1
2
3 1.
4
5 UIActionSheet *actionSheet = [[UIActionSheet alloc] initWithTitle: @"设置头像" delegate:self cancelButtonTitle:@"取消" destructiveButtonTitle:nil otherButtonTitles:@"选择本地图片",@"拍照", nil];
6
7 [actionSheet showInView:self.view];
8
9
10
11 //2.实现相应代理事件,代理UIActionSheetDelegate,方法如下
12
13
14
15 - (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex: (NSInteger)buttonIndex {
16
17 // 相册 0 拍照 1
18
19 switch (buttonIndex) {
20
21 case 0:
22
23 //从相册中读取
24
25 [self readImageFromAlbum];
26
27 break;
28
29 case 1:
30
31 //拍照
32
33 [self readImageFromCamera];
34
35 break;
36
37 default:
38
39 break;
40
41 }
42
43 }
44
45
46
47 //3.实现从相册读取图片功能,代码如下
48
49
50
51
52
53 //从相册中读取
54
55 - (void)readImageFromAlbum {
56
57 //创建对象
58
59 UIImagePickerController *imagePicker = [[UIImagePickerController alloc] init];
60
61 //（选择类型）表示仅仅从相册中选取照片
62
63 imagePicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
64
65 //指定代理，因此我们要实现UIImagePickerControllerDelegate, UINavigationControllerDelegate协议
66
67 imagePicker.delegate = self;
68
69 //设置在相册选完照片后，是否跳到编辑模式进行图片剪裁。(允许用户编辑)
70
71 imagePicker.allowsEditing = YES;
72
73 //显示相册
74
75 [self presentViewController:imagePicker animated:YES completion:nil];
76
77 }
78
79
80
81 //4.实现拍照功能
82
83
84
85 - (void)readImageFromCamera {
86
87 if ([UIImagePickerController isSourceTypeAvailable: UIImagePickerControllerSourceTypeCamera]) {
88
89 UIImagePickerController *imagePicker = [[UIImagePickerController alloc] init]; imagePicker.sourceType = UIImagePickerControllerSourceTypeCamera; imagePicker.delegate = self;
90
91 imagePicker.allowsEditing = YES;
92
93 //允许用户编辑
94
95 [self presentViewController:imagePicker animated:YES completion:nil];
96
97 } else {
98
99 //弹出窗口响应点击事件
100
101 UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"警告" message:@"未检测到摄像头" delegate:nil cancelButtonTitle:nil otherButtonTitles:@"确定", nil];
102
103 [alert show];
104
105 }
106
107 }
108
109
110
111 //5.图片完成处理后提交,代理方法UIPickerControllerDelegate
112
113
114
115 //图片完成之后处理
116
117 - (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingImage:(UIImage *)image editingInfo:(NSDictionary *)editingInfo {
118
119 //image 就是修改后的照片
120
121 //将图片添加到对应的视图上
122
123 [_headImageView setImage:image];
124
125 //结束操作
126
127 [self dismissViewControllerAnimated:YES completion:nil];
128
129 }
130
131
