自定义UITabBarController

//
//  RootTabViewController.m
//  jue2
//
//  Created by wangdalei on 14-6-19.
//  Copyright (c) 2014年 王大雷. All rights reserved.
//

#import "RootTabViewController.h"
#import "OneViewController.h"
#import "TowViewController.h"
#import "ThreeViewController.h"

@interface RootTabViewController (){
    NSMutableArray *buttons;
    UIImageView *slideBg;
}
@property (nonatomic,strong) NSMutableArray *buttons;

- (void)hideRealTabBar;

- (void)customTabBar;

- (void)selectedTab:(UIButton *)button;

@end

@implementation RootTabViewController
@synthesize buttons;

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil {
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        
        OneViewController *oneVC = [[OneViewController alloc]initWithNibName:@"OneViewController" bundle:nil];
        TowViewController *towVC = [[TowViewController alloc]initWithNibName:@"TowViewController" bundle:nil];
        
        oneVC.title = @"1";
        towVC.title = @"2";
        
        UINavigationController *oneNav = [[UINavigationController alloc] initWithRootViewController:oneVC];
        UINavigationController *towNav = [[UINavigationController alloc] initWithRootViewController:towVC];
        
        self.viewControllers = [NSArray arrayWithObjects:oneNav,towNav,nil];
        
    }
    return self;
}

-(void)viewWillAppear:(BOOL)animated{
    [super viewWillAppear:animated];
    [self hideRealTabBar];
    [self customTabBar];
}

- (void)viewDidLoad {
    [super viewDidLoad];
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
}

- (void)hideRealTabBar{
    for(UIView *view in self.view.subviews){
        if([view isKindOfClass:[UITabBar class]]){
            view.hidden = YES;
            break;
        }
    }
}

- (void)customTabBar{
    //背景
    UIView *barView = [[UIView alloc]initWithFrame:self.tabBar.frame];;
    [barView setBackgroundColor:[UIColor blueColor]];
    [self.view addSubview:barView];
    
    //按钮
    self.buttons = [NSMutableArray arrayWithCapacity:4];
    double _width = 320 / 4;
    double _height = self.tabBar.frame.size.height;
    for (int i = 0; i < 4; i++) {
        UIButton *btn = [UIButton buttonWithType:UIButtonTypeSystem];
        btn.frame = CGRectMake(i*_width,self.tabBar.frame.origin.y, _width, _height);
        [btn addTarget:self action:@selector(selectedTab:) forControlEvents:UIControlEventTouchUpInside];
        btn.tag = i;
        [btn setTitle:@"xx" forState:UIControlStateNormal];
        [self.buttons addObject:btn];
        [self.view  addSubview:btn];
    }
    [self selectedTab:[self.buttons objectAtIndex:0]];
}

- (void)selectedTab:(UIButton *)button{
    if (button.tag == 3) {
        ThreeViewController *threeVC = [[ThreeViewController alloc]initWithNibName:@"ThreeViewController" bundle:nil];
        [self.navigationController pushViewController:threeVC animated:YES];
    } else {
        self.selectedIndex = button.tag;
    }
}
@end