導航控制器下自定義按鈕完成界面跳轉

import "AppDelegate.h"

import "RootViewController.h"

@interface AppDelegate ()

@end

@implementation AppDelegate

  • (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
    // Override point for customization after application launch.
    self.window.backgroundColor = [UIColor whiteColor];
    [self.window makeKeyAndVisible];

    // 初始化RootVC（rootVC為navC的根視圖控制器，也就是首個被navC管理的視圖控制器）
    RootViewController *rootVC = [[RootViewController alloc]init];
    // 初始化navC (初始化方法使用的是可以給navC設置根視圖控制器)
    UINavigationController *navC = [[UINavigationController alloc]initWithRootViewController:rootVC];

    // 設置navigationBar的tintColor（前端渲染的顏色） 其實是navigationBar上面返回按鈕的顏色
    navC.navigationBar.tintColor = [UIColor redColor];
    // 改變navigationBar的背景顏色
    // navC.navigationBar.backgroundColor = [UIColor yellowColor];
    // 改變navigationBar的透明狀態（默認為半透明）
    navC.navigationBar.translucent = NO;
    // 設置背景圖片
    // UIBarMetricsDefault 橫、豎屏狀態下的背景圖片
    // UIBarMetricsCompact 橫屏狀態下的背景圖片
    [navC.navigationBar setBackgroundImage:[UIImage imageNamed:@"1.png"] forBarMetrics:UIBarMetricsCompact];
    // 設置navigationBar的樣式 (系統提供的只有兩種，淺白色和黑色)
    navC.navigationBar.barStyle = UIBarStyleBlack;

    // 為window設置根視圖控制器
    [self.window setRootViewController:navC];

    return YES;
    }

import "RootViewController.h"

import "SecondViewController.h"

@interface RootViewController ()

@end

@implementation RootViewController

// 視圖將要出現的時候
-(void)viewWillAppear:(BOOL)animated{
[super viewWillAppear:animated];
NSLog(@"Root___%@",self.navigationController.viewControllers);
}

  • (void)viewDidLoad {
    [super viewDidLoad];

    // 設置導航欄標題
    self.navigationItem.title = @"根視圖控制器";
    // 設置titleView（標題視圖）
    UILabel *titleLabel = [[UILabel alloc]initWithFrame:CGRectMake(0, 0, 300, 44)];
    titleLabel.text = @"titleView";
    titleLabel.backgroundColor = [UIColor greenColor];
    titleLabel.textAlignment = NSTextAlignmentCenter;
    self.navigationItem.titleView = titleLabel;
    // 為了下個界面的返回按鈕處沒有文字，在已經使用titleView的情況下，可以將標題設置為空字符串
    self.navigationItem.title = @"";
    // 設置navigationBar的右按鈕
    // <#(UIBarButtonSystemItem)#>:當前按鈕的系統樣式

    UIBarButtonItem *rightBtnItem = [[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(rightBarBtnAction:)];
    // 設置右側按鈕
    self.navigationItem.rightBarButtonItem = rightBtnItem;

    UIButton *pushBtn = [UIButton buttonWithType:UIButtonTypeSystem];
    [pushBtn setTitle:@"push" forState:UIControlStateNormal];
    pushBtn.frame = CGRectMake(100, 100, 100, 100);
    [pushBtn addTarget:self action:@selector(pushAction:) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:pushBtn];
    }

// 導航欄右側按鈕回調方法
-(void)rightBarBtnAction:(UIBarButtonItem*)sender{
// push到下個界面
SecondViewController *secondVC = [[SecondViewController alloc]init];
[self.navigationController pushViewController:secondVC animated:YES];
}

// 按鈕的回調方法，進入下一個界面
-(void)pushAction:(UIButton*)sender{
// 打印viewController，看一下當前被navC所管理的視圖控制器們
NSArray *viewCs = self.navigationController.viewControllers;
NSLog(@"%@",viewCs);
// 進入到下一個界面（為導航控制器新添加一個要被管理的視圖控制器）
SecondViewController *secondVC = [[SecondViewController alloc]init];

//  推送到下一個界面
/**
 *   pushViewController:將要顯示的視圖控制器
     animated:切換中是否需要動畫
     push的操作，就是將所要被管理的視圖控制器入棧，實際執行的動作就是：[self.navigationController.viewControllers addObjects:secondVC]在此處secondVC就會位于棧頂
     viewControllers：該屬性的返回類型為NSArray，但是我們一定得記得，viewControllers實際的類型是NSMutableArray。這里體現了面向對象多態的特性
 */
[self.navigationController pushViewController:secondVC animated:YES];
NSLog(@"push*****%@",self.navigationController.viewControllers);

//  得到當前位于棧頂的視圖控制器  viewControllers這個數組的最后一個元素，一般都在棧頂
NSLog(@"top____%@",self.navigationController.topViewController);

//  得到當前正在顯示的視圖控制器
NSLog(@"visible~~~~~~%@",self.navigationController.visibleViewController);

}

  • (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
    }

import "SecondViewController.h"

import "ThirdViewController.h"

@interface SecondViewController ()

@end

@implementation SecondViewController

  • (void)viewDidLoad {
    [super viewDidLoad];

    // 設置左邊按鈕
    UIBarButtonItem *leftBtnItem = [[UIBarButtonItem alloc]initWithTitle:@"Back" style:UIBarButtonItemStyleDone target:self action:@selector(leftBackBtnAction:)];
    self.navigationItem.leftBarButtonItem = leftBtnItem;

    UIButton *leftBtn = [UIButton buttonWithType:UIButtonTypeSystem];
    leftBtn.frame = CGRectMake(0, 0, 50, 50);
    [leftBtn setTitle:@"button" forState:UIControlStateNormal];
    // 當我們使用自定義視圖（UIView及其子類）作為導航條按鈕的時候，需要使用此初始化方法
    UIBarButtonItem *barItem = [[UIBarButtonItem alloc]initWithCustomView:leftBtn];

    // 定義一組左側按鈕
    self.navigationItem.leftBarButtonItems = @[barItem,leftBtnItem];

    UIButton *backBtn = [UIButton buttonWithType:UIButtonTypeSystem];
    [backBtn setFrame:CGRectMake(100, 100, 100, 100)];
    [backBtn setTitle:@"popBtn"
    forState:UIControlStateNormal];
    [backBtn addTarget:self
    action:@selector(popAction:)
    forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:backBtn];

UIButton *thirdBtn = [UIButton buttonWithType:UIButtonTypeSystem];
[thirdBtn setFrame:CGRectMake(100, 200, 100, 100)];
[thirdBtn setTitle:@"thirdBtn"
         forState:UIControlStateNormal];
[thirdBtn addTarget:self
            action:@selector(thirdAction:)
  forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:thirdBtn];

}

// 左邊按鈕的回調方法
-(void)leftBackBtnAction:(UIBarButtonItem*)sender{
[self.navigationController popToRootViewControllerAnimated:YES];
}

// 返回上級界面（出棧）
-(void)popAction:(UIButton*)sender{
// 出棧 實際所進行的操作是：[self.navigationController.viewControllers removeObject:self]
// 更準確的寫法：[self.navigationController.viewControllers removeObject:self.navigationController.viewControllers.lastObject]
// 在出棧之前打印當前navC過管理的視圖控制器
NSLog(@"pre ***%@",self.navigationController.viewControllers);
// [self.navigationController popViewControllerAnimated:YES];
// 返回到指定視圖控制器
[self.navigationController popToViewController:self.navigationController.viewControllers.firstObject animated:YES];
// 出棧之后，再次打印當前navC所管理的視圖控制器
NSLog(@"pop ~~~%@",self.navigationController.viewControllers);

}

// 跳轉到thirdVC
-(void)thirdAction:(UIButton*)sender{

ThirdViewController *thirdVC = [[ThirdViewController alloc]init];
[self.navigationController pushViewController:thirdVC animated:YES];

}

  • (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

import "ThirdViewController.h"

@interface ThirdViewController ()

@end

@implementation ThirdViewController

  • (void)viewDidLoad {
    [super viewDidLoad];

    UIButton *thirdBackBtn = [UIButton buttonWithType:UIButtonTypeSystem];
    [thirdBackBtn setFrame:CGRectMake(100, 200, 200, 100)];
    [thirdBackBtn setTitle:@"thirdBackRootBtn"
    forState:UIControlStateNormal];
    [thirdBackBtn addTarget:self
    action:@selector(thirdBackRootAction:)
    forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:thirdBackBtn];

}

-(void)thirdBackRootAction:(UIButton*)sender{
// 返回根視圖控制器
NSLog(@"third___%@",self.navigationController.viewControllers);
[self.navigationController popToRootViewControllerAnimated:YES];
NSLog(@"thirdPop___%@",self.navigationController.viewControllers);

}

  • (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

最后編輯于 ：
?著作權歸作者所有,轉載或內容合作請聯系作者
平臺聲明：文章內容（如有圖片或視頻亦包括在內）由作者上傳并發布，文章內容僅代表作者本人觀點，簡書系信息發布平臺，僅提供信息存儲服務。

推薦閱讀更多精彩內容