Accelerometer is used for detecting the changes in the position of the device in the three directions x, y and z. We can know the current position of the device relative to the ground. For testing this example, you'll need to run it on a device and to doesn't work on simulator.
Accelerometer – Steps Involved
Step 1. Create a simple View based application.
Step 2. Add three labels in ViewController.xib and create ibOutlets naming them as xlabel, ylabel, and zlabel.
Step 3. Update ViewController.h as follows −
#import
@interface ViewController : UIViewController<UIAccelerometerDelegate>
{
IBOutlet UILabel *xlabel;
IBOutlet UILabel *ylabel;
IBOutlet UILabel *zlabel;
}
@end
Step 4. Update ViewController.m as follows −
#import "ViewController.h"
@interface ViewController ()
@end
@implementation ViewController
- (void)viewDidLoad
{
[super viewDidLoad];
[[UIAccelerometer sharedAccelerometer]setDelegate:self];
//Do any additional setup after loading the view,typically from a nib
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
- (void)accelerometer:(UIAccelerometer *)accelerometer didAccelerate:
(UIAcceleration *)acceleration{
[xlabel setText:[NSString stringWithFormat:@"%f",acceleration.x]];
[ylabel setText:[NSString stringWithFormat:@"%f",acceleration.y]];
[zlabel setText:[NSString stringWithFormat:@"%f",acceleration.z]];
}
@end
Output
When we run the application in iPhone device, we'll get the following output −
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