Write Blood Glucose Data

Your app can record blood glucose data by writing to the com.google.blood_glucose data type. In this data type, each data point represents a single instantaneous blood glucose reading. The data point contains fields for the blood glucose concentration, temporal relationships to meals and sleep, and the source of the specimen which was measured. All fields except for blood glucose concentration are optional.

The blood glucose concentration is measured in mmol/L (1 mmol/L is equivalent to 18 mg/dL).
If specified, temporal relation to meal must have one of the values listed in FIELD_TEMPORAL_RELATION_TO_MEAL.
Meal type must have one of the values listed in FIELD_MEAL_TYPE. If the meal type is not known, use MEAL_TYPE_UNKNOWN.
If specified, temporal relation to sleep must have one of the values listed in FIELD_TEMPORAL_RELATION_TO_SLEEP.
If specified, blood glucose specimen source must have one of the values listed in FIELD_BLOOD_GLUCOSE_SPECIMEN_SOURCE.

To write a blood glucose data point, create a new DataSource of TYPE_BLOOD_GLUCOSE, as shown in the following example.

DataSource bloodGlucoseSource = new DataSource.Builder()
    .setDataType(TYPE_BLOOD_GLUCOSE)
    ...
    .build();

DataPoint bloodGlucose = DataPoint.create(bloodGlucoseSource);
bloodGlucose.setTimestamp(now.getMillis(), MILLISECONDS);
bloodGlucose.getValue(FIELD_BLOOD_GLUCOSE_LEVEL).setFloat(5.0f); // 90 mg/dL
bloodGlucose.getValue(FIELD_TEMPORAL_RELATION_TO_MEAL)
    .setInt(FIELD_TEMPORAL_RELATION_TO_MEAL_BEFORE_BREAKFAST);
bloodGlucose.getValue(FIELD_TEMPORAL_RELATION_TO_SLEEP)
    .setInt(TEMPORAL_RELATION_TO_SLEEP_ON_WAKING);
bloodGlucose.getValue(FIELD_BLOOD_GLUCOSE_SPECIMEN_SOURCE)
    .setInt(BLOOD_GLUCOSE_SPECIMEN_SOURCE_CAPILLARY_BLOOD);

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