iOS自定义tabbar，可以隐藏

通常在写项目的时候很少直接使用系统的tabbar，因为隐藏或者修改显示风格很麻烦，所以会使用自定义的。

在tabbar.h中添加代码

#import <UIKit/UIKit.h>

@interface MyTabBar : UITabBarController
@property (strong, nonatomic) UIView *tabBarView;

- (void)setTabWithArray:(NSArray *)tabArray NormalImageArray:(NSArray *)normalArray SelectedImageArray:(NSArray *)selectedArray;

@end

在tabbar.m中添加代码

#import "MyTabBar.h"

@interface MyTabBar ()
@end
@implementation MyTabBar
{
    NSInteger count;
    NSMutableArray *btnArray;
}

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // Custom initialization
        
        [[NSNotificationCenter defaultCenter]addObserver:self selector:@selector(hideTabBar:) name:@"hideTabbar" object:nil];
        [[NSNotificationCenter defaultCenter]addObserver:self selector:@selector(appearTabBar:) name:@"appearTabbar" object:nil];
    }
    return self;
}

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view from its nib.
    btnArray = [[NSMutableArray alloc]initWithCapacity:0];
    [self hideOriginalTab];
    self.tabBarView = [[UIView alloc]init];
    self.tabBarView.frame = CGRectMake(0, [UIScreen mainScreen].bounds.size.height-40, 320, 40);
    self.tabBarView.backgroundColor = [UIColor clearColor];
    [self.view addSubview:self.tabBarView];
    
}

- (void)backBtnClick:(NSNotification *)notif
{
    [self.navigationController popViewControllerAnimated:YES];
}
//隐藏tabbar
- (void)hideTabBar:(NSNotification *)notif
{
    [UIView animateWithDuration:0.2
                          delay:0.00
                        options:UIViewAnimationOptionTransitionCurlUp animations:^(void){
                            self.tabBarView.frame = CGRectMake(0, [UIScreen mainScreen].bounds.size.height, 320, 40);
                        }completion:nil];
    
}
//显示tabbar
- (void)appearTabBar:(NSNotification *)notif
{
    [UIView animateWithDuration:0.2
                          delay:0.00
                        options:UIViewAnimationOptionTransitionCurlUp animations:^(void){
                            self.tabBarView.frame = CGRectMake(0, [UIScreen mainScreen].bounds.size.height-40, 320, 40);
                        }completion:nil];
    
}
//给tabbar自定义按钮或其他控件
- (void)setTabWithArray:(NSArray *)tabArray NormalImageArray:(NSArray *)normalArray SelectedImageArray:(NSArray *)selectedArray{
    
    self.viewControllers = tabArray;
    count = [tabArray count];
    if (tabArray.count > 0) {
        
        for (int i = 0; i < [tabArray count]; i ++) {
            UIButton *btn = [UIButton buttonWithType:UIButtonTypeCustom];
            [btn setBackgroundImage:[UIImage imageNamed:[selectedArray objectAtIndex:i]] forState:UIControlStateSelected];
            [btn setBackgroundImage:[UIImage imageNamed:[normalArray objectAtIndex:i]] forState:UIControlStateNormal];
            btn.tag = i ;
            if (btn.tag == 0)
                btn.selected = YES;
            else
                btn.selected = NO;
            btn.frame = CGRectMake(320/[tabArray count]*i, 0, 320/[tabArray count], 40);
            [btn addTarget:self action:@selector(selectTab:) forControlEvents:UIControlEventTouchUpInside];
            [self.tabBarView addSubview:btn];
            [btnArray addObject:btn];
        }
    }
}

- (void)selectTab:(UIButton *)selectBtn{
    
    if(selectBtn.selected == NO)
    {
        NSInteger selectTag = selectBtn.tag;
        selectBtn.selected = YES;
        UIViewController *selectVC = [self.viewControllers objectAtIndex:selectTag];
        self.selectedViewController = selectVC;
        for(int i = 0; i < count; i++)
        {
            UIButton *btn = (UIButton *)[btnArray objectAtIndex:i];
            if (btn.tag != selectTag)
                btn.selected = NO;
            else
                btn.selected = YES;
        }
    }
}

- (void)hideOriginalTab
{
    NSArray *array = [self.view subviews];
    UIView *originalTabView = [array objectAtIndex:1];
    originalTabView.frame = CGRectMake(0,[UIScreen mainScreen].bounds.size.height, 320, 40);
    originalTabView.backgroundColor = [UIColor clearColor];
    UIView *newTabView = [array objectAtIndex:0];
    newTabView.frame = CGRectMake(0, 0, 320,[UIScreen mainScreen].bounds.size.height);
    newTabView.backgroundColor = [UIColor redColor];
    
}
- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

@end

在使用的地方根据需要添加代码

OneVC *one = [[OneVC alloc]init];
    UINavigationController *nav1 = [[UINavigationController alloc]initWithRootViewController:one];
    TwoVC *two = [[TwoVC alloc]init];
    UINavigationController *nav2 = [[UINavigationController alloc]initWithRootViewController:two];
    ThreeVC *three = [[ThreeVC alloc]init];
    UINavigationController *nav3 = [[UINavigationController alloc]initWithRootViewController:three];
    FourVC *four = [[FourVC alloc]init];
    UINavigationController *nav4 = [[UINavigationController alloc]initWithRootViewController:four];
    NSArray *controllerArray = [NSArray arrayWithObjects:nav1, nav2, nav3, nav4 ,nil];
    NSArray *NormalImageArray = [NSArray arrayWithObjects:@"lishidingdan@2x",@"quedingdingdan@2x",@"wanjiedingdan@2x",@"zaitudingdan@2x", nil];
    NSArray *SelectedImageArray = [NSArray arrayWithObjects:@"lishidingdan_anniu@2x",@"quedingdingdan_anniu@2x",@"wanjiedingdan_anniu@2x",@"zaitudingdan_anniu@2x", nil];
    
    MyTabBar *tab = [[MyTabBar alloc]init];
    [tab setTabWithArray:controllerArray NormalImageArray:NormalImageArray SelectedImageArray:SelectedImageArray];
    self.window.rootViewController = tab;

DEMO下载地址：http://download.youkuaiyun.com/detail/u011918080/6958131