Step Detector and Step Counter Sensors on Android
时间 2014-03-31 11:56:00 Tech Droid 原文 http://techdroid.kbeanie.com/2014/03/step-detector-and-step-counter-sensors.html
Android KitKat has added a few more hardware sensors to it‘s API list. Step Sensors are one of them, which looks very promising. Although, not a lot of phones yet have these Step Sensors, in the future, this would gradually become a standard I think. Currently, Nexus 5 has them.
Let‘s see how we can interact with these sensors. Basically, there are 2 sensors.
- Step Counter:
This keeps a count of the number of steps that you have taken. The
counter is only reset when you re-boot the device, else, for every step
you take (or the phone thinks you took, you counts up). - Step Detector:
This sensor just detects when you take a step. That‘s it.
The example project shows you how to initialize and setup the SensorManager
and respond to events from the Sensors.
// Step Counter
sManager.registerListener(new SensorEventListener() {
@Override
public void onSensorChanged(SensorEvent event) {
float steps = event.values[0];
textViewStepCounter.setText((int) steps + "");
}
@Override
public void onAccuracyChanged(Sensor sensor, int accuracy) {
}
}, sManager.getDefaultSensor(Sensor.TYPE_STEP_COUNTER),
SensorManager.SENSOR_DELAY_UI);
// Step Detector
sManager.registerListener(new SensorEventListener() {
@Override
public void onSensorChanged(SensorEvent event) {
// Time is in nanoseconds, convert to millis
timestamp = event.timestamp / 1000000;
}
@Override
public void onAccuracyChanged(Sensor sensor, int accuracy) {
}
}, sManager.getDefaultSensor(Sensor.TYPE_STEP_DETECTOR),
SensorManager.SENSOR_DELAY_UI);
No special permissions are required.
Step Detector and Step Counter Sensors on Android