CODEWITHSUNDEEP
compass-geolocation
Jerry
Jerry

Reputation: 176

CoreMotion framework

I recently was doing a compass, to involve CoreMotion framework, but I checked for a long time did not find information on how to implement this framework the effect of the compass, hoping to get everyone's help.

Upvotes: 0

Views: 775

Answers (2)

user227471
user227471

Reputation: 1

My "Helloworld" CoreMotion:

1) Add CoreMotion.framework

2) in .h file: 

#import <CoreMotion/CoreMotion.h>

3) in .m file:

CMMotionManager *myMotionManager= [[CMMotionManager alloc] init];
myMotionManager.deviceMotionUpdateInterval = 1/60;
[myMotionManager startDeviceMotionUpdatesUsingReferenceFrame:CMAttitudeReferenceFrameXMagneticNorthZVertical  toQueue:[NSOperationQueue currentQueue] withHandler:^(CMDeviceMotion *motion, NSError *error) {
     double x = myMotionManager.deviceMotion.magneticField.field.x;
     double y = myMotionManager.deviceMotion.magneticField.field.y;
     double z = myMotionManager.deviceMotion.magneticField.field.z;
    NSLog(@"Strength of Earth's magnetic field= %8.2f",sqrt(x*x+y*y+z*z));
    myLabel.text = [NSString stringWithFormat:@"%8.2f", sqrt(x*x+y*y+z*z)];
}];

Upvotes: 0

Jano
Jano

Reputation: 63667

Upvotes: 2

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