iOS App内发送短信

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>

具体的发送代码:

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        #pragma mark -    #pragma mark SMS    -(IBAction)showSMSPicker:(id)sender {      // The MFMessageComposeViewController class is only available in iPhone OS 4.0 or later.      // So, we must verify the existence of the above class and log an error message for devices      //     running earlier versions of the iPhone OS. Set feedbackMsg if device doesn't support      //     MFMessageComposeViewController API.      Class messageClass = (NSClassFromString(@"MFMessageComposeViewController"));      if (messageClass != nil) {          // Check whether the current device is configured for sending SMS messages          if ([messageClass canSendText]) {              [self displaySMSComposerSheet];          }          else {              [UIAlertView quickAlertWithTitle:@"设备没有短信功能" messageTitle:nil dismissTitle:@"关闭"];          }      }      else {          [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"];      }    }    -(void)displaySMSComposerSheet    {      MFMessageComposeViewController *picker = [[MFMessageComposeViewController alloc] init];      picker.messageComposeDelegate = self;      NSMutableString* absUrl = [[NSMutableString alloc] initWithString:web.request.URL.absoluteString];      [absUrl replaceOccurrencesOfString:@"http://i.aizheke.com" withString:@"http://m.aizheke.com" options:NSCaseInsensitiveSearch range:NSMakeRange(0, [absUrl length])];      picker.body=[NSString stringWithFormat:@"我在爱折客上看到：%@ 可能对你有用，推荐给你！link：%@"                                          ,[web stringByEvaluatingJavaScriptFromString:@"document.title"]                                          ,absUrl];      [absUrl release];      [self presentModalViewController:picker animated:YES];      [picker release];    }    - (void)messageComposeViewController:(MFMessageComposeViewController *)controller                   didFinishWithResult:(MessageComposeResult)result {      switch (result)      {          case MessageComposeResultCancelled:              LOG_EXPR(@"Result: SMS sending canceled");              break;          case MessageComposeResultSent:              LOG_EXPR(@"Result: SMS sent");              break;          case MessageComposeResultFailed:              [UIAlertView quickAlertWithTitle:@"短信发送失败" messageTitle:nil dismissTitle:@"关闭"];              break;          default:              LOG_EXPR(@"Result: SMS not sent");              break;      }      [self dismissModalViewControllerAnimated:YES];    }