我正在尝试发布本地通知，以便在收到远程通知时更改标签栏项目上的徽章编号。如果在应用程序打开时收到通知，则下面的其他声明会完全触发。但是，如果应用程序在后台，我的前两个if语句似乎永远不会触发？
AppDelegate.m
- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo fetchCompletionHandler:(void (^)(UIBackgroundFetchResult))completionHandler
{
if(application.applicationState == UIApplicationStateInactive) {
[[NSNotificationCenter defaultCenter] postNotificationName:@"pushNotification" object:nil userInfo:userInfo];
NSLog(@"Inactive - the user has tapped in the notification when app was closed or in background");
completionHandler(UIBackgroundFetchResultNewData);
}
else if (application.applicationState == UIApplicationStateBackground) {
[[NSNotificationCenter defaultCenter] postNotificationName:@"pushNotification" object:nil userInfo:userInfo];
NSLog(@"application Background - notification has arrived when app was in background");
NSString* contentAvailable = [NSString stringWithFormat:@"%@", [[userInfo valueForKey:@"aps"] valueForKey:@"content-available"]];
if([contentAvailable isEqualToString:@"1"]) {
NSLog(@"content-available is equal to 1");
completionHandler(UIBackgroundFetchResultNewData);
}
}
else {
[[NSNotificationCenter defaultCenter] postNotificationName:@"pushNotification" object:nil userInfo:userInfo];
NSLog(@"application Active - notication has arrived while app was opened");
completionHandler(UIBackgroundFetchResultNewData);
}
}
或：我也尝试过以下代码，同样的问题......
-(void)application:(UIApplication *)application
didReceiveRemoteNotification:(NSDictionary *)userInfo {
UIApplicationState state = [application applicationState];
if (state == UIApplicationStateActive) {
[[NSNotificationCenter defaultCenter] postNotificationName:@"pushNotification" object:nil userInfo:userInfo];
NSLog(@"App notification received!");
// do stuff when app is active
}else{
static int i=1;
[UIApplication sharedApplication].applicationIconBadgeNumber = i++;
NSLog(@"App notification received background!");
}
}
FIX（对于那些使用Drupal的人）：将以下内容添加到push_notifications.admin.inc（Drupal推送通知文件）**
$payload['content-available'] = 1;