Shake window when user enters wrong password from code

Question

when we enter the wrong password in a program that needs a password in OSX, the window is shaking, how can I implement it in my program?

Answer 1

use the code below if the user enters an incorrect password

static int numberOfShakes = 8; static float durationOfShake = 0.5f; static float vigourOfShake = 0.05f; CGRect frame=[self.view.window frame]; CAKeyframeAnimation *shakeAnimation = [CAKeyframeAnimation animation]; CGMutablePathRef shakePath = CGPathCreateMutable(); CGPathMoveToPoint(shakePath, NULL, NSMinX(frame), NSMinY(frame)); int index; for (index = 0; index < numberOfShakes; ++index) { CGPathAddLineToPoint(shakePath, NULL, NSMinX(frame) - frame.size.width * vigourOfShake, NSMinY(frame)); CGPathAddLineToPoint(shakePath, NULL, NSMinX(frame) + frame.size.width * vigourOfShake, NSMinY(frame)); } CGPathCloseSubpath(shakePath); shakeAnimation.path = shakePath; shakeAnimation.duration = durationOfShake; [self.view.window setAnimations:[NSDictionary dictionaryWithObject: shakeAnimation forKey:@"frameOrigin"]]; [[self.view.window animator] setFrameOrigin:[self.view.window frame].origin]; 

Answer 2

Here is @SajjadZare's answer in Swift:

Swift 2.0:

  let numberOfShakes:Int = 8 let durationOfShake:Float = 0.5 let vigourOfShake:Float = 0.05 let frame:CGRect = (self.view.window?.frame)! let shakeAnimation = CAKeyframeAnimation() let shakePath = CGPathCreateMutable() CGPathMoveToPoint(shakePath, nil, NSMinX(frame), NSMinY(frame)) for _ in 1...numberOfShakes { CGPathAddLineToPoint(shakePath, nil, NSMinX(frame) - frame.size.width * CGFloat(vigourOfShake), NSMinY(frame)) CGPathAddLineToPoint(shakePath, nil, NSMinX(frame) + frame.size.width * CGFloat(vigourOfShake), NSMinY(frame)) } CGPathCloseSubpath(shakePath) shakeAnimation.path = shakePath shakeAnimation.duration = CFTimeInterval(durationOfShake) self.view.window?.animations = ["frameOrigin":shakeAnimation] self.view.window?.animator().setFrameOrigin(self.view.window!.frame.origin) 

Swift 3.0:

 let numberOfShakes:Int = 8 let durationOfShake:Float = 0.5 let vigourOfShake:Float = 0.05 let frame:CGRect = (self.view.window!.frame) let shakeAnimation = CAKeyframeAnimation() let shakePath = CGMutablePath() shakePath.move(to: CGPoint(x: NSMinX(frame), y: NSMinY(frame))) for _ in 1...numberOfShakes { shakePath.addLine(to: CGPoint(x:NSMinX(frame) - frame.size.width * CGFloat(vigourOfShake), y: NSMinY(frame))) shakePath.addLine(to: CGPoint(x:NSMinX(frame) + frame.size.width * CGFloat(vigourOfShake), y: NSMinY(frame))) } shakePath.closeSubpath() shakeAnimation.path = shakePath shakeAnimation.duration = CFTimeInterval(durationOfShake) self.view.window?.animations = ["frameOrigin":shakeAnimation] self.view.window?.animator().setFrameOrigin((self.view.window?.frame.origin)!) 

Answer 3

I'm crazy for the blocks. A block version is also needed here, which should also work ...

 - (void)shakeView:(UIView *)view times:(NSInteger)times completion:(void (^)(BOOL finished))completion { if (times <= 0) { completion(YES); } else { UIViewAnimationOptions options = UIViewAnimationOptionBeginFromCurrentState; [UIView animateWithDuration:0.1 delay: 0.0 options: options animations:^{ view.frame = CGRectOffset(view.frame, 6.0, 0.0); // shake to } completion:^(BOOL finished){ [UIView animateWithDuration:0.1 delay: 0.0 options:options animations:^{ view.frame = CGRectOffset(view.frame, -6.0, 0.0); // shake fro } completion:^(BOOL finished) { [self shakeView:view times:times-1 completion:completion]; }]; }]; } } 

Answer 4

So I did it:

 -(void)shakeLayer:(CALayer*)layer{ int repeats = 4; float time = 0.04; float movement = 5; for(int x = 0; x < repeats; x++){ dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(x*(time*4) * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{ CABasicAnimation *posAnimation = [CABasicAnimation animationWithKeyPath:@"transform.translation.x"]; [posAnimation setFromValue:[NSNumber numberWithFloat:0]]; [posAnimation setToValue:[NSNumber numberWithFloat:movement]]; [posAnimation setBeginTime:0.0]; [posAnimation setDuration:time]; CABasicAnimation *negAnimation = [CABasicAnimation animationWithKeyPath:@"transform.translation.x"]; [negAnimation setFromValue:[NSNumber numberWithFloat:movement]]; [negAnimation setToValue:[NSNumber numberWithFloat:-movement]]; [negAnimation setBeginTime:time]; [negAnimation setDuration:time*2]; CABasicAnimation *posAnimation2 = [CABasicAnimation animationWithKeyPath:@"transform.translation.x"]; [posAnimation2 setFromValue:[NSNumber numberWithFloat:-movement]]; [posAnimation2 setToValue:[NSNumber numberWithFloat:0]]; [posAnimation2 setBeginTime:time*3]; [posAnimation2 setDuration:time]; CAAnimationGroup *group = [CAAnimationGroup animation]; [group setDuration:time*4]; [group setAnimations:[NSArray arrayWithObjects:posAnimation, negAnimation, posAnimation2, nil]]; [layer addAnimation:group forKey:nil]; }); } }