// // ViewController.m // UI2_UINavigationBar // // Created by zhangxueming on 15/7/6. // Copyright (c) 2015年 zhangxueming. All rights reserved. // #import "ViewController.h" #import "SubViewController.h" @interface ViewController () @end @implementation ViewController - (void)viewWillAppear:(BOOL)animated { [super viewWillAppear:animated]; //获取导航条(视图) //self.navigationController.navigationBar //导航条的高度是44(竖屏) //横屏模式高度是32 NSLog(@"bar = %@", self.navigationController.navigationBar); NSLog(@"view = %@", self.view); //隐藏导航条 self.navigationController.navigationBar.hidden = YES; //[self.navigationController setNavigationBarHidden:NO animated:NO]; } - (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view, typically from a nib. self.view.backgroundColor = [UIColor cyanColor]; //设置背景图片 //人像模式(竖屏) UIBarMetricsDefault, //风景模式(横屏) UIBarMetricsCompact //图片命名 //普通 navigationBar.png //高分屏navigationBar@2x.png //设置了导航条的背景图片后, 对应的视图控制器的视图的高度被发生变化, 竖屏(0, 64) 横屏(0,32) self.navigationController.navigationBar.barStyle = UIBarStyleBlack; self.navigationController.navigationBar.backgroundColor = [UIColor redColor]; self.navigationController.navigationBar.tintColor = [UIColor redColor]; [self.navigationController.navigationBar setBackgroundImage:[UIImage imageNamed:@"navigationBar@2x"] forBarMetrics:UIBarMetricsDefault]; //横屏背景图片 [self.navigationController.navigationBar setBackgroundImage:[UIImage imageNamed:@"navigationBarCompact@2x"] forBarMetrics:UIBarMetricsCompact]; UIButton *btn = [UIButton buttonWithType:UIButtonTypeSystem]; btn.frame = CGRectMake(100, 200, self.view.frame.size.width-200, 50); [btn setTitle:@"按钮" forState:UIControlStateNormal]; btn.titleLabel.font = [UIFont boldSystemFontOfSize:24]; [btn addTarget:self action:@selector(btnClicked) forControlEvents:UIControlEventTouchUpInside]; [self.view addSubview:btn]; } - (void)btnClicked { SubViewController *svc= [[SubViewController alloc] init]; [self.navigationController pushViewController:svc animated:YES]; } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated. } @end
// // SubViewController.m // UI2_UINavigationBar // // Created by zhangxueming on 15/7/6. // Copyright (c) 2015年 zhangxueming. All rights reserved. // #import "SubViewController.h" @interface SubViewController () @end @implementation SubViewController - (void)viewWillAppear:(BOOL)animated { [super viewWillAppear:animated]; NSLog(@"bar = %@", self.navigationController.navigationBar); NSLog(@"view = %@", self.view); self.navigationController.navigationBar.hidden = NO; } - (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view. self.view.backgroundColor= [UIColor yellowColor]; } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated. } /* #pragma mark - Navigation // In a storyboard-based application, you will often want to do a little preparation before navigation - (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender { // Get the new view controller using [segue destinationViewController]. // Pass the selected object to the new view controller. } */ @end
转载于:https://www.cnblogs.com/0515offer/p/4638690.html
