1 #import "MassageViewController.h"
2 @interface MassageViewController()<UIScrollViewDelegate>
3 @property (nonatomic,strong) UIScrollView *PicScrollView;
4 @property (nonatomic,strong) UIPageControl *PicCtr;
5 @property (nonatomic,strong) NSTimer *timer;
6 @property (nonatomic,strong) NSMutableArray *picArr;
7 @property (nonatomic,strong) UIImageView *PicImageView;
8 @property (nonatomic,strong) UIImageView *lastImageView;
9 @end
10
11 @implementation MassageViewController
12 -(NSMutableArray *)picArr{
13 if (self.picArr==nil) {
14 _picArr = [NSMutableArray array];
15 }
16 return _picArr;
17 }
18
19 -(void)viewDidLoad{
20 self.picArr = [self loadImageData];
21 self.PicScrollView = [[UIScrollView alloc]initWithFrame:CGRectMake(0, 150, self.view.frame.size.width, 200)];
22 _PicScrollView.pagingEnabled = YES;
23 _PicScrollView.delegate = self;
24 _PicScrollView.showsHorizontalScrollIndicator = NO;
25 _PicScrollView.tag = 1000;
26 _PicScrollView.contentSize = CGSizeMake(self.PicScrollView.width * (_picArr.count), 0);
27 for (int i =0; i<_picArr.count; i++) {
28 CGFloat imgX = self.view.frame.size.width * i;
29 self.PicImageView = [[UIImageView alloc]initWithFrame:CGRectMake(imgX, 0, self.view.frame.size.width, 200)];
30 _PicImageView.image = [_picArr objectAtIndex:i];
31 [_PicScrollView addSubview:_PicImageView];
32 }
33 CGFloat imgX = CGRectGetWidth(self.view.frame)*_picArr.count;
34 _lastImageView = [[UIImageView alloc]initWithFrame:CGRectMake(imgX, 0, self.view.frame.size.width, 200)];
35 _lastImageView.image = [_picArr objectAtIndex:0];
36 [_PicScrollView addSubview:_lastImageView];
37
38
39 [self.view addSubview:_PicScrollView];
40 self.PicCtr = [[UIPageControl alloc]initWithFrame:CGRectMake((self.PicScrollView.width-150)/2, self.PicScrollView.y+200-40, 150, 30)];
41 _PicCtr.pageIndicatorTintColor = [UIColor grayColor];
42 _PicCtr.currentPageIndicatorTintColor = [UIColor redColor];
43 _PicCtr.numberOfPages = 5;
44 _PicCtr.currentPage = 0;
45 [self.view addSubview:_PicCtr];
46 [self.view bringSubviewToFront:_PicCtr];
47
48 self.timer = [NSTimer scheduledTimerWithTimeInterval:1.0 target:self selector:@selector(scrollImage) userInfo:nil repeats:YES];
49 //修改优先级与其他控件一样
50 //获取当前消息循环对象
51 NSRunLoop *runLoop = [NSRunLoop currentRunLoop];
52 //设置优先级
53 [runLoop addTimer:self.timer forMode:NSRunLoopCommonModes];
54 }
55
56 -(NSMutableArray *)loadImageData{//加载图片
57 NSMutableArray *arr = [NSMutableArray array];
58 for (int i = 0; i<5; i++) {
//为了节约内存，建议使用路径加载，注意图片不要放在Assets.xcassets里面，否则读取不到
59 NSString *imgName = [NSString stringWithFormat:@"%02d.jpg",i+1];//注意.jpg格式，图片格式统一
60 NSString *imgPath = [[NSBundle mainBundle]pathForResource:imgName ofType:nil];
61 UIImage *image = [UIImage imageWithContentsOfFile:imgPath];
62 [arr addObject:image];
63 }
64 return arr;
65 }
66
67 -(UIStatusBarStyle)preferredStatusBarStyle{
68 return UIStatusBarStyleLightContent;
69 }
70
71 -(void)scrollViewWillBeginDragging:(UIScrollView *)scrollView{
72 //停止计时器
73 [self.timer invalidate];
74 self.timer = nil;
75 }
76
77 -(void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate{
78
79 //r如果放到didscroll里面，每次自动播放都会调用，我们想要手指拖动时才调用，所以放到这里面，每次拖到第几张，白点就点亮
80 CGFloat offsetX = self.PicScrollView.contentOffset.x + self.PicScrollView.frame.size.width/2;
81 int index = offsetX/self.PicScrollView.width;
82 _PicCtr.currentPage = index;
83
84 //重新启用计时器
85 self.timer = [NSTimer scheduledTimerWithTimeInterval:1.0 target:self selector:@selector(scrollImage) userInfo:nil repeats:YES];
86 //修改优先级与其他控件一样
87 //获取当前消息循环对象
88 NSRunLoop *runLoop = [NSRunLoop currentRunLoop];
89 //设置优先级
90 [runLoop addTimer:self.timer forMode:NSRunLoopCommonModes];
91 }
92
93 -(void)scrollImage{
94 //在scrollview后面加一个imageview，和第一个图一样。
95 float offsetx = _PicScrollView.contentOffset.x;
96 offsetx += CGRectGetWidth(self.view.frame);
97 if (offsetx == CGRectGetWidth(self.view.frame)*_picArr.count) {
98 _PicCtr.currentPage = 0;
99 }else{
100 _PicCtr.currentPage = offsetx/CGRectGetWidth(self.view.frame);
101 }
102 if (offsetx>CGRectGetWidth(self.view.frame)*_picArr.count) {
103 //直接复制速度很快直接和lastImageView一样，看起来就是循环播放的
104 _PicScrollView.contentOffset= CGPointMake(0, 0);
105 _PicCtr.currentPage = 1;
106 [_PicScrollView setContentOffset:CGPointMake(CGRectGetWidth(self.view.frame), 0) animated:YES];
107 }else{
108 [_PicScrollView setContentOffset:CGPointMake(offsetx, 0) animated:YES];
109 }
110 }
111 @end
