iOS开发- 启动动画(动态欢迎界面,非静态Default)

最近在使用《青葱日记》这款App，发现它的启动界面做的很精美。

不同我自己之前简单的替换Default.png图片。 它的动态效果做的不错。

于是乎,花了点时间，自己实现了这个功能。 其实也很简单，具体效果如下



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

[cpp] view
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- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions  

执行完之后,才会进入视图。如果，我们在这个方法中加入一些动画，那么就会在动画执行完之后再进入我们的rootview。这就是实现原理。 很简单吧。

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

[cpp] view
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@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];  

                     }  

     ];  

}