IOS development detection device shake

IOS development detection device shake

Two Methods for device shaking detection are described below:

Method 1

First, add

-(BOOL) application :( UIApplication *) application didfinishlaunchingwitexceptions :( NSDictionary *) launchOptions

{

// Override point for customization after application launch

// Add detection shaking

Application. applicationSupportsShakeToEdit = YES;

}

Add

// Detect mobile phone shake

-(BOOL) canBecomeFirstResponder

{

Return YES;

}

-(Void) viewWillDisappear :( BOOL) animated {

[Self resignFirstResponder];

[Super viewWillDisappear: animated];

}

-(Void) motionEnded :( UIEventSubtype) motion withEvent :( UIEvent *) event

{

If (motion = UIEventSubtypeMotionShake)

{

UIAlertView * alertView = [[UIAlertView alloc] initWithTitle: @ "prompt" message: @ "Congratulations! You get a 100-5 discount coupon" delegate: self cancelButtonTitle: @ "close" otherButtonTitles: nil

[AlertView show];

NSLog (@ "shaking detected ");

}

}

-(Void) prarGotProblem :( NSString *) problemTitle withDetails :( NSString *) problemDetails

{

[Self alert: problemTitle withDetails: problemDetails];

}

Method 2 Use CoreMotion

Introduce the required header file

# Import

The viewDidLoad to be detected initializes CMMotionManager and starts an NSTimer to detect changes in the X, Y, and Z axes.

-(Void) viewDidLoad {

[SuperviewDidLoad];

// Do any additional setup after loading the view.

NSTimer * AutoTimer = [NSTimerscheduledTimerWithTimeInterval: 1.0/60.0 target: selfselector: @ selector (autoChange) userInfo: nilrepeats: YES];

_ Manager = [[CMMotionManageralloc] init];

_ Manager. accelerometerUpdateInterval = 1.0/60.0;

[_ ManagerstartAccelerometerUpdates];

}

-(Void) autoChange

{

// Adjust x y z as needed

If (fabsf (_ manager. accelerometerData. acceleration. x)> 1.0 | fabsf (_ manager. accelerometerData. acceleration. y)> 1.2 | fabsf (_ manager. accelerometerData. acceleration. z)> 0.5)

{

NSLog (@ "I am shaking ..... ");

}

}

Note: method 1 is called only when the shaking is large, and method 2 can be adjusted as needed.