Day-03

第一节 UINavigationController

1. UINavigationController基本知识

1>继承（UIViewController）
2>高度（64）
3>层级

2.UINavigationController创建

self.window = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];
FirestViewController *firstVc = [[FirestViewController alloc] init];  UINavigationController *nav = [[UINavigationController alloc]   initWithRootViewController:firstVc];（底层  [nav  pushViewController:firstVc animated:YES];）
self.window.rootViewController = nav;
[self.window makeKeyAndVisible];

3.UINavigationController创建

//设置导航栏标题（导航控制器最顶层控制器）
self.navigationItem.title = @"第一个控制器";
//设置导航栏按钮内容文本
 UIBarButtonItem *rightBarButtonIteam = [[UIBarButtonItem alloc] initWithTitle:@"右侧按钮" style:UIBarButtonItemStylePlain target:self action:@selector(rightClick)];
self.navigationItem.rightBarButtonItem = rightBarButtonIteam;
 //设置导航栏按钮内容图片 iOS7之后，系统默认会把导航栏h上的图片渲染成蓝色，设置UIImage属性可以改变 UIImage *iteamImage = [UIImage imageNamed:@"icon-test-2"];
    iteamImage =  [iteamImage imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
 UIBarButtonItem *leftBarButtonIteam = [[UIBarButtonItem alloc] initWithImage:iteamImage style:UIBarButtonItemStylePlain target:self action:@selector(leftClick)]; self.navigationItem.leftBarButtonItem = leftBarButtonIteam;
 //自定义导航栏内容
 UIImage *subIteamImage = [UIImage imageNamed:@"icon-test-3"];
    subIteamImage =  [subIteamImage imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
 UIButton *leftButtonIteamCustom = [UIButton buttonWithType:UIButtonTypeCustom]; leftButtonIteamCustom.frame = CGRectMake(0, 0, 35, 35);   [leftButtonIteamCustom setBackgroundImage:subIteamImage forState:UIControlStateNormal];
 [leftButtonIteamCustom setBackgroundImage:iteamImage forState:UIControlStateHighlighted];
    
 UIBarButtonItem *leftBarButtonIteamCustom  = [[UIBarButtonItem alloc] initWithCustomView:leftButtonIteamCustom];
    self.navigationItem.leftBarButtonItem = leftBarButtonIteamCustom;

第二节 UIViewController 的生命周期

1.storyboard创建UINavigationController\UIViewController以及导航栏内容的设置、控制器的跳转。
2.生命周期

/*ARC
控制器生命周期：viewDodload ->viewWillAppear->viewWillLayoutSubviews->viewDidLayoutSubviews->viewDidAppare->viewWillDisappear->viewDidDisappear
非ARC viewWillUnload->viewDidUnload
*/
//控制器的view加载完成的时候调用
- (void)viewDidLoad {
[super viewDidLoad];
NSLog(@"%s",__func__);
}
//控制器view即将显示的时候调用
-(void)viewWillAppear:(BOOL)animated{
[super viewWillAppear:animated];
NSLog(@"%s",__func__);
}
//控制器view完全显示的时候调用
-(void)viewDidAppear:(BOOL)animated{
[super viewDidAppear:animated];
NSLog(@"%s",__func__);
}
//控制器view即将消失的时候调用
-(void)viewWillDisappear:(BOOL)animated{
[super viewWillDisappear:animated];
NSLog(@"%s",__func__);
}
//控制器view完全消失的时候调用
-(void)viewDidDisappear:(BOOL)animated{
[super viewDidDisappear:animated];
NSLog(@"%s",__func__);
}
//控制器view即将布局子控件的时候调用
-(void)viewWillLayoutSubviews{
[super viewWillLayoutSubviews];
NSLog(@"%s",__func__);
}
//控制器view布局子控件完成的时候调用
-(void)viewDidLayoutSubviews{
[super viewDidLayoutSubviews];
NSLog(@"%s",__func__);
}
//当前控制器收到内存警告的时候调用
-(void)didReceiveMemoryWarning{
[super didReceiveMemoryWarning];
}

第四节微博个人信息案例

1.storyboard设置UINavigationController以及设置根控制器
2.storyboard设置UITableViewController控制器
3.设置tableview的透视图（tableHeaderView）
设置导航栏额外滚动区域

（if(@available(iOS 11.0, *)) {self.tableView.contentInsetAdjustmentBehavior= UIScrollViewContentInsetAdjustmentNever;
    }else{self.automaticallyAdjustsScrollViewInsets= NO;}）

4.设置导航栏自定义标题（titleView）
5.设置导航栏透明（

//设置导航栏透明[self.navigationController.navigationBarsetBackgroundImage:[UIImagenew] forBarMetrics:UIBarMetricsDefault];
 //设置导航栏下划线透明
[self.navigationController.navigationBarsetShadowImage:[UIImagenew]];）