iphone – 如何使“摇动”动画

发布时间：2020-12-15 01:57:03 所属栏目：百科来源：网络整理

导读：在我的xcode项目中，我有一个UIImage。我想让它摇摆(动画)从左到右一点点。我写了这段代码，但是它不起作用。 -(void)errorShake{ [UIView beginAnimations:nil context:NULL]; [UIView setAnimationDuration:1.0]; [lockImage setTransform:CGAffineTransfo

在我的xcode项目中，我有一个UIImage。我想让它摇摆(动画)从左到右一点点。我写了这段代码，但是它不起作用。

-(void)errorShake
{
    [UIView beginAnimations:nil context:NULL];
    [UIView setAnimationDuration:1.0];



    [lockImage setTransform:CGAffineTransformMakeRotation(-5 * M_PI / 180.0)];
    [lockImage setTransform:CGAffineTransformMakeRotation(-10 * M_PI / 180.0)];
    [lockImage setTransform:CGAffineTransformMakeRotation(-15 * M_PI / 180.0)];
    [lockImage setTransform:CGAffineTransformMakeRotation(-20 * M_PI / 180.0)];
     [lockImage setTransform:CGAffineTransformMakeRotation(-15 * M_PI / 180.0)];
     [lockImage setTransform:CGAffineTransformMakeRotation(-10 * M_PI / 180.0)];
     [lockImage setTransform:CGAffineTransformMakeRotation(-5 * M_PI / 180.0)];
     [lockImage setTransform:CGAffineTransformMakeRotation(0 * M_PI / 180.0)];
     [lockImage setTransform:CGAffineTransformMakeRotation(5 * M_PI / 180.0)];
     [lockImage setTransform:CGAffineTransformMakeRotation(10 * M_PI / 180.0)];
     [lockImage setTransform:CGAffineTransformMakeRotation(15 * M_PI / 180.0)];
     [lockImage setTransform:CGAffineTransformMakeRotation(20 * M_PI / 180.0)];
     [lockImage setTransform:CGAffineTransformMakeRotation(15 * M_PI / 180.0)];
     [lockImage setTransform:CGAffineTransformMakeRotation(10 * M_PI / 180.0)];
     [lockImage setTransform:CGAffineTransformMakeRotation(5 * M_PI / 180.0)];
     [lockImage setTransform:CGAffineTransformMakeRotation(0 * M_PI / 180.0)];


    [UIView commitAnimations];
}

请你告诉我，我怎么能让我的图像震动？

解决方法

这是我用于这个效果的代码。

-(void)shakeView {

        CABasicAnimation *shake = [CABasicAnimation animationWithKeyPath:@"position"];
        [shake setDuration:0.1];
        [shake setRepeatCount:2];
        [shake setAutoreverses:YES];
        [shake setFromValue:[NSValue valueWithCGPoint:
                                 CGPointMake(lockImage.center.x - 5,lockImage.center.y)]];
        [shake setToValue:[NSValue valueWithCGPoint:
                               CGPointMake(lockImage.center.x + 5,lockImage.center.y)]];
        [lockImage.layer addAnimation:shake forKey:@"position"];
    }

正如Jere所说。确保包含导入：

#import <QuartzCore/QuartzCore.h>

您也可以将其添加为UIView中的类别。

（编辑：李大同）

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