我一直在为iOS 10中的应用程序设置本地通知,但是在模拟器中进行测试时,我发现通知会成功安排,但在计划安排的时间内实际上不会出现 . 这是我一直在使用的代码:
let UNcenter = UNUserNotificationCenter.current()
UNcenter.requestAuthorization(options: [.alert, .badge, .sound]) { (granted, error) in
// Enable or disable features based on authorization
if granted == true {
self.testNotification()
}
}
然后它运行此代码(假设日期/时间是将来):
func testNotification () {
let date = NSDateComponents()
date.hour = 16
date.minute = 06
date.second = 00
date.day = 26
date.month = 1
date.year = 2017
let trigger = UNCalendarNotificationTrigger(dateMatching: date as DateComponents, repeats: false)
let content = UNMutableNotificationContent()
content.title = "TestTitle"
content.body = "TestBody"
content.subtitle = "TestSubtitle"
let request = UNNotificationRequest(identifier: "TestID", content: content, trigger: trigger)
UNUserNotificationCenter.current().add(request) {(error) in
if let error = error {
print("error: \(error)")
} else {
print("Scheduled Notification")
}
}
}
从这段代码开始,它将始终打印“Scheduled Notification”,但是当通知被触发时,它永远不会触发 . 我一直无法找到任何解决方法 .
1 回答
这是几个步骤 .
确保您拥有 permission . 如果没有,请使用UNUserNotificationCenter.current() . requestAuthorization来获取它 . 如果您想多次弹出请求,请按照答案操作 .
如果要显示通知 foreground ,必须将UNUserNotificationCenterDelegate分配给某处 .
这个answer可能有所帮助 .