UI2_视图切换ViewController

//

//  SubViewController.h

//  UI2_视图切换

//

//  Created by zhangxueming on 15/7/3.

//  Copyright (c) 2015年 zhangxueming. All rights reserved.

//

#import <UIKit/UIKit.h>

@interface SubViewController : UIViewController

@end

//

//  SubViewController.m

//  UI2_视图切换

//

//  Created by zhangxueming on 15/7/3.

//  Copyright (c) 2015年 zhangxueming. All rights reserved.

//

#import "SubViewController.h"

@interface SubViewController ()

@end

@implementation SubViewController

- (void)viewDidLoad {

    [super viewDidLoad];

    // Do any additional setup after loading the view.

    self.view.backgroundColor = [UIColor cyanColor];

    UIButton *btn = [UIButton buttonWithType:UIButtonTypeSystem];

    btn.frame = CGRectMake(20, 300, self.view.frame.size.width-40, 50);

    btn.backgroundColor = [UIColor whiteColor];

    [btn setTitle:@"视图切换" forState:UIControlStateNormal];

    [btn addTarget:self action:@selector(btnClicked) forControlEvents:UIControlEventTouchUpInside];

    [self.view addSubview:btn];

}

- (void)btnClicked

{

    NSLog(@"-----");

    if (self.view.superview) {

        [self.view removeFromSuperview];

    }

}

- (void)didReceiveMemoryWarning {

    [super didReceiveMemoryWarning];

    // Dispose of any resources that can be recreated.

}

/*

#pragma mark - Navigation

// In a storyboard-based application, you will often want to do a little preparation before navigation

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {

    // Get the new view controller using [segue destinationViewController].

    // Pass the selected object to the new view controller.

}

*/

@end

//

//  RootViewController.h

//  UI2_视图切换

//

//  Created by zhangxueming on 15/7/3.

//  Copyright (c) 2015年 zhangxueming. All rights reserved.

//

#import <UIKit/UIKit.h>

@interface RootViewController : UIViewController

@end

//

//  RootViewController.m

//  UI2_视图切换

//

//  Created by zhangxueming on 15/7/3.

//  Copyright (c) 2015年 zhangxueming. All rights reserved.

//

#import "RootViewController.h"

#import "SubViewController.h"

@interface RootViewController ()

{

    SubViewController *_svc;

}

@end

@implementation RootViewController

- (void)viewDidLoad {

    [super viewDidLoad];

    // Do any additional setup after loading the view.

    self.view.backgroundColor = [UIColor redColor];

    _svc = [[SubViewController alloc] init];

    UIButton *btn = [UIButton buttonWithType:UIButtonTypeSystem];

    btn.frame = CGRectMake(20, 200, self.view.frame.size.width-40, 50);

    [btn setTitle:@"视图切换" forState:UIControlStateNormal];

    btn.backgroundColor = [UIColor whiteColor];

    [btn addTarget:self action:@selector(btnClicked) forControlEvents:UIControlEventTouchUpInside];

    [self.view addSubview:btn];

}

- (void)btnClicked

{

    [self.view addSubview:_svc.view];

}

- (void)didReceiveMemoryWarning {

    [super didReceiveMemoryWarning];

    // Dispose of any resources that can be recreated.

}

/*

#pragma mark - Navigation

// In a storyboard-based application, you will often want to do a little preparation before navigation

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {

    // Get the new view controller using [segue destinationViewController].

    // Pass the selected object to the new view controller.

}

*/

@end

//

//  AppDelegate.m

//  UI2_视图切换

//

//  Created by zhangxueming on 15/7/3.

//  Copyright (c) 2015年 zhangxueming. All rights reserved.

//

#import "AppDelegate.h"

#import "RootViewController.h"

@interface AppDelegate ()

@end

@implementation AppDelegate

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

    // Override point for customization after application launch.

    RootViewController *rootViewController = [[RootViewController alloc] init];

    self.window.rootViewController = rootViewController;

    return YES;

}