sensor

I have a samsung galaxy s and i have made an application that make a list of sensor in the phone. That program show me many sensor, but my question is on two of them: MS-3C Magnetic sensor -->type:2 MS-3C Orientation sensor -->type:3 why it say that they are two different sensor? in the sheet of yamaha http://www.yamaha.co.jp/english/product/lsi/magnetic_sensor/ it seems to be a single sensor. Why android report it as two different sensor? it use the same chip to give me two type of data? Sorry for my english Orientation sensor is a virtual sensor that uses the other actual sensors (such as

I'm a beginner in Android game Development, and I developing a small Game. I am facing some difficulties with the Motion Sensor: Accelerometer. this game is in Landscape mode. I want if my phone tilts in right, my character also goes right. ( same thing for left ) And when I stop tilting Character in the game should stop moving. But i don't understand really good the operation of the accelerometer, here is my code: @Override public void onSensorChanged(SensorEvent event) { synchronized (this) { long penchement = (long) (event.values[1]- 0.5); if(penchement>0){ if(penchement>lastUpdate)

I am creating an application named CompassApp. I have created two classes named Compass.java and Rose.java. This application has been created from a tutorial described in a website and this uses the deprecated version of SensorListener. The class Compass.java is using this deprecated version. The app worked fine when I used the deprecated version. Then I thought to convert my app into the current version that is SensorEventListener. But the rotation of the compass stopped! I'm stuck and don't know what to do. Please help me. Compass.java with deprecated SensorListener interface public class

Is there a mandatory list for hardware on Android devices (e.g. magnetic field, distance)? If not, which one are common? These things are defined in the Android Compatibility Definition Document (CDD) . Here is the current one. Check out the hardware-sensors section [7.3.]. As far as I can see all sensors are optional. Most devices are equipped with the following sensors: GPS Accelerometer Proximity sensor Magnetic field Light Gravity (from an API viewpoint , some might be the same on a hardware basis) 来源： https://stackoverflow.com/questions/7402062/android-mandatory-sensors

i have come across this code which uses the phones sensors to get the orientation of the device in degrees along the 3 axes... this value is calculated from a 4x4 matrix called rotation matrix.. so i was wondering what kind of data is stored in the rotation matrix ? the code is similar to the one in this example Android: Problems calculating the Orientation of the Device Stochastically The Wikipedia article about rotation matrices is reasonable. Basically, the rotation matrix tells you how to map a point in one co-ordinate system to a point in a different co-ordinate system. In the context of

I'm a relatively new user to swift and now, I need to take advantage of the proximity sensor of an iPhone. I don't matter the distance, but I want to know when something is near the iPhone. So I found this code in Objective-C that worked, but I need it in Swift. I have tried some ways, but any worked. So here is the code I need: - (void) activateProximitySensor { UIDevice *device = [UIDevice currentDevice]; device.proximityMonitoringEnabled = YES; if (device.proximityMonitoringEnabled == YES) { [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(proximityChanged:) name:@