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iOS App内发送短信

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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];
    }

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