在iOS当中发送电子邮件和短信-优快云博客

iOS实现发送电子邮件的方法很简单，首先导入MessageUI.framework框架，然后代码如下：

 1 #import "RPViewController.h"
 2 
 3 //添加邮件头文件
 4 #import <MessageUI/MFMailComposeViewController.h>
 5 
 6 @interface RPViewController () <MFMailComposeViewControllerDelegate>
 7 
 8 @end
 9 
10 @implementation RPViewController
11 
12 - (void)viewDidLoad
13 {
14     [super viewDidLoad];
15     // Do any additional setup after loading the view, typically from a nib.
16 }
17 
18 - (void)didReceiveMemoryWarning
19 {
20     [super didReceiveMemoryWarning];
21     // Dispose of any resources that can be recreated.
22 }
23 
24 - (IBAction)click:(id)sender {
25     if ([MFMailComposeViewController canSendMail]) {
26         MFMailComposeViewController *picker = [[MFMailComposeViewController alloc] init];
27         picker.mailComposeDelegate = self;
28         
29         //在这里可以设定邮件的默认标题/内容，也可以设置收件人等
30         [picker setSubject:@"标题"];
31         NSString *emailBody = @"邮件内容";
32         
33         [picker setMessageBody:emailBody isHTML:NO];
34         [self presentViewController:picker animated:YES completion:nil];
35 //      [picker release];
36     }
37     else {
38         //无法发送邮件，在这里给用户提示
39     }
40 }
41 
42 #pragma mark 邮件代理方法
43 - (void)mailComposeController:(MFMailComposeViewController *)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError *)error {
44     switch (result) {
45         case MFMailComposeResultCancelled:
46             //取消发送
47             break;
48         case MFMailComposeResultSaved:
49             //保存草稿
50             break;
51         case MFMailComposeResultSent:
52             //发送成功
53             break;
54         case MFMailComposeResultFailed:
55             //发送失败
56             break;
57         default:
58             break;
59     }
60     
61     [self dismissViewControllerAnimated:YES completion:nil];
62 }
63 
64 @end

首先导入邮件的头文件，之后创建一个发送邮件用的控制器，设置默认参数，然后弹出这个控制器。

令当前控制器充当邮件控制器的代理，这样一来在邮件相关事件执行之后，就能给出一些用户提示了，也要在这里收起邮件视图。

发短信的道理完全一样，只是控制器换成了MFMessageComposeViewController，代理换成了MFMessageComposeViewControllerDelegate，配置代码如下：

1     if ([MFMessageComposeViewController canSendText]) {
2         MFMessageComposeViewController *message = [[MFMessageComposeViewController alloc] init];
3         message.messageComposeDelegate = self;
4         
5         message.recipients = @[@"电话号码"];
6         message.body = @"内容";
7         
8         [self presentViewController:message animated:YES completion:nil];
9     }