《30天精通iPhone手机编程》－Day24－烟花

    在iphone os环境下，图像视图（UIImageView）中包含了一个动画图像animationImages属性值，它为图像视图引入一系列的图像，用连续改变image的方法来实现动画，等于一针一针的播放视频。

FlipsideViewController.h

//使用@protocol声明程序的协议为副页视图控制器代理 @protocol FlipsideViewControllerDelegate; @interface FlipsideViewController : UIViewController { //定义代理协议的身份 id <FlipsideViewControllerDelegate> delegate; } @property (nonatomic, assign) id <FlipsideViewControllerDelegate> delegate; - (IBAction)done:(id)sender; @end //声明程序的副页视图控制器代理协议 @protocol FlipsideViewControllerDelegate - (void)flipsideViewControllerDidFinish:(FlipsideViewController *)controller; @end 

FlipsideViewController.m

@synthesize delegate;
- (void)viewDidLoad {
    [super viewDidLoad];
    self.view.backgroundColor = [UIColor viewFlipsideBackgroundColor];      
}
- (IBAction)done:(id)sender {
	[self.delegate flipsideViewControllerDidFinish:self];	
}

MainViewController.h

#import "FlipsideViewController.h"
//导入二维动画框架头文件
#import <QuartzCore/QuartzCore.h>
@interface MainViewController : UIViewController <FlipsideViewControllerDelegate> {
}
- (IBAction)showInfo:(id)sender;
@end

MainViewController.m

- (void)viewDidLoad {
	[super viewDidLoad];
    //定义其关键针动画属性值
	UIImageView* FireView = [[UIImageView alloc] initWithFrame:self.view.frame];
	//定义关键帧动画图像的数组变量对象为烟花的图像文件
	FireView.animationImages = [NSArray arrayWithObjects:	
								[UIImage imageNamed:@"fire01.png"],
								[UIImage imageNamed:@"fire02.png"],
								[UIImage imageNamed:@"fire03.png"],
								[UIImage imageNamed:@"fire04.png"],
								[UIImage imageNamed:@"fire05.png"],
								nil];
	//动画的动态时间
	FireView.animationDuration = 1.75;
	//无限循环
	FireView.animationRepeatCount = 0; 
	//动画开始
	[FireView startAnimating];
	[self.view addSubview:FireView];
	[FireView release];
}
- (void)flipsideViewControllerDidFinish:(FlipsideViewController *)controller {
    //视图转换，翻页动态效果
	[self dismissModalViewControllerAnimated:YES];
}
- (IBAction)showInfo:(id)sender {    
	FlipsideViewController *controller = [[FlipsideViewController alloc] initWithNibName:@"FlipsideView" bundle:nil];
	controller.delegate = self;
	//定义控制器转换视图的形态类型
	controller.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
	[self presentModalViewController:controller animated:YES];
	[controller release];
}