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步进UIStepper、滑动块UISlider：当它们作为事件,被触发时，它们的值会发生改变。正因为如此,触发该事件时，可以一张一张翻阅浏览图片,，，，
步进UIStepper：
@property(nonatomic) double minimumValue; // default 0. must be less than maximumValue
@property(nonatomic) double maximumValue; // default 100. must be greater than minimumValue
@property(nonatomic) double stepValue; // default 1. must be greater than 0，每次步进的距离
1 //滑动块触发事件(值value发生改变,范围mininum~maxnum)
2 - (IBAction)sliderValueChange:(UISlider *)sender
3 {
4 NSLog(@"%lf",sender.value);
5 //将滑动块的值取出并赋给步进,使得步进和滑动块事件状态相同
6 [self.stepper setValue:sender.value];
7 }
滑动块UIStepper：
@property(nonatomic) float value; // default 0.0. this value will be pinned to min/max
@property(nonatomic) float minimumValue; // default 0.0. the current value may change if outside new min value
@property(nonatomic) float maximumValue; // default 1.0. the current value may change if outside new max value
1 //步进触发事件(值value发生改变,范围mininum~maxnum，可以设置步进大小step值)
2 - (IBAction)stepperValueChange:(UIStepper *)sender
3 {
4 NSLog(@"%lf",sender.value);
5 //将步进的值取出并赋给滑动块,使得步进和滑动块事件状态相同
6 [self.slider setValue:sender.value];
7 }
开关UISwitch:
@property(nonatomic,getter=isOn) BOOL on; //有两种状态,开on或关off
1 //开关触发事件(状态state只有两种形式:on、off)
2 - (IBAction)switchValueChange:(UISwitch *)sender
3 {
4 NSLog(@"%@",sender.isOn?@"开":@"关");
5 }
以下用步进和滑动块、开关做的一个图片浏览器
源码如下：
1 // ViewController.m
2 // 02-图片浏览器
3 //
4 // Created by ma c on 15/8/27.
5 // Copyright (c) 2015年 bjsxt. All rights reserved.
6 //
7
8 #import "ViewController.h"
9
10 @interface ViewController ()
11 @property (weak, nonatomic) IBOutlet UILabel *labelTitle;
12 @property (weak, nonatomic) IBOutlet UILabel *labelInfo;
13 @property (weak, nonatomic) IBOutlet UIImageView *imageView;
14 @property (weak, nonatomic) IBOutlet UIStepper *stepper;
15 @property (weak, nonatomic) IBOutlet UISlider *slider;
16 @property (strong,nonatomic) NSArray *imageInfos;
17 @property (assign,nonatomic) NSInteger index;//显示当前图片的索引
18 @property (assign,nonatomic) NSInteger total;//图片的个数
19 @end
20
21 @implementation ViewController
22 - (IBAction)stepperValueChange:(UIStepper *)sender
23 {
24 [self.slider setValue:sender.value];
25 self.index = [self.stepper value];
26 [self setImageIndex:self.index];
27 }
28 - (IBAction)sliderValueChange:(UISlider *)sender
29 {
30 [self.stepper setValue:sender.value];
31 self.index = [self.slider value];
32 [self setImageIndex:self.index];
33 }
34
35 - (void)viewDidLoad {
36 [super viewDidLoad];
37 //加载图片信息
38 NSString *path = [[NSBundle mainBundle] pathForResource:@"images" ofType:@"plist"];
39 self.imageInfos = [NSArray arrayWithContentsOfFile:path];
40
41
42 //初始化
43 self.total = [self.imageInfos count];
44 self.index = 0;
45
46 self.stepper.minimumValue = 0;
47 self.stepper.maximumValue = self.total - 1;
48 self.stepper.value = 0;
49 self.stepper.stepValue = 1;
50
51 self.slider.minimumValue = 0;
52 self.slider.maximumValue = self.total - 1;
53 self.slider.value = 0;
54
55
56 self.imageView.contentMode = UIViewContentModeScaleAspectFit;
57 [self setImageIndex:0];
58
59 }
60
61 -(void)setImageIndex:(NSUInteger)index
62 {
63
64 //取出数组中的字典
65 NSDictionary *dicImage = self.imageInfos[index];
66 NSString *imageName = [dicImage objectForKey:@"icon"];
67 NSString *imageTitle = [dicImage objectForKey:@"title"];
68
69 //设置显示的图片
70 self.imageView.image = [UIImage imageNamed:imageName];
71
72 //设置显示的图片的标题
73 self.labelTitle.text = imageTitle;
74
75 //设置当前信息：索引/总数
76 self.labelInfo.text = [NSString stringWithFormat:@"%ld/%ld",self.index+1,self.total];
77 }
78
79 - (void)didReceiveMemoryWarning {
80 [super didReceiveMemoryWarning];
81 // Dispose of any resources that can be recreated.
82 }
83
84 @end
iOS:步进UIStepper、滑动块UISlider、开关UISwitch的基本使用
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原文地址：http://www.cnblogs.com/daxiong520/p/4915949.html
