[iOS UI进阶 - 2.0] 彩票Demo v1.0

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

 

code source:https://github.com/hellovoidworld/HelloLottery

 

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:

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

 

初步实现都在HVWTabBarController的viewDidLoad方法中:

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
   
    // 1.删除原来的TabBar
    [self.tabBar removeFromSuperview];
   
    // 2.添加自定义TabBar
    HVWTabBar *hvwTabBar = [[HVWTabBar alloc] init];
    hvwTabBar.frame = self.tabBar.frame;
    hvwTabBar.backgroundColor = [UIColor greenColor]; // 设置绿色底的tabBar，稍后会被按钮图片覆盖
    [self.view addSubview:hvwTabBar];
   
    // 3.添加按钮
    for (int i=0; i<5; i++) {
        // 3.1创建按钮
        HVWTabBarButton *button = [HVWTabBarButton buttonWithType:UIButtonTypeCustom];
        button.tag = i;

        // 3.2设置按钮背景图片
        [button setBackgroundImage:[UIImage imageNamed:[NSString stringWithFormat:@"TabBar%d", i+1]] forState:UIControlStateNormal];
       
        [button setBackgroundImage:[UIImage imageNamed:[NSString stringWithFormat:@"TabBar%dSel", i+1]]  forState:UIControlStateSelected];
       
        // 3.3设置frame
        CGFloat buttonWidth = hvwTabBar.frame.size.width / 5;
        CGFloat buttonHeight = hvwTabBar.frame.size.height;
        CGFloat buttonX = i * buttonWidth;
        CGFloat buttonY = 0;
        button.frame = CGRectMake(buttonX, buttonY, buttonWidth, buttonHeight);
       
        // 3.4添加到tabBar
        [hvwTabBar addSubview:button];
       
        // 3.5添加监听事件
        [button addTarget:self action:@selector(tabBarButtonClicked:) forControlEvents:UIControlEventTouchUpInside];
       
        // 3.6默认已经点击了第一个按钮
        if (i == 0) {
            [self tabBarButtonClicked:button];
        }
    }
}

- (void) tabBarButtonClicked:(HVWTabBarButton *) button {
    // 1.取消选中之前的按钮
    self.selectedButton.selected = NO;
   
    // 2.选中新点击的按钮
    button.selected = YES;
   
    // 3.设置为当前选中的按钮
    self.selectedButton = button;
   
    // 4.切换子控制器
    self.selectedIndex = button.tag;
}

 

 

 

 

（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

//
//  HWTabBarController.m
//  HelloLottery
//
//  Created by hellovoidworld on 14/12/31.
//  Copyright (c) 2014年 hellovoidworld. All rights reserved.
//

#import "HvWTabBarController.h"
#import "HVWTabBar.h"
#import "HVWTabBarButton.h"

@interface HVWTabBarController () <HVWTabBarDelegate>

@end

@implementation HVWTabBarController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
   
    // 1.删除原来的TabBar
    [self.tabBar removeFromSuperview];
   
    // 2.添加自定义TabBar
    HVWTabBar *hvwTabBar = [[HVWTabBar alloc] init];
    hvwTabBar.frame = self.tabBar.frame;
    hvwTabBar.backgroundColor = [UIColor greenColor]; // 设置绿色底的tabBar，稍后会被按钮图片覆盖
    hvwTabBar.delegate = self;
    [self.view addSubview:hvwTabBar];
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

#pragma mark - HVWTabBarDelegate 代理方法
- (void)hvwTabBar:(HVWTabBar *)hvwTabBar didClickedButtonFrom:(int)from to:(int)to {
    // 切换子控制器
    self.selectedIndex = to;
}

@end

 

//
//  HVWTabBar.h
//  HelloLottery
//
//  Created by hellovoidworld on 14/12/31.
//  Copyright (c) 2014年 hellovoidworld. All rights reserved.
//

#import <UIKit/UIKit.h>

@class HVWTabBar;

/** 代理协议 */
@protocol HVWTabBarDelegate <NSObject>
@optional
- (void) hvwTabBar:(HVWTabBar *) hvwTabBar didClickedButtonFrom:(int) from to:(int) to;
@end

@interface HVWTabBar : UIView

/** 代理 */
@property(nonatomic, weak) id<HVWTabBarDelegate> delegate;

@end

 

//
//  HVWTabBar.m
//  HelloLottery
//
//  Created by hellovoidworld on 14/12/31.
//  Copyright (c) 2014年 hellovoidworld. All rights reserved.
//

#import "HVWTabBar.h"
#import "HVWTabBarButton.h"

#define HVWTabBarButtonCount 5

@interface HVWTabBar()

@property(nonatomic, weak) HVWTabBarButton *selectedButton;

@end

@implementation HVWTabBar

// 重写initWithFrame方法，添加tabBar按钮
- (instancetype)initWithFrame:(CGRect)frame {
    if (self = [super initWithFrame:frame]) {
        [self initButtons];
    }
   
    return self;
}

/** 初始化按钮 */
- (void) initButtons {
    for (int i=0; i<HVWTabBarButtonCount; i++) {
        // 3.1创建按钮
        HVWTabBarButton *button = [HVWTabBarButton buttonWithType:UIButtonTypeCustom];
        button.tag = i;
       
        // 3.2设置按钮背景图片
        [button setBackgroundImage:[UIImage imageNamed:[NSString stringWithFormat:@"TabBar%d", i+1]] forState:UIControlStateNormal];
       
        [button setBackgroundImage:[UIImage imageNamed:[NSString stringWithFormat:@"TabBar%dSel", i+1]]  forState:UIControlStateSelected];
       
        // 3.3添加到tabBar
        [self addSubview:button];
       
        // 3.4添加监听事件
        [button addTarget:self action:@selector(tabBarButtonClicked:) forControlEvents:UIControlEventTouchUpInside];
       
        // 3.5默认已经点击了第一个按钮
        if (i == 0) {
            [self tabBarButtonClicked:button];
        }
    }
}

/** 初始化子控件的位置尺寸 */
- (void)layoutSubviews {
    [super layoutSubviews];
   
    for (int i=0; i<HVWTabBarButtonCount; i++) {
        HVWTabBarButton *button = self.subviews[i];
        CGFloat buttonWidth = self.frame.size.width / 5;
        CGFloat buttonHeight = self.frame.size.height;
        CGFloat buttonX = i * buttonWidth;
        CGFloat buttonY = 0;
        button.frame = CGRectMake(buttonX, buttonY, buttonWidth, buttonHeight);
    }
}

- (void) tabBarButtonClicked:(HVWTabBarButton *) button {
    // 1.调用代理方法，通知TabBarController切换子控制器
    if ([self.delegate respondsToSelector:@selector(hvwTabBar:didClickedButtonFrom:to:)]) {
        [self.delegate hvwTabBar:self didClickedButtonFrom:self.selectedButton.tag to:button.tag];
    }
   
    // 2.取消选中之前的按钮
    self.selectedButton.selected = NO;
   
    // 3.选中新点击的按钮
    button.selected = YES;
   
    // 4.设置为当前选中的按钮
    self.selectedButton = button;
}

@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：

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

 

（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:

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

 

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

//
//  HVWNavigationController.m
//  HelloLottery
//
//  Created by hellovoidworld on 15/1/1.
//  Copyright (c) 2015年 hellovoidworld. All rights reserved.
//

#import "HVWNavigationController.h"


@interface HVWNavigationController ()

@end

@implementation HVWNavigationController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
   
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

/** 类初始化方法，仅调用一次 */
+ (void) initialize {
    // 获取能够控制所有NavigationBar的实例
    UINavigationBar *navBar = [UINavigationBar appearance];
   
    // 设置背景图片
    NSString *bgImageName;
    if (iOS7) { // 在HelloLottery-Prefix.pch中定义了判断iOS版本的全局变量
        bgImageName = @"NavBar64";
    } else {
        bgImageName = @"NavBar";
    }
   
    [navBar setBackgroundImage:[UIImage imageNamed:bgImageName] forBarMetrics:UIBarMetricsDefault];
   
    // 设置文本
    NSMutableDictionary *attr = [NSMutableDictionary dictionary];
    attr[NSForegroundColorAttributeName] = [UIColor whiteColor];
    attr[NSFontAttributeName] = [UIFont systemFontOfSize:16];
    [navBar setTitleTextAttributes:attr];
}

// 拦截所有的push操作
- (void)pushViewController:(UIViewController *)viewController animated:(BOOL)animated {
    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
    [super pushViewController:viewController animated:YES];
}

@end