http://android-developers.blogspot.com/2010/09/one-screen-turn-deserves-another.html
On Wed, Jun 29, 2011 at 10:22 AM, Mike D mdavie...@gmail.com wrote:
Hi guys,
I've been playing around with orientation (especially in relation to
the real world so finding north is very useful) and started with the
google api example.
While investigating how to change that so it worked while the phone
was in landscape I found out that I was using depricated components.
So now I'm using the acceloromiter and the magnetic field to find the
orientation which I found in a mixture of examples on the web.
This again works great while in portrain but landscape gives weird
answers?
I've done some experiments with looking at the different between
landscape and portrait but can't seem to find out what's going on and
how to correct the app to allow me to switch between portrain and
landscape on the fly.
I don't think it's quite as simple and minusing 90 degrees but I'm
willing to be wrong.
Here's my SensorListener onSensorChanged
int type = event.sensor.getType();
float[] data;
if (type == Sensor.TYPE_ACCELEROMETER) {
data = mGData;
} else if (type == Sensor.TYPE_MAGNETIC_FIELD) {
data = mMData;
}
for (int i=0 ; i3 ; i++){
data[i] = event.values[i];
}
SensorManager.getRotationMatrix(mR, mI, mGData,
mMData);
SensorManager.getOrientation(mR, mOrientation);
float incl = SensorManager.getInclination(mI);
String endl = System.getProperty(line.separator);
if (mCount++ 50) {
final float rad2deg = (float)(180.0f/Math.PI);
mCount = 0;
txZ.setText(Azimuth: +
(int)(mOrientation[0]*rad2deg) +
degrees + endl +
Pitch: +
(int)(mOrientation[1]*rad2deg) + degrees + endl +
Roll: +
(int)(mOrientation[2]*rad2deg) + degrees + endl +
incl: + (int)(incl*rad2deg));
}
Many Thanks
Michael
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