步骤如下：
新建此类的代理属性必须遵守的协议：
新建photobuttondelegate.h如下：
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
|
//
// photobuttondelegate.h
// 作业整理
//
// created by apple on 15/9/16.
// copyright (c) 2015年 liuxun. all rights reserved.
//
#import <foundation/foundation.h>
@class imageandphotos;
@protocol photobuttondelegate <nsobject>
-(void) setphotobutton:(imageandphotos *) imgandp;
@end
|
新建此类如下：
编辑imageandphotos.h如下：
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
|
//
// imageandphotos.h
// 作业整理
//
// created by apple on 15/9/16.
// copyright (c) 2015年 liuxun. all rights reserved.
//
#import <foundation/foundation.h>
#import "photobuttondelegate.h"
@class uibasescrollview;
@interface imageandphotos : nsobject <uialertviewdelegate,uiactionsheetdelegate,uiimagepickercontrollerdelegate,uinavigationcontrollerdelegate>
@property (nonatomic, strong) uiviewcontroller *controller;
@property (nonatomic, strong) uiimage *img;
@property (nonatomic, strong) uibutton *btn;
@property (nonatomic, weak) id<photobuttondelegate> delegate;
-(id)initwithcontroler:(uiviewcontroller *) crtler andbutton:(uibutton *) button;
@end
|
编辑imageandphotos.m如下：
|
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
|
//
// imageandphotos.m
// 作业整理
//
// created by apple on 15/9/16.
// copyright (c) 2015年 liuxun. all rights reserved.
//
#import "imageandphotos.h"
@implementation imageandphotos
-(id)initwithcontroler:(uiviewcontroller *) crtler andbutton:(uibutton *) button
{
if (self = [super init]) {
self.controller = crtler;
self.btn = button;
[self cameraevent];
}
return self;
}
-(void)cameraevent
{
[self.btn addtarget:self action:@selector(showactionsheet) forcontrolevents:uicontroleventtouchupinside];
}
-(void) showactionsheet
{
uiactionsheet *actionsheet = [[uiactionsheet alloc] initwithtitle:nil delegate:self cancelbuttontitle:@"取消" destructivebuttontitle:nil otherbuttontitles:@"拍照",@"我的相册", nil nil];
[actionsheet showinview:self.controller.view];
}
// 实现uiactionsheetdelegate协议中监听按钮的方法
-(void) actionsheet:(uiactionsheet *)actionsheet clickedbuttonatindex:(nsinteger)buttonindex
{
if (buttonindex == 0) {
[self addcamera];
}
else if(buttonindex == 1)
{
[self addphoto];
}
}
-(void)addcamera
{
// 判断是否可以打开一个相机
if ([uiimagepickercontroller issourcetypeavailable:uiimagepickercontrollersourcetypecamera]) {
// 创建一个调出拍照的控制器
uiimagepickercontroller *picker = [[uiimagepickercontroller alloc] init];
picker.delegate = self;
picker.allowsediting = yes;
// 摄像头
nslog(@"++++addcamera++++");
picker.sourcetype = uiimagepickercontrollersourcetypecamera;
[self.controller presentviewcontroller:picker animated:yes completion:^{
}];
}
else
{
[self showalertview];
}
}
-(void) addphoto
{ // 相册可以用模拟器打开，但是相机不可以用模拟器打开
if ([uiimagepickercontroller issourcetypeavailable:uiimagepickercontrollersourcetypephotolibrary]) {
uiimagepickercontroller *picker = [[uiimagepickercontroller alloc] init];
picker.delegate = self;
picker.allowsediting = yes; // 是否可以编辑
// 打开相册选择相片
picker.sourcetype = uiimagepickercontrollersourcetypephotolibrary; //表示管理图库
[self.controller presentviewcontroller:picker animated:yes completion:nil];
}
else
{
[self showalertview];
}
}
-(void)showalertview
{
uialertview *alert =[[uialertview alloc] initwithtitle:@"提示" message:@"你没有摄像头" delegate:self cancelbuttontitle:@"确定" otherbuttontitles:nil, nil nil];
[alert show];
}
// 代理协议中的方法
// 拍摄完成后,其实是选中图片后的方法要执行的方法，如果是照相的话则选中拍照后的相片
-(void) imagepickercontroller:(uiimagepickercontroller *)picker didfinishpickingmediawithinfo:(nsdictionary *)info
{
// 得到图片
self.img = [info objectforkey:uiimagepickercontrollereditedimage];
// 图片存入图库
if (picker.sourcetype == uiimagepickercontrollersourcetypecamera) {
uiimagewritetosavedphotosalbum(self.img, nil, nil, nil); // 如果是相机
}
[self.controller dismissviewcontrolleranimated:yes completion:^{
if ([self.delegate respondstoselector:@selector(setphotobutton:)]) {
[self.delegate setphotobutton:self];
}
}];
}
//选中图片点击cancel按钮后执行的方法
-(void)imagepickercontrollerdidcancel:(uiimagepickercontroller *)picker
{
[self.controller dismissviewcontrolleranimated:yes completion:nil];
}
@end
|
此类新建完成，在自定义控件中的应用如下：（此自定义控件是一个上传图片的scrollview）
新建自定义控件类编辑uibasescrollview.h如下
|
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
|
//
// uibasescrollview.h
// 作业整理
//
// created by apple on 15/9/16.
// copyright (c) 2015年 liuxun. all rights reserved.
//
#import "uibaseview.h"
#import "imageandphotos.h"
@interface uibasescrollview : uibaseview<photobuttondelegate>
@property (nonatomic, strong) nsmutablearray *arrayimgs;
@property (nonatomic, strong) uiscrollview *scroll;
@property (nonatomic, strong) imageandphotos *imgchange;
@property (nonatomic, strong) uibutton *btnimg;
@property (nonatomic, strong) uiimageview *imgv;
-(id)initwithframe:(cgrect)frame currencontr:(uiviewcontroller *) crtl;
@end
编辑定义控件的.m文件如下：
[objc] view plain copy
//
// uibasescrollview.m
// 作业整理
//
// created by apple on 15/9/16.
// copyright (c) 2015年 liuxun. all rights reserved.
//
#import "uibasescrollview.h"
@implementation uibasescrollview
-(id)initwithframe:(cgrect)frame currencontr:(uiviewcontroller *) crtl
{
if (self = [super initwithframe:frame]) {
self.scroll = [[uiscrollview alloc] initwithframe:cgrectmake(0, 0, self.frame.size.width, self.frame.size.height)];
self.btnimg = [[uibutton alloc] initwithframe:cgrectmake(10, 10, frame.size.height-20, frame.size.height-20)];
[self.btnimg setimage:[uiimage imagenamed:@"tizhong_photo_increase_bj"] forstate:uicontrolstatenormal];
self.imgchange = [[imageandphotos alloc] initwithcontroler:crtl andbutton:self.btnimg];
self.scroll.showshorizontalscrollindicator = yes;
self.imgchange.delegate = self;
[self.scroll addsubview:self.btnimg];
[self addsubview:self.scroll];
}
return self;
}
-(void)setphotobutton:(imageandphotos *)imgandp
{
nslog(@"%@&&&&&&&&&",self.imgchange.img);
if (imgandp.img) {
self.imgv =[[uiimageview alloc] initwithframe: self.btnimg.frame ];
self.imgv.image = imgandp.img;
self.imgv.backgroundcolor = [uicolor yellowcolor];
[self.scroll addsubview:self.imgv];
self.btnimg.frame = cgrectmake(cgrectgetmaxx(self.imgv.frame)+10, self.imgv.frame.origin.y, self.imgv.frame.size.width, self.imgv.frame.size.height);
self.scroll.contentsize = cgsizemake(cgrectgetmaxx(imgandp.btn.frame)+10, 0);
if (cgrectgetmaxx(self.btnimg.frame)>self.scroll.frame.size.width) {
self.scroll.contentoffset = cgpointmake(self.btnimg.frame.origin.x-10, 0);
}
}
}
@end
|
在控制器中使用此自定义控件如下：
|
1
2
|
uibasescrollview *det5 = [[uibasescrollview alloc] initwithframe:cgrectmake
(20, cgrectgetmaxy(det4.frame)+20, width-40, 80) currencontr:self];
|
运行结果如下：
在控制器中直接使用此相册类也与此类似，不同之处就是让所在控制器遵守类属性的协议，然后实现即可，在此不再奥数。
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/u013087513/article/details/48524009