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iOS框架搭建(MVC,自定义TabBar)--微博搭建为例

2017-02-20 11:06 477 查看

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:@"我" 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:

每个tab的controller上包装了一个UINavigationController.

进入非NavigationController的rootViewController的时候,隐藏底部的TabBar

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
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