IOS初始化控制器的实现方法总结

一.ViewControllViewController方法

#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window self.window =[[UIWindow alloc]initWithFrame:[UIScreen mainScreen].bounds]; //设置控制器 self.window.rootViewController = self.viewController; return YES;}

二 .ViewControllViewController 与 xib方法

#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window self.window =[[UIWindow alloc]initWithFrame:[UIScreen mainScreen].bounds]; //设置控制器 self.window.rootViewController = self.xibControllViewController; return YES;}

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