Created
August 29, 2016 20:30
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public Observable<SensorEvent> naiveObserveSensorChanged(final SensorManager sensorManager, final Sensor sensor, final int samplingPreiodUs) { | |
return Observable.create(new Observable.OnSubscribe<SensorEvent>() { | |
@Override | |
public void call(final Subscriber<? super SensorEvent> subscriber) { | |
final SensorEventListener sensorEventListener = new SensorEventListener() { | |
@Override | |
public void onSensorChanged(SensorEvent event) { | |
// (3) - checking for subscribers before emitting values | |
if (!subscriber.isUnsubscribed()) { | |
subscriber.onNext(event); | |
} | |
} | |
@Override | |
public void onAccuracyChanged(Sensor sensor, int accuracy) { | |
// ignored for this example | |
} | |
}; | |
// (1) - unregistering listener when unsubscribed | |
subscriber.add(Subscriptions.create(new Action0() { | |
@Override | |
public void call() { | |
try { | |
sensorManager.unregisterListener(sensorEventListener, sensor); | |
} catch (Exception ex) { | |
// (3) - checking for subscribers before emitting values | |
if (!subscriber.isUnsubscribed()) { | |
// (2) - reporting exceptions via onError() | |
subscriber.onError(ex); | |
} | |
} | |
} | |
})); | |
sensorManager.registerListener(sensorEventListener, sensor, samplingPreiodUs); | |
} | |
}); | |
} |
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