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RDVTabBarController：一個非常完善的tabBarController，可以自定義角標個數，爽的停不上去。

RDVTabBarController地址：RDVTabBarController

Demo地址：歡送Star

闡明

此教程是旨在讓你疾速動手，如需愈加深層次的理解，請直接RDVTabBarController地址剖析即可；

運用

pod 'RDVTabBarController'

構造

RDVTabBar 
@interface RDVTabBar : UIView

RDVTabBarController
@interface RDVTabBarController : UIViewController 

RDVTabBarItem
@interface RDVTabBarItem : UIControl

RDVTabBarController Example Usage其實曾經很詳細了，接上去看初始化

 //VString宏定義，為了就是更好的國際化言語，適配多言語，剛好此Demo也國際化了，可以參看https://github.com/sauchye/dev_notes/issues/4 
#define VString(x)      NSLocalizedString(x, nil)

- (void)setupViewControllers{
    SYFirstViewController *firstVC = [[SYFirstViewController alloc] init];
    SYSecondViewController *secondVC = [[SYSecondViewController alloc] init];
    SYThirdViewController *thirdVC = [[SYThirdViewController alloc] init];
    firstVC.title = VString(@"Home");
    secondVC.title = VString(@"Found");
    thirdVC.title = VString(@"Me");
    self.firstNav = [[SYBaseNavigationController alloc] initWithRootViewController:firstVC];
    self.secondNav = [[SYBaseNavigationController alloc] initWithRootViewController:secondVC];
    self.thirdNav = [[SYBaseNavigationController alloc] initWithRootViewController:thirdVC];
    [self setViewControllers:@[self.firstNav, self.secondNav, self.thirdNav]];
    [self customizeTabBarForController];
}

  NSInteger index = 0;
    for (RDVTabBarItem *item in [[self tabBar] items])
    {
        item.titlePositionAdjustment = UIOffsetMake(0, 2.0);
        [item setBackgroundSelectedImage:backgroundImage withUnselectedImage:backgroundImage];
        UIImage *selectedimage = [UIImage imageNamed:[NSString stringWithFormat:@"%@_selected",[tabBarItemImages objectAtIndex:index]]];

        UIImage *unselectedimage = [UIImage imageNamed:[NSString stringWithFormat:@"%@_normal",[tabBarItemImages objectAtIndex:index]]];

        [item setFinishedSelectedImage:selectedimage withFinishedUnselectedImage:unselectedimage];

        [item setTitle:[tabBarItemTitles objectAtIndex:index]];
        item.selectedTitleAttributes = @{
                                         NSFontAttributeName: [UIFont boldSystemFontOfSize:12],
                                         NSForegroundColorAttributeName:kNAVIGATION_BAR_COLOR,
                                         };
        item.unselectedTitleAttributes = @{
                                           NSFontAttributeName: [UIFont boldSystemFontOfSize:12],
                                           NSForegroundColorAttributeName:RGB(217, 217, 217),
                                           };

        [item setTitle:[tabBarItemTitles objectAtIndex:index]];
        index++;

    }
}

這樣你的tabBar根本搭建好了，但是還需求完善一些，比方，角標設置，push隱藏等。

Push隱藏tabBar，你只需求這樣即可

 - (void)viewWillAppear:(BOOL)animated{
    [super viewWillAppear:animated];
    [[self rdv_tabBarController] setTabBarHidden:YES animated:YES];
}

設置角標數

[[self rdv_tabBarItem] setBadgeValue:@"3"];

RDVTabBarControllerDelegate，置信你看就會明白，好的辦法命名很重要啊~

/**
 * Asks the delegate whether the specified view controller should be made active.
 */
- (BOOL)tabBarController:(RDVTabBarController *)tabBarController shouldSelectViewController:(UIViewController *)viewController;

/**
 * Tells the delegate that the user selected an item in the tab bar.
 */
 * (void)tabBarController:(RDVTabBarController *)tabBarController didSelectViewController:(UIViewController *)viewController;

結語

RDVTabBarController是一個很棒的第三方tabBarController，值得我們學習和考慮。

相比傳統第三方，你會發現可以很好的定制角標，這是極好的，當然你也可以自定義；

但是不能定義兩頭凹陷的tabBar，好早之前去哪兒就是兩頭凹陷一個tabBar，不過如今去哪兒也改成傳統的tabBar了；

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更多討論,參見: http://www.IOS122.com/tag/rdvtabbarcontroller/

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