完全定制UITabBarViewController

完全定制UITabBarViewController

效果

 

源码

https://github.com/YouXianMing/iOS-Project-Examples 中的 TotalCustomTabBarController

//
//  CustomTabBarViewController.h
//  TotalCustomTabBarController
//
//  Created by YouXianMing on 16/6/2.
//  Copyright © 2016年 YouXianMing. All rights reserved.
//

#import "CustomViewController.h"
@class CustomTabBarViewController;

@protocol CustomTabBarViewControllerDelegate <NSObject>

@optional

- (BOOL)customTabBarController:(CustomTabBarViewController *)tabBarController
    shouldSelectViewController:(UIViewController *)viewController
                 selectedIndex:(NSInteger)index;

- (void)customTabBarController:(CustomTabBarViewController *)tabBarController
       didSelectViewController:(UIViewController *)viewController
                 selectedIndex:(NSInteger)index;

@end

@interface CustomTabBarViewController : CustomViewController

/**
 *  CustomTabBarViewController's delegate.
 */
@property (nonatomic, weak) id <CustomTabBarViewControllerDelegate> delegate;

/**
 *  TabBar's height, default is 49.f.
 */
@property (nonatomic) CGFloat tabBarHeight;

/**
 *  The controller's index that loaded and show by CustomTabBarViewController at the first time.
 */
@property (nonatomic) NSInteger  firstLoadIndex;

/**
 *  ViewControllers.
 */
@property(nonatomic, strong) NSArray <__kindof CustomViewController *> *viewControllers;

/**
 *  Hide TabBarView or not.
 *
 *  @param hide     Hide or not.
 *  @param animated Animated or not.
 */
- (void)hideTabBarView:(BOOL)hide animated:(BOOL)animated;

#pragma mark - Used by subClass.

/**
 *  TabBarView, you should add view on it.
 */
@property (nonatomic, strong, readonly) UIView  *tabBarView;

/**
 *  Will select index, used by subClass.
 *
 *  @param index Index.
 *
 *  @return Will selected or not.
 */
- (BOOL)willSelectIndex:(NSInteger)index;

/**
 *  Did selected index, used by subClass.
 *
 *  @param index Index.
 */
- (void)didSelectedIndex:(NSInteger)index;

/**
 *  Build items in the tabBarView.
 */
- (void)buildItems;

@end

//
//  CustomTabBarViewController.m
//  TotalCustomTabBarController
//
//  Created by YouXianMing on 16/6/2.
//  Copyright © 2016年 YouXianMing. All rights reserved.
//

#import "CustomTabBarViewController.h"

@interface CustomTabBarViewController ()

@property (nonatomic, strong) UIView *contentView;
@property (nonatomic, strong) UIView *tabBarView;

@property (nonatomic, weak)   UIViewController  *currentViewController;

@end

@implementation CustomTabBarViewController

- (instancetype)init {
    
    if (self = [super init]) {
        
        _tabBarHeight   = 49.f;
        _firstLoadIndex = 0;
    }
    
    return self;
}

- (void)setup {
    
    [super setup];
    
    // Add controller's view.
    self.contentView = [[UIView alloc] initWithFrame:self.view.bounds];
    [self.view addSubview:self.contentView];
    
    // Add tabBarView.
    self.tabBarView = [[UIView alloc] initWithFrame:CGRectMake(0, self.view.frame.size.height - _tabBarHeight,
                                                               self.view.frame.size.width, _tabBarHeight)];
    [self.view addSubview:self.tabBarView];
    
    // Add ChildViewController.
    for (int i = 0; i < self.viewControllers.count; i++) {
        
        CustomViewController *customViewController = self.viewControllers[i];
        [self addChildViewController:customViewController];
    }
    
    // Build items.
    [self buildItems];
    
    // Load first show controller.
    [self.viewControllers[_firstLoadIndex] didMoveToParentViewController:self];
    [self.contentView addSubview:self.viewControllers[_firstLoadIndex].view];
    self.currentViewController = self.viewControllers[_firstLoadIndex];
    [self didSelectedIndex:_firstLoadIndex];
}

- (void)buildItems {
    
    // Overwrite by subClass.
}

- (BOOL)willSelectIndex:(NSInteger)index {
    
    if (self.delegate && [self.delegate respondsToSelector:@selector(customTabBarController:shouldSelectViewController:selectedIndex:)]) {
        
        return [self.delegate customTabBarController:self shouldSelectViewController:self.viewControllers[index] selectedIndex:index];
        
    } else {
        
        return YES;
    }
}

- (void)didSelectedIndex:(NSInteger)index {
    
    if (self.delegate && [self.delegate respondsToSelector:@selector(customTabBarController:didSelectViewController:selectedIndex:)]) {
        
        [self.delegate customTabBarController:self didSelectViewController:self.viewControllers[index] selectedIndex:index];
    }
    
    if ([self.currentViewController isEqual:self.viewControllers[index]]) {
        
        return;
    }
    
    [self transitionFromViewController:self.currentViewController toViewController:self.viewControllers[index] duration:0
                               options:UIViewAnimationOptionTransitionNone
                            animations:nil completion:^(BOOL finished) {
                                
                                self.currentViewController = self.viewControllers[index];
                            }];
}

- (void)hideTabBarView:(BOOL)hide animated:(BOOL)animated {
    
    CGRect  frame    = self.tabBarView.frame;
    CGFloat duration = 0.5f;
    
    if (hide) {
        
        if (animated) {
            
            [UIView animateWithDuration:duration delay:0 usingSpringWithDamping:1 initialSpringVelocity:0 options:UIViewAnimationOptionBeginFromCurrentState animations:^{
                
                self.tabBarView.frame = CGRectMake(0, self.view.bounds.size.height, frame.size.width, frame.size.height);
                self.tabBarView.alpha = 0.f;
                
            } completion:nil];
            
        } else {
            
            self.tabBarView.frame = CGRectMake(0, self.view.bounds.size.height, frame.size.width, frame.size.height);
            self.tabBarView.alpha = 0.f;
        }
        
    } else {
        
        if (animated) {
            
            [UIView animateWithDuration:duration delay:0 usingSpringWithDamping:1 initialSpringVelocity:0 options:UIViewAnimationOptionBeginFromCurrentState animations:^{
                
                self.tabBarView.frame = CGRectMake(0, self.view.bounds.size.height - frame.size.height,
                                                   frame.size.width, frame.size.height);
                self.tabBarView.alpha = 1.f;
                
            } completion:nil];
            
        } else {
            
            self.tabBarView.frame = CGRectMake(0, self.view.bounds.size.height - frame.size.height,
                                               frame.size.width, frame.size.height);
            self.tabBarView.alpha = 1.f;
        }
    }
}

- (void)viewDidAppear:(BOOL)animated {

    [super viewDidAppear:animated];
}

@end

说明

详细细节请参考演示项目，定制按钮需要继承控制器，在重载buildItems方法中添加相关事件即可。