一.控制器进栈、出栈生命周期
rootViewController 导航控制器的根控制器#import "RootController.h"
- (void)viewDidLoad {
[super viewDidLoad];
YMLogFunc;
}
-(void)viewWillAppear:(BOOL)animated{
[super viewWillAppear:animated];
YMLogFunc;
}
-(void)viewDidAppear:(BOOL)animated{
[super viewDidAppear:animated];
YMLogFunc;
}
-(void)viewWillDisappear:(BOOL)animated{
[super viewWillDisappear:animated];
YMLogFunc;
}
-(void)viewDidDisappear:(BOOL)animated{
[super viewDidDisappear:animated];
YMLogFunc;
}
第二次进栈的控制器#import "SecondController.h"
- (void)viewDidLoad {
[super viewDidLoad];
YMLogFunc;
}
-(void)viewWillAppear:(BOOL)animated{
[super viewWillAppear:animated];
YMLogFunc;
}
-(void)viewDidAppear:(BOOL)animated{
[super viewDidAppear:animated];
YMLogFunc;
}
-(void)viewWillDisappear:(BOOL)animated{
[super viewWillDisappear:animated];
YMLogFunc;
}
-(void)viewDidDisappear:(BOOL)animated{
[super viewDidDisappear:animated];
YMLogFunc;
}
首先看看当SecondController进栈后各种方法打印的顺序
2016-08-04 13:58:09.726 导航栏颜色[1521:104741] -[RootController viewDidLoad]
2016-08-04 13:58:09.726 导航栏颜色[1521:104741] -[RootController viewWillAppear:]
2016-08-04 13:58:09.735 导航栏颜色[1521:104741] -[RootController viewDidAppear:]
##2016-08-04 13:58:11.915 导航栏颜色[1521:104741] -[RootController viewWillDisappear:]
2016-08-04 13:58:11.971 导航栏颜色[1521:104741] -[SecondController viewDidLoad]
2016-08-04 13:58:11.971 导航栏颜色[1521:104741] -[SecondController viewWillAppear:]
## 2016-08-04 13:58:12.489 导航栏颜色[1521:104741] -[RootController viewDidDisappear:]
##2016-08-04 13:58:12.490 导航栏颜色[1521:104741] -[SecondController viewDidAppear:]
看看做标记的红色部分，在看看上一条和下一条。
再来看看当SecondController出栈各种方法打印的顺序
2016-08-04 14:04:02.922 导航栏颜色[1521:104741] -[SecondController viewWillDisappear:]
2016-08-04 14:04:02.922 导航栏颜色[1521:104741] -[RootController viewWillAppear:]
2016-08-04 14:04:03.424 导航栏颜色[1521:104741] -[SecondController viewDidDisappear:]
2016-08-04 14:04:03.424 导航栏颜色[1521:104741] -[RootController viewDidAppear:]
这里我就不多说了，RootController已经在栈里面，所以不会有viewDidLoad
二.常用的知识点总结
1.常用知识点
//设置导航栏颜色
self.navigationController.navigationBar.barTintColor = [UIColor greenColor];
//设置中间显示的标题
self.navigationItem.title = @"导航栏";
//self.title = @"导航栏"; 大家可以试试这个，结果怎么样自己试试，多动手，记得看看tabbaritem
//设置标题的属性，包括颜色，字体大小
NSMutableDictionary *attr = [NSMutableDictionary dictionary];
attr[NSFontAttributeName] = [UIFont systemFontOfSize:20];
attr[NSForegroundColorAttributeName] = [UIColor redColor];
self.navigationController.navigationBar.titleTextAttributes = attire;
526C2301-FA78-466A-890A-126FCD8DBFDD.png
//标题上面的图片
self.navigationItem.titleView = [[UIImageView alloc]initWithImage:[UIImage imageNamed:@"图片名字"]];
//背景图片
[self.navigationController.navigationBar setBackgroundImage: forBarMetrics:];
//注意点：按照设置的顺序从左边开始设置
self.navigationItem.leftBarButtonItem;
self.navigationItem.leftBarButtonItems;
//注意点：按照设置的顺序从右边开始设置
self.navigationItem.rightBarButtonItem;
self.navigationItem.rightBarButtonItems;
2.容易被忽视，但是很重要的知识点
//当tableView和scrollerView从导航栏下方开始设置时，用这句话。取消系统的自动设置，改为自己动手设置
self.automaticallyAdjustsScrollViewInsets = NO;
//向上滑动视图，导航栏将会隐藏，向下将会出现。这个方法大家可以自己有scrollerView代理方法写，我曾经就写过。当然最好用系统的，知道原理就好
self.navigationController.hidesBarsOnSwipe = YES;
//去掉导航栏下方的划线，大家可以试试
[self.navigationController.navigationBar setBackgroundImage:[UIImage new] forBarMetrics:UIBarMetricsDefault];
[self.navigationController.navigationBar setShadowImage:[UIImage new]];
这个方法不得不提，谁用谁知道，可以截取push controller从中可以干很多的事情
-(void)pushViewController:(UIViewController *)viewController animated:(BOOL)animated{
if (self.viewControllers.count > 0) {
viewController.hidesBottomBarWhenPushed = YES;在push的时候隐藏tabbar
}
[super pushViewController:viewController animated:animated];
}
自定义导航栏左右两边的点击按钮
UIButton*back = [UIButton buttonWithType:UIButtonTypeCustom];
back.size = CGSizeMake(70, 30);
[back setTitle:@"返回" forState:UIControlStateNormal];
[back setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
[back setTitleColor:[UIColor redColor] forState:UIControlStateHighlighted];
[back setImage:[UIImage imageNamed:@"图片名"] forState:UIControlStateNormal];
[back setImage:[UIImage imageNamed:@"图片名"] forState:UIControlStateHighlighted];
[back addTarget:self action:@selector(back) forControlEvents:UIControlEventTouchUpInside];
back.contentHorizontalAlignment = UIControlContentHorizontalAlignmentLeft;
back.contentEdgeInsets = UIEdgeInsetsMake(0, -10, 0, 0);
//自定义的view作为buttonItem
viewController.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc]initWithCustomView:back];
引用
http://www.jianshu.com/p/d0f354aa4d0d
http://www.jianshu.com/p/fff775bed8d9
http://www.jianshu.com/p/55ca07d7e543
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