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在Xcode 8和Swift 3上出现错误+我尝试过任何事情,但没有得到任何结果。 下面的代码:没有'+'候选产生预期的上下文结果类型'NSNumber?' Swift 3
static func addNotificationInterval(title: String, body: String,
indentifier: String, interval: Double) {
let content = UNMutableNotificationContent()
content.title = NSString.localizedUserNotificationString(forKey: title, arguments: nil)
content.body = NSString.localizedUserNotificationString(forKey: body, arguments: nil)
content.sound = UNNotificationSound.default()
content.badge = UIApplication.shared.applicationIconBadgeNumber + 1; content.categoryIdentifier = "com.elonchan.localNotification"
let trigger = UNTimeIntervalNotificationTrigger.init(timeInterval: interval, repeats: true)
let request = UNNotificationRequest.init(identifier: indentifier, content: content, trigger: trigger)
let center = UNUserNotificationCenter.current()
center.add(request)
print("SetNotifiInterval")
}
错误来这里由+:
content.badge = UIApplication.shared.applicationIconBadgeNumber + 1; content.categoryIdentifier = "com.elonchan.localNotification"
错误类型: '?NSNumber的'
没有 '+' 候选人产生预期的语境结果类型
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