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导航

【UINavigationController】

导航控制器

步骤

1，初始化

2，push 进入新视图

3，pop 返回

返回到指定视图

//通过导航控制器找到所有的界面

NSArray *controllers =self.navigationController.viewControllers;

//返回到固定界面（前提是要返回到的视图控制器对象存在）

[self.navigationController popToViewController:[controllers objectAtIndex:1] animated:YES];

【self.navigationController.navigationBar】

//[UINavigationBar appearance]这种方式也能找到navigationBar导航条。

【导航条的设置是针对整个导航的，会影响当前导航中的所有页面】

//导航条的隐藏状态

//self.navigationController.navigationBarHidden = YES;

@property(nonatomic,getter=isNavigationBarHidden) BOOL navigationBarHidden;

- (void)setNavigationBarHidden:(BOOL)hidden animated:(BOOL)animated;

//导航条的背景色

@property(nonatomic,retain) UIColor *barTintColor;

//内容渲染颜色

@property(nonatomic,retain) UIColor *tintColor;

//是否半透明(这个设置对起始坐标点{0,0}的影响权限最高)

@property(nonatomic,assign,getter=isTranslucent) BOOL translucent;

//背景图

- (void)setBackgroundImage:(UIImage *)backgroundImage forBarMetrics:(UIBarMetrics)barMetrics;

【UIBarButtonItem】

//导航条专用按钮

//四种创建方式

- (id)initWithTitle:(NSString *)title style:(UIBarButtonItemStyle)style target:(id)target action:(SEL)action;

- (id)initWithImage:(UIImage *)image style:(UIBarButtonItemStyle)style target:(id)target action:(SEL)action;

- (id)initWithBarButtonSystemItem:(UIBarButtonSystemItem)systemItem target:(id)target action:(SEL)action;

- (id)initWithCustomView:(UIView *)customView;

//UIBarButtonSystemItemFlexibleSpace，是自带的一种空的item，可以当作占位符用

【self.navigationItem】

//给导航条设置专用按钮和titleView

//title

@property(nonatomic,copy) NSString *title;

//中间的view

@property(nonatomic,retain) UIView *titleView;

//隐藏自带的返回按钮

@property(nonatomic,assign) BOOL hidesBackButton;

- (void)setHidesBackButton:(BOOL)hidesBackButton animated:(BOOL)animated;

//左边和右边的专用按钮

@property(nonatomic,retain) UIBarButtonItem *leftBarButtonItem;

@property(nonatomic,retain) UIBarButtonItem *rightBarButtonItem;

- (void)setLeftBarButtonItem:(UIBarButtonItem *)item animated:(BOOL)animated;

- (void)setRightBarButtonItem:(UIBarButtonItem *)item animated:(BOOL)animated;

//左边和右边的专用按钮组（数组中存放的是UIBarButtonItem）

@property(nonatomic,copy) NSArray *leftBarButtonItems;

@property(nonatomic,copy) NSArray *rightBarButtonItems;

- (void)setLeftBarButtonItems:(NSArray *)items animated:(BOOL)animated;

- (void)setRightBarButtonItems:(NSArray *)items animated:(BOOL)animated;

【self.navigationController.toolbar】工具条

//每个导航控制器都自带有一个工具栏，是一个UIToolBar的对象,显示在最底部，尺寸（320*44）,工具栏默认处于隐藏状态

//注意：自带的这个工具条一般情况下都不用。如果要用的话我们会自己创建一个新的UIToolBar

//工具条隐藏状态

//self.navigationController.toolbarHidden = NO;

@property(nonatomic,getter=isToolbarHidden) BOOL toolbarHidden;

- (void)setToolbarHidden:(BOOL)hidden animated:(BOOL)animated;

//背景色

@property(nonatomic,retain) UIColor *barTintColor;

//内容渲染颜色

@property(nonatomic,retain) UIColor *tintColor;

//是否半透明

@property(nonatomic,assign,getter=isTranslucent) BOOL translucent;

【上面的属性和navigationBar的使用方式一样】

//设置背景图片

- (void)setBackgroundImage:(UIImage *)backgroundImage forToolbarPosition:(UIBarPosition)topOrBottom barMetrics:(UIBarMetrics)barMetrics;

//UIBarPosition中的枚举值只支持iOS7

//UIToolbarPositionBottom(在iOS7和7以前的操作系统都适用)

//UIToolbarPositionBottom 理解（每个UIView都可以指定TopBar 和BottomBar）,导航控制器中工具栏是作为导航控制器view的BottomBar被自动创建出来的

给toolBar设置专用button(数组中也是UIBarButtonItem)

//让viewController直接设置

//self.toolbarItems = array;

@property (nonatomic, retain) NSArray *toolbarItems;

- (void)setToolbarItems:(NSArray *)toolbarItems animated:(BOOL)animated;

#import "AppDelegate.h"

#import "FirstViewController.h"

@implementation AppDelegate

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions

{

self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];

// Override point for customization after application launch.

//创建一个页面

FirstViewController *fvc = [[FirstViewController alloc] init];

//使用一个页面创建一个导航控制器

UINavigationController *nc = [[UINavigationController alloc] initWithRootViewController:fvc];

//将导航控制器和window关联

self.window.rootViewController = nc;

self.window.backgroundColor = [UIColor whiteColor];

[self.window makeKeyAndVisible];

return YES;

}

#import "FirstViewController.h"

#import "SecondViewController.h"

@interface FirstViewController ()

@end

@implementation FirstViewController

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil

{

self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];

if (self) {

// Custom initialization

}

return self;

}

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event

{

SecondViewController *svc = [[SecondViewController alloc] init];

//通过页面找到nc，让nc推出一个新的页面

[self.navigationController pushViewController:svc animated:YES];

}

- (void)viewDidLoad

{

[super viewDidLoad];

// Do any additional setup after loading the view.

self.view.backgroundColor = [UIColor redColor];

[self setNavigationBar];

}

- (void)setNavigationBar

{

//设置导航条的隐藏状态（导航条是属于导航控制器的）

self.navigationController.navigationBarHidden = NO;

//通过页面找到nc，通过nc找到导航条

//对导航条的设置是针对整个nc的

//self.navigationController.navigationBar

//设置背景色

self.navigationController.navigationBar.barTintColor = [UIColor brownColor];

//设置导航条内容（比如说自带的返回按钮）的渲染色

self.navigationController.navigationBar.tintColor = [UIColor purpleColor];

//设置半透明状态，如果写成NO，那么坐标{0,0}的位置是导航条的左下角

//如果写成YES，坐标{0,0}的位置在左上角

//在iOS7以前状态栏的高度是20，导航条高度是44，分开计算的

//从iOS7开始，合并计算高度为64

self.navigationController.navigationBar.translucent = NO;

//设置背景图片，如果图片的大小是320*44（640*88）就会显示成iOS7之前风格

//如果图片的大小不是320*44（640*88），就会用新风格并且平铺

//在主流的设计中，图片的大小需要和导航条匹配（320*64）

[self.navigationController.navigationBar setBackgroundImage:[UIImage imageNamed:@"aa"] forBarMetrics:UIBarMetricsDefault];

//设置整个导航中，导航条上title的文字属性，属性是通过字典来设置的

//字典里放的就是文字属性的键值对

self.navigationController.navigationBar.titleTextAttributes = [NSDictionary dictionaryWithObjectsAndKeys:[UIFont systemFontOfSize:10], NSFontAttributeName, [UIColor greenColor], NSForegroundColorAttributeName, nil];

}

#import "SecondViewController.h"

#import "ThirdViewController.h"

@interface SecondViewController ()

@end

@implementation SecondViewController

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil

{

self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];

if (self) {

// Custom initialization

}

return self;

}

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event

{

ThirdViewController *tvc = [[ThirdViewController alloc] init];

[self.navigationController pushViewController:tvc animated:YES];

}

- (void)viewDidLoad

{

[super viewDidLoad];

// Do any additional setup after loading the view.

self.view.backgroundColor = [UIColor orangeColor];

UIButton *btn = [UIButton buttonWithType:UIButtonTypeSystem];

btn.frame = CGRectMake(60, 70, 100, 40);

btn.backgroundColor = [UIColor grayColor];

[btn setTitle:@"返回" forState:UIControlStateNormal];

[btn addTarget:self action:@selector(backClick) forControlEvents:UIControlEventTouchUpInside];

[self.view addSubview:btn];

[self setNavigationItem];

}

- (void)setNavigationItem

{

//设置显示在导航条上的title，针对于当前页面的

//下一个页面自带的返回按钮上的文字就是当前页的title

self.navigationItem.title = @"oyeah~";

//设置当前页面显示在导航条上的元素

//self.navigationItem

UILabel *tView = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 60, 30)];

tView.backgroundColor = [UIColor magentaColor];

tView.text = @"gogo";

tView.textAlignment = NSTextAlignmentCenter;

//设置当前页面在导航条中间显示的view

self.navigationItem.titleView = tView;

//隐藏自带的返回按钮

self.navigationItem.hidesBackButton = YES;

/**********下面是专用按钮的四种创建方法*************/

//1，使用文字创建一个专用按钮

UIBarButtonItem *abbi = [[UIBarButtonItem alloc] initWithTitle:@"ab" style:UIBarButtonItemStyleDone target:self action:@selector(click)];

//设置当前页面中显示在导航条左边的专用按钮

self.navigationItem.leftBarButtonItem = abbi;

//设置专用按钮上的文字属性（这个设置只对abbi生效）

[abbi setTitleTextAttributes:[NSDictionary dictionaryWithObjectsAndKeys:[UIFont systemFontOfSize:30], NSFontAttributeName, [UIColor blackColor], NSForegroundColorAttributeName, nil] forState:UIControlStateNormal];

//2，使用图片创建专用按钮(只取图片的形状，不取颜色)

UIBarButtonItem *bbbi = [[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:@"logo_title"] style:UIBarButtonItemStyleDone target:self action:@selector(click)];

//设置当前页面中显示在导航条右边的专用按钮

// self.navigationItem.rightBarButtonItem = bbbi;

//3，使用系统自带的图标创建专用按钮

UIBarButtonItem *cbbi = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemTrash target:self action:@selector(click)];

// self.navigationItem.rightBarButtonItem = cbbi;

//有一个btn

UIButton *btn = [UIButton buttonWithType:UIButtonTypeContactAdd];

[btn addTarget:self action:@selector(click) forControlEvents:UIControlEventTouchUpInside];

//4，使用自定义的view来创建专用按钮（一般都是用btn）

UIBarButtonItem *dbbi = [[UIBarButtonItem alloc] initWithCustomView:btn];

// self.navigationItem.rightBarButtonItem = dbbi;

//设置右边的一组专用按钮

self.navigationItem.rightBarButtonItems = [NSArray arrayWithObjects:bbbi, cbbi, dbbi, nil];

}

- (void)click

{

NSLog(@"%s",__func__);

}

- (void)backClick

{

//通过页面找到nc，让nc返回到上一面（效果和原理都跟nc自带的返回按钮一样）

[self.navigationController popViewControllerAnimated:YES];

}

#import "ThirdViewController.h"

#import "ForthViewController.h"

@interface ThirdViewController ()

@end

@implementation ThirdViewController

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil

{

self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];

if (self) {

// Custom initialization

}

return self;

}

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event

{

ForthViewController *fvc = [[ForthViewController alloc] init];

[self.navigationController pushViewController:fvc animated:YES];

}

- (void)viewDidLoad

{

[super viewDidLoad];

// Do any additional setup after loading the view.

self.view.backgroundColor = [UIColor yellowColor];

UIButton *btn = [UIButton buttonWithType:UIButtonTypeSystem];

btn.frame = CGRectMake(60, 70, 100, 40);

btn.backgroundColor = [UIColor grayColor];

[btn setTitle:@"返回" forState:UIControlStateNormal];

[btn addTarget:self action:@selector(backClick) forControlEvents:UIControlEventTouchUpInside];

[self.view addSubview:btn];

}

- (void)backClick

{

//返回到根（沿途所有页面全部销毁）

[self.navigationController popToRootViewControllerAnimated:YES];

}

- (void)viewWillAppear:(BOOL)animated

{

NSLog(@"%s",__func__);

}

- (void)viewDidAppear:(BOOL)animated

{

NSLog(@"%s",__func__);

}

- (void)viewWillDisappear:(BOOL)animated

{

NSLog(@"%s",__func__);

}

- (void)viewDidDisappear:(BOOL)animated

{

NSLog(@"%s",__func__);

}

#import "ForthViewController.h"

@interface ForthViewController ()

@end

@implementation ForthViewController

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil

{

self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];

if (self) {

// Custom initialization

NSLog(@"%s",__func__);

}

return self;

}

- (void)viewWillAppear:(BOOL)animated

{

NSLog(@"%s",__func__);

}

- (void)viewDidAppear:(BOOL)animated

{

NSLog(@"%s",__func__);

}

- (void)viewWillDisappear:(BOOL)animated

{

NSLog(@"%s",__func__);

}

- (void)viewDidDisappear:(BOOL)animated

{

NSLog(@"%s",__func__);

}

- (void)dealloc

{

NSLog(@"%s",__func__);

}

- (void)viewDidLoad

{

[super viewDidLoad];

// Do any additional setup after loading the view.

NSLog(@"%s",__func__);

self.view.backgroundColor = [UIColor greenColor];

UIButton *btn = [UIButton buttonWithType:UIButtonTypeSystem];

btn.frame = CGRectMake(60, 70, 100, 40);

btn.backgroundColor = [UIColor grayColor];

[btn setTitle:@"返回" forState:UIControlStateNormal];

[btn addTarget:self action:@selector(backClick) forControlEvents:UIControlEventTouchUpInside];

[self.view addSubview:btn];

}

- (void)backClick

{

//找到当前导航控制器里所有的页面

NSArray *viewControllerArr = self.navigationController.viewControllers;

//找到固定的页面，用父类指针指向

UIViewController *orVC = [viewControllerArr objectAtIndex:1];

//让nc回到固定页面（必须是在nc中已经存在的，同时沿途所有页面销毁）

[self.navigationController popToViewController:orVC animated:YES];

}

posted on 2014-03-20 20:47 Sinner_Yun 阅读(358) 评论(0) 编辑收藏举报

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