截图
1.使用
|
1
2
3
4
|
LJPhotoGroupView *_ljPhotoGroupView = [[LJPhotoGroupView alloc]initWithItem:self.ljUrlArray]; _ljPhotoGroupView.backgroundColor = [UIColor blackColor]; _ljPhotoGroupView.frame = CGRectMake(0, 0, kDEVICEWIDTH, kDEVICEHEIGHT); [_ljPhotoGroupView showHintView:self]; |
2.源码
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
|
#import "LJPhotoGroupView.h" #import "LJWebIDataManager.h" @interface LJPhotoGroupCellView() @property (nonatomic, strong) UIImageView *ljImageview; @end @implementation LJPhotoGroupCellView - (instancetype)initWithFrame:(CGRect)frame url:(NSString*)imageurl { self = [super initWithFrame:frame]; if (self) { [self addSubview:self.ljImageview]; ／／这里大家可以换成自己的网络请求图片的方法 [[LJWebIDataManager sharedInstances]retrieveData:imageurl successBlock:^(NSData *netData, NSString *progressStr, BOOL isFinished) { //在主线程中刷新界面 dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{ UIImage *_ljImage = [UIImage imageWithData: netData scale:0.3]; @myWeakify(self); dispatch_async(dispatch_get_main_queue(), ^{ @myStrongify(self); self.ljImageview.image = _ljImage; }); }); }]; } return self; } - (UIImageView*)ljImageview { if (!_ljImageview) { _ljImageview = UIImageView.new; _ljImageview.frame = CGRectMake(15, 0, kDEVICEWIDTH - 30, 130); _ljImageview.backgroundColor = [UIColor redColor]; UIGestureRecognizer *_tap = [[UIGestureRecognizer alloc]initWithTarget:self action:@selector(dismissHintView)]; [_ljImageview addGestureRecognizer:_tap]; } return _ljImageview; } @end @interface LJPhotoGroupView()<UIScrollViewDelegate> @property (nonatomic, strong) UIScrollView *ljScrollView; @property (nonatomic, strong) NSArray *ljItemArray; @property (nonatomic, strong) UIImageView *ljImageview; @property (nonatomic, strong) UIPageControl *ljPageControl; @end @implementation LJPhotoGroupView - (instancetype)initWithItem:(NSArray*)ljArray { self = [super init]; if (self) { self.ljItemArray = [NSArray arrayWithArray:ljArray]; [self addSubview:self.ljScrollView]; [self addSubview:self.ljPageControl]; for (int i = 0; i < self.ljItemArray.count; i++) { //方法一：直接设置每个cell的X坐标 // LJPhotoGroupCellView *_cell = [[LJPhotoGroupCellView alloc]initWithFrame:CGRectMake((kDEVICEWIDTH )*i, 0, kDEVICEWIDTH, 130) url:self.ljItemArray[i]]; //方法二:先不用考虑cell的X坐标，在下面设置X的坐标 LJPhotoGroupCellView *cell = [[LJPhotoGroupCellView alloc]initWithFrame:self.ljScrollView.bounds url:self.ljItemArray[i]]; UITapGestureRecognizer *_tap = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(dismissHintView)]; [cell addGestureRecognizer:_tap]; [self.ljScrollView addSubview:cell]; } //方法二:设置cell的X坐标 // 计算imageView的位置 [self.ljScrollView.subviews enumerateObjectsUsingBlock:^(LJPhotoGroupCellView *cell, NSUInteger idx, BOOL *stop) { // 调整x => origin => frame CGRect frame = cell.frame; frame.origin.x = idx * frame.size.width; cell.frame = frame; }]; self.ljPageControl.currentPage = 0; } return self; } - (UIScrollView*)ljScrollView { if (!_ljScrollView) { _ljScrollView = UIScrollView.new; _ljScrollView.frame = CGRectMake(0, 250, kDEVICEWIDTH, 130); _ljScrollView.delegate = self; //_scrollView.scrollsToTop = NO; _ljScrollView.pagingEnabled = YES; _ljScrollView.contentSize = CGSizeMake(_ljScrollView.bounds.size.width * self.ljItemArray.count, 130); //_scrollView.alwaysBounceHorizontal = groupItems.count > 1; // _scrollView.showsHorizontalScrollIndicator = NO; //_scrollView.showsVerticalScrollIndicator = NO; //_scrollView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight; //_scrollView.delaysContentTouches = NO; //_scrollView.canCancelContentTouches = YES; } return _ljScrollView; } - (UIPageControl *)ljPageControl { if (_ljPageControl == nil) { // 分页控件，本质上和scrollView没有任何关系，是两个独立的控件 _ljPageControl = [[UIPageControl alloc] init]; // 总页数 _ljPageControl.numberOfPages = self.ljItemArray.count; CGSize size = [_ljPageControl sizeForNumberOfPages:self.ljItemArray.count]; _ljPageControl.bounds = CGRectMake(0, 0, size.width, size.height); _ljPageControl.center = CGPointMake(self.center.x, 380); // 设置颜色 _ljPageControl.pageIndicatorTintColor = [UIColor redColor]; //当前页面的颜色 _ljPageControl.currentPageIndicatorTintColor = [UIColor whiteColor]; [_ljPageControl addTarget:self action:@selector(pageChanged:) forControlEvents:UIControlEventValueChanged]; } return _ljPageControl; } // 分页控件的监听方法 - (void)pageChanged:(UIPageControl *)page { NSLog(@"%ld", (long)page.currentPage); // 根据页数，调整滚动视图中的图片位置 contentOffset self.scrollView.bounds.size.width CGFloat x = page.currentPage * (kDEVICEWIDTH); [self.ljScrollView setContentOffset:CGPointMake(x, 0) animated:YES]; } - (UIImageView*)ljImageview { if (!_ljImageview) { _ljImageview = UIImageView.new; _ljImageview.frame = CGRectMake(0, 0, kDEVICEWIDTH, kDEVICEHEIGHT); _ljImageview.backgroundColor = [UIColor redColor]; UIGestureRecognizer *_tap = [[UIGestureRecognizer alloc]initWithTarget:self action:@selector(dismissHintView)]; [_ljImageview addGestureRecognizer:_tap]; } return _ljImageview; } - (void)scrollViewDidScroll:(UIScrollView *)scrollView { //CGFloat floatPage = _scrollView.contentOffset.x / _scrollView.width; //NSInteger page = _scrollView.contentOffset.x / _scrollView.width; } - (void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate{ if (!decelerate) { } } #pragma mark - ScrollView的代理方法 // 滚动视图停下来，修改页面控件的小点（页数） - (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView { // 停下来的当前页数 NSLog(@"%@", NSStringFromCGPoint(scrollView.contentOffset)); // 计算页数 int page = scrollView.contentOffset.x / scrollView.bounds.size.width; self.ljPageControl.currentPage = page; } - (void)showHintView:(UIView*)view { //[view addSubview:self]; [[UIApplication sharedApplication].delegate.window.rootViewController.view addSubview:self]; self.alpha = 0.0; [UIView animateWithDuration:0.3 delay:0 options:UIViewAnimationOptionCurveEaseOut animations:^{ self.alpha = 1.0; } completion:^(BOOL finished) { }]; } - (void)dismissHintView { [UIView animateWithDuration:0.3 delay:0 options:UIViewAnimationOptionCurveEaseIn animations:^{ self.alpha = 0.0; } completion:^(BOOL finished){ [self removeFromSuperview]; }]; } @end |
如有疑问请留言或者到本站社区交流讨论，感谢阅读，希望能帮助到大家，谢谢大家对本站的支持！
原文链接：http://blog.csdn.net/robinson_911/article/details/76038882
