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[间接解决]swift中想要判断当前是否在发送短信的视图中

iOS crifan 688浏览 0评论

代码中:

    func sendMessage(sender:UIButton){
        if self.customerItem.phone.isNotEmpty {
            //首先要判断设备具不具备发送短信功能
            if MFMessageComposeViewController.canSendText(){
                let controller = MFMessageComposeViewController()
                //设置短信内容
                controller.body = self.messageContentCell.textview.text
                //设置收件人列表
                controller.recipients = [“\(self.customerItem.phone)”]
                //设置代理
                controller.messageComposeDelegate = self
                //打开界面
                self.presentViewController(controller, animated: true, completion: nil)
            } else {
                self.errorNotice(“本设备不能发送短信”)
            }
        } else {
            self.errorNotice(“确定客户手机号码”)
        }
    }

和:

        if let currentVc = UIApplication.topViewController() {
            gLog.verbose(“currentVc=\(currentVc), currentVc.presentedViewController=\(currentVc.presentedViewController)”)
            //currentVc=<Sales_App.CustomerViewController: 0x7bbb3000>
            //currentVc=<Sales_App.HomeViewController: 0x7d0d3590>, currentVc.presentedViewController=nil
            let verifyGesturePwdVC = GesturePasswordViewController(curMode: .VerifyGesture, drawStatusNaviView: true, callerVc: currentVc)
            currentVc.modelPresentViewController(verifyGesturePwdVC, animated: false)
        } else {
            gLog.error(“can not find top view controller, can not show authority verify”)
        }

调试期间,想要判断currentVc是不是发送短信的界面viewcontroller

发现此时的currentVc是CKSMSComposeController类型的,但是去判断,结果却又出错:

(lldb) po currentVc
<CKSMSComposeController: 0x1268697e0>
(lldb) po currentVc is CKSMSComposeController
error: <EXPR>:2:14: error: use of undeclared type ‘CKSMSComposeController’
currentVc is CKSMSComposeController
             ^~~~~~~~~~~~~~~~~~~~~~
(lldb) po currentVc is MFMessageComposeViewController
error: <EXPR>:2:14: error: use of undeclared type ‘MFMessageComposeViewController’
currentVc is MFMessageComposeViewController
             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

所以:想要搞清楚,如何判断当前的视图是发送短信的视图?

搜:

CKSMSComposeController

objective c – iOS – Check if MFMessageComposeViewController is currently visible – Stack Overflow

whether is MFMessageComposeViewController

check MFMessageComposeViewController

后来实在没办法,只能去:

在使用到MFMessageComposeViewController的vc:

SendMessageViewController.swift

中,创建对应的变量:

class SendMessageViewController: UIViewController, UITableViewDelegate, UITableViewDataSource, UITextViewDelegate, UIGestureRecognizerDelegate, MFMessageComposeViewControllerDelegate {
    var messageComposeVc:MFMessageComposeViewController
    init(customerItem:CustomerItem){
        self.messageComposeVc = MFMessageComposeViewController()
}
                self.messageComposeVc = MFMessageComposeViewController()
                //设置短信内容
                messageComposeVc.body = self.messageContentCell.textview.text
                //设置收件人列表
                messageComposeVc.recipients = [“\(self.customerItem.phone)”]
                //设置代理
                messageComposeVc.messageComposeDelegate = self
                //打开界面
                self.presentViewController(messageComposeVc, animated: true, completion: nil)

然后在别处调用的时候,判断是非是对应的vc,如果是,主动调用该变量的dimiss去消失掉:

    func needDismissSpecialViewController(completion:((Void) -> Void)? = nil) -> Bool {
        var need = false
        if let topVcInStack = UIApplication.topViewControllerInStack {
            if topVcInStack is SendMessageViewController {
                let sendMsgVc = topVcInStack as! SendMessageViewController
                gLog.verbose(“before dismiss special view controller \(sendMsgVc)”)
                need = true
                //dismiss special view controller
                sendMsgVc.messageComposeVc.dismissViewControllerAnimated(false, completion: {
                    gLog.verbose(“after  dismiss special view controller \(sendMsgVc)”)
                    if completion != nil {
                        completion!()
                    }
                })
            }
        }
        return need
    }
        if needDismissSpecialViewController(showVerifyGestureVC) {
            gLog.verbose(“will dismiss special view controller”)
        } else {
            showVerifyGestureVC()
        }

[总结]

最终还是没办法直接判断,当前正在显示的页面是否是MFMessageComposeViewController

转载请注明:在路上 » [间接解决]swift中想要判断当前是否在发送短信的视图中

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