在 ipad 与 iphone 上传递本地通知问题

Posted 2023-02-24

【中文标题】在 ipad 与 iphone 上传递本地通知问题

【英文标题】：local notifications issue delivering on ipad vs iphone

【发布时间】：2015-06-15 02:22:10

【问题描述】：

我的应用程序的本地通知有问题。当我测试我的应用程序的通知时，在 iphone 上它每天触发一次，但在 ipad 上每天触发 5 次。这是我的代码：

NSDateComponents *comp = [[NSCalendar currentCalendar] components:NSCalendarUnitDay | NSCalendarUnitMonth | NSCalendarUnitYear | NSCalendarUnitHour | NSCalendarUnitMinute | NSCalendarUnitSecond fromDate:[NSDate date]];

NSInteger day = [comp day];
NSInteger month = [comp month];
NSInteger year = [comp year];
NSInteger hour = [comp hour];
NSInteger min = [comp minute];
NSInteger sec = [comp second];

NSCalendar *calendar = [NSCalendar currentCalendar];
NSDateComponents *components = [[NSDateComponents alloc] init];
[components setDay: day];
[components setMonth: month];
[components setYear: year];
[components setHour: hour];
[components setMinute: min];
[components setSecond: sec];
[calendar setTimeZone: [NSTimeZone defaultTimeZone]];
NSDate *dateToFire = [calendar dateFromComponents:components];

// Schedule the notification
UILocalNotification* localNotification = [[UILocalNotification alloc] init];
localNotification.fireDate = dateToFire;
int i = arc4random() % 2;
if (i == 1) 
    localNotification.alertBody = @"Collect your FREE coins!";
 else 
    localNotification.alertBody = @"It's time to win";

localNotification.alertAction = @"View";
localNotification.timeZone = [NSTimeZone defaultTimeZone];
[localNotification setRepeatInterval: kCFCalendarUnitDay];
localNotification.applicationIconBadgeNumber = [[UIApplication sharedApplication] applicationIconBadgeNumber] + 1;

[[UIApplication sharedApplication] scheduleLocalNotification:localNotification];
NSLog(@"local notif = %@", localNotification);

我在这段代码中的错误是什么？为什么它似乎在 iPhone 上正确发出通知，但在 iPad 上却没有？

【参考方案1】：

如果您的 iPad OS 版本 > 8.0，那么您必须获得用户的许可。在“didFinishLaunchingWithOptions”（AppDelegate.m）中编写以下代码

if ([UIApplication instancesRespondToSelector:@selector(registerUserNotificationSettings:)])
    [application registerUserNotificationSettings:[UIUserNotificationSettings settingsForTypes:UIUserNotificationTypeAlert|UIUserNotificationTypeBadge|UIUserNotificationTypeSound categories:nil]];