代码改变世界

iOS 新浪微博-1.0框架搭建

2015-08-02 19:59  jiangys  阅读(1740)  评论(0编辑  收藏  举报

项目搭建

1.新建一个微博的项目,去掉屏幕旋转

2.设置屏幕方向-->只有竖向

3.使用代码构建UI,不使用storyboard

4.配置图标AppIcon和LaunchImage

将微博资料的相关素材拉到AppIcon和LaunchImage中,并将除了AppIcon和LaunchImage其它图片也全部拉到images.xcassets中。

项目布局

1、项目分层。为了让在Finder中显示跟Xcode中显示都是分层效果,首先在Finder中建文件目录,再拉到xcode中。

2.添加导航及控制器

思路:

(1)创建一个集成UITabBarController的类作为window的rootViewController

(2)由于中间有一个特殊的+加按钮,需要重写(KVC)导航控制器类来重新布局

AppDelegate.m

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    
    //1.创建窗口
    self.window=[[UIWindow alloc] init];
    self.window.frame=[UIScreen mainScreen].bounds;
    
    //2.设置根控制器
    self.window.rootViewController=[[UYTabBarViewController alloc] init];
    
    //显示窗口
    [self.window makeKeyAndVisible];
    return YES;
}

Weibo-Prefix.pch :为了下面方便测试,我们在全局宏命令中定义随机色及RGB颜色

// RGB颜色
#define HWColor(r, g, b) [UIColor colorWithRed:(r)/255.0 green:(g)/255.0 blue:(b)/255.0 alpha:1.0]

// 随机色
#define HWRandomColor HWColor(arc4random_uniform(256), arc4random_uniform(256), arc4random_uniform(256))

UYTabBarViewController:

#import "UYTabBarViewController.h"
#import "UYHomeViewController.h"
#import "UYMessageCenterViewController.h"
#import "UYProfileViewController.h"
#import "UYDiscoverViewController.h"
#import "UYTabBar.h"


@interface UYTabBarViewController ()

@end

@implementation UYTabBarViewController

- (void)viewDidLoad
{
    [super viewDidLoad];
    
    // 1.初始化子控制器
    UYHomeViewController *home = [[UYHomeViewController alloc] init];
    [self addChildVc:home title:@"首页" image:@"tabbar_home" selectedImage:@"tabbar_home_selected"];
    
    UYMessageCenterViewController *messageCenter = [[UYMessageCenterViewController alloc] init];
    [self addChildVc:messageCenter title:@"消息" image:@"tabbar_message_center" selectedImage:@"tabbar_message_center_selected"];
    
    UYDiscoverViewController *discover = [[UYDiscoverViewController alloc] init];
    [self addChildVc:discover title:@"发现" image:@"tabbar_discover" selectedImage:@"tabbar_discover_selected"];
    
    UYProfileViewController *profile = [[UYProfileViewController alloc] init];
    [self addChildVc:profile title:@"" image:@"tabbar_profile" selectedImage:@"tabbar_profile_selected"];
    
    // 2.更换系统自带的tabbar,由于tabbar是realonly,因此使用KVC来重写。如果没有特殊的导航布局,去掉这下面这部分代码即可。
//    UYTabBar *tabBar = [[UYTabBar alloc] init];
//    tabBar.delegate = self;
//    [self setValue:tabBar forKeyPath:@"tabBar"];
}

/**
 *  添加一个子控制器
 *
 *  @param childVc       子控制器
 *  @param title         标题
 *  @param image         图片
 *  @param selectedImage 选中的图片
 */
- (void)addChildVc:(UIViewController *)childVc title:(NSString *)title image:(NSString *)image selectedImage:(NSString *)selectedImage
{
    // 设置子控制器的文字
    childVc.title = title; // 同时设置tabbar和navigationBar的文字
    
    // 设置子控制器的图片
    childVc.tabBarItem.image = [UIImage imageNamed:image];
    childVc.tabBarItem.selectedImage = [[UIImage imageNamed:selectedImage]imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
    
    // 设置文字的样式
    NSMutableDictionary *textAttrs = [NSMutableDictionary dictionary];
    textAttrs[NSForegroundColorAttributeName] = HWColor(123, 123, 123);
    NSMutableDictionary *selectTextAttrs = [NSMutableDictionary dictionary];
    selectTextAttrs[NSForegroundColorAttributeName] = [UIColor orangeColor];
    [childVc.tabBarItem setTitleTextAttributes:textAttrs forState:UIControlStateNormal];
    [childVc.tabBarItem setTitleTextAttributes:selectTextAttrs forState:UIControlStateSelected];
    
    // 先给外面传进来的小控制器 包装 一个导航控制器
    //HWNavigationController *nav = [[HWNavigationController alloc] initWithRootViewController:childVc];
    // 添加为子控制器
    [self addChildViewController:childVc];
}

@end

运行后,效果如下:

从上面的效果可以看到,我们还需要设置顶部导航控制器:

思路:

  1. 每个tab的controller上包装了一个UINavigationController.
  2. 进入非NavigationController的rootViewController的时候,隐藏底部的TabBar
  3. 重写pushViewController方法,当push的时候隐藏TabBar #mark:此方法可以作用与所有的非rootViewController,非常好用

1.创建一个集成UIBarButtonItem的分类,用来创建使用UIButton作为按钮图标的item

#import "UIBarButtonItem+Extension.h"

@implementation UIBarButtonItem (Extension)

+ (instancetype) itemWithImage:(NSString *) imageName hightlightedImage:(NSString *) highlightedImageName target:(id)target selector:(SEL)selector {
     UIBarButtonItem *item = [[self alloc] init];
   
    // 创建按钮
    UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
    UIImage *image = [UIImage imageNamed:imageName];
    [button setImage:image forState:UIControlStateNormal];
    [button setImage:[UIImage imageNamed:highlightedImageName] forState:UIControlStateHighlighted];
   
    // 一定要设置frame,才能显示
    button.frame = CGRectMake(0, 0, image.size.width, image.size.height);
   
    // 设置事件
    [button addTarget:target action:selector forControlEvents:UIControlEventTouchUpInside];
   
    item.customView = button;
    return item;
}

@end
2.UINavigationController:
#import "UYNavigationController.h"

@interface UYNavigationController ()

@end

@implementation UYNavigationController

+ (void)initialize
{
    // 设置整个项目所有item的主题样式
    UIBarButtonItem *item = [UIBarButtonItem appearance];
    
    // 设置普通状态
    // key:NS****AttributeName
    NSMutableDictionary *textAttrs = [NSMutableDictionary dictionary];
    textAttrs[NSForegroundColorAttributeName] = [UIColor orangeColor];
    textAttrs[NSFontAttributeName] = [UIFont systemFontOfSize:13];
    [item setTitleTextAttributes:textAttrs forState:UIControlStateNormal];
    
    // 设置不可用状态
    NSMutableDictionary *disableTextAttrs = [NSMutableDictionary dictionary];
    disableTextAttrs[NSForegroundColorAttributeName] = [UIColor colorWithRed:0.6 green:0.6 blue:0.6 alpha:0.7];
    disableTextAttrs[NSFontAttributeName] = [UIFont systemFontOfSize:13];
    [item setTitleTextAttributes:disableTextAttrs forState:UIControlStateDisabled];
}

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

/**
 *  重写这个方法目的:能够拦截所有push进来的控制器
 *
 *  @param viewController 即将push进来的控制器
 */
- (void)pushViewController:(UIViewController *)viewController animated:(BOOL)animated
{
    if (self.viewControllers.count > 0) { // 这时push进来的控制器viewController,不是第一个子控制器(不是根控制器)
        /* 自动显示和隐藏tabbar */
        viewController.hidesBottomBarWhenPushed = YES;
    //左边    
    self.navigationItem.leftBarButtonItem = [HVWBarButtonItem itemWithImage:@"navigationbar_friendsearch" hightlightedImage:@"navigationbar_friendsearch_highlighted" target:self selector:@selector(searchFriend)];     // 右边按钮
    self.navigationItem.rightBarButtonItem = [HVWBarButtonItem itemWithImage:@"navigationbar_pop" hightlightedImage:@"navigationbar_pop_highlighted" target:self selector:@selector(pop)];
}
[super pushViewController:viewController animated:animated]; } 

- (void)back {
#warning 这里要用self,不是self.navigationController
// 因为self本来就是一个导航控制器,self.navigationController这里是nil的
[self popViewControllerAnimated:YES];
}

- (void)more {
[self popToRootViewControllerAnimated:YES];
}

@end

效果如下:

自定义TabBar,把特殊+按钮添加上来

需要反注释掉UYTabBarViewController部分代码:

    // 2.更换系统自带的tabbar,由于tabbar是realonly,因此使用KVC来重写。如果没有特殊的导航布局,去掉这下面这部分代码即可。
    UYTabBar *tabBar = [[UYTabBar alloc] init];
    tabBar.delegate = self;
    [self setValue:tabBar forKeyPath:@"tabBar"];

UYTabBar 中,在layoutSubviews重新对四个底部TabBar进行位置调整,并给+号按钮增加点击事件:

UYTabBar.h

#import <UIKit/UIKit.h>
@class UYTabBar;

#warning 因为UYTabBar继承自UITabBar,所以称为UYTabBar的代理,也必须实现UITabBar的代理协议
@protocol UYTabBarDelegate <UITabBarDelegate>
@optional
- (void)tabBarDidClickPlusButton:(UYTabBar *)tabBar;
@end

@interface UYTabBar : UITabBar
@property (nonatomic, weak) id<UYTabBarDelegate> delegate;
@end

UYTabBar.m

#import "UYTabBar.h"

@interface UYTabBar()
@property(nonatomic,weak) UIButton *plusBtn;
@end

@implementation UYTabBar

- (id)initWithFrame:(CGRect)frame
{
    self = [super initWithFrame:frame];
    if (self) {
        // 添加一个+号按钮 到tabbar中
        UIButton *plusBtn = [[UIButton alloc] init];
        //设置背影
        [plusBtn setBackgroundImage:[UIImage imageNamed:@"tabbar_compose_button"] forState:UIControlStateNormal];
        [plusBtn setBackgroundImage:[UIImage imageNamed:@"tabbar_compose_button_highlighted"] forState:UIControlStateHighlighted];
        //增加+号图片
        [plusBtn setImage:[UIImage imageNamed:@"tabbar_compose_icon_add"] forState:UIControlStateNormal];
        [plusBtn setImage:[UIImage imageNamed:@"tabbar_compose_icon_add_highlighted"] forState:UIControlStateHighlighted];
        plusBtn.size = plusBtn.currentBackgroundImage.size;
        [plusBtn addTarget:self action:@selector(plusClick) forControlEvents:UIControlEventTouchUpInside];
        [self addSubview:plusBtn];
        self.plusBtn = plusBtn;
    }
    return self;
}


/**
 *  加号按钮点击
 */
- (void)plusClick
{
    // 通知代理
    if ([self.delegate respondsToSelector:@selector(tabBarDidClickPlusButton:)]) {
        [self.delegate tabBarDidClickPlusButton:self];
    }
}


- (void)layoutSubviews
{
#warning [super layoutSubviews] 一定要调用
    [super layoutSubviews];
    
    // 1.设置加号按钮的位置
    self.plusBtn.centerX = self.width * 0.5;
    self.plusBtn.centerY = self.height * 0.5;
    
    // 2.设置其他tabbarButton的位置和尺寸
    CGFloat tabbarButtonW = self.width / 5;
    CGFloat tabbarButtonIndex = 0;
    for (UIView *child in self.subviews) {
        Class class = NSClassFromString(@"UITabBarButton");
        if ([child isKindOfClass:class]) {
            // 设置宽度
            child.width = tabbarButtonW;
            // 设置x
            child.x = tabbarButtonIndex * tabbarButtonW;
            
            // 增加索引
            tabbarButtonIndex++;
            if (tabbarButtonIndex == 2) {
                tabbarButtonIndex++;
            }
        }
    }
}

@end

效果如下:

添加导航栏按钮

需要给各个Tab还有其下的页面添加左右导航栏按钮
由于该方法经常被使用到,自定义一个分类UIBarButtonItem
UIBarButtonItem.h
@interface UIBarButtonItem (Extension)
+ (UIBarButtonItem *)itemWithTarget:(id)target action:(SEL)action image:(NSString *)image highImage:(NSString *)highImage;
@end

UIBarButtonItem.m

@implementation UIBarButtonItem (Extension)
/**
 *  创建一个item
 *  
 *  @param target    点击item后调用哪个对象的方法
 *  @param action    点击item后调用target的哪个方法
 *  @param image     图片
 *  @param highImage 高亮的图片
 *
 *  @return 创建完的item
 */
+ (UIBarButtonItem *)itemWithTarget:(id)target action:(SEL)action image:(NSString *)image highImage:(NSString *)highImage
{
    UIButton *btn = [UIButton buttonWithType:UIButtonTypeCustom];
    [btn addTarget:target action:action forControlEvents:UIControlEventTouchUpInside];
    // 设置图片
    [btn setBackgroundImage:[UIImage imageNamed:image] forState:UIControlStateNormal];
    [btn setBackgroundImage:[UIImage imageNamed:highImage] forState:UIControlStateHighlighted];
    // 设置尺寸
    btn.size = btn.currentBackgroundImage.size;
    return [[UIBarButtonItem alloc] initWithCustomView:btn];
}
@end

在HWNavigationController.m方法pushViewController下,增加

/**
 *  重写这个方法目的:能够拦截所有push进来的控制器
 *
 *  @param viewController 即将push进来的控制器
 */
- (void)pushViewController:(UIViewController *)viewController animated:(BOOL)animated
{
    if (self.viewControllers.count > 0) { // 这时push进来的控制器viewController,不是第一个子控制器(不是根控制器)
        /* 自动显示和隐藏tabbar */
        viewController.hidesBottomBarWhenPushed = YES;
        
        /* 设置导航栏上面的内容 */
        // 设置左边的返回按钮
        viewController.navigationItem.leftBarButtonItem = [UIBarButtonItem itemWithTarget:self action:@selector(back) image:@"navigationbar_back" highImage:@"navigationbar_back_highlighted"];
        
        // 设置右边的更多按钮
        viewController.navigationItem.rightBarButtonItem = [UIBarButtonItem itemWithTarget:self action:@selector(more) image:@"navigationbar_more" highImage:@"navigationbar_more_highlighted"];
    }

    [super pushViewController:viewController animated:animated];
}

新建一个测试页UYTest1ViewController

首页UYHomeViewController.m

- (void)viewDidLoad
{
    [super viewDidLoad];
    
    /* 设置导航栏上面的内容 */
    self.navigationItem.leftBarButtonItem = [UIBarButtonItem itemWithTarget:self action:@selector(friendSearch) image:@"navigationbar_friendsearch" highImage:@"navigationbar_friendsearch_highlighted"];
    
    self.navigationItem.rightBarButtonItem = [UIBarButtonItem itemWithTarget:self action:@selector(pop) image:@"navigationbar_pop" highImage:@"navigationbar_pop_highlighted"];
}

- (void)friendSearch
{
    NSLog(@"friendSearch");
}

- (void)pop
{
    //NSLog(@"pop");
    UYTest1ViewController *test1 = [[UYTest1ViewController alloc] init];
    test1.title = @"测试1控制器";
    [self.navigationController pushViewController:test1 animated:YES];
    
}

效果:

添加自定义日志输出

日志输出,如果直接使用NSLog,在发布程序后,会比较耗性能。因此,我们只在调试的时候,才需要日志输出。

在pch文件里添加debug模式下的log函数

// 测试用log
#ifdef DEBUG
    #define UYLog(...) NSLog(__VA_ARGS__)
#else
    #define UYLog(...)
#endif

使用宏定义的log函数,只有在debug模式下才会转化成为NSLog,release的时候会转为空

 /** 寻找朋友按钮事件 */
 - (void) searchFriend {
     UYLog(@"searchFriend");
 }

这里可以修改运行模式:

发布的程序,是Archive模式,是Release。

源代码下载:点击下载