推送通知 -didFinishLaunchingWithOptions [英] Push Notification -didFinishLaunchingWithOptions
问题描述
当我发送推送通知并且我的应用程序打开或在后台并单击推送通知时,我的应用程序重定向到 PushMessagesVc
viewController
(如预期)
When I send a push notification and my app is open or in the background and I click on the push notification, my application redirects to PushMessagesVc
viewController
(as intended)
我使用如下代码:
-(void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo {
UIStoryboard *mainstoryboard = [UIStoryboard storyboardWithName:@"MainStoryboard" bundle:nil];
PushMessagesVc *pvc = [mainstoryboard instantiateViewControllerWithIdentifier:@"PushMessagesVc"];
[self.window.rootViewController presentViewController:pvc
animated:YES
completion:NULL];
}
上面的代码/场景没有问题,但是如果应用程序关闭并且我点击推送通知,应用程序不会重定向我的 PushMessagesVc
viewController
这个案例&应用程序停留在主屏幕上.
There is no problem in the code/scenario above but if the application is closed and I click on a push notification, the application does not redirect my PushMessagesVc
viewController
in this case & the application stays on the main screen.
对于第二个场景,我使用以下代码:
For the 2nd scenario, I use the following code:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
sleep(1);
[[UIApplication sharedApplication] registerForRemoteNotificationTypes:(UIRemoteNotificationTypeAlert | UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeNone)];
[UIApplication sharedApplication].applicationIconBadgeNumber = 1;
NSDictionary *userInfo = [launchOptions valueForKey:@"UIApplicationLaunchOptionsRemoteNotificationKey"];
NSDictionary *apsInfo = [userInfo objectForKey:@"aps"];
if(apsInfo) {
UIStoryboard *mainstoryboard = [UIStoryboard storyboardWithName:@"MainStoryboard" bundle:nil];
PushMessagesVc* pvc = [mainstoryboard instantiateViewControllerWithIdentifier:@"PushMessagesVc"];
[self.window.rootViewController presentViewController:pvc animated:YES completion:NULL];
return YES;
}
return YES;
}
但在这种情况下,PushMessagesVc
不会出现.
But in this case, the PushMessagesVc
does not appear.
推荐答案
由于您只想在收到推送通知时呈现一个 viewController
,您可以尝试使用 NSNotificationCenter
> 为您的目的:
Since you only want to present a viewController
when you get a Push Notification, you may try utilizing NSNotificationCenter
for your purposes:
假设,MainMenuViewController
是 navigationController
的 rootViewController
.
设置这个类来监听NSNotification
:
- (void)viewDidLoad {
//...
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(presentMyViewOnPushNotification)
name:@"HAS_PUSH_NOTIFICATION"
object:nil];
}
-(void)presentMyViewOnPushNotification {
//The following code is no longer in AppDelegate
//it should be in the rootViewController class (or wherever you want)
UIStoryboard *mainstoryboard = [UIStoryboard storyboardWithName:@"MainStoryboard" bundle:nil];
PushMessagesVc *pvc = [mainstoryboard instantiateViewControllerWithIdentifier:@"PushMessagesVc"];
[self presentViewController:pvc animated:YES completion:nil];
//either presentViewController (above) or pushViewController (below)
//[self.navigationController pushViewController:pvc animated:YES];
}
<小时>
第 2 部分:发布通知(可以在代码中的任何位置)
在您的情况下,AppDelegate.m 方法应该看起来像:
Part 2: Post Notification (possible from anywhere in your code)
In your case, AppDelegate.m methods should look like:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
//firstly, don't sleep the thread, it's pointless
//sleep(1); //remove this line
if (launchOptions) { //launchOptions is not nil
NSDictionary *userInfo = [launchOptions valueForKey:UIApplicationLaunchOptionsRemoteNotificationKey];
NSDictionary *apsInfo = [userInfo objectForKey:@"aps"];
if (apsInfo) { //apsInfo is not nil
[self performSelector:@selector(postNotificationToPresentPushMessagesVC)
withObject:nil
afterDelay:1];
}
}
return YES;
}
-(void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo {
//this method can be done using the notification as well
[self postNotificationToPresentPushMessagesVC];
}
-(void)postNotificationToPresentPushMessagesVC {
[[NSNotificationCenter defaultCenter] postNotificationName:@"HAS_PUSH_NOTIFICATION" object:nil];
}
<小时>
PS:我还没有为我的项目做过这个(还),但它确实有效,而且是我能想到的最好的方式来做这种事情(目前>)
PS: I haven't done this for my projects (yet) but it works and is the best way i could think of doing this kinda stuff (for the moment)
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