当我发送推送通知,我的应用程序是开放的或在后台,我点击推送通知,我的应用程序重定向到PushMessagesVc viewController(如预期)
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];
}
在上面的代码/场景中没有问题,但如果应用程序关闭,并且我点击推送通知,应用程序不会重定向我的PushMessagesVc viewController在这种情况&应用程序停留在主屏幕上.
对于第二种情况,我使用以下代码：
- (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.
解决方法
由于您只希望在收到推送通知时提供viewController,您可以尝试使用NSNotificationCenter来实现：
第1部分：设置一个类(在你的情况下,rootViewController)来监听/响应NSNotification
假设MainMenuViewController是您的navigationController的rootViewController.
设置这个类来听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];
}
在您的情况下,AppDelegate.m方法应如下所示：
- (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];
}
PS：我还没有为我的项目做这件事,但它的工作,是我可以想到这样做的最好的方式(暂时)
