IOS程序内发短信

iOS4.0新加入了MFMessageComposeViewController和MFMessageComposeViewControllerDelegate,提供了发送短信的接口,可以像发送邮件那样不用跳出程序来发送短信. 介绍可参阅Message UI
Framework Reference

一些笔记:

MFMessageComposeViewController

• 提供了操作界面
• 使用前必须检查canSendText方法,若返回NO则不应将这个controller展现出来,而应该提示用户不支持发送短信功能.
• 界面不能自行定制
• 要发送的短信的内容(body)和收件人(recipients)在展现这个controller前需初始化好,展现了之后短信内容不能通过程序来进行修改.不过用户仍然可以手工修改短信内容和选择收件人
• 用户点了发送或者取消,或者发送失败时,MFMessageComposeViewControllerDelegate 的– messageComposeViewController:didFinishWithResult:方法都能得到通知,在这里进行相应的处理

若在iOS3.0上运行的话,会提示dyld: Symbol not found: _OBJC_CLASS_$_MFMessageComposeViewController .解决方案:

1. MessageUI.framework的引入类型应选择weak(在target -> Get Info -> General -> Linked Libraries -> MessageUI.framework -> Type 里修改)
2. 不要在.h文件里直接import MessageUI/MFMessageComposeViewController.h,改为import <MessageUI/MessageUI.h>

代码:

01 #pragma mark -
02 #pragma mark SMS
03
04 -(IBAction)showSMSPicker:(id)sender {
05     //  The MFMessageComposeViewController class is only available in iPhone OS 4.0 or later.
06     //  So, we must verify the existence of the above class and log an error message for devices
07     //      running earlier versions of the iPhone OS. Set feedbackMsg if device doesn't support
08     //      MFMessageComposeViewController API.
09     Class messageClass = (NSClassFromString(@"MFMessageComposeViewController"));
10
11     if (messageClass != nil) {
12         // Check whether the current device is configured for sending SMS messages
13         if ([messageClass canSendText]) {
14             [self displaySMSComposerSheet];
15         }
16         else {
17             [UIAlertView quickAlertWithTitle:@"设备没有短信功能" messageTitle:nil dismissTitle:@"关闭"];
18         }
19     }
20     else {
21         [UIAlertView quickAlertWithTitle:@"iOS版本过低,iOS4.0以上才支持程序内发送短信" messageTitle:nil dismissTitle:@"关闭"];
22     }
23 }
24
25 -(void)displaySMSComposerSheet
26 {
27     MFMessageComposeViewController *picker = [[MFMessageComposeViewController alloc] init];
28     picker.messageComposeDelegate = self;
29
30     NSMutableString* absUrl = [[NSMutableString alloc] initWithString:web.request.URL.absoluteString];
31     [absUrl replaceOccurrencesOfString:@"http://i.aizheke.com" withString:@"http://m.aizheke.com" options:NSCaseInsensitiveSearch range:NSMakeRange(0, [absUrl length])];
32
33     picker.body=[NSString stringWithFormat:@"我在爱折客上看到：%@ 可能对你有用，推荐给你！link：%@"
34                                         ,[web stringByEvaluatingJavaScriptFromString:@"document.title"]
35                                         ,absUrl];
36     [absUrl release];
37     [self presentModalViewController:picker animated:YES];
38     [picker release];
39 }
40
41 - (void)messageComposeViewController:(MFMessageComposeViewController *)controller
42                  didFinishWithResult:(MessageComposeResult)result {
43
44     switch (result)
45     {
46         case MessageComposeResultCancelled:
47             LOG_EXPR(@"Result: SMS sending canceled");
48             break;
49         case MessageComposeResultSent:
50             LOG_EXPR(@"Result: SMS sent");
51             break;
52         case MessageComposeResultFailed:
53             [UIAlertView quickAlertWithTitle:@"短信发送失败" messageTitle:nil dismissTitle:@"关闭"];
54             break;
55         default:
56             LOG_EXPR(@"Result: SMS not sent");
57             break;
58     }
59     [self dismissModalViewControllerAnimated:YES];
60 }