IOS学习 NSNavigationController 多个子页面间相互跳转
@implementation AppDelegate
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
// Override point for customization after application launch.
self.homeVC = [[HomeViewController alloc]init];
UINavigationController *navigation = [[UINavigationController alloc]initWithRootViewController:self.homeVC];
self.window.rootViewController = navigation;
self.window.backgroundColor = [UIColor purpleColor];
return YES;
}
@implementation HomeViewController
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view.
UIButton *button = [[UIButton alloc]initWithFrame:CGRectMake(100, 100, 200, 40)];
button.layer.cornerRadius = 8;
button.backgroundColor = [UIColor greenColor];
[button setTitle:@"push" forState:UIControlStateNormal];
[button addTarget:self action:@selector(pushVC) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:button];
}
-(void)pushVC{
UIViewController *secondVC = [[SecondViewController alloc]init];
secondVC.view.backgroundColor = [UIColor cyanColor];
//跳转至子页面
[self.navigationController pushViewController:secondVC animated:YES];
}
@implementation SecondViewController
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view.
UIButton *button = [[UIButton alloc]initWithFrame:CGRectMake(100, 100, 200, 40)];
button.layer.cornerRadius = 8;
button.backgroundColor = [UIColor purpleColor];
[button setTitle:@"second" forState:UIControlStateNormal];
[button addTarget:self action:@selector(backVC) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:button];
UIButton *button2 = [[UIButton alloc]initWithFrame:CGRectMake(100, 200, 200, 40)];
button2.layer.cornerRadius = 8;
button2.backgroundColor = [UIColor orangeColor];
[button2 setTitle:@"push" forState:UIControlStateNormal];
[button2 addTarget:self action:@selector(pushVC3) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:button2];
}
-(void)backVC{
//导航栏隐藏
if (self.navigationController.toolbarHidden) {
[self.navigationController setToolbarHidden:NO animated:YES];
[self.navigationController setNavigationBarHidden:NO animated:YES];
}else
{
[self.navigationController setToolbarHidden:YES animated:YES];
[self.navigationController setNavigationBarHidden:YES animated:YES];
}
}
-(void)pushVC3{
UIViewController *threeVC = [[ThreeViewController alloc]init];
threeVC.view.backgroundColor = [UIColor yellowColor];
//跳转至子页面
[self.navigationController pushViewController:threeVC animated:YES];
}
@implementation ThreeViewController
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view.
NSArray *array = @[@"push",@"pop",@"root",@"index"];
for (int i=0; i<4; i++) {
UIButton *button = [[UIButton alloc]initWithFrame:CGRectMake(100, 100*(i+1), 200, 40)];
button.layer.cornerRadius = 8;
button.backgroundColor = [UIColor redColor];
NSString *str = array[i];
button.tag = i+1;
[button setTitle:str forState:UIControlStateNormal];
[button addTarget:self action:@selector(backVC:) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:button];
}
}
- (void)backVC:(UIButton *)sender{
switch (sender.tag) {
case 1:
//push 至子页面
threeVC.view.backgroundColor = [UIColor yellowColor];
threeVC = [[ThreeViewController alloc]init];
[self.navigationController pushViewController:threeVC animated:YES];
break;
case 2:
//pop 返回至上一页面
[self.navigationController popViewControllerAnimated:YES];
break;
case 3:
//popToRoot 返回至根页面
[self.navigationController popToRootViewControllerAnimated:YES];
break;
case 4:
//popToView 返回至指定页面
secondVC = [[self.navigationController viewControllers]objectAtIndex:1];
[self.navigationController popToViewController:secondVC animated:YES];
break;
default:
break;
}
}