IOS启动动画

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首先这个是从别的地方找的，方便记录，怕万一哪天原文被删除找不到

启动动画的gif图片

实现起来也不困难。因为我们知道，在应用启动的时候,它会先执行AppDelegate.m中的

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions

下面直接给出实现这一效果的源码,很简单。不多说废话（当然,实现方法很多。我只是给出我自己的方法）

1.AppDelegate.h中声明一个UIImageView

@property (strong, nonatomic) UIImageView *splashView;

2.AppDelegate.m实现相关功能

@synthesize splashView;- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions{    // Override point for customization after application launch.    [self.window makeKeyAndVisible];    splashView = [[UIImageView alloc]initWithFrame:CGRectMake(0, 0, 320, 568)];    [splashView setImage:[UIImage imageNamed:@"back_"]];    [self.window addSubview:splashView];    [self.window bringSubviewToFront:splashView];    [self performSelector:@selector(scale_1) withObject:nil afterDelay:0.0f];    [self performSelector:@selector(scale_2) withObject:nil afterDelay:0.5f];    [self performSelector:@selector(scale_3) withObject:nil afterDelay:1.0f];    [self performSelector:@selector(scale_4) withObject:nil afterDelay:1.5f];    [self performSelector:@selector(scale_5) withObject:nil afterDelay:2.0f];    [self performSelector:@selector(showWord) withObject:nil afterDelay:2.5f];    return YES;}-(void)scale_1{    UIImageView *round_1 = [[UIImageView alloc]initWithFrame:CGRectMake(100, 240, 15, 15)];    round_1.image = [UIImage imageNamed:@"round_"];    [splashView addSubview:round_1];    [self setAnimation:round_1];}-(void)scale_2{    UIImageView *round_2 = [[UIImageView alloc]initWithFrame:CGRectMake(105, 210, 20, 20)];    round_2.image = [UIImage imageNamed:@"round_"];    [splashView addSubview:round_2];    [self setAnimation:round_2];}-(void)scale_3{    UIImageView *round_3 = [[UIImageView alloc]initWithFrame:CGRectMake(125, 170, 30, 30)];    round_3.image = [UIImage imageNamed:@"round_"];    [splashView addSubview:round_3];    [self setAnimation:round_3];}-(void)scale_4{    UIImageView *round_4 = [[UIImageView alloc]initWithFrame:CGRectMake(160, 135, 40, 40)];    round_4.image = [UIImage imageNamed:@"round_"];    [splashView addSubview:round_4];    [self setAnimation:round_4];}-(void)scale_5{    UIImageView *heart_1 = [[UIImageView alloc]initWithFrame:CGRectMake(130, 180, 100, 100)];    heart_1.image = [UIImage imageNamed:@"heart_"];    [splashView addSubview:heart_1];    [self setAnimation:heart_1];}-(void)setAnimation:(UIImageView *)nowView{    [UIView animateWithDuration:0.6f delay:0.0f options:UIViewAnimationOptionCurveLinear                     animations:^                    {                        // 执行的动画code                        [nowView setFrame:CGRectMake(nowView.frame.origin.x- nowView.frame.size.width*0.1, nowView.frame.origin.y-nowView.frame.size.height*0.1, nowView.frame.size.width*1.2, nowView.frame.size.height*1.2)];                     }                     completion:^(BOOL finished)                    {                         // 完成后执行code                        [nowView removeFromSuperview];                     }     ];}-(void)showWord{    UIImageView *word_ = [[UIImageView alloc]initWithFrame:CGRectMake(75, 440, 170, 29)];    word_.image = [UIImage imageNamed:@"word_"];    [splashView addSubview:word_];    word_.alpha = 0.0;    [UIView animateWithDuration:1.0f delay:0.0f options:UIViewAnimationOptionCurveLinear                     animations:^                     {                         word_.alpha = 1.0;                     }                     completion:^(BOOL finished)                     {                         // 完成后执行code                         [NSThread sleepForTimeInterval:1.0f];                         [splashView removeFromSuperview];                     }     ];}

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