UITextField抖动动画
最近做项目，需求中要求用户名或密码输错时，输入框要抖动（类似Mac登录密码错误的抖动效果）。现将代码分享出来：
@interface UITextField (YHShakeUITextField)
- (void) shake;
@end
#import "YH-TextField.h"
#import <QuartzCore/QuartzCore.h>
@implementation UITextField (YHShakeUITextField)
//self.superView
- (void) shake {
CAKeyframeAnimation *keyAn = [CAKeyframeAnimationanimationWithKeyPath:@"position"];
[keyAnsetDuration:0.5f];
NSArray *array = [[NSArrayalloc] initWithObjects:
[NSValuevalueWithCGPoint:CGPointMake(self.center.x,self.center.y)],
[NSValuevalueWithCGPoint:CGPointMake(self.center.x-5,self.center.y)],
[NSValuevalueWithCGPoint:CGPointMake(self.center.x+5,self.center.y)],
[NSValuevalueWithCGPoint:CGPointMake(self.center.x,self.center.y)],
[NSValuevalueWithCGPoint:CGPointMake(self.center.x-5,self.center.y)],
[NSValuevalueWithCGPoint:CGPointMake(self.center.x+5,self.center.y)],
[NSValuevalueWithCGPoint:CGPointMake(self.center.x,self.center.y)],
[NSValuevalueWithCGPoint:CGPointMake(self.center.x-5,self.center.y)],
[NSValuevalueWithCGPoint:CGPointMake(self.center.x+5,self.center.y)],
[NSValuevalueWithCGPoint:CGPointMake(self.center.x,self.center.y)],
nil];
[keyAnsetValues:array];
[arrayrelease];
NSArray *times = [[NSArrayalloc] initWithObjects:
[NSNumbernumberWithFloat:0.1f],
[NSNumbernumberWithFloat:0.2f],
[NSNumbernumberWithFloat:0.3f],
[NSNumbernumberWithFloat:0.4f],
[NSNumbernumberWithFloat:0.5f],
[NSNumbernumberWithFloat:0.6f],
[NSNumbernumberWithFloat:0.7f],
[NSNumbernumberWithFloat:0.8f],
[NSNumbernumberWithFloat:0.9f],
[NSNumbernumberWithFloat:1.0f],
nil];
[keyAnsetKeyTimes:times];
[timesrelease];
[self.layeraddAnimation:keyAn forKey:@"TextAnim"];
}
@end
在登录的类里调用如下：
-(void)isloginbuttonClick
{
if ([userTextField.textlength] == 0)
{
UIAlertView *alertView = [[UIAlertViewalloc] initWithTitle:@"watch out"
message:@"please input user"
delegate:nil
cancelButtonTitle:@"OK"
otherButtonTitles:nil,nil];
[alertViewshow];
[alertViewrelease];
[userTextFieldshake];
}
elseif ([passwordTextField.textlength] == 0)
{
UIAlertView *alertView = [[UIAlertViewalloc] initWithTitle:@"watch out"
message:@"please input password"
delegate:nil
cancelButtonTitle:@"OK"
otherButtonTitles:nil,nil];
[alertViewshow];
[alertViewrelease];
[passwordTextFieldshake];
}
else
{
SecondViewController *secondViewController = [[SecondViewControlleralloc] init];
[self.navigationControllerpushViewController:secondViewController animated:YES];
}
}