获取我们添加到Assets.xcassets的LaunchImage

配置启动图片如下所示

launchimage

获取这里面图片的名字做一些操作，我们代码如下

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    // Override point for customization after application launch.
   self.window =  [[UIWindow alloc]initWithFrame:[UIScreen mainScreen].bounds];
    CGSize viewSize  = self.window.bounds.size;
    
    NSLog(@"nrect = %@",NSStringFromCGRect(self.window.bounds));
    
    NSString * viewOrientation = @"Portrait";
    NSString * launchImage = nil;
    NSArray * imageDict = [[[NSBundle mainBundle] infoDictionary]valueForKey:@"UILaunchImages"];
    for (NSDictionary  * dict in imageDict) {
        CGSize imageSize = CGSizeFromString(dict[@"UILaunchImageSize"]);
        if (CGSizeEqualToSize(imageSize, viewSize) && [viewOrientation isEqualToString:dict[@"UILaunchImageOrientation"]]) {
            launchImage = dict[@"UILaunchImageName"];
            
        }
    }
    NSLog(@"==luanch = %@",launchImage);
    
    UIImageView * luanchView = [[UIImageView alloc]initWithImage:[UIImage imageNamed:launchImage]];
    self.window.backgroundColor = [UIColor whiteColor];
    luanchView.frame = self.window.bounds;
    luanchView.contentMode = UIViewContentModeScaleAspectFill;
    [self.window addSubview:luanchView];
    [UIView animateWithDuration:2.0f delay:1.0f usingSpringWithDamping:0.5f initialSpringVelocity:1.0 options:UIViewAnimationOptionCurveLinear animations:^{
        luanchView.alpha = 0.0f;
        luanchView.layer.transform = CATransform3DScale(CATransform3DIdentity, 0.8, 0.8, 1);
        
    } completion:^(BOOL finished) {
        luanchView.layer.transform = CATransform3DIdentity;
        [luanchView removeFromSuperview];
    }];
    self.window.rootViewController = [UIViewController new];
    
    [self.window makeKeyWindow];
    
    
    return YES;
}

代码不多，就不用测试demo了，可以直接用代码测试一下，用到了就记录一下，大神还有更好的方法可以给我留言