【IOS动画】视图左右抖动动画效果

CABasicAnimation* shake = [CABasicAnimation animationWithKeyPath:@"transform.translation.x"];
    shake.fromValue = [NSNumber numberWithFloat:-5];
    shake.toValue = [NSNumber numberWithFloat:5];
    shake.duration = 0.1;//执行时间
    shake.autoreverses = YES; //是否重复
    shake.repeatCount = 2;//次数
    [self.infoLabel.layer addAnimation:shake forKey:@"shakeAnimation"];
    self.infoLabel.alpha = 1.0;
    [UIView animateWithDuration:2.0 delay:0.0 options:UIViewAnimationOptionCurveEaseIn | UIViewAnimationOptionAllowUserInteraction animations:^{
        //self.infoLabel.alpha = 0.0; //透明度变0则消失
    } completion:nil];

self.infoLabel是一个UILabel对象，实现label错误提示时左右抖动的效果