iOS導覽列使用

標籤：

xcode：6.3.2

ios8.3

介紹：在平時項目開發中，UINavigationController的使用非常廣泛，很多優秀的APP都採用了導覽列，導覽列對於視圖控制方面非常便捷。

先來看一張官方的圖

1，建立項目Nav

2，添加FirstViewController用於根視圖，添加SecondViewController用於根視圖跳轉到的視圖

3，在AppDelegate.m檔案中，修改代理，使得FirstViewController為根視圖，如下：

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {    FirstViewController *first = [[FirstViewController alloc] init];    UINavigationController *nav = [[UINavigationController alloc] initWithRootViewController:first];    [self.window setRootViewController:nav];    [self.window makeKeyAndVisible];    return YES;}

4，在FirstViewController.m中設定navigationController的相關屬性，如下：

- (void)viewDidLoad {    [super viewDidLoad];    self.view.backgroundColor = [UIColor redColor];    self.title = @"首頁"; //設定標題        [self.navigationController.navigationBar setBarTintColor:[UIColor purpleColor]];//設定navigationbar的顏色        [self.navigationController.navigationBar setTranslucent:YES];//設定navigationbar的半透明        self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemCamera target:self action:@selector(cameraStart)];//設定navigationbar左邊按鈕        self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAdd target:self action:@selector(toSecond)];//設定navigationbar右邊按鈕     }

樣式：

5，實現toSecond方法push到SecondViewController

- (void)toSecond {    SecondViewController *second = [[SecondViewController alloc] init];    [self.navigationController pushViewController:second animated:YES];}

6，在SecondViewController.m中添加按鈕，用於pop回FirstViewController，代碼如下

- (void)viewDidLoad {    [super viewDidLoad];    self.view.backgroundColor = [UIColor blueColor];        UIButton *button = [[UIButton alloc] initWithFrame:CGRectMake(100, 100, 200, 40)];    [button setTitle:@"返回" forState:UIControlStateNormal];    button.backgroundColor = [UIColor blackColor];    [button addTarget:self action:@selector(backToFirstViewController) forControlEvents:UIControlEventTouchUpInside];    [self.view addSubview:button];       // [self.navigationController.navigationBar setHidden:YES];}- (void)backToFirstViewController {    [self.navigationController popViewControllerAnimated:YES];   // [self.navigationController.navigationBar setHidden:NO];}

樣式如下：

7，隱藏navigationBar，開啟注釋，設定navigationBar隱藏，同時在返回FirstViewController的方法中讓navigationBar顯示回來

[self.navigationController.navigationBar setHidden:YES];

源碼地址：https://github.com/rokistar/UsingUINavigationController

iOS導覽列使用