IOS 发送短信

#调用短信只初始化号码，不能初始化短信内容。

1	UIApplication.sharedApplication().openURL(NSURL(string: "sms://185****"))

#发送初始化号码和内容的短信

加入：MessageUI.framework
import MessageUI
实现代理 MFMessageComposeViewControllerDelegate
发送短信

在项目中使用了FDFullscreenPopGesture手势，导致在编辑短信页面没有标题和取消按钮

解决办法：自定义标题和取消按钮


import MessageUI
// 实现代理
extension SmsTextVC: MFMessageComposeViewControllerDelegate{
    // MARK: MFMessageComposeViewControllerDelegate

    func messageComposeViewController(controller: MFMessageComposeViewController, didFinishWithResult result: MessageComposeResult) {
        controller.dismissViewControllerAnimated(true, completion: nil)
        switch result{
        case MessageComposeResult.Sent:
            print("短信已发送")
        case MessageComposeResult.Cancelled:
            print("短信已取消")
        case MessageComposeResult.Failed:
            print("短信发送失败")
        default:
            break
        }
    }
}


/// 发送短信 viewcontroller 页面
private var messageComposeController:MFMessageComposeViewController!
/// 在短信页面返回
func backForMFMessageCompose(){
    if messageComposeController != nil {
        messageComposeController.dismissViewControllerAnimated(true, completion: nil)
    }
}
/// 发送短信
func sendSMS(){	
    if MFMessageComposeViewController.canSendText(){
            messageComposeController = MFMessageComposeViewController()
            messageComposeController.messageComposeDelegate = self
            // 收信人
            messageComposeController.recipients = receive.componentsSeparatedByString(",")
            // 消息内容
            messageComposeController.body = txt
            
            //设置标题
            let navigationItem = messageComposeController.viewControllers.last.navigationItem
            navigationItem.title = "新短信"
            navigationItem.rightBarButtonItem = UIBarButtonItem(title: "取消", style: UIBarButtonItemStyle.Plain, target: self, action: #selector(self.backForMFMessageCompose))

            self.presentViewController(messageComposeController, animated: true, completion: nil)
        }
}