Question

我现在已经找了一天这些错误的解决方案，我不知道如何解决它们。下面的代码收到多条错误消息：

使用未解析的标识符NSCalendarUnitDay

在线：

localNotification.repeatInterval = NSCalendarUnitDay

还有三个错误：

预期＆＃39;，＆＃39;分隔符

使用未解析的标识符＆＃39; sharedApplication＆＃39;

使用未解析的标识符＆applicationBadgeNumber＆＃39;

在线：

localNotification.applicationIconBadgeNumber = [[UIApplication sharedApplication] applicationIconBadgeNumber] + 1;

这是整个代码：

override func viewDidLoad() {
    super.viewDidLoad()


    var localNotification:UILocalNotification = UILocalNotification()
    localNotification.fireDate = datePicker.date
    localNotification.alertBody = nil;
    localNotification.alertAction = nil;
    localNotification.repeatInterval = NSCalendarUnitDay

    //Add one to the icon badge number

    localNotification.applicationIconBadgeNumber = [[UIApplication sharedApplication] applicationIconBadgeNumber] + 1;


    UIApplication.sharedApplication().scheduleLocalNotification(localNotification)

Answer 1

这是非常基本的。您可以将代码更改为：

override func viewDidLoad() {
    super.viewDidLoad()

    var localNotification:UILocalNotification = UILocalNotification()
    localNotification.fireDate = datePicker.date
    localNotification.alertBody = nil;
    localNotification.alertAction = nil;
    localNotification.repeatInterval = NSCalendarUnit.Day

    //Add one to the icon badge number

    localNotification.applicationIconBadgeNumber = UIApplication.sharedApplication().applicationIconBadgeNumber + 1;


    UIApplication.sharedApplication().scheduleLocalNotification(localNotification)

}

Answer 2

这是因为您尝试在Swift中执行Objective-C代码。

只需用

替换该行

localNotification.applicationIconBadgeNumber = UIApplication.sharedApplication().applicationIconBadgeNumber + 1

当您看到类似此[ClassName classMethod]或此*variable或类似内容的内容时，它就是Objective-C。 []表示您向对象发送消息。在Swift中，您只需使用()调用方法：ClassName.classMethod()

期待＆＃39;，＆＃39;分隔符和未解析的标识符

2 个答案: