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
时间： 2024-07-30 13:32:44