我有一个obj c类,快速文件。这是我的代码:
#if (CC_TARGET_PLATFORM == CC_PLATFORM_IOS)
#include "InterfaceManagerInstance.h"
void IOSInterfaceManager::testMethod() {}
void IOSInterfaceManager::initialize(){
}
std::string IOSInterfaceManager::getColorPrimary(){
return "";
}
void IOSInterfaceManager::onOver(int nameID,int fameid, int nickNameID){
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(5 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
[[NSNotificationCenter defaultCenter] postNotificationName:@"openBoard" object:nil userInfo:userInfo];
NSLog(@"Finished!");
});
}
userInfo:userInfo
是我的NSDictionary。
.h文件代码:
class IOSInterfaceManager : public InterfaceManager
{
public:
void onOver(int nameID,int fameid, int nickNameID);
};
现在在我的快速文件中:
override func viewDidLoad() {
super.viewDidLoad()
NotificationCenter.default.addObserver(self, selector: #selector(self.openBoard(notification:)), name: Notification.Name("openBoard"), object: nil)
}
@objc func openBoard(notification: Notification) {
}
现在在我的obj c类NSLog(@"Finished!");
中,这正在我的控制台中打印。但是openBoard
没有打印。不知道这是什么问题。任何帮助都会有用。
谢谢!
更新:
当我在NSNotificationCenter
中添加断点时,我收到此警告:
警告:无法执行支持代码来读取Objective-C类数据 进行中。这可能会降低类型信息的质量 可用。
答案 0 :(得分:0)
查看示例项目,主要问题是您从不实例化 Swift ViewController
类。因此,NotificationCenter.default.addObserver
代码永远不会运行,并且该对象也不存在以获取通知。
在您的testLogin.m
类中,您需要创建一个ViewController
属性,并实例化该类。将其设置为属性而不是局部变量,这样它就不会超出范围。
您还需要对Swift类进行一些更改。大概您打算将其加载为UIViewController
,因此您可以可以将.addObserver
行留在viewDidLoad()
中,但是...如果尚未做任何事情来实际加载视图,也不会被调用。最好实施init
方法并在那里做。
在您的示例项目中,将ViewController.swift
替换为:
//
// ViewController.swift
// notificationCenter
//
// Created by SATHISH on 3/1/19.
// Copyright © 2019 sathish. All rights reserved.
//
import UIKit
@objc class ViewController: UIViewController {
override init(nibName nibNameOrNil: String?, bundle nibBundleOrNil: Bundle?) {
super.init(nibName: nibNameOrNil, bundle: nibBundleOrNil)
print("Swift ViewController class init(nibName nibNameOrNil: String?, bundle nibBundleOrNil: Bundle?) was called.")
setupNotif()
}
required init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
print("Swift ViewController class init?(coder aDecoder) was called.")
setupNotif()
}
init() {
super.init(nibName: nil, bundle: nil)
print("Swift ViewController class init() was called.")
setupNotif()
}
func setupNotif() -> Void {
NotificationCenter.default.addObserver(self, selector: #selector(self.openScoreBoard(notification:)), name: Notification.Name("openScoreBoard"), object: nil)
}
@objc func openScoreBoard(notification: Notification) {
print("Swift openScoreBoard(notification: Notification) was triggered!")
}
}
并用以下代码替换testLogin.m:
//
// testLogin.m
// notificationCenter
//
// Created by SATHISH on 3/1/19.
// Copyright © 2019 sathish. All rights reserved.
//
#import "testLogin.h"
#import "notificationCenter-Swift.h"
@interface testLogin ()
@property (strong, nonatomic) ViewController *swiftVC;
@end
@implementation testLogin
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view.
// instantiate an instance of the Swift ViewController
_swiftVC = [ViewController new];
}
- (IBAction)clickedAction:(id)sender {
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(5 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
NSDictionary* userInfo = @{@"gameScore": @"123", @"gameID": @"123", @"gameSkillID": @"123"};
[[NSNotificationCenter defaultCenter] postNotificationName:@"openScoreBoard" object:nil userInfo:userInfo];
NSLog(@"Finished!");
});
}
@end
只有几处更改-如果将原始内容与这些内容进行比较,差异会很明显。