iPhone 实现地图程序效果

看了很多例子的CurlUp和CurlDown，都是翻页效果，没有像地图那样翻到一半停下的，偶然在网上看到了方法，自己做了一个例子，不敢独享，拿出来大家看一下。

关键代码如下：

1. - (IBAction)curlUp{

2. NSLog(@"Curl");

3. // Curl the image up or down

4. CATransition *animation = [CATransition animation];

5. [animation setDelegate:self];

6. [animation setDuration:0.35];

7. [animation setTimingFunction:UIViewAnimationCurveEaseInOut];

8. if (!curled){

9. animation.type = @"pageCurl";

10. animation.fillMode = kCAFillModeForwards;

11. animation.endProgress = 0.58;

12. } else {

13. animation.type = @"pageUnCurl";

14. animation.fillMode = kCAFillModeBackwards;

15. animation.startProgress = 0.42;

16. }

17. [animation setRemovedOnCompletion:NO];

18. [view exchangeSubviewAtIndex:0 withSubviewAtIndex:1];

19.

20. [view addAnimation:animation forKey:@"pageCurlAnimation"];

21.

22. // Disable user interaction where necessary

23. if (!curled) {

24.

25. } else {

26.

27. }

28.

29. curled = !curled;

30. }