UIButton AppStore购买按钮动画

Question

您是否有AppStore价格的UIButton动画的示例代码 - >购买按钮.我尝试了很多,但它不能很好地与CAAnimationGroup(缩放+转换)一起使用,并且它只能在UIView beginAnimations中将其设置为新的帧大小.动画首先设置新的宽度(立即)然后设置新的原点..所以它不是正确的效果......

谢谢!

Answer 1

您是否在Core Animation块中进行了更改？

我创建了一个简单的基于视图的iPhone应用程序来测试它.该视图有两个圆角矩形UIButton对象:

1. 第一个按钮位于右上角,宽度为62(高度为35),初始标题为"$ 0.99".它连接到视图控制器中的"按钮"插座和"动画"动作.这是在点击时将动画的按钮.

2. 第二个按钮位于屏幕底部,标题为"重置",并连接到视图控制器中的"重置"操作.

这是视图控制器代码:

UIButtonAnimationTestViewController.h:

#import <UIKit/UIKit.h>

@interface UIButtonAnimationTestViewController : UIViewController {
    IBOutlet UIButton *button;
    CGRect originalFrame;
}

- (IBAction)animate;
- (IBAction)reset;

@end

UIButtonAnimationTestViewController.m:

#import "UIButtonAnimationTestViewController.h"

@implementation UIButtonAnimationTestViewController

- (void)viewDidLoad {
    [super viewDidLoad];

    originalFrame = button.frame;
}

- (IBAction)animate {
    CGRect frame = button.frame;
    frame.origin.x -= 30;
    frame.size.width += 30;

    [UIView beginAnimations:@"button" context:nil];
    button.frame = frame;
    [button setTitle:@"" forState:UIControlStateNormal];
    [UIView setAnimationDelegate:self];
    [UIView commitAnimations];
}

- (void)animationDidStop:(NSString *)animationID finished:(NSNumber *)finished context:(void *)context {
    [button setTitle:@"BUY NOW" forState:UIControlStateNormal];
}

- (IBAction)reset {
    button.frame = originalFrame;
    [button setTitle:@"$0.99" forState:UIControlStateNormal];
}