ios7 programming cookbook 第十四章学习笔记

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions{
    
    NSFileManager *fileManager = [[NSFileManager alloc] init];
    //返回当前用户临时目录的路径。
    NSString *tempDir = NSTemporaryDirectory();
    
    NSString *imagesDir = [tempDir stringByAppendingPathComponent:@"images"];
    
    NSError *error = nil;
    if ([fileManager createDirectoryAtPath:imagesDir withIntermediateDirectories:YES attributes:nil error:&error]){
        
        NSLog(@"成功创建目录.");
    } else {
        NSLog(@"创建目录失败 Error = %@", error);
    }
    
    self.window = [[UIWindow alloc]
                   initWithFrame:[[UIScreen mainScreen] bounds]];
    self.window.backgroundColor = [UIColor whiteColor];
    [self.window makeKeyAndVisible];
    return YES;
}