IOS学习（六）导航视图控制器

来源：互联网发布：python笔试选择题编辑：程序博客网时间：2024/04/29 10:06

Appdelegate

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {        self.window = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];    [self.window makeKeyAndVisible];    UINavigationController *navigationCtonroller =[[UINavigationController alloc] initWithRootViewController:[[FirstViewController alloc] init]];    [self.window setRootViewController:navigationCtonroller];        return YES;}

FistViewController

- (void)viewDidLoad {    [super viewDidLoad];        self.view.backgroundColor = [UIColor grayColor];        self.title = @"First";    UIBarButtonItem *leftButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAdd target:self action:NULL];    //设置系统图片，设置单个view//    self.navigationItem.leftBarButtonItem = leftButton;        //自定义itembutton    UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 90, 30)];    label.text = @"应用商店";    label.backgroundColor = [UIColor grayColor];    UIBarButtonItem *customButton = [[UIBarButtonItem alloc] initWithCustomView:label];    [label targetForAction:@selector(pushController) withSender:self];    //设置多个itmesButton    self.navigationItem.leftBarButtonItems = @[leftButton,customButton];                //设置导航控制器的颜色//    self.navigationController.navigationBar.backgroundColor = [UIColor redColor];    //设置导航控制器的背景图片//    [self.navigationController.navigationBar setBackgroundImage:[UIImage imageNamed:@"buttonPost"] forBarMetrics:UIBarMetricsDefault];            UIButton *pushButton = [UIButton buttonWithType:UIButtonTypeCustom];    pushButton.frame = CGRectMake(0, 100, 100, 30);    pushButton.backgroundColor = [UIColor greenColor];    [pushButton setTitle:@"push" forState:UIControlStateNormal];    [pushButton addTarget:self action:@selector(pushController) forControlEvents:UIControlEventTouchUpInside];        [self.view addSubview:pushButton];}- (void)pushController {    NSLog(@"hehhe");        //这里如果SecondViewController没有设置背景色，没有做其他操作，在跳转时，跳转动画将发生卡顿现象    [self.navigationController pushViewController:[[SecondViewController alloc] init] animated:YES];}- (void)didReceiveMemoryWarning {    [super didReceiveMemoryWarning];    // Dispose of any resources that can be recreated.}

SecondViewController

- (void)viewDidLoad {    [super viewDidLoad];    // Do any additional setup after loading the view.        self.title = @"Second";    self.view.backgroundColor = [UIColor blueColor];        UIBarButtonItem *item = [[UIBarButtonItem alloc] initWithTitle:@"POP" style:UIBarButtonItemStylePlain target:self action:@selector(pop)];    self.navigationItem.leftBarButtonItem = item;        UIBarButtonItem *rightItem = [[UIBarButtonItem alloc] initWithTitle:@"PUSH" style:UIBarButtonItemStylePlain target:self action:@selector(push)];    self.navigationItem.rightBarButtonItem = rightItem;    }- (void)push{    [self.navigationController pushViewController:[[ThridViewController alloc] init] animated:YES];}- (void)pop {    [self.navigationController popViewControllerAnimated:YES];}

ThirdViewController

- (void)viewDidLoad {    [super viewDidLoad];    // Do any additional setup after loading the view.    self.title = @"Third";    self.view.backgroundColor = [UIColor greenColor];        UIBarButtonItem *rightItem = [[UIBarButtonItem alloc] initWithTitle:@"跳转" style:UIBarButtonItemStylePlain target:self action:@selector(push)];    self.navigationItem.leftBarButtonItem = rightItem;    }- (void)push {    //跳转到根视图//    [self.navigationController popToRootViewControllerAnimated:true];    //销毁当前视图//    [self.navigationController popViewControllerAnimated:YES];        //获取导航控制器下所有的视图控制器    NSLog(@"%@", self.navigationController.viewControllers);    //跳转到指定视图控制器    [self.navigationController popToViewController:self.navigationController.viewControllers[1] animated:YES];}

0 0