Question

我已经为本地通知构建了一个测试应用程序。看起来像这样

UILocalNotification* localNotification = [[UILocalNotification alloc] init];
    localNotification.fireDate = [NSDate dateWithTimeIntervalSinceNow:10];
    localNotification.alertBody = @"My Next Custom Notification";
    localNotification.timeZone = [NSTimeZone defaultTimeZone];
    [[UIApplication sharedApplication] scheduleLocalNotification:localNotification];
    localNotification.applicationIconBadgeNumber = [[UIApplication sharedApplication] applicationIconBadgeNumber] + 1;

    localNotification.fireDate = [NSDate dateWithTimeIntervalSinceNow:15];
    localNotification.alertBody = @"Second One Now";
    localNotification.timeZone = [NSTimeZone defaultTimeZone];
    [[UIApplication sharedApplication] scheduleLocalNotification:localNotification];
    localNotification.applicationIconBadgeNumber = [[UIApplication sharedApplication] applicationIconBadgeNumber] + 1;

    NSLog(@"Notifications: %@", [[UIApplication sharedApplication] scheduledLocalNotifications]);

我的AppDelegate：

- (void)applicationWillEnterForeground:(UIApplication *)application
{
    // Called as part of the transition from the background to the inactive state; here you can undo many of the changes made on entering the background.

    [[UIApplication sharedApplication] setApplicationIconBadgeNumber:0];
    NSLog(@"%s", __PRETTY_FUNCTION__);
}

当我在后台或LockScreen中收到此通知时，它可以正常工作。但是当第一个通知进来时，它并没有显示应该是＆＃34; 1＆＃34;现在。 Wehen第二个通知出现在徽章显示＆＃34; 1＆＃34;而不是＆＃34; 2＆＃34;（现在是正确的数字）。所以我的代码有什么问题。任何建议都很明显......

Answer 1

您正在制定一个简单的错误，即您首先安排通知而不是设置其徽章编号。因此，您应首先设置通知徽章编号，然后安排它。

UILocalNotification* localNotification = [[UILocalNotification alloc] init];
    localNotification.fireDate = [NSDate dateWithTimeIntervalSinceNow:10];
    localNotification.alertBody = @"My Next Custom Notification";
    localNotification.timeZone = [NSTimeZone defaultTimeZone];
    localNotification.applicationIconBadgeNumber = [[UIApplication sharedApplication] applicationIconBadgeNumber] + 1;
    [[UIApplication sharedApplication] scheduleLocalNotification:localNotification];

    localNotification.fireDate = [NSDate dateWithTimeIntervalSinceNow:15];
    localNotification.alertBody = @"Second One Now";
    localNotification.timeZone = [NSTimeZone defaultTimeZone];
    localNotification.applicationIconBadgeNumber = localNotification.applicationIconBadgeNumber + 1;
    [[UIApplication sharedApplication] scheduleLocalNotification:localNotification];
NSLog(@"Notifications: %@", [[UIApplication sharedApplication] scheduledLocalNotifications]);

同样，对于第二次通知期间的右侧徽章编号，您应该保存通知徽章编号，或者像上面的代码中那样在上一个通知徽章中设置。因为在您的代码中，它只是从当前的[UIApplication sharedApplication]徽章设置徽章编号，每次0 + 1等于1。

Answer 2

UILocalNotification* localNotification = [[UILocalNotification alloc] init];
    localNotification.fireDate = [NSDate dateWithTimeIntervalSinceNow:10];
    localNotification.alertBody = @"My Next Custom Notification";
    localNotification.timeZone = [NSTimeZone defaultTimeZone];
    [[UIApplication sharedApplication] scheduleLocalNotification:localNotification];
    localNotification.applicationIconBadgeNumber =  1; //first notification 

    localNotification.fireDate = [NSDate dateWithTimeIntervalSinceNow:15];
    localNotification.alertBody = @"Second One Now";
    localNotification.timeZone = [NSTimeZone defaultTimeZone];
    [[UIApplication sharedApplication] scheduleLocalNotification:localNotification];
    localNotification.applicationIconBadgeNumber = 2; // second notification 

    NSLog(@"Notifications: %@", [[UIApplication sharedApplication] scheduledLocalNotifications]);

添加条件检查后，首先是火，然后是cancelallnotification并注册剩余的徽章顺序递减。

LocalNotification徽章在iOS7中显示错误的数字

2 个答案: