
val endTime = LocalDateTime.now().atZone(ZoneId.systemDefault())
val startTime = endTime.minusWeeks(1)
Log.i(TAG, "Range Start: $startTime")
Log.i(TAG, "Range End: $endTime")

val readRequest =
    DataReadRequest.Builder()
        // The data request can specify multiple data types to return,
        // effectively combining multiple data queries into one call.
        // This example demonstrates aggregating only one data type.
        .aggregate(DataType.AGGREGATE_STEP_COUNT_DELTA)
        // Analogous to a "Group By" in SQL, defines how data should be
        // aggregated.
        // bucketByTime allows for a time span, whereas bucketBySession allows
        // bucketing by <a href="/fit/android/using-sessions">sessions</a>.
        .bucketByTime(1, TimeUnit.DAYS)
        .setTimeRange(startTime.toEpochSecond(), endTime.toEpochSecond(), TimeUnit.SECONDS)
        .build()

Java

// Read the data that's been collected throughout the past week.
ZonedDateTime endTime = LocalDateTime.now().atZone(ZoneId.systemDefault());
ZonedDateTime startTime = endTime.minusWeeks(1);
Log.i(TAG, "Range Start: $startTime");
Log.i(TAG, "Range End: $endTime");

DataReadRequest readRequest = new DataReadRequest.Builder()
        // The data request can specify multiple data types to return,
        // effectively combining multiple data queries into one call.
        // This example demonstrates aggregating only one data type.
        .aggregate(DataType.AGGREGATE_STEP_COUNT_DELTA)
        // Analogous to a "Group By" in SQL, defines how data should be
        // aggregated.
        // bucketByTime allows for a time span, while bucketBySession allows
        // bucketing by sessions.
        .bucketByTime(1, TimeUnit.DAYS)
        .setTimeRange(startTime.toEpochSecond(), endTime.toEpochSecond(), TimeUnit.SECONDS)
        .build();

上面的示例使用汇总数据点，其中每个 DataPoint 表示一天行走的步数。对于这个特定的应用场景 汇总数据点具有两大优势：

  • 您的应用与健身商店交换的数据量较少。
  • 您的应用不必手动汇总数据。

汇总多种活动类型的数据

您的应用可以使用数据请求来检索许多不同类型的数据。通过 以下示例展示了如何创建 DataReadRequest：获取您在 。结果数据与每个活动的卡路里数一致，如下所示： 在 Google 健身应用中报告，其中每项运动都有自己的分桶 热量数据

Kotlin

val readRequest = DataReadRequest.Builder()
    .aggregate(DataType.AGGREGATE_CALORIES_EXPENDED)
    .bucketByActivityType(1, TimeUnit.SECONDS)
    .setTimeRange(startTime.toEpochSecond(), endTime.toEpochSecond(), TimeUnit.SECONDS)
    .build()

Java

DataReadRequest readRequest = new DataReadRequest.Builder()
        .aggregate(DataType.AGGREGATE_CALORIES_EXPENDED)
        .bucketByActivityType(1, TimeUnit.SECONDS)
        .setTimeRange(startTime.toEpochSecond(), endTime.toEpochSecond(), TimeUnit.SECONDS)
        .build();

创建 DataReadRequest 实例后，请使用 HistoryClient.readData() 方法异步读取历史数据。

以下示例演示了如何从以下位置获取 DataPoint 实例： DataSet：

Kotlin

Fitness.getHistoryClient(this, GoogleSignIn.getAccountForExtension(this, fitnessOptions))
    .readData(readRequest)
    .addOnSuccessListener { response ->
        // The aggregate query puts datasets into buckets, so flatten into a
        // single list of datasets
        for (dataSet in response.buckets.flatMap { it.dataSets }) {
            dumpDataSet(dataSet)
        }
    }
    .addOnFailureListener { e ->
        Log.w(TAG,"There was an error reading data from Google Fit", e)
    }

fun dumpDataSet(dataSet: DataSet) {
    Log.i(TAG, "Data returned for Data type: ${dataSet.dataType.name}")
    for (dp in dataSet.dataPoints) {
        Log.i(TAG,"Data point:")
        Log.i(TAG,"\tType: ${dp.dataType.name}")
        Log.i(TAG,"\tStart: ${dp.getStartTimeString()}")
        Log.i(TAG,"\tEnd: ${dp.getEndTimeString()}")
        for (field in dp.dataType.fields) {
            Log.i(TAG,"\tField: ${field.name.toString()} Value: ${dp.getValue(field)}")
        }
    }
}

fun DataPoint.getStartTimeString() = Instant.ofEpochSecond(this.getStartTime(TimeUnit.SECONDS))
    .atZone(ZoneId.systemDefault())
    .toLocalDateTime().toString()

fun DataPoint.getEndTimeString() = Instant.ofEpochSecond(this.getEndTime(TimeUnit.SECONDS))
    .atZone(ZoneId.systemDefault())
    .toLocalDateTime().toString()

Java

Fitness.getHistoryClient(this, GoogleSignIn.getAccountForExtension(this, fitnessOptions))
        .readData(readRequest)
        .addOnSuccessListener (response -> {
            // The aggregate query puts datasets into buckets, so convert to a
            // single list of datasets
            for (Bucket bucket : response.getBuckets()) {
                for (DataSet dataSet : bucket.getDataSets()) {
                    dumpDataSet(dataSet);
                }
            }
        })
        .addOnFailureListener(e ->
            Log.w(TAG, "There was an error reading data from Google Fit", e));

}

private void dumpDataSet(DataSet dataSet) {
    Log.i(TAG, "Data returned for Data type: ${dataSet.dataType.name}");
    for (DataPoint dp : dataSet.getDataPoints()) {
        Log.i(TAG,"Data point:");
        Log.i(TAG,"\tType: ${dp.dataType.name}");
        Log.i(TAG,"\tStart: ${dp.getStartTimeString()}");
        Log.i(TAG,"\tEnd: ${dp.getEndTimeString()}");
        for (Field field : dp.getDataType().getFields()) {
            Log.i(TAG,"\tField: ${field.name.toString()} Value: ${dp.getValue(field)}");
        }
    }
}


private String getStartTimeString() {
    return Instant.ofEpochSecond(this.getStartTime(TimeUnit.SECONDS))
        .atZone(ZoneId.systemDefault())
        .toLocalDateTime().toString();
}

private String getEndTimeString() {
    return Instant.ofEpochSecond(this.getEndTime(TimeUnit.SECONDS))
            .atZone(ZoneId.systemDefault())
            .toLocalDateTime().toString();
}

读取每日总数据

Google 健身还可以让您轻松查看每日 指定数据类型。使用 HistoryClient.readDailyTotal() 方法检索您指定的数据类型（截至当前时间的午夜） 日期（以设备当前时区为准）。例如，将 TYPE_STEP_COUNT_DELTA 数据类型添加到此方法，以检索每日总计 步骤。您可以传递瞬时数据类型，该类型的数据每天汇总一次 总计。如需详细了解支持的数据类型，请参阅 DataType.getAggregateType。

无需授权即可订阅 Google 健身 来自 HistoryClient.readDailyTotal()的 TYPE_STEP_COUNT_DELTA 项更新 方法时，如果使用默认账号调用此方法， 作用域都已指定。 如果您需要在无法检测的地区使用步数数据，那么这项设置将非常有用 以显示权限面板，例如在 Wear OS 表盘上显示权限面板。

用户希望 Google 健身应用中显示的步数是一致的， 以及 Wear OS 表盘主题 获得一致且可靠的体验为保持步数的一致性，请订阅 Google 健身平台中的步骤，然后 更新计数 onExitAmbient()。 如需详细了解如何在表盘中使用这些数据，请参阅 表盘复杂功能 和 Android WatchFace 示例应用。

插入数据

如需插入历史数据，请先创建一个 DataSet 实例：

Kotlin

// Declare that the data being inserted was collected during the past hour.
val endTime = LocalDateTime.now().atZone(ZoneId.systemDefault())
val startTime = endTime.minusHours(1)

// Create a data source
val dataSource = DataSource.Builder()
    .setAppPackageName(this)
    .setDataType(DataType.TYPE_STEP_COUNT_DELTA)
    .setStreamName("$TAG - step count")
    .setType(DataSource.TYPE_RAW)
    .build()

// For each data point, specify a start time, end time, and the
// data value -- in this case, 950 new steps.
val stepCountDelta = 950
val dataPoint =
    DataPoint.builder(dataSource)
        .setField(Field.FIELD_STEPS, stepCountDelta)
        .setTimeInterval(startTime.toEpochSecond(), endTime.toEpochSecond(), TimeUnit.SECONDS)
        .build()

val dataSet = DataSet.builder(dataSource)
    .add(dataPoint)
    .build()

Java

// Declare that the data being inserted was collected during the past hour.
ZonedDateTime endTime = LocalDateTime.now().atZone(ZoneId.systemDefault());
ZonedDateTime startTime = endTime.minusHours(1);

// Create a data source
DataSource dataSource = new DataSource.Builder()
        .setAppPackageName(this)
        .setDataType(DataType.TYPE_STEP_COUNT_DELTA)
        .setStreamName("$TAG - step count")
        .setType(DataSource.TYPE_RAW)
        .build();

// For each data point, specify a start time, end time, and the
// data value -- in this case, 950 new steps.
int stepCountDelta = 950;
DataPoint dataPoint = DataPoint.builder(dataSource)
        .setField(Field.FIELD_STEPS, stepCountDelta)
        .setTimeInterval(startTime.toEpochSecond(), endTime.toEpochSecond(), TimeUnit.SECONDS)
        .build();

DataSet dataSet = DataSet.builder(dataSource)
        .add(dataPoint)
        .build();

创建 DataSet 实例后，请使用 HistoryClient.insertData 方法异步添加这些历史数据。

Kotlin

Fitness.getHistoryClient(this, GoogleSignIn.getAccountForExtension(this, fitnessOptions))
    .insertData(dataSet)
    .addOnSuccessListener {
        Log.i(TAG, "DataSet added successfully!")
    }
    .addOnFailureListener { e ->
        Log.w(TAG, "There was an error adding the DataSet", e)
    }

Java

Fitness.getHistoryClient(this, GoogleSignIn.getAccountForExtension(this, fitnessOptions))
        .insertData(dataSet)
        .addOnSuccessListener (unused ->
                Log.i(TAG, "DataSet added successfully!"))
        .addOnFailureListener(e ->
                Log.w(TAG, "There was an error adding the DataSet", e));
}

管理有冲突的数据点

每个 DataPoint 在应用的 DataSet 中，必须具有 startTime 和 endTime，后者用于定义 该DataSet内的唯一区间，DataPoint之间没有重叠 实例。

如果您的应用尝试插入与现有 DataPoint 冲突的新 DataPoint DataPoint 实例，系统会舍弃新的 DataPoint。要插入新的 DataPoint，请使用 HistoryClient.updateData 更新数据中介绍的方法。

如果数据点的时长与任何现有数据重叠，则无法插入该数据点 积分

图 1. insertData() 方法如何处理 与现有 DataPoint 冲突。

更新数据

Google 健身可让您的应用更新健康和健身数据 。要为新DataSet添加历史数据，或要添加新 与现有数据不冲突的 DataPoint 个实例 积分，请使用 HistoryApi.insertData 方法。

如需更新历史数据，请使用 HistoryClient.updateData 方法。这个 方法用于删除与 DataPoint 重叠的任何现有 DataPoint 实例 使用该方法添加的实例。

若要更新历史健康和健身数据，请先创建一个DataSet 实例：

Kotlin

// Declare that the historical data was collected during the past 50 minutes.
val endTime = LocalDateTime.now().atZone(ZoneId.systemDefault())
val startTime = endTime.minusMinutes(50)

// Create a data source
val dataSource  = DataSource.Builder()
    .setAppPackageName(this)
    .setDataType(DataType.TYPE_STEP_COUNT_DELTA)
    .setStreamName("$TAG - step count")
    .setType(DataSource.TYPE_RAW)
    .build()

// Create a data set
// For each data point, specify a start time, end time, and the
// data value -- in this case, 1000 new steps.
val stepCountDelta = 1000

val dataPoint = DataPoint.builder(dataSource)
    .setTimeInterval(startTime.toEpochSecond(), endTime.toEpochSecond(), TimeUnit.SECONDS)
    .setField(Field.FIELD_STEPS, stepCountDelta)
    .build()

val dataSet = DataSet.builder(dataSource)
    .add(dataPoint)
    .build()

Java

// Declare that the historical data was collected during the past 50 minutes.
ZonedDateTime endTime = LocalDateTime.now().atZone(ZoneId.systemDefault());
ZonedDateTime startTime = endTime.minusMinutes(50);

// Create a data source
DataSource dataSource = new DataSource.Builder()
        .setAppPackageName(this)
        .setDataType(DataType.TYPE_STEP_COUNT_DELTA)
        .setStreamName("$TAG - step count")
        .setType(DataSource.TYPE_RAW)
        .build();

// Create a data set
// For each data point, specify a start time, end time, and the
// data value -- in this case, 1000 new steps.
int stepCountDelta = 1000;

DataPoint dataPoint = DataPoint.builder(dataSource)
        .setTimeInterval(startTime.toEpochSecond(), endTime.toEpochSecond(), TimeUnit.SECONDS)
        .setField(Field.FIELD_STEPS, stepCountDelta)
        .build();

DataSet dataSet = DataSet.builder(dataSource)
        .add(dataPoint)
        .build();

然后，使用 DataUpdateRequest.Builder() 创建新的数据更新请求，以及 使用 HistoryClient.updateData 方法发出请求：

Kotlin

val request = DataUpdateRequest.Builder()
    .setDataSet(dataSet)
    .setTimeInterval(startTime.toEpochSecond(), endTime.toEpochSecond(), TimeUnit.SECONDS)
    .build()

Fitness.getHistoryClient(this, GoogleSignIn.getAccountForExtension(this, fitnessOptions))
    .updateData(request)
    .addOnSuccessListener {
        Log.i(TAG, "DataSet updated successfully!")
    }
    .addOnFailureListener { e ->
        Log.w(TAG, "There was an error updating the DataSet", e)
    }

Java

DataUpdateRequest request = new DataUpdateRequest.Builder()
        .setDataSet(dataSet)
        .setTimeInterval(startTime.toEpochSecond(), endTime.toEpochSecond(), TimeUnit.SECONDS)
        .build();

Fitness.getHistoryClient(this, GoogleSignIn.getAccountForExtension(this, fitnessOptions))
        .updateData(request)
        .addOnSuccessListener(unused ->
                Log.i(TAG, "DataSet updated successfully!"))
        .addOnFailureListener(e ->
                Log.w(TAG, "There was an error updating the DataSet", e));

删除数据

Google 健身允许您的应用删除健康和健身历史数据 。

要删除历史数据，请使用 HistoryClient.deleteData 方法：

Kotlin

// Declare that this code deletes step count information that was collected
// throughout the past day.
val endTime = LocalDateTime.now().atZone(ZoneId.systemDefault())
val startTime = endTime.minusDays(1)

// Create a delete request object, providing a data type and a time interval
val request = DataDeleteRequest.Builder()
    .setTimeInterval(startTime.toEpochSecond(), endTime.toEpochSecond(), TimeUnit.SECONDS)
    .addDataType(DataType.TYPE_STEP_COUNT_DELTA)
    .build()

// Invoke the History API with the HistoryClient object and delete request, and
// then specify a callback that will check the result.
Fitness.getHistoryClient(this, GoogleSignIn.getAccountForExtension(this, fitnessOptions))
    .deleteData(request)
    .addOnSuccessListener {
        Log.i(TAG, "Data deleted successfully!")
    }
    .addOnFailureListener { e ->
        Log.w(TAG, "There was an error with the deletion request", e)
    }

Java

// Declare that this code deletes step count information that was collected
// throughout the past day.
ZonedDateTime endTime = LocalDateTime.now().atZone(ZoneId.systemDefault());
ZonedDateTime startTime = endTime.minusDays(1);

// Create a delete request object, providing a data type and a time interval
DataDeleteRequest request = new DataDeleteRequest.Builder()
        .setTimeInterval(startTime.toEpochSecond(), endTime.toEpochSecond(), TimeUnit.SECONDS)
        .addDataType(DataType.TYPE_STEP_COUNT_DELTA)
        .build();

// Invoke the History API with the HistoryClient object and delete request, and
// then specify a callback that will check the result.
Fitness.getHistoryClient(this, GoogleSignIn.getAccountForExtension(this, fitnessOptions))
        .deleteData(request)
        .addOnSuccessListener (unused ->
                Log.i(TAG, "Data deleted successfully!"))
        .addOnFailureListener(e ->
        Log.w(TAG, "There was an error with the deletion request", e));

应用可以删除特定会话中的数据，或 删除所有数据。有关详情，请参阅 DataDeleteRequest。

注册以接收数据更新

您的应用可以通过向 SensorsClient。

对于频率较低且需手动统计的其他类型的数据， 将这些测量结果插入 Google 健身数据库。这些数据类型的示例包括身高、 例如举重有关详情，请参阅完整列表 受支持的数据类型。 如需注册以接收更新，请使用 HistoryClient.registerDataUpdateListener。

以下代码段可让应用在用户输入新的 权重值：

Kotlin

val intent = Intent(this, MyDataUpdateService::class.java)
val pendingIntent = PendingIntent.getService(this, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT)

val request = DataUpdateListenerRegistrationRequest.Builder()
    .setDataType(DataType.TYPE_WEIGHT)
    .setPendingIntent(pendingIntent)
    .build()

Fitness.getHistoryClient(this, GoogleSignIn.getAccountForExtension(this, fitnessOptions))
    .registerDataUpdateListener(request)
    .addOnSuccessListener {
        Log.i(TAG, "DataUpdateListener registered")
    }

Java

Intent intent = new Intent(this, MyDataUpdateService.class);
PendingIntent pendingIntent = PendingIntent.getService(this, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT)

DataUpdateListenerRegistrationRequest request = new DataUpdateListenerRegistrationRequest.Builder()
        .setDataType(DataType.TYPE_WEIGHT)
        .setPendingIntent(pendingIntent)
        .build();

Fitness.getHistoryClient(this, GoogleSignIn.getAccountForExtension(this, fitnessOptions))
        .registerDataUpdateListener(request)
        .addOnSuccessListener(unused ->
                Log.i(TAG, "DataUpdateListener registered"));

IntentService 可用于接收更新通知：

Kotlin

class MyDataUpdateService : IntentService("MyDataUpdateService") {
    override fun onHandleIntent(intent: Intent?) {
        val update = DataUpdateNotification.getDataUpdateNotification(intent)
        // Show the time interval over which the data points were collected.
        // To extract specific data values, in this case the user's weight,
        // use DataReadRequest.
        update?.apply {
            val start = getUpdateStartTime(TimeUnit.MILLISECONDS)
            val end = getUpdateEndTime(TimeUnit.MILLISECONDS)

            Log.i(TAG, "Data Update start: $start end: $end DataType: ${dataType.name}")
        }
    }
}

Java

public class MyDataUpdateService extends IntentService {

    public MyDataUpdateService(String name) {
        super("MyDataUpdateService");
    }

    @Override
    protected void onHandleIntent(@Nullable Intent intent) {
        if (intent != null) {
            DataUpdateNotification update = DataUpdateNotification.getDataUpdateNotification(intent);

            // Show the time interval over which the data points
            // were collected.
            // To extract specific data values, in this case the user's weight,
            // use DataReadRequest.
            if (update != null) {
                long start = update.getUpdateStartTime(TimeUnit.MILLISECONDS);
                long end = update.getUpdateEndTime(TimeUnit.MILLISECONDS);
            }

            Log.i(TAG, "Data Update start: $start end: $end DataType: ${dataType.name}");
        }
    }
}

必须在 AndroidManifest.xml 文件中声明 IntentService。