为 UIAlertView 创建摇动动画

Question

我正在尝试摇动 UIAlertView。我已经让 alertView 停留在按钮点击时，但摇动动画不起作用。这是我拥有的：

- (void) alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
    if (buttonIndex == 1) {
        self.direction = 1;
        self.shakes = 0;
        [self shake:aUIView];
    }
}

-(void)shake:(UIAlertView *)theOneYouWannaShake
{
  [UIView animateWithDuration:0.03 animations:^ {
                                    theOneYouWannaShake.transform = CGAffineTransformMakeTranslation(5 * self.direction, 0);
                                  } 
                                  completion:^(BOOL finished) {
                                    if(self.shakes >= 10) {
                                      theOneYouWannaShake.transform = CGAffineTransformIdentity;
                                      return;
                                    }
                                    self.shakes++;
                                    self.direction = self.direction * -1;
                                    [self shake:theOneYouWannaShake];
                                  }];
}

我尝试将 NSLog 放入 - (void)shake... 中，我得到了一个输出。所以我的代码一定有问题，为什么 alertView 没有摇晃。

Answer 1

您可以使用 UIKit Dynamics 实现 iOS 中的动画效果。这是 tutorial which using UIKit Dynamics for UIAlertView shake animation. For more you can refer this tutorial 也位于 swift.

Answer 2

我创造了一种错觉，让 alertview 看起来像是在摇晃。前提是你必须设置 alertview（包括那个深色背景屏幕）应该摇晃到什么程度的参数。

因为你不能改变 UIAlertView 的框架，所以继续使用 CGTranformations。

UIAlertView *dialog = [[UIAlertView alloc] initWithTitle:@"Title"
                                                 message:@"Message:"
                                                delegate:self cancelButtonTitle:@"Cancel"
                                       otherButtonTitles:@"Done", nil];

[dialog setAlertViewStyle:UIAlertViewStylePlainTextInput];
[dialog show];


UIView *dillusionView = [[UIView alloc]initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height)];
[dillusionView setBackgroundColor:[UIColor blackColor]];
[self.view addSubview:dillusionView];


[UIView animateKeyframesWithDuration:1.0 delay:0.0 options:UIViewKeyframeAnimationOptionAutoreverse | UIViewKeyframeAnimationOptionRepeat animations:^{
    [UIView addKeyframeWithRelativeStartTime:0.0 relativeDuration:0.5 animations:^{
        dialog.window.transform = CGAffineTransformTranslate(dialog.transform, dialog.frame.origin.x - 10, dialog.frame.origin.y);
    }];
    [UIView addKeyframeWithRelativeStartTime:0.5 relativeDuration:0.5 animations:^{
        dialog.window.transform = CGAffineTransformTranslate(dialog.transform, dialog.frame.origin.x + 10, dialog.frame.origin.y);
    }];
} completion:nil];

我建议改用自定义创建的 UIAlertView，而且可用的开源库很少。

为 UIAlertView 创建摇动动画

Create a shake animation for a UIAlertView

animation

objective-c

uialertview

ios