IOS初始化控制器的两种方法

题记

生活很简单，只不过就是忘记了知识，再去学习知识。

笔录一 ViewControllViewController方式

#import "AppDelegate.h"
#import "ViewController.h"@interface AppDelegate ()@property(nonatomic,strong) ViewController *viewController;@end@implementation AppDelegate- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {//初始化控制器self.viewController = [[ViewController alloc]init];//初始化windowself.window =[[UIWindow alloc]initWithFrame:[UIScreen mainScreen].bounds];//设置控制器self.window.rootViewController = self.viewController;return YES;
}

笔录二 ViewControllViewController 与 xib方式

#import "AppDelegate.h"#import "XibViewControllViewController.h"@interface AppDelegate ()@property(nonatomic,strong) ViewController *viewController;
@property(nonatomic,strong) XibViewControllViewController *xibControllViewController;@end@implementation AppDelegate- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {//初始化控制器self.xibControllViewController = [[XibViewControllViewController alloc]initWithNibName:@"XibViewControllViewController" bundle:nil];//初始化windowself.window =[[UIWindow alloc]initWithFrame:[UIScreen mainScreen].bounds];//设置控制器self.window.rootViewController = self.xibControllViewController;return YES;
}