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com.samsung.android.sdk.healthdata

Class HealthDataUtil


  • public class HealthDataUtil
extends Object
    This class provides useful utilities.

    HealthDataUtil makes compressed JSON conversion easy.
    Suppose LiveData class that defines as the HealthConstants.Exercise.LIVE_DATA's JSON format. 

       public class LiveData {
           long start_time = 0L;
           float heart_rate = 0.f;
           float cadence = 0.f;
           float count = 0.f;
           float power = 0.f;
           float speed = 0.f;
 }

    Make sure to add GSON as a Maven dependency to your project: 

       dependencies {
     ...
     implementation "com.google.code.gson:gson:2.7"
 }

    Converting data to compressed JSON

    LIVE_DATA can be retrieved as the example below. 

       public byte[] createLiveData(List<LiveData> liveDataList) {
           // convert data class to JSON string
          byte[] zip = HealthDataUtil.getJsonBlob(liveDataList);
          return zip;
 }

    Getting data from compressed JSON

    You can read detailed information of exercise data after decompressing them. 

       public List<LiveData> getLiveData(byte[] zip) {
           // decompress ZIP
           List<LiveData> liveDataList = HealthDataUtil.getStructuredDataList(zip, LiveData.class);
           return liveDataList;
 }

    Since:
    1.3.0

    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method and Description
      static <T> byte[] getJsonBlob(List<T> structuredDataList)
      Converts a given input List object to the raw data which is formatted with JSON and compressed.
      static <T> byte[] getJsonBlob(T structuredData)
      Converts a given input object to the raw data which is formatted with JSON and compressed.
      static <T> T getStructuredData(byte[] jsonBlob, Class<T> clazz)
      Converts a given raw data to the particular class type.
      static <T> List<T> getStructuredDataList(byte[] jsonBlob, Class<T> clazz)
      Converts a given raw data to the List of particular class type.

    • Method Detail

      • getJsonBlob

        public static <T> byte[] getJsonBlob(T structuredData)
        Converts a given input object to the raw data which is formatted with JSON and compressed.
        Parameters:
        structuredData - An object of a specified class
        Returns:
        Compressed BLOB data with the JSON format
        Throws:
        IllegalStateException - If an untreatable error has occurred

      • getJsonBlob

        public static <T> byte[] getJsonBlob(List<T> structuredDataList)
        Converts a given input List object to the raw data which is formatted with JSON and compressed.
        Parameters:
        structuredDataList - An object for which JSON blob is to be created
        Returns:
        Compressed BLOB data with the JSON format
        Throws:
        IllegalStateException - If an untreatable error has occurred

      • getStructuredData

        public static <T> T getStructuredData(byte[] jsonBlob,
                                      Class<T> clazz)
        Converts a given raw data to the particular class type.
        Parameters:
        jsonBlob - Compressed BLOB data which is formatted with JSON and compressed
        clazz - A class object of the destination instance
        Returns:
        A converted T type object from the compressed BLOB data
        Throws:
        IllegalArgumentException - If JSON is invalid representation for an object type
        IllegalStateException - If an untreatable error has occurred

      • getStructuredDataList

        public static <T> List<T> getStructuredDataList(byte[] jsonBlob,
                                                Class<T> clazz)
        Converts a given raw data to the List of particular class type.
        Parameters:
        jsonBlob - Compressed BLOB data which is formatted with JSON and compressed
        clazz - A class object of the destination instance
        Returns:
        An converted T type object from the compressed BLOB data
        Throws:
        IllegalArgumentException - If JSON is invalid representation for an object type
        IllegalStateException - If an untreatable error has occurred