iPhone开发【九】多视图技术总结之二:Tab Bar
AppDelegate .m主要修改didFinishLaunchingWithOptions方法,修改后如下: 8、修改FirstViewController.m,初始化时设置tabBarItem的title 和显示的图片,仅修改方法initWithNibName,如下: 9、依照 上步修改SecondViewController.m,如下: 10、编译、运行,效果如下
发布日期:2021-09-28 18:46:14
浏览次数:10
分类:技术文章
本文共 4647 字,大约阅读时间需要 15 分钟。
转载请注明出处,原文网址: 作者:张燕广
最近很忙,但是仍然想坚持写完想写的内容,坚持!
实现的功能:通过Tab Bar,实现多视图切换。
关键词:多视图 Tab Bar
1、创建一个Empty Application工程,命名为:MultiView-Tab,如下图
2、选中工程中的Group MultiView-Tab,然后按住CMD(Windows键)+N,新建视图控制器FirstViewController,如下图
3、依照上步操作,新建视图控制器SecondViewController
4、编辑FirstViewController.xib,在Bottom Bar显示出Tab Bar,然后添加一个Lable,如下图
5、依照上部操作,设置SecondViewController.xib
6、新建Group,名称为:Images,添加4张png图片
7、万事俱备,开始写代码,首先修改AppDelegate,添加一个UITabBarController类的实例,作为根视图控制器用。
AppDelegate.h修改后如下:
- //
- // AppDelegate.h
- // MultiView-Tab
- //
- // Created by Zhang Yanguang on 12-11-20.
- // Copyright (c) 2012年 MyCompanyName. All rights reserved.
- //
- #import <UIKit/UIKit.h>
- #import "FirstViewController.h"
- #import "SecondViewController.h"
- @interface AppDelegate : UIResponder <UIApplicationDelegate>
- @property (strong, nonatomic) UIWindow *window;
- //添加代码
- @property(strong,nonatomic) UITabBarController *tabBarController;
- @end
- //
- // AppDelegate.m
- // MultiView-Tab
- //
- // Created by Zhang Yanguang on 12-11-20.
- // Copyright (c) 2012年 MyCompanyName. All rights reserved.
- //
- #import "AppDelegate.h"
- @implementation AppDelegate
- @synthesize window = _window;
- //添加代码
- @synthesize tabBarController;
- - (void)dealloc
- {
- [_window release];
- [super dealloc];
- }
- - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
- {
- self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];
- // Override point for customization after application launch.
- //添加代码
- //初始化firstViewController
- UIViewController *firstViewController = [[[FirstViewController alloc]initWithNibName:@"FirstViewController" bundle:nil] autorelease];
- //初始化secondViewController
- UIViewController *secondViewController = [[[SecondViewController alloc]initWithNibName:@"SecondViewController" bundle:nil] autorelease];
- self.tabBarController = [[[UITabBarController alloc]init] autorelease];
- self.tabBarController.viewControllers = [NSArray arrayWithObjects:firstViewController,secondViewController, nil];
- //设置tabBarController为根视图控制器
- self.window.rootViewController = tabBarController;
- self.window.backgroundColor = [UIColor whiteColor];
- [self.window makeKeyAndVisible];
- return YES;
- }
- - (void)applicationWillResignActive:(UIApplication *)application
- {
- // Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
- // Use this method to pause ongoing tasks, disable timers, and throttle down OpenGL ES frame rates. Games should use this method to pause the game.
- }
- - (void)applicationDidEnterBackground:(UIApplication *)application
- {
- // Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later.
- // If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.
- }
- - (void)applicationWillEnterForeground:(UIApplication *)application
- {
- // Called as part of the transition from the background to the inactive state; here you can undo many of the changes made on entering the background.
- }
- - (void)applicationDidBecomeActive:(UIApplication *)application
- {
- // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
- }
- - (void)applicationWillTerminate:(UIApplication *)application
- {
- // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
- }
- @end
- - (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
- {
- self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
- if (self) {
- // Custom initialization
- self.title = @"First View";
- self.tabBarItem.image = [UIImage imageNamed:@"first"];
- }
- return self;
- }
- - (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
- {
- self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
- if (self) {
- // Custom initialization
- self.title = @"Second View";
- self.tabBarItem.image = [UIImage imageNamed:@"second"];
- }
- return self;
- }
总结:1)本文通过手工编写代码模拟了通过Tab Bar实现多视图切换;
2)Xcode提供了Tabbed Application模板,如下
基于该模板创建的工程就是Tab Bar实现的多视图应用程序,与本文实现的功能相同。
转载地址:https://blog.csdn.net/h3c4lenovo/article/details/8307261 如侵犯您的版权,请留言回复原文章的地址,我们会给您删除此文章,给您带来不便请您谅解!
发表评论
最新留言
很好
[***.229.124.182]2024年04月10日 06时05分55秒
关于作者
喝酒易醉,品茶养心,人生如梦,品茶悟道,何以解忧?唯有杜康!
-- 愿君每日到此一游!
推荐文章
javascript解析json
2019-04-27
WinDbg安装与使用
2019-04-27
推荐阅读的多核编程技术书籍
2019-04-27
维基百科上的算法和数据结构链接很强大
2019-04-27
选择排序
2019-04-27
PHP session回收机制
2019-04-27
最新的全球编程语言,操作系统,web服务器等使用率分析报告
2019-04-27
用C语言写PHP扩展
2019-04-27
PHP Extension programming
2019-04-27
海量数据处理
2019-04-27
PHP防止注入攻击
2019-04-27
多路IO复用模型 select epoll 等
2019-04-27
Linux Epoll介绍和程序实例
2019-04-27
output_buffering详细介绍
2019-04-27
php缓冲 output_buffering和ob_start
2019-04-27
php error_reporting 详解
2019-04-27
剖析PHP中的输出缓冲
2019-04-27
HTTP响应头不缓存
2019-04-27
phpize
2019-04-27
PHP安装eAccelerator
2019-04-27