The SDK's Health Data provides a SimpleHealth sample application to read the today's step count.
Prerequisites to run SimpleHealth are:
Prepare an Android device that supports Android 6.0 Marshmallow (API level 23) or above.
(Samsung and non-Samsung devices are available both.)
Add the SimpleHealth app's dev access code developer mode.
Import SimpleHealth with Android Studio (or Eclipse).
Run SimpleHealth on the device.
SimpleHealth demonstrates how to use Health Data's APIs for retrieving the today's step count with HealthConstants. StepCount data type and HealthDataObserver.
Especially, the health data store connection and exception handling would be helpful to your application to prepare unexpected error.
SimpleHealth's sources and resources are: