第六篇、抽屉效果+UITabBarController(主流框架)

依赖于第三方的框架RESideMenu

1.AppDelegate.m中的实现

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    // Override point for customization after application launch.
    
    //在AppDelegate.h中声明属性，初始化tabBarController
    self.tabBar = [[UITabBarController alloc] init];
    
    ViewController* vc1 = [[ViewController alloc] init];
    vc1.tabBarItem = [[UITabBarItem alloc] initWithTabBarSystemItem:UITabBarSystemItemBookmarks tag:0];
    UINavigationController* nav1 = [[UINavigationController alloc] initWithRootViewController:vc1];
    
    ViewController1* vc2 = [[ViewController1 alloc] init];
    vc2.tabBarItem = [[UITabBarItem alloc] initWithTabBarSystemItem:UITabBarSystemItemContacts tag:1];
    UINavigationController* nav2 = [[UINavigationController alloc] initWithRootViewController:vc2];
    
    self.tabBar.viewControllers = @[nav1,nav2];
    
    
    //初始化leftVC
    LeftController* left = [[LeftController alloc] init];
   
    //初始化RESideMenu
    RESideMenu* menu = [[RESideMenu alloc] initWithContentViewController:self.tabBar leftMenuViewController:left rightMenuViewController:nil];
    self.window.rootViewController= menu;
    return YES;
}

2.left左侧菜单

-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
    AppDelegate* GHDelegate = (AppDelegate* )[UIApplication sharedApplication].delegate;
    ViewController1_1* vc = [[ViewController1_1 alloc] init];
    
    //通过GHDelegate.tabBar.selectedIndex获得当前tabbaritem对应的nav,进行页面跳转
    NSArray *arrControllers = GHDelegate.tabBar.viewControllers;
    
    if (GHDelegate.tabBar.selectedIndex==0) {
        UINavigationController* nav = (UINavigationController* )[arrControllers objectAtIndex:0];
        //隐藏sideMenuViewController
        [self.sideMenuViewController hideMenuViewController];
        //隐藏底部
        vc.hidesBottomBarWhenPushed = YES;
        [nav pushViewController:vc animated:YES];
    }else{
        UINavigationController* nav = (UINavigationController* )[arrControllers objectAtIndex:1];
        [self.sideMenuViewController hideMenuViewController];
        vc.hidesBottomBarWhenPushed = YES;
        [nav pushViewController:vc animated:YES];
    }
    
}

3.RESideMenu常见的属性设置

- (void)awakeFromNib
{
    self.parallaxEnabled = NO;  //视图差效果
    self.scaleContentView = YES;  //中心视图缩放功能打开
    self.contentViewScaleValue = 0.95;  //侧滑出现时缩放比
    self.scaleMenuView = NO;        //侧滑出来的视图是否支持缩放
    self.contentViewShadowEnabled = YES; //中心视图阴影效果，打开显得有层次感。
    self.contentViewShadowRadius = 4.5;  //中心视图阴影效果Radius
    self.panGestureEnabled = NO;   //关闭拖动支持手势


//使用storyboard初始化中心视图和左视图。
    self.contentViewController = [self.storyboard instantiateViewControllerWithIdentifier:@"contentViewController"];  //tabbar controller 

    self.leftMenuViewController = [self.storyboard instantiateViewControllerWithIdentifier:@"leftMenuViewController"];
}

附件： 

4.设置基本导航控制器

#import "LHLNavigationViewController.h"

@interface LHLNavigationViewController () <UIGestureRecognizerDelegate>

@end

@implementation LHLNavigationViewController

+ (void)load
{
    UINavigationBar *navBar = [UINavigationBar appearanceWhenContainedIn:self, nil];
    // 设置导航条字体
    NSMutableDictionary *attr = [NSMutableDictionary dictionary];
    attr[NSFontAttributeName] = [UIFont systemFontOfSize:20];
    [navBar setTitleTextAttributes:attr];
    
    // 设置背景图片
    [navBar setBackgroundImage:[UIImage imageNamed:@"navigationbarBackgroundWhite"] forBarMetrics:UIBarMetricsDefault];
}

- (void)pushViewController:(UIViewController *)viewController animated:(BOOL)animated{
    
    if (self.childViewControllers.count > 0) { // 非根控制器
　　　　// 自定义UIBarButtonItem的分类方法
        UIBarButtonItem *item = [UIBarButtonItem backItemWitnImage:[UIImage imageNamed:@"navigationButtonReturn"] heighlightImage:[UIImage imageNamed:@"navigationButtonReturnClick"] target:self action:@selector(back) title:@"返回"];
        viewController.hidesBottomBarWhenPushed = YES;
        viewController.navigationItem.leftBarButtonItem = item;
    }
    
    [super pushViewController:viewController animated:animated];
    
}

- (void)back
{
    [self popViewControllerAnimated:YES];
}

- (void)viewDidLoad {
    [super viewDidLoad];

　　// 全屏返回手势
    UIPanGestureRecognizer *pan = [[UIPanGestureRecognizer alloc] initWithTarget:self.interactivePopGestureRecognizer.delegate action:@selector(handleNavigationTransition:)];
    pan.delegate = self;
    self.interactivePopGestureRecognizer.enabled = NO;
    [self.view addGestureRecognizer:pan];
    
}
/*
 <UIScreenEdgePanGestureRecognizer: 0x7f7f98c97430;
 state = Possible; delaysTouchesBegan = YES;
 view = <UILayoutContainerView 0x7f7f98f19d00>;
 target= <(action=handleNavigationTransition:,
 target=<_UINavigationInteractiveTransition 0x7f7f98c96ee0>)>
 */

#pragma mark - UIGestureRecognizerDelegate
- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch
{
    return self.childViewControllers.count > 1;
}

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


@end

5.设置UITabBarViewController

#import "LHLTabBarController.h"
#import "LHLEssenceViewController.h"
#import "LHLFriendTrendViewController.h"
#import "LHLMeViewController.h"
#import "LHLNewViewController.h"
#import "LHLPublishViewController.h"
#import "LHLTabBar.h"
#import "LHLNavigationViewController.h"

@interface LHLTabBarController ()

@end

@implementation LHLTabBarController

// load方法只会调用一次
+ (void)load
{
    // 设置某个类中的 UITabBarItem 按钮的颜色
    UITabBarItem *item = [UITabBarItem appearanceWhenContainedIn:self, nil];
    NSMutableDictionary *attrs = [NSMutableDictionary dictionary];
    attrs[NSForegroundColorAttributeName] = [UIColor blackColor];
    [item setTitleTextAttributes:attrs forState:UIControlStateSelected];
    
    // 设置字体的尺寸:只有正常状态下设置才有效果
    NSMutableDictionary *attrsNor = [NSMutableDictionary dictionary];
    attrsNor[NSFontAttributeName] = [UIFont systemFontOfSize:13];
    [item setTitleTextAttributes:attrsNor forState:UIControlStateNormal];
}


#pragma mark - 初始化
- (void)viewDidLoad {
    [super viewDidLoad];

    // 1.创建所有子控制器
    [self setUpAllChildControllers];
    
    // 2.2设置tabBar按钮的标题
    [self setUpAllTitles];
    
    // 3.使用自定义tabBar
    [self setUpTabBar];

}

#pragma mark - 自定义方法
- (void)setUpAllChildControllers
{
    // 2.1.设置tabBar的子控制器
    // 精华
    LHLEssenceViewController *essenceVC = [[LHLEssenceViewController alloc] init];
    LHLNavigationViewController *nav = [[LHLNavigationViewController alloc] initWithRootViewController:essenceVC];
    [self addChildViewController:nav];
    
    // 新帖
    LHLNewViewController *newVC = [[LHLNewViewController alloc] init];
    LHLNavigationViewController *nav1 = [[LHLNavigationViewController alloc] initWithRootViewController:newVC];
    [self addChildViewController:nav1];
    
    // 关注
    LHLFriendTrendViewController *trendVC = [[LHLFriendTrendViewController alloc] init];
    LHLNavigationViewController *nav3 = [[LHLNavigationViewController alloc] initWithRootViewController:trendVC];
    [self addChildViewController:nav3];
    
    // 我
    LHLMeViewController *meVC = [[LHLMeViewController alloc] init];
    LHLNavigationViewController *nav4 = [[LHLNavigationViewController alloc] initWithRootViewController:meVC];
    [self addChildViewController:nav4];
    
    

}

- (void)setUpAllTitles
{
    // 精华
    UINavigationController *nav = self.childViewControllers[0];
    [self setTitleButton:nav title:@"精华" image:@"tabBar_essence_icon" selectImage:@"tabBar_essence_click_icon"];
    
    // 新帖
    UINavigationController *nav1 = self.childViewControllers[1];
    [self setTitleButton:nav1 title:@"新帖" image:@"tabBar_new_icon" selectImage:@"tabBar_new_click_icon"];

    // 关注
    UINavigationController *nav3 = self.childViewControllers[2];
    [self setTitleButton:nav3 title:@"关注" image:@"tabBar_friendTrends_icon" selectImage:@"tabBar_friendTrends_click_icon"];
    
    // 我
    UINavigationController *nav4 = self.childViewControllers[3];
    [self setTitleButton:nav4 title:@"我" image:@"tabBar_me_icon" selectImage:@"tabBar_me_click_icon"];
}

- (void)setTitleButton:(UINavigationController *)nav title:(NSString *)aTitle image:(NSString *)aImage selectImage:(NSString *)aSelectImage
{
    nav.tabBarItem.title = aTitle;
    nav.tabBarItem.image = [UIImage imageRenderOriginalWithName:aImage];
    nav.tabBarItem.selectedImage = [UIImage imageRenderOriginalWithName:aSelectImage];
}

- (void)setUpTabBar
{
    LHLTabBar *tabBar = [[LHLTabBar alloc] init];
    // 利用KVC对系统的tabBar进行赋值: KVC的原理是通过访问属性进行赋值,不是通过setter方法进行赋值
    [self setValue:tabBar forKeyPath:@"tabBar"];
}

@end

6.分类文件

UIBarButtonItem

#import "UIBarButtonItem+item.h"

@implementation UIBarButtonItem (item)
+ (UIBarButtonItem *)itemWitnImage:(UIImage *)aImage heighlightImage:(UIImage *)aSelectImage target:(id)aTarget action:(SEL)aAction
{
    UIButton *btn = [[UIButton alloc] init];
    [btn setImage:aImage forState:UIControlStateNormal];
    [btn setImage:aSelectImage forState:UIControlStateHighlighted];
    [btn sizeToFit];
    [btn addTarget:aTarget action:aAction forControlEvents:UIControlEventTouchUpInside];
    // 添加的代码
    UIView *itemView = [[UIView alloc] initWithFrame:btn.bounds];
    [itemView addSubview:btn];
    
    return [[UIBarButtonItem alloc] initWithCustomView:itemView];
}

+ (UIBarButtonItem *)itemWitnImage:(UIImage *)aImage selectedImage:(UIImage *)aSelectImage target:(id)aTarget action:(SEL)aAction
{
    UIButton *btn = [UIButton buttonWithType:UIButtonTypeCustom];
    [btn setImage:aImage forState:UIControlStateNormal];
    [btn setImage:aSelectImage forState:UIControlStateSelected];
    [btn sizeToFit];
    [btn addTarget:aTarget action:aAction forControlEvents:UIControlEventTouchUpInside];
    UIView *containerView = [[UIView alloc] initWithFrame:btn.bounds];
    [containerView addSubview:btn];
    return [[UIBarButtonItem alloc] initWithCustomView:containerView];
}

+ (UIBarButtonItem *)backItemWitnImage:(UIImage *)aImage heighlightImage:(UIImage *)aSelectImage target:(id)aTarget action:(SEL)aAction title:(NSString *)aTitle
{
    UIButton *btn = [[UIButton alloc] init];
    [btn setImage:aImage forState:UIControlStateNormal];
    [btn setImage:aSelectImage forState:UIControlStateHighlighted];
    [btn setTitle:aTitle forState:UIControlStateNormal];
    [btn setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
    [btn setTitleColor:[UIColor redColor] forState:UIControlStateHighlighted];
    btn.contentEdgeInsets = UIEdgeInsetsMake(0, -10, 0, 0);
    [btn sizeToFit];
    [btn addTarget:aTarget action:aAction forControlEvents:UIControlEventTouchUpInside];
    UIView *containerView = [[UIView alloc] initWithFrame:btn.bounds];
    [containerView addSubview:btn];
    return [[UIBarButtonItem alloc] initWithCustomView:containerView];
}



@end

UIImae

#import "UIImage+image.h"

@implementation UIImage (image)
// 在周边加一个边框为1的透明像素
- (UIImage *)imageAntialias
{
    CGFloat border = 1.0f;
    CGRect rect = CGRectMake(border, border, self.size.width-2*border, self.size.height-2*border);
    
    UIImage *img = nil;
    
    UIGraphicsBeginImageContext(CGSizeMake(rect.size.width,rect.size.height));
    [self drawInRect:CGRectMake(-1, -1, self.size.width, self.size.height)];
    img = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    
    UIGraphicsBeginImageContext(self.size);
    [img drawInRect:rect];
    UIImage* antiImage = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    
    return antiImage;
}
// 返回一张没有被渲染的图片
+ (UIImage *)imageRenderOriginalWithName:(NSString *)imageName
{
    UIImage *image = [UIImage imageNamed:imageName];
    image = [image imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
    return image;
}

@end

7.UITabBar

#import "LHLTabBar.h"

@interface LHLTabBar ()

@property (nonatomic, weak) UIButton *plusButton;

@end

@implementation LHLTabBar

- (UIButton *)plusButton{
    if (_plusButton == nil) {
        UIButton *plusButton = [UIButton buttonWithType:UIButtonTypeCustom];
        [plusButton setBackgroundImage:[UIImage imageNamed:@"tabBar_publish_icon"] forState:UIControlStateNormal];
        [plusButton setBackgroundImage:[UIImage imageNamed:@"tabBar_publish_click_icon"] forState:UIControlStateHighlighted];
        [plusButton sizeToFit];
        [self addSubview:plusButton];
        _plusButton = plusButton;
    }
    return _plusButton;
}


- (void)layoutSubviews
{
    [super layoutSubviews];
    
    // 布局子控件
    NSInteger count = self.items.count + 1;
    CGFloat btnW = self.lhl_width / count;
    CGFloat btnH = self.lhl_height;
    
    NSInteger i = 0;
    for (UIButton *tabBarButton in self.subviews) {
        // 取出UITabBarButton
        if ([tabBarButton isKindOfClass:NSClassFromString(@"UITabBarButton")]) {
            if (i == 2) {
                i += 1;
            }
            tabBarButton.frame = CGRectMake(btnW * i, 0, btnW, btnH);
            i++;
        }
        // 隐藏tabBar黑线
        NSString *subFrames =  NSStringFromCGRect(tabBarButton.frame);
        NSString *blackLine = @"{{0, -0.5}, {375, 0.5}}";
        if ([subFrames isEqualToString:blackLine]) {
            tabBarButton.hidden = YES;
        }
        
    }
    // plusButton
    self.plusButton.center = CGPointMake(self.lhl_width * 0.5, self.frame.size.height * 0.5);

}



@end