[iOS UI进阶 - 2.0] 彩票Demo v1.0

浏览数：18 / 时间：2015年06月11日

A.需求

1.模仿“网易彩票”做出有5个导航页面和相应功能的Demo

2.v1.0 版本搭建基本框架

B.搭建基本框架

1.拖入TaBarController，5个NavigationController和对应的5个UIViewController

2.配置图标和启动画面

AppIcon直接拖入图片

LaunchImage在Xcode6中需要先更改启动图使用图库的图片，而不是LaunchImage.xib

2.引入图片包

4. 按照模块分类代码包

3.底部导航--自定义TabBar

（1）基本设计

a.自定义HVWTabBarController、继承自UIView的HVWTabBar、继承UIButton的HVWTabBarButton

b.在自定义TabBar控制器viewDidLoad，删除原来的TabBar，加上自定义的TabBar

c.加入自定义的按钮图片、选中图片

d.选中事件，转换图片

e.按下马上激发按钮激发

重写TabBarButton的[button setHighlighted:]取消高亮状态

HVWTabBarButton:

1 // 覆盖setHighlighted,取消点击时的高亮状态
2 - (void)setHighlighted:(BOOL)highlighted {
3 //    [super setHighlighted:highlighted];
4 }

初步实现都在HVWTabBarController的viewDidLoad方法中:

 1 - (void)viewDidLoad {
 2     [super viewDidLoad];
 3     // Do any additional setup after loading the view.
 4    
 5     // 1.删除原来的TabBar
 6     [self.tabBar removeFromSuperview];
 7    
 8     // 2.添加自定义TabBar
 9     HVWTabBar *hvwTabBar = [[HVWTabBar alloc] init];
10     hvwTabBar.frame = self.tabBar.frame;
11     hvwTabBar.backgroundColor = [UIColor greenColor]; // 设置绿色底的tabBar，稍后会被按钮图片覆盖
12     [self.view addSubview:hvwTabBar];
13    
14     // 3.添加按钮
15     for (int i=0; i<5; i++) {
16         // 3.1创建按钮
17         HVWTabBarButton *button = [HVWTabBarButton buttonWithType:UIButtonTypeCustom];
18         button.tag = i;
19 
20         // 3.2设置按钮背景图片
21         [button setBackgroundImage:[UIImage imageNamed:[NSString stringWithFormat:@"TabBar%d", i+1]] forState:UIControlStateNormal];
22        
23         [button setBackgroundImage:[UIImage imageNamed:[NSString stringWithFormat:@"TabBar%dSel", i+1]]  forState:UIControlStateSelected];
24        
25         // 3.3设置frame
26         CGFloat buttonWidth = hvwTabBar.frame.size.width / 5;
27         CGFloat buttonHeight = hvwTabBar.frame.size.height;
28         CGFloat buttonX = i * buttonWidth;
29         CGFloat buttonY = 0;
30         button.frame = CGRectMake(buttonX, buttonY, buttonWidth, buttonHeight);
31        
32         // 3.4添加到tabBar
33         [hvwTabBar addSubview:button];
34        
35         // 3.5添加监听事件
36         [button addTarget:self action:@selector(tabBarButtonClicked:) forControlEvents:UIControlEventTouchUpInside];
37        
38         // 3.6默认已经点击了第一个按钮
39         if (i == 0) {
40             [self tabBarButtonClicked:button];
41         }
42     }
43 }
44 
45 - (void) tabBarButtonClicked:(HVWTabBarButton *) button {
46     // 1.取消选中之前的按钮
47     self.selectedButton.selected = NO;
48    
49     // 2.选中新点击的按钮
50     button.selected = YES;
51    
52     // 3.设置为当前选中的按钮
53     self.selectedButton = button;
54    
55     // 4.切换子控制器
56     self.selectedIndex = button.tag;
57 }

（2）封装TabBar代码

a.重写initWithFrame:创建初始化TabBar

b.移动子控件的初始化代码到layoutSubviews

c.通过代理转换Navigation页面

d.封装添加按钮函数

 1 //
 2 //  HWTabBarController.m
 3 //  HelloLottery
 4 //
 5 //  Created by hellovoidworld on 14/12/31.
 6 //  Copyright (c) 2014年 hellovoidworld. All rights reserved.
 7 //
 8 
 9 #import "HvWTabBarController.h"
10 #import "HVWTabBar.h"
11 #import "HVWTabBarButton.h"
12 
13 @interface HVWTabBarController () <HVWTabBarDelegate>
14 
15 @end
16 
17 @implementation HVWTabBarController
18 
19 - (void)viewDidLoad {
20     [super viewDidLoad];
21     // Do any additional setup after loading the view.
22    
23     // 1.删除原来的TabBar
24     [self.tabBar removeFromSuperview];
25    
26     // 2.添加自定义TabBar
27     HVWTabBar *hvwTabBar = [[HVWTabBar alloc] init];
28     hvwTabBar.frame = self.tabBar.frame;
29     hvwTabBar.backgroundColor = [UIColor greenColor]; // 设置绿色底的tabBar，稍后会被按钮图片覆盖
30     hvwTabBar.delegate = self;
31     [self.view addSubview:hvwTabBar];
32 }
33 
34 - (void)didReceiveMemoryWarning {
35     [super didReceiveMemoryWarning];
36     // Dispose of any resources that can be recreated.
37 }
38 
39 #pragma mark - HVWTabBarDelegate 代理方法
40 - (void)hvwTabBar:(HVWTabBar *)hvwTabBar didClickedButtonFrom:(int)from to:(int)to {
41     // 切换子控制器
42     self.selectedIndex = to;
43 }
44 
45 @end

 1 //
 2 //  HVWTabBar.h
 3 //  HelloLottery
 4 //
 5 //  Created by hellovoidworld on 14/12/31.
 6 //  Copyright (c) 2014年 hellovoidworld. All rights reserved.
 7 //
 8 
 9 #import <UIKit/UIKit.h>
10 
11 @class HVWTabBar;
12 
13 /** 代理协议 */
14 @protocol HVWTabBarDelegate <NSObject>
15 @optional
16 - (void) hvwTabBar:(HVWTabBar *) hvwTabBar didClickedButtonFrom:(int) from to:(int) to;
17 @end
18 
19 @interface HVWTabBar : UIView
20 
21 /** 代理 */
22 @property(nonatomic, weak) id<HVWTabBarDelegate> delegate;
23 
24 @end

 1 //
 2 //  HVWTabBar.m
 3 //  HelloLottery
 4 //
 5 //  Created by hellovoidworld on 14/12/31.
 6 //  Copyright (c) 2014年 hellovoidworld. All rights reserved.
 7 //
 8 
 9 #import "HVWTabBar.h"
10 #import "HVWTabBarButton.h"
11 
12 #define HVWTabBarButtonCount 5
13 
14 @interface HVWTabBar()
15 
16 @property(nonatomic, weak) HVWTabBarButton *selectedButton;
17 
18 @end
19 
20 @implementation HVWTabBar
21 
22 // 重写initWithFrame方法，添加tabBar按钮
23 - (instancetype)initWithFrame:(CGRect)frame {
24     if (self = [super initWithFrame:frame]) {
25         [self initButtons];
26     }
27    
28     return self;
29 }
30 
31 /** 初始化按钮 */
32 - (void) initButtons {
33     for (int i=0; i<HVWTabBarButtonCount; i++) {
34         // 3.1创建按钮
35         HVWTabBarButton *button = [HVWTabBarButton buttonWithType:UIButtonTypeCustom];
36         button.tag = i;
37        
38         // 3.2设置按钮背景图片
39         [button setBackgroundImage:[UIImage imageNamed:[NSString stringWithFormat:@"TabBar%d", i+1]] forState:UIControlStateNormal];
40        
41         [button setBackgroundImage:[UIImage imageNamed:[NSString stringWithFormat:@"TabBar%dSel", i+1]]  forState:UIControlStateSelected];
42        
43         // 3.3添加到tabBar
44         [self addSubview:button];
45        
46         // 3.4添加监听事件
47         [button addTarget:self action:@selector(tabBarButtonClicked:) forControlEvents:UIControlEventTouchUpInside];
48        
49         // 3.5默认已经点击了第一个按钮
50         if (i == 0) {
51             [self tabBarButtonClicked:button];
52         }
53     }
54 }
55 
56 /** 初始化子控件的位置尺寸 */
57 - (void)layoutSubviews {
58     [super layoutSubviews];
59    
60     for (int i=0; i<HVWTabBarButtonCount; i++) {
61         HVWTabBarButton *button = self.subviews[i];
62         CGFloat buttonWidth = self.frame.size.width / 5;
63         CGFloat buttonHeight = self.frame.size.height;
64         CGFloat buttonX = i * buttonWidth;
65         CGFloat buttonY = 0;
66         button.frame = CGRectMake(buttonX, buttonY, buttonWidth, buttonHeight);
67     }
68 }
69 
70 - (void) tabBarButtonClicked:(HVWTabBarButton *) button {
71     // 1.调用代理方法，通知TabBarController切换子控制器
72     if ([self.delegate respondsToSelector:@selector(hvwTabBar:didClickedButtonFrom:to:)]) {
73         [self.delegate hvwTabBar:self didClickedButtonFrom:self.selectedButton.tag to:button.tag];
74     }
75    
76     // 2.取消选中之前的按钮
77     self.selectedButton.selected = NO;
78    
79     // 3.选中新点击的按钮
80     button.selected = YES;
81    
82     // 4.设置为当前选中的按钮
83     self.selectedButton = button;
84 }
85 
86 @end

4.头部Navigation导航栏主题设置

（1）让applicatoin管理状态栏

（2）Navigation导航栏背景图片

（3）统一设置所有Navigation导航栏

[UINavigationBar appearance]; // 所有Navigation导航栏（头部导航栏）

（4）设置所有Navigation导航栏字体颜色

（5）根据系统版本，设置Navigation导航栏背景图片

（6）在二级页面隐藏底部导航条，重写导航控制器的push方法

a.自定义一个导航控制器HVWNavigationController类，重写push，隐藏底部导航栏

b.设置为每个NavigationController的class

c.导航控制器类的initialize只会在类第一次使用的时候调用一次

所以，导航栏的主题设置可以放在initialize方法中

解决：

（1）使用application管理状态栏

设置不使用控制器控制状态栏

在AppDelegate中设置：

1 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
2     // Override point for customization after application launch.
3    
4     // 设置状态栏样式为白色
5     application.statusBarStyle = UIStatusBarStyleLightContent;
6    
7     return YES;
8 }

（2）创建自定义NavigationController类，并设置5个Navigation控制器的class为此类

（3）不要删除原来的tabBar，而是覆盖它，才能控制push事件中底部导航栏

HVWTabBarController:

 1 - (void)viewDidLoad {
 2     [super viewDidLoad];
 3     // Do any additional setup after loading the view.
 4    
 5     // 1.添加自定义TabBar
 6     HVWTabBar *hvwTabBar = [[HVWTabBar alloc] init];
 7     hvwTabBar.frame = self.tabBar.bounds;
 8     hvwTabBar.delegate = self;
 9    
10     // 2.设置tabBar
11     [self.tabBar addSubview:hvwTabBar];
12 }

（4）在NavigationController中编写类初始化方法和重写push方法

 1 //
 2 //  HVWNavigationController.m
 3 //  HelloLottery
 4 //
 5 //  Created by hellovoidworld on 15/1/1.
 6 //  Copyright (c) 2015年 hellovoidworld. All rights reserved.
 7 //
 8 
 9 #import "HVWNavigationController.h"
10 
11 
12 @interface HVWNavigationController ()
13 
14 @end
15 
16 @implementation HVWNavigationController
17 
18 - (void)viewDidLoad {
19     [super viewDidLoad];
20     // Do any additional setup after loading the view.
21    
22 }
23 
24 - (void)didReceiveMemoryWarning {
25     [super didReceiveMemoryWarning];
26     // Dispose of any resources that can be recreated.
27 }
28 
29 /** 类初始化方法，仅调用一次 */
30 + (void) initialize {
31     // 获取能够控制所有NavigationBar的实例
32     UINavigationBar *navBar = [UINavigationBar appearance];
33    
34     // 设置背景图片
35     NSString *bgImageName;
36     if (iOS7) { // 在HelloLottery-Prefix.pch中定义了判断iOS版本的全局变量
37         bgImageName = @"NavBar64";
38     } else {
39         bgImageName = @"NavBar";
40     }
41    
42     [navBar setBackgroundImage:[UIImage imageNamed:bgImageName] forBarMetrics:UIBarMetricsDefault];
43    
44     // 设置文本
45     NSMutableDictionary *attr = [NSMutableDictionary dictionary];
46     attr[NSForegroundColorAttributeName] = [UIColor whiteColor];
47     attr[NSFontAttributeName] = [UIFont systemFontOfSize:16];
48     [navBar setTitleTextAttributes:attr];
49 }
50 
51 // 拦截所有的push操作
52 - (void)pushViewController:(UIViewController *)viewController animated:(BOOL)animated {
53     viewController.hidesBottomBarWhenPushed = YES; // 这是原来NavigationController中的tabBar，所以要设置自定义的tabBar为Navigation中的tabBar
54     [super pushViewController:viewController animated:YES];
55 }
56 
57 @end
58