引导页

包含文件

• AppDelegate.h, AppDelegate.m

实现功能

1、简单功能

• 设置App的底色为白色
• 加载主页面
• 隐藏navigationBarHidden, 设置状态栏的样色为UIStatusBarStyleLightContent
• 调用引导效果

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    // Override point for customization after application launch.

    self.window = [[UIWindow alloc] initWithFrame:kScreenBounds];
    self.window.backgroundColor = [UIColor whiteColor]；
    。。。//加载主页面
    [self.window makeKeyAndVisible];
    navigationController.navigationBarHidden = YES;

    [[UIApplication sharedApplication] setStatusBarStyle:UIStatusBarStyleLightContent];
    [self setLauchView];
    return YES;
}

2、引导效果（重点）

• 创建UIImageView（_launchImaViewT），大小为全屏
• 创建UIImageView（_launchImaViewO），大小为全屏，默认图片为Default@2x.png,_launchImaViewO遮盖_launchImaViewT
• 获取网络图片，如果成功，_launchImaViewT加载该图片，并用2秒动画效果显示，将_launchImaViewO设置为全透明
• 动画执行完毕后，移除_launchImaViewO，_launchImaViewT

@property(strong,nonatomic) UIImageView *launchImaViewO;
@property(strong,nonatomic) UIImageView *launchImaViewT;

- (void)setLauchView {
    _launchImaViewT = [[UIImageView alloc] initWithFrame:kScreenBounds];
    _launchImaViewT.contentMode = UIViewContentModeScaleAspectFill;
    [self.window addSubview:_launchImaViewT];

    _launchImaViewO = [[UIImageView alloc] initWithFrame:kScreenBounds];
    _launchImaViewO.image = [UIImage imageWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"Default@2x" ofType:@"png"]];
    [self.window addSubview:_launchImaViewO];

    [HttpOperation getRequestWithURL:@"start-image/720*1184" parameters:nil success:^(id responseObject) {
        [_launchImaViewT sd_setImageWithURL:[NSURL URLWithString:responseObject[@"img"]]];
        [UIView animateWithDuration:2.0f animations:^{
            _launchImaViewO.alpha = 0.f;
            _launchImaViewT.transform = CGAffineTransformMakeScale(1.2, 1.2);
        } completion:^(BOOL finished) {
            [_launchImaViewO removeFromSuperview];
            [_launchImaViewT removeFromSuperview];
        }];
    } failure:nil];
}

这里面有问题，如果获取图片失败（没有网络等）,会一直阻塞在引导页面。

• 添加条件,如果获取失败，则使用_launchImaViewO进行动画效果

    。。。
    } failure:^(NSError *error)
    {
        [UIView animateWithDuration:2.0f animations:^{
            _launchImaViewO.transform = CGAffineTransformMakeScale(1.2, 1.2);
        } completion:^(BOOL finished) {
            [_launchImaViewO removeFromSuperview];
            [_launchImaViewT removeFromSuperview];
        }];
    }];