- (void)didClickSendEmailButtonAction{  if ([MFMailComposeViewController canSendMail] == YES) {  MFMailComposeViewController *mailVC = [[MFMailComposeViewController alloc] init];  //  设置代理(与以往代理不同,不是"delegate",千万不能忘记呀,代理有3步)  mailVC.mailComposeDelegate = self;  //  收件人  NSArray *sendToPerson = @[@"humingtao2014@gmail.com"];  [mailVC setToRecipients:sendToPerson];  //  抄送  NSArray *copyToPerson = @[@"humingtao2013@126.com"];  [mailVC setCcRecipients:copyToPerson];  //  密送  NSArray *secretToPerson = @[@"563821250@qq.com"];  [mailVC setBccRecipients:secretToPerson];  //  主题  [mailVC setSubject:@"hello world"];  [self presentViewController:mailVC animated:YES completion:nil];  [mailVC setMessageBody:@"魑魅魍魉,哈哈呵呵嘿嘿霍霍" isHTML:NO];  }else{  NSLog(@"此设备不支持邮件发送");  }  }  - (void)mailComposeController:(MFMailComposeViewController *)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError *)error{  switch (result) {  case MFMailComposeResultCancelled:  NSLog(@"取消发送");  break;  case MFMailComposeResultFailed:  NSLog(@"发送失败");  break;  case MFMailComposeResultSaved:  NSLog(@"保存草稿文件");  break;  case MFMailComposeResultSent:  NSLog(@"发送成功");  break;  default:  break;  }  [self dismissViewControllerAnimated:YES completion:nil];
}  //  系统发送,模拟器不支持,要用真机测试
- (void)didClickSendSystemEmailButtonAction{  NSURL *url = [NSURL URLWithString:@"humingtao2014@gmail.com"];  if ([[UIApplication sharedApplication] canOpenURL:url] == YES) {  [[UIApplication sharedApplication] openURL:url];  }else{  NSLog(@"此设备不支持");  }  } 

//  调用系统API发送短信
- (void)didClickSendMessageButtonAction{  if ([MFMessageComposeViewController canSendText] == YES) {  MFMessageComposeViewController *messageVC = [[MFMessageComposeViewController alloc] init];  //  设置代理<MFMessageComposeViewControllerDelegate>  messageVC.messageComposeDelegate = self;  //  发送To Who  messageVC.recipients = @[@"18757289870"];  messageVC.body = @"hello world";  [self presentViewController:messageVC animated:YES completion:nil];  }else{  NSLog(@"此设备不支持");  }
}  - (void)messageComposeViewController:(MFMessageComposeViewController *)controller didFinishWithResult:(MessageComposeResult)result{  switch (result) {  case MessageComposeResultCancelled:  NSLog(@"取消发送");  break;  case MessageComposeResultFailed:  NSLog(@"发送失败");  break;  case MessageComposeResultSent:  NSLog(@"发送成功");  break;  default:  break;  }  [self dismissViewControllerAnimated:YES completion:nil];  }  //  调用系统应用程序发送消息
- (void)didClickSendMessage2ButtonAction{  NSURL *url = [NSURL URLWithString:@"sms:18656348970"];  if ([[UIApplication sharedApplication] canOpenURL:url] == YES) {  [[UIApplication sharedApplication] openURL:url];  }else{  NSLog(@"失败");  }  }