2014/10/16 上午 08:26:50

android Programming Glossary: type_accelerometer

http://stackoverflow.com/questions/16392142/android-accelerometer-profiling

simple Activity which is a SensorEventListener for Sensor.TYPE_ACCELEROMETER . In my onSensorChanged SensorEvent event i just pick the values.. I'd make the following observations In addition to Sensor.TYPE_ACCELEROMETER Android also has Sensor.TYPE_GRAVITY and Sensor.TYPE_LINEAR_ACCELERATION.. the values of all three then you notice that the values of TYPE_ACCELEROMETER are always equal to the sum of the values of TYPE_GRAVITY and..

Using getRotationMatrix and getOrientation in Android 2.1

http://stackoverflow.com/questions/2963705/using-getrotationmatrix-and-getorientation-in-android-2-1

respectively. switch event.sensor.getType case Sensor.TYPE_ACCELEROMETER accelerometerValues event.values.clone case Sensor.TYPE_MAGNETIC_FIELD.. is incorrect switch event.sensor.getType case Sensor.TYPE_ACCELEROMETER accelerometerValues event.values.clone case Sensor.TYPE_MAGNETIC_FIELD.. true break default break If your sensor event is TYPE_ACCELEROMETER the values from the event will be cloned to both accelerometerValues..

Different values between sensors TYPE_ACCELEROMETER/TYPE_MAGNETIC_FIELD and TYPE_ORIENTATION

http://stackoverflow.com/questions/4174389/different-values-between-sensors-type-accelerometer-type-magnetic-field-and-type

values between sensors TYPE_ACCELEROMETER TYPE_MAGNETIC_FIELD and TYPE_ORIENTATION There are 2 ways to.. SensorEvent event switch event.sensor.getType case Sensor.TYPE_ACCELEROMETER aValues event.values.clone break case Sensor.TYPE_MAGNETIC_FIELD.. Whenever possible you should use TYPE_GRAVITY rather than TYPE_ACCELEROMETER as the input to getRotationMatrix . share improve this answer..

Android TYPE_LINEAR_ACCELERATION sensor - what does it show?

http://stackoverflow.com/questions/7858759/android-type-linear-acceleration-sensor-what-does-it-show

three times less than real speed. Changing Sensor type to TYPE_ACCELEROMETER calibrating and using same formula to calculate speed i get.. forum # topic android developers GOm9yhTFZaM TYPE_ACCELEROMETER uses the accelerometer and only the accelerometer. It returns..

Android Accelerometer Profiling

http://stackoverflow.com/questions/16392142/android-accelerometer-profiling

Accelerometer Profiling I have written a simple Activity which is a SensorEventListener for Sensor.TYPE_ACCELEROMETER . In my onSensorChanged SensorEvent event i just pick the values in X Y Z format and write them on to a file. Added to this.. been able to detect the three activities that you mentioned. I'd make the following observations In addition to Sensor.TYPE_ACCELEROMETER Android also has Sensor.TYPE_GRAVITY and Sensor.TYPE_LINEAR_ACCELERATION . If you log the values of all three then you notice.. and Sensor.TYPE_LINEAR_ACCELERATION . If you log the values of all three then you notice that the values of TYPE_ACCELEROMETER are always equal to the sum of the values of TYPE_GRAVITY and TYPE_LINEAR_ACCELERATION. The onSensorChanged method first..

Using getRotationMatrix and getOrientation in Android 2.1

http://stackoverflow.com/questions/2963705/using-getrotationmatrix-and-getorientation-in-android-2-1

or roll. It outputs 0.0 0.0 0.0 for the last three textviews respectively. switch event.sensor.getType case Sensor.TYPE_ACCELEROMETER accelerometerValues event.values.clone case Sensor.TYPE_MAGNETIC_FIELD geomagneticMatrix event.values.clone sensorReady.. solved this already but to me it looks like your switch statement is incorrect switch event.sensor.getType case Sensor.TYPE_ACCELEROMETER accelerometerValues event.values.clone case Sensor.TYPE_MAGNETIC_FIELD geomagneticMatrix event.values.clone sensorReady.. geomagneticMatrix event.values.clone sensorReady true break default break If your sensor event is TYPE_ACCELEROMETER the values from the event will be cloned to both accelerometerValues and geomagneticMatrix and sensorReady will be set to..

Different values between sensors TYPE_ACCELEROMETER/TYPE_MAGNETIC_FIELD and TYPE_ORIENTATION

http://stackoverflow.com/questions/4174389/different-values-between-sensors-type-accelerometer-type-magnetic-field-and-type

values between sensors TYPE_ACCELEROMETER TYPE_MAGNETIC_FIELD and TYPE_ORIENTATION There are 2 ways to get the 3 rotation values azimuth pitch roll . One is registering.. new SensorEventListener public void onSensorChanged SensorEvent event switch event.sensor.getType case Sensor.TYPE_ACCELEROMETER aValues event.values.clone break case Sensor.TYPE_MAGNETIC_FIELD mValues event.values.clone break float R new float..

Android TYPE_LINEAR_ACCELERATION sensor - what does it show?

http://stackoverflow.com/questions/7858759/android-type-linear-acceleration-sensor-what-does-it-show

y z z t time of interval at the end i get very little speed three times less than real speed. Changing Sensor type to TYPE_ACCELEROMETER calibrating and using same formula to calculate speed i get good results much close to reality. So the question is what.. i found a very usefull answer that explain it https groups.google.com forum # topic android developers GOm9yhTFZaM TYPE_ACCELEROMETER uses the accelerometer and only the accelerometer. It returns raw accelerometer events with minimal or no processing at..