视图导航与控制器交互-优快云博客

本文链接：https://blog.youkuaiyun.com/Apel0811/article/details/51296130

本文探讨了在iOS开发中如何实现视图之间的导航和控制器之间的交互，通过具体实例展示了如何利用UINavigationController和UIViewController来创建多层级视图，并实现视图间的跳转和返回操作。

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OneViewController.m

#import "OneViewController.h"
#import "TwoViewController.h"

@interface OneViewController ()

@end

@implementation OneViewController

- (void)viewDidLoad {
    [super viewDidLoad];

    NSInteger number =[self.navigationController.viewControllers count];
    self.title = [NSString stringWithFormat:@"第%ld个视图", number];
}
- (IBAction)buttonAction:(UIButton *)sender {

    TwoViewController *two = [[TwoViewController alloc] init];
    [self.navigationController pushViewController:two animated:YES];
}

@end

TwoViewController.m

#import "TwoViewController.h"
#import "ThreeViewController.h"

@interface TwoViewController ()

@end

@implementation TwoViewController

- (void)viewDidLoad {
    [super viewDidLoad];

    NSInteger number =[self.navigationController.viewControllers count];
    self.title = [NSString stringWithFormat:@"第%ld个视图", number];
}

- (IBAction)buttonAction:(UIButton *)sender {

    UINavigationController *nc = self.navigationController;
    ThreeViewController *three = [[ThreeViewController alloc] init];
    switch (sender.tag) {
        case 1:
            [nc pushViewController:three animated:YES];
            break;
        case 2:
            [nc popToRootViewControllerAnimated:YES];
            break;
        default:
            break;
    }
}

@end

ThreeViewController.m

#import "ThreeViewController.h"

@interface ThreeViewController ()

@end

@implementation ThreeViewController

- (void)viewDidLoad {
    [super viewDidLoad];

    NSInteger number =[self.navigationController.viewControllers count];
    self.title = [NSString stringWithFormat:@"第%ld个视图", number];
}

- (IBAction)buttonAction:(UIButton *)sender {

    UINavigationController *nc = self.navigationController;
    ThreeViewController *three = [[ThreeViewController alloc] init];

    UIAlertView *alertView = [[UIAlertView alloc]initWithTitle:@"请输入index" message:[NSString stringWithFormat:@"1-%@", self.title]delegate:self cancelButtonTitle:@"取消" otherButtonTitles:@"确定", nil];
    alertView.alertViewStyle = UIAlertViewStylePlainTextInput;
    switch (sender.tag) {
        case 1:
            [nc pushViewController:three animated:YES];
            break;
        case 2:
            [nc popViewControllerAnimated:YES];
            break;
        case 3:
            [nc popToRootViewControllerAnimated:YES];
            break;
        case 4:
            [alertView show];
            break;
        default:
            break;
    }
}
//警告栏消失自动调用
- (void)alertView:(UIAlertView *)alertView didDismissWithButtonIndex:(NSInteger)buttonIndex {

    NSString *str = [alertView textFieldAtIndex:0].text;
    NSInteger i = [str integerValue];

    UINavigationController *nc = self.navigationController;
    [nc popToViewController:nc.viewControllers[i-1] animated:YES];
}
@end