iOS开发之功能模块--关于自定义TabBar条

1 #import <UIKit/UIKit.h>
2 
3 @interface BikeTabBar : UITabBar
4 
5 @end

 1 #import "BikeTabBar.h"
 2 
 3 @interface BikeTabBar ()
 4 
 5 //@property (nonatomic,weak)UIButton *centerButton;
 6 
 7 @end
 8 
 9 @implementation BikeTabBar
10 
11 
12 
13 - (void)layoutSubviews
14 {
15     [super layoutSubviews];
16     
17     UIButton *centerButton = [UIButton buttonWithType:UIButtonTypeCustom];
18     [centerButton setImage:[UIImage imageNamed:@"tab_bar_ride0"] forState:UIControlStateNormal];
19     [centerButton setImage:[UIImage imageNamed:@"tab_bar_ride1"] forState:UIControlStateHighlighted];
20     // 一定要记得设置尺寸
21     [centerButton sizeToFit];
22     [self addSubview:centerButton];
23     
24     // 获取子按钮总数
25     NSInteger count = self.items.count;
26     CGFloat x = 0;
27     CGFloat y = 0;
28     CGFloat w = self.width / (count + 1);
29     CGFloat h = self.height;
30     
31     int i = 0;
32     // 遍历所有的tabBarButton
33     for (UIControl *tabBarButton in self.subviews) {
34         if ([tabBarButton isKindOfClass:NSClassFromString(@"UITabBarButton")]) {
35             if (i == 2) {
36                 i += 1;
37             }
38             x = i * w;
39             //  设置UITabBarButton位置
40             tabBarButton.frame = CGRectMake(x, y, w, h);
41             tabBarButton.tag = i;
42             
43             i++;
44             
45             // 监听 UIControlEventTouchDownRepeat : 短时间内连续地重复点击
46             //            [tabBarButton addTarget:self action:@selector(tabBarButtonClick:) forControlEvents:UIControlEventTouchDownRepeat];
47             [tabBarButton addTarget:self action:@selector(centerButtonClicked:) forControlEvents:UIControlEventTouchUpInside];
48         }
49     }
50     
51     // 设置加号按钮位置
52     centerButton.center = CGPointMake(UIScreenWidth * 0.5, h * 0.5);
53 }
54 
55 
56 - (void)centerButtonClicked:(UIButton*)sender{
57     
58 }
59 
60 @end