compass-geolocation

Is it possible to use the native compass that iOS has within my own application? Or do I need to draw and animate my own compass? Keller There is no native compass UIView . In order to use the magnetometer, you'll have to use CoreLocation and the following delegate method: - (void) locationManager:(CLLocationManager *)manager didUpdateHeading:(CLHeading *)newHeading to rotate a UIView to point North (bearingView is a UIImageView): float heading = newHeading.magneticHeading; //in degrees float headingDegrees = (heading*M_PI/180); //assuming needle points to top of iphone. convert to radians

i'am trying to build a simple Augmented Reality App, so I start working with sensor Data. According to this thread ( Android compass example ) and example ( http://www.codingforandroid.com/2011/01/using-orientation-sensors-simple.html ), the calculation of the orientation using the Sensor.TYPE_ACCELEROMETER and Sensor.TYPE_MAGNETIC_FIELD doesn't really fit. So I'm not able to get "good" values. The azimut values doesn't make any sense at all, so if I just move the Phone upside the value changes extremly. Even if I just rotate the phone, the values doesn't represent the phones orientation. Has

I'm working with android sensor data. My application use SensorManager.getRotationMatrixFromVector( mRotationMatrix , event.values); and it has been working well until this morning, when the rotation matrix started to send a lot of noise data (Change N to W in a second). It's not a problem with my code, because on friday was working and no changes have been done. I have used a compass app from the market, and the compass is giving random data. I have tested my app on another tablet, and it is working well. Does someone know why is this happening? A problem with the sensor? Does it need a

I'm searching for a compass example for Android. All I need to do is to get the correct bearing (in portrait & landscape mode). I already found several samples, some use only Sensor.TYPE_ORIENTATION , some use a combination of Sensor.TYPE_ACCELEROMETER & Sensor.TYPE_MAGNETIC_FIELD . Which is the correct & common way to get the bearing for let's say Android 1.6 - 4.0? Dan Sensor.TYPE_ORIENTATION is deprecated. The documentation says you should use SensorManager.getOrientation() instead. So you should read from Sensor.TYPE_ACCELEROMETER as well as from Sensor.TYPE_MAGNETIC_FIELD , and then call

Im creating an application where i need to position a ImageView depending on the Orientation of the device. I use the values from a MagneticField and Accelerometer Sensors to calculate the device orientation with SensorManager.getRotationMatrix(rotationMatrix, null, accelerometerValues, magneticFieldValues) SensorManager.getOrientation(rotationMatrix, values); double degrees = Math.toDegrees(values[0]); My problem is that the positioning of the ImageView is very sensitive to changes in the orientation. Making the imageview constantly jumping around the screen. (because the degrees change) I

I am new in Android and i want to get direction according to my camera. How can I get direction information according to my camera? Could you give an idea for this? TYPE_ORIENTATION is deprecated We cannot use the Orientation Sensor anymore, we can use the Magnetic Field Sensor and Accelerometer Sensors in tandem to get equivalent functionality. It's more work but it does allow to continue to use a callback to handle orientation changes. Here is a compass sample : http://www.codingforandroid.com/2011/01/using-orientation-sensors-simple.html Conversion from accelerometer and magnetic field to

I'm trying to implement an arrow that uses the orientation sensor in order to point towards a specific location. Google Places implements this arrow in a ListView for each place it finds. I've managed to get the azimuth, but given a location, I don't know how to proceed to calculate the angle I need. Moreover, I need to make the conversions from real north and magnetic north. Does anybody have an example of such implementation? Thanks in advance. I solved it. float azimuth = // get azimuth from the orientation sensor (it's quite simple) Location currentLoc = // get location from GPS or network

I have been working on a small compass app the past couple of days, and have gotten the code up and running, but it seems that the compass reading is not accurate. After calibrating both phones, my first test that i found this in what that i simply held the phone against and flat surface looked at the reading then flipped it horizontally and put it against the same flat surface (a 180* turn) and the value did not change 180* it was closer to 240*. I then tested the reading vs a compass, at times the reading seemed to be close but at other points it was more than 50* off. I even tried to put my

my android application shows the direction of a particular place in the world and therefore in needs to get the compass degree. This is the code I've been using to calculate the degrees: public void getDirection() { mySensorManager = (SensorManager)getSystemService(Context.SENSOR_SERVICE); List<Sensor> mySensors = mySensorManager.getSensorList(Sensor.TYPE_ORIENTATION); if(mySensors.size() > 0){ mySensorManager.registerListener(mySensorEventListener, mySensors.get(0), SensorManager.SENSOR_DELAY_UI); } else{ TextView alert = (TextView)findViewById(R.id.instruct); alert.setText(getString(R.string