【代码笔记】iOS-旋转的风扇

#import "AppDelegate.h"
//加入头文件
#import "RoundDiskViewController.h"

@implementation AppDelegate

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Override point for customization after application launch.

RoundDiskViewController *roundViewController = [[RoundDiskViewController alloc] init];
[self.window addSubview:roundViewController.view];

self.window.backgroundColor = [UIColor whiteColor];
[self.window makeKeyAndVisible];
return YES;
}