OC 下自定義TabBarController（相似微博TabBarItem）

1:建立繼承於UITabBar的類MyTabBar

2:設置代理實現UITabBar的代理協議

@protocol MyTabBarDelegate <UITabBarDelegate>

 

- (void)tabBarDidClickCenterButton:(XPFTabBar *)tabBar;

 

@end

聲明代理

@property (nonatomic, weak) id<XPFTabBarDelegate> delegate;

3:在.m初始化方法重寫

- (nonnull instancetype)initWithFrame:(CGRect)frame {

    if (self = [super initWithFrame:frame]) {

        UIView * backView = [[UIView alloc]init];

        backView.backgroundColor = [UIColor whiteColor];

        backView.layer.cornerRadius = 32.5;

        backView.layer.masksToBounds = YES;

        [self addSubview:backView];

        [backView mas_makeConstraints:^(MASConstraintMaker *make) {

            make.centerX.equalTo(self.mas_centerX);

            make.top.equalTo(@0).offset(-15);

            make.width.equalTo(@65);

            make.height.equalTo(@65);

        }];

        UIButton *publishButton = [[UIButton alloc] init];

        [publishButton setBackgroundImage:[UIImage imageNamed:@"WALLET"] forState:UIControlStateNormal];

        [publishButton setBackgroundImage:[UIImage imageNamed:@"WALLET"] forState:UIControlStateHighlighted];

        publishButton.layer.cornerRadius = 29;

        publishButton.layer.masksToBounds = YES;

        [backView addSubview:publishButton];

        [publishButton mas_makeConstraints:^(MASConstraintMaker *make) {

            make.centerX.equalTo(backView.mas_centerX);

            make.centerY.equalTo(backView.mas_centerY);

            make.width.equalTo(@58);

            make.height.equalTo(@58);

        }];

        [publishButton addTarget:self action:@selector(publishClick) forControlEvents:UIControlEventTouchUpInside];

    }

    return self;

}

- (void)publishClick {

    [self.delegate tabBarDidClickCenterButton:self];

    

}

//從新設置位置

- (void)layoutSubviews

{

    [super layoutSubviews];

    

    // 原來的4個

    CGFloat width = self.xpf_width / 5;

    int index = 0;

    for (UIControl *control in self.subviews) {

        if (![control isKindOfClass:[UIControl class]] || [control isKindOfClass:[UIButton class]]) continue;

        control.xpf_width = width;

        control.xpf_x = index > 1 ? width * (index + 1) : width * index;

        if (index == 1) {

        }

        index++;

    }

   

}

4：建立繼承於UITabBarController的MyTabBarController

//重寫initialze,定義TabBar

+ (void)initialize {

    UITabBarItem *appearance = [UITabBarItem appearance];

    NSMutableDictionary *attrs = [NSMutableDictionary dictionary];

    attrs[NSForegroundColorAttributeName] = [UIColor darkGrayColor];

    [appearance setTitleTextAttributes:attrs forState:UIControlStateSelected];

//    [[UITabBar appearance] setBackgroundImage:[UIImage imageNamed:@"BG_image"]];  //tabbar-light

    [[UITabBar appearance] setBackgroundColor:[UIColor whiteColor]];

    

}

- (void)viewDidLoad {

    

    // 替換tabbar

    MyTabBar *tabBar = [[MyTabBar alloc] init];

    tabBar.adDelegate = self;

    [self setValue:tabBar forKeyPath:@"tabBar"];

    // 添加

    [self setupChildViewControllers];

    //去掉頂部的線的效果,即陰影圖片和背景圖片同樣時

    CGRect rect = CGRectMake(0, 0, MAINSCREEN.size.width, 1);

    UIGraphicsBeginImageContext(rect.size);

    CGContextRef context = UIGraphicsGetCurrentContext();

    CGContextSetFillColorWithColor(context, [[UIColor clearColor] CGColor]);

    CGContextFillRect(context, rect);

    UIImage *img = UIGraphicsGetImageFromCurrentImageContext();

    UIGraphicsEndImageContext();

    [self.tabBar setBackgroundImage:img];

    [self.tabBar setShadowImage:img];

}

- (void)setupChildViewControllers {

    [self addAppearance];

 

}

 

#pragma mark - <添加一個子控制器>

- (void)setUpOneChildViewController:(UIViewController *)vc title:(NSString *)title image:(NSString *)image selImage:(NSString *)selImage {

    vc.navigationItem.title = title;

    vc.tabBarItem.title = title;

    vc.tabBarItem.image = [UIImage imageNamed:image];

    vc.tabBarItem.selectedImage = [[UIImage imageNamed:selImage] imageWithRenderingMode:(UIImageRenderingModeAlwaysOriginal)];

    [self addChildViewController:[[NavigationController alloc] initWithRootViewController:vc]];

}

 

#pragma mark - 設置顏色

- (void)addAppearance {

    [UINavigationBar appearance];

    NSMutableDictionary *attrs = [NSMutableDictionary dictionary];

    attrs[NSFontAttributeName] = [UIFont systemFontOfSize:10];

    // 未選中的顏色

    attrs[NSForegroundColorAttributeName] = [UIColor colorWithRed:138/255.0 green:138/255.0 blue:138/255.0 alpha:1.0];

    NSMutableDictionary *selectedAttrs = [NSMutableDictionary dictionary];

    selectedAttrs[NSFontAttributeName] = attrs[NSFontAttributeName];

    // 點擊後的顏色

    selectedAttrs[NSForegroundColorAttributeName] = [UIColorChange colorwithHexString:MAINCOLOR];

    UITabBarItem *item = [UITabBarItem appearance];

    [item setTitleTextAttributes:attrs forState:UIControlStateNormal];

    [item setTitleTextAttributes:selectedAttrs forState:UIControlStateSelected];

}

 

 

#pragma mark - TabBarDelegate點擊中間按鈕觸發的方法

- (void)tabBarDidClickCenterButton:(XPFTabBar *)tabBar {

    self.wvc = [[WalletViewController alloc]init];

    self.wvc.view.backgroundColor = [UIColor colorWithWhite:0 alpha:0.5];

    [self.wvc.closeButton addTarget:self action:@selector(closeClick:) forControlEvents:UIControlEventTouchUpInside];

    [[UIApplication sharedApplication].keyWindow.rootViewController.view addSubview:self.wvc.view];

}

- (void)closeClick:(UIButton *)sender{

    [self.wvc.view removeFromSuperview];

    self.wvc = nil;

}

// 手勢點擊事件

- (void)touch {

    [self remove_adVeiw];

}

 

/** 刪除 view */

- (void)remove_adVeiw {

    [adView removeFromSuperview];

}