ประเภทข้อมูลที่กำหนดเอง

val request = DataTypeCreateRequest.Builder()
    // The prefix of your data type name must match your app's package name
    .setName("com.packagename.appname.custom_data_type") // Add some custom fields, both int and float
    .addField("field1", Field.FORMAT_INT32)
    .addField("field2", Field.FORMAT_FLOAT)
    // Add some common fields
    .addField(Field.FIELD_ACTIVITY)
    .build()

Fitness.getConfigClient(this, account)
    .createCustomDataType(request)
    .addOnSuccessListener { dataType ->
        // Use this custom data type to insert data into your app.
        Log.d(TAG, "Created data type: ${dataType.name}")
    }

POST

https://www.googleapis.com/fitness/v1/users/me/dataSources

{
  "dataStreamName": "FlexibilityMeasure",
  "type": "raw",
  "application": {
    "detailsUrl": "http://recoveryapps.com",
    "name": "Stretch Flex",
    "version": "1"
  },
  "dataType": {
    "name": "com.recoveryapps.stretchflex.flexibility",
    "field": [
     {
      "name": "ankle_range_degrees",
      "format": "integer"
     },
     {
      "name": "wrist_range_degrees",
      "format": "integer",
      "optional": true
     }
    ]
   }
}

Fitness.getConfigClient(this, account)
    .readDataType("com.packagename.appname.custom_data_type")
    .addOnSuccessListener { dataType ->
        // Use this custom data type to insert data into your app.
        Log.d(TAG, "Retrieved data type: ${dataType.name}")
    }