Create a Fitness API client

This example shows how to create a Fitness API client.

Create the API client as follows:

1. Create a FitnessOptions instance, declaring the data types and access type (read and/or write) your app needs:

   val fitnessOptions = FitnessOptions.builder()
       .addDataType(DataType.TYPE_STEP_COUNT_DELTA, FitnessOptions.ACCESS_READ)
       .addDataType(DataType.AGGREGATE_STEP_COUNT_DELTA, FitnessOptions.ACCESS_READ)
       .build()
   

2. Get an instance of the Account object to use with the API:

   val account = GoogleSignIn.getAccountForExtension(this, fitnessOptions)
   

3. Check if the user has previously granted the necessary data access, and if not, initiate the authorization flow:

   if (!GoogleSignIn.hasPermissions(account, fitnessOptions)) {
       GoogleSignIn.requestPermissions(
           this, // your activity
           GOOGLE_FIT_PERMISSIONS_REQUEST_CODE, // e.g. 1
           account,
           fitnessOptions)
   } else {
       accessGoogleFit()
   }
   

4. If the authorization flow is required, handle the user's response:

   override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
       super.onActivityResult(requestCode, resultCode, data)
       when (resultCode) {
           Activity.RESULT_OK -> when (requestCode) {
               GOOGLE_FIT_PERMISSIONS_REQUEST_CODE -> accessGoogleFit()
               else -> {
                   // Result wasn't from Google Fit
               }
           }
           else -> {
               // Permission not granted
           }
       }
   }
   

5. After the user has authorized access to the data requested, create a fitness client (for example, a HistoryClient to read and/or write historic fitness data) based on your app's purpose and needs:

   private fun accessGoogleFit() {
       val end = LocalDateTime.now()
       val start = end.minusYears(1)
       val endSeconds = end.atZone(ZoneId.systemDefault()).toEpochSecond()
       val startSeconds = start.atZone(ZoneId.systemDefault()).toEpochSecond()
   
       val readRequest = DataReadRequest.Builder()
           .aggregate(DataType.AGGREGATE_STEP_COUNT_DELTA)
           .setTimeRange(startSeconds, endSeconds, TimeUnit.SECONDS)
           .bucketByTime(1, TimeUnit.DAYS)
           .build()
       val account = GoogleSignIn.getAccountForExtension(this, fitnessOptions)
       Fitness.getHistoryClient(this, account)
           .readData(readRequest)
           .addOnSuccessListener({ response ->
               // Use response data here
               Log.i(TAG, "OnSuccess()")
           })
           .addOnFailureListener({ e -> Log.d(TAG, "OnFailure()", e) })
   }