IOS-自定义TabBar

 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 RQHTabBarController
12 @synthesize selectedBtn;//也可以用Bool值来写，用来取反
13 
14 - (void)viewDidLoad
15 {   
16     
17     CGRect rect = self.tabBar.frame;//拿到tabbar的大小
18     [self.tabBar removeFromSuperview];//删除系统的tabbar
19     
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