IOS加载xib
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Override point for customization after application launch.
self.window.backgroundColor = [UIColor whiteColor];
[self.window makeKeyAndVisible];
NSArray *views = [[NSBundle mainBundle] loadNibNamed:@"View" owner:self options:nil];
[self.window addSubview:[views lastObject]];
return YES;
}