1 // 2 //  RQHTabBarController.m 3 //  TabBarView 4 // 5 //  Created by apple on 15-1-13. 6 //  Copyright (c) 2015年 __MyCompanyName__. All rights reserved. 7 // 可以让storyboard中关联这个类，这个类继承UITabBarController 8  9 #import "RQHTabBarController.h"10 11 @implementation RQHTabBarController12 @synthesize selectedBtn;//也可以用Bool值来写，用来取反13 14 - (void)viewDidLoad15 {   16     17     CGRect rect = self.tabBar.frame;//拿到tabbar的大小18     [self.tabBar removeFromSuperview];//删除系统的tabbar19     20     //创建一个View取代tabbar的位置21     UIView *myView = [UIView new];22     myView.frame = CGRectMake(0, rect.origin.y-30, rect.size.width, rect.size.height+30);23     [self.view addSubview:myView];24     25     UIImageView *background = [[UIImageView alloc]initWithFrame:myView.bounds];26     background.image = [UIImage imageNamed:@"BackGroundTabBar"];27     [myView addSubview:background];28     29     for (int i=0; i<3; i++) {30         UIButton *btn = [UIButton new];31         NSString *imageName = [NSString stringWithFormat:@"TabBar%d", i + 1];  32         NSString *imageNameSel = [NSString stringWithFormat:@"TabBar%dSel", i + 1];  33         34         [btn setImage:[UIImage imageNamed:imageName] forState:UIControlStateNormal];  35         [btn setImage:[UIImage imageNamed:imageNameSel] forState:UIControlStateSelected]; 36         CGFloat x = i * myView.frame.size.width / 5;  37         btn.frame = CGRectMake(x, 0, myView.frame.size.width / 5, myView.frame.size.height+10);  38         39         [myView addSubview:btn];  40         41         btn.tag = i;//设置按钮的标记, 方便来索引当前的按钮,并跳转到相应的视图  42         43         //带参数的监听方法记得加"冒号"  44         [btn addTarget:self action:@selector(clickBtn:) forControlEvents:UIControlEventTouchUpInside];  45         46         //设置刚进入时,第一个按钮为选中状态  47         if (0 == i) {  48             btn.selected = YES;  49             self.selectedBtn = btn;  //设置该按钮为选中的按钮  50         }  51     52     }53     54     55 }56 57 - (void)clickBtn:(UIButton *)button {  58     //1.先将之前选中的按钮设置为未选中  59     self.selectedBtn.selected = NO;  60     //2.再将当前按钮设置为选中  61     button.selected = YES;  62     //3.最后把当前按钮赋值为之前选中的按钮  63     self.selectedBtn = button;  64     65     //4.跳转到相应的视图控制器. (通过selectIndex参数来设置选中了那个控制器)  66     self.selectedIndex = button.tag;  67 }  68 69 @end