AppDelegate.m
//创建window
//20状态栏+ 44导航栏
self.window= [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
self.window.backgroundColor= [UIColor whiteColor];
[self.window makeKeyAndVisible];
导航栏
//初始化视图控制器
//名字要一致NowViewController
NowViewController * vc = [[NowViewController alloc] init];
//导航控制器把vc设置为导航控制器的根视图
UINavigationController * Nav = [[UINavigationController alloc] initWithRootViewController:vc];
//把导航控制器赋值给当前window的跟视图以此来管理放在导航控制器上的视图(ViewController)
self.window.rootViewController = Nav;
//当前导航标题要设置在"当前"
//[vc setTitle:@"first"];
NowViewController.m
//当前导航标题要设置在"当前"
self.title=@"first";
UIButton *btn = [[UIButton alloc] initWithFrame:CGRectMake(10, 100, 60, 30)];
[btn setTitle:@"push" forState:UIControlStateNormal];
btn.backgroundColor= [UIColorblueColor];
btn.layer.cornerRadius= 10;
[self.view addSubview:btn];
[btn addTarget:self action:@selector(push) forControlEvents:UIControlEventTouchUpInside];
}
//视图将要出现
-(void)viewWillDisappear:(BOOL)animated {
//yes
self.navigationController.navigationBarHidden=NO;
}
//视图将要消失的方法
//-(void)viewWillDisappear:(BOOL)animated {
// //no
// self.navigationController.navigationBarHidden = NO;
//}
- (void)push {
//视图控制器的跳转方式:
//1.导航:压栈出栈
//2.模态:弹出消失
NowViewController1 * vc = [[NowViewController1 alloc] init];
//压栈
[self.navigationController pushViewController:vc animated:YES];
//[vc setTitle:@"second"];
}
NowViewController1.m
self.title=@"second";
//解决push的时候会有1s左右的灰色阴影
self.view.backgroundColor= [UIColor whiteColor];
//隐藏导航标题。导航栏隐藏属性如果当前页面消失的时候没有设置为no的话,那么在下一级页面也是隐藏的:解决办法:在当前页面将要消失的方法中把导航栏隐藏属性设置为no
self.navigationController.navigationBarHidden=NO;
//出栈按钮
UIButton * pop = [[UIButton alloc] initWithFrame:CGRectMake(10, 100, 60, 30)];
pop.backgroundColor= [UIColororangeColor];
[pop setTitle:@"pop" forState:UIControlStateNormal];
pop.layer.cornerRadius= 10;
[pop addTarget:self action:@selector(pop) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:pop];
UIButton * btn = [[UIButton alloc] initWithFrame:CGRectMake(100, 100, 60, 30)];
btn.backgroundColor= [UIColor orangeColor];
[btn setTitle:@"push" forState:UIControlStateNormal];
btn.layer.cornerRadius= 10;
[btn addTarget:selfaction:@selector(push) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:btn];
}
- (void)pop {
//出栈
//出栈到根视图控制器
//[self.navigationController popToRootViewControllerAnimated:YES];
//回到上一级页面:(导航中的页面)
[self.navigationController popViewControllerAnimated:YES];
}
- (void)push {
NowViewController2 * third = [[NowViewController2 alloc] init];
[self.navigationController pushViewController:third animated:YES];
}
//导航按钮
//右边
//UIBarButtonSystemItemAdd 可选按钮样式
UIBarButtonItem *item = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAdd target:self action:@selector(rightItem)];
//赋值给导航栏
self.navigationItem.rightBarButtonItem= item;
//设置当前bar的颜色
item.tintColor= [UIColor redColor];
//左边
UIBarButtonItem *item1 = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemCamera target:selfaction:@selector(leftItem)];
self.navigationItem.leftBarButtonItem= item1;
item1.tintColor= [UIColorredColor];
- (void)rightItem {
NSLog(@"模态");
//模态
NowViewController3 *tvc = [[NowViewController3 alloc] init];
//模态出来一个页面
//[self presentModalViewController:tvc animated:YES]; ios6.0以前使用
//弹出模态(从下往上)
[self presentViewController:tvc animated:YES completion:nil];
}
- (void)dismiss {
//模态对应的模态消失的方法
[self dismissViewControllerAnimated:YES completion:nil];
}
//设置导航栏背景色
//self.navigationController.navigationBar.barTintColor = [UIColor colorWithRed:85/225.0 green:105/225.0 blue:77/225.0 alpha:0.2];
//消除导航栏的东西
//[self.navigationController.navigationBar setBackgroundImage:[UIImage new] forBarMetrics:0];
//消除导航栏下的分隔线
//self.navigationController.navigationBar.shadowImage= [UIImage new];
