textField输入内容有误时颤抖一下警示作用

做项目遇到一个需求，就是再输入手机号时如果手机号输入错误，textField要颤抖一下用来警示用户输入错误；网上也找过一些，那些都是封装好的，今天自己找到苹果自带的CAlayer动画可以实现，自己了一个方法；用苹果自带的API实现;

首先导入QuartzCore.framework这个框架，然后在控制器页面导入#import

#点击来确定输入内容是否正确

- (void)isValidate

{

if(![textField.textisEqualToString:@"code4app"]) {

[selfshakeAnimationForView:textField];

}

}

-(void)shakeAnimationForView:(UIView*)view

{

CALayer*lay_lb = [viewlayer];

CGPointpos_lb = [lay_lbposition];

CGPointy =CGPointMake(pos_lb.x-10, pos_lb.y);

CGPointx =CGPointMake(pos_lb.x+10, pos_lb.y);

CABasicAnimation* animation = [CABasicAnimationanimationWithKeyPath:@"position"];

[animationsetTimingFunction:[CAMediaTimingFunction

functionWithName:kCAMediaTimingFunctionEaseInEaseOut]];

[animationsetFromValue:[NSValuevalueWithCGPoint:x]];

[animationsetToValue:[NSValuevalueWithCGPoint:y]];

[animationsetAutoreverses:YES];

[animationsetDuration:0.08];

[animationsetRepeatCount:3];

[lay_lbaddAnimation:animationforKey:nil];

}