diff options
Diffstat (limited to 'main/src')
| -rw-r--r-- | main/src/cgeo/geocaching/sensors/RotationProvider.java | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/main/src/cgeo/geocaching/sensors/RotationProvider.java b/main/src/cgeo/geocaching/sensors/RotationProvider.java index 131b9b8..fc434bf 100644 --- a/main/src/cgeo/geocaching/sensors/RotationProvider.java +++ b/main/src/cgeo/geocaching/sensors/RotationProvider.java @@ -1,10 +1,12 @@ package cgeo.geocaching.sensors; +import cgeo.geocaching.settings.Settings; import cgeo.geocaching.utils.Log; import cgeo.geocaching.utils.RxUtils.LooperCallbacks; import rx.Observable; +import android.annotation.TargetApi; import android.content.Context; import android.hardware.Sensor; import android.hardware.SensorEvent; @@ -18,13 +20,22 @@ public class RotationProvider extends LooperCallbacks<Float> implements SensorEv private final float[] rotationMatrix = new float[16]; private final float[] orientation = new float[4]; + @TargetApi(19) protected RotationProvider(final Context context) { sensorManager = (SensorManager) context.getSystemService(Context.SENSOR_SERVICE); - rotationSensor = sensorManager.getDefaultSensor(Sensor.TYPE_ROTATION_VECTOR); - if (rotationSensor != null) { - Log.d("RotationProvider: sensor found"); + // The geomagnetic rotation vector introduced in Android 4.4 (API 19) requires less power. Favour it + // even if it is more sensible to noise in low-power settings. + final Sensor sensor = sensorManager.getDefaultSensor(Sensor.TYPE_GEOMAGNETIC_ROTATION_VECTOR); + if (sensor != null && Settings.useLowPowerMode()) { + rotationSensor = sensor; + Log.d("RotationProvider: geomagnetic (low-power) sensor found"); } else { - Log.w("RotationProvider: no rotation sensor on this device"); + rotationSensor = sensorManager.getDefaultSensor(Sensor.TYPE_ROTATION_VECTOR); + if (rotationSensor != null) { + Log.d("RotationProvider: sensor found"); + } else { + Log.w("RotationProvider: no rotation sensor on this device"); + } } } |