iOS开发UI篇—自定义瀑布流控件（接口设计）

 1 //
 2 //  YYWaterflowView.h
 3 //  06-瀑布流01接口设计
 4 //
 5 //  Created by apple on 14-7-29.
 6 //  Copyright (c) 2014年 wendingding. All rights reserved.
 7 //
 8 
 9 #import <UIKit/UIKit.h>
10 
11 //使用瀑布流形式展示内容的控件
12 typedef enum {
13     YYWaterflowViewMarginTypeTop,
14     YYWaterflowViewMarginTypeBottom,
15     YYWaterflowViewMarginTypeLeft,
16     YYWaterflowViewMarginTypeRight,
17     YYWaterflowViewMarginTypeColumn,//每一列
18     YYWaterflowViewMarginTypeRow,//每一行
19 
20 }YYWaterflowViewMarginType;
21 
22 @class YYWaterflowViewCell,YYWaterflowView;
23 
24 /**
25  *  1.数据源方法
26  */
27 @protocol YYWaterflowViewDataSource <NSObject>
28 //要求强制实现
29 @required
30 /**
31  * （1）一共有多少个数据
32  */
33 -(NSUInteger)numberOfCellsInWaterflowView:(YYWaterflowView *)waterflowView;
34 /**
35  *  (2)返回index位置对应的cell
36  */
37 -(YYWaterflowViewCell *)waterflowView:(YYWaterflowView *)waterflowView cellAtIndex:(NSUInteger)index;
38 
39 //不要求强制实现
40 @optional
41 /**
42  *  (3)一共有多少列
43  */
44 -(NSUInteger)numberOfColumnsInWaterflowView:(YYWaterflowView *)waterflowView;
45 
46 @end
47 
48 
49 /**
50  *  2.代理方法
51  */
52 @protocol YYWaterflowViewDelegate <UIScrollViewDelegate>
53 //不要求强制实现
54 @optional
55 /**
56  *  (1)第index位置cell对应的高度
57  */
58 -(CGFloat)waterflowView:(YYWaterflowView *)waterflowView heightAtIndex:(NSUInteger)index;
59 /**
60  *  (2)选中第index位置的cell
61  */
62 -(void)waterflowView:(YYWaterflowView *)waterflowView didSelectAtIndex:(NSUInteger)index;
63 /**
64  *  (3)返回间距
65  */
66 -(CGFloat)waterflowView:(YYWaterflowView *)waterflowView marginForType:(YYWaterflowViewMarginType)type;
67 @end
68 
69 
70 /**
71  *  3.瀑布流控件
72  */
73 @interface YYWaterflowView : UIScrollView
74 /**
75  *  (1)数据源
76  */
77 @property(nonatomic,weak)id<YYWaterflowViewDataSource> dadaSource;
78 /**
79  *  (2)代理
80  */
81 @property(nonatomic,weak)id<YYWaterflowViewDelegate> delegate;
82 @end

 1 //
 2 //  YYViewController.m
 3 //  06-瀑布流01接口设计
 4 //
 5 //  Created by apple on 14-7-28.
 6 //  Copyright (c) 2014年 wendingding. All rights reserved.
 7 //
 8 
 9 #import "YYViewController.h"
10 #import "YYWaterflowView.h"
11 #import "YYWaterflowViewCell.h"
12 
13 @interface YYViewController ()<YYWaterflowViewDelegate,YYWaterflowViewDataSource>
14 
15 @end
16 
17 @implementation YYViewController
18 
19 - (void)viewDidLoad
20 {
21     [super viewDidLoad];
22     YYWaterflowView *waterflow=[[YYWaterflowView alloc]init];
23     waterflow.frame=self.view.bounds;
24     waterflow.delegate=self;
25     waterflow.dadaSource=self;
26     [self.view addSubview:waterflow];
27 }
28 
29 #pragma mark-数据源方法
30 -(NSUInteger)numberOfCellsInWaterflowView:(YYWaterflowView *)waterflowView
31 {
32     return 100;
33 }
34 -(NSUInteger)numberOfColumnsInWaterflowView:(YYWaterflowView *)waterflowView
35 {
36     return 3;
37 }
38 -(YYWaterflowViewCell *)waterflowView:(YYWaterflowView *)waterflowView cellAtIndex:(NSUInteger)index
39 {
40     YYWaterflowViewCell *cell=[[YYWaterflowViewCell alloc]init];
41     //给cell设置一个随机色
42     cell.backgroundColor=YYRandomColor;
43     return cell;
44 }
45 
46 
47 #pragma mark-代理方法
48 -(CGFloat)waterflowView:(YYWaterflowView *)waterflowView heightAtIndex:(NSUInteger)index
49 {
50     switch (index%3) {
51         case 0:return 70;
52         case 1:return 100;
53         case 2:return 80;
54         default:return 120;
55     }
56 }
57 -(CGFloat)waterflowView:(YYWaterflowView *)waterflowView marginForType:(YYWaterflowViewMarginType)type
58 {
59     switch (type) {
60         case YYWaterflowViewMarginTypeTop:
61         case YYWaterflowViewMarginTypeBottom:
62         case YYWaterflowViewMarginTypeLeft:
63         case YYWaterflowViewMarginTypeRight:
64             return 10;
65         case YYWaterflowViewMarginTypeColumn:
66         case YYWaterflowViewMarginTypeRow:
67             return 20;
68     }
69 }
70 -(void)waterflowView:(YYWaterflowView *)waterflowView didSelectAtIndex:(NSUInteger)index
71 {
72     NSLog(@"点击了%d的cell",index);
73 }
74 @end

 1 //
 2 //  Prefix header
 3 //
 4 //  The contents of this file are implicitly included at the beginning of every source file.
 5 //
 6 
 7 #import <Availability.h>
 8 
 9 #ifndef __IPHONE_5_0
10 #warning "This project uses features only available in iOS SDK 5.0 and later."
11 #endif
12 
13 #ifdef __OBJC__
14     #import <UIKit/UIKit.h>
15     #import <Foundation/Foundation.h>
16 
17 // 颜色
18 #define YYColor(r, g, b) [UIColor colorWithRed:(r)/255.0 green:(g)/255.0 blue:(b)/255.0 alpha:1.0]
19 #define YYColorRGBA(r, g, b, a) [UIColor colorWithRed:(r)/255.0 green:(g)/255.0 blue:(b)/255.0 alpha:a]
20 
21 // 随机色
22 #define YYRandomColor YYColor(arc4random_uniform(256), arc4random_uniform(256), arc4random_uniform(256))
23 #endif