避免在收到推送通知iOS时加载主ViewController

Question

I am using this below code on receive of push notification to show my viewcontroller . It is working fine but it first load the main viewcontroller and then notification viewcontroller . So every time user gets notification they see two viewcontrollers loading first the main and then notification controller .

How can i avoid this? From UI perspective it does not look good to load two view controllers.

UIViewController *main=[[UIStoryboard storyboardWithName:@"Main" bundle:nil]  instantiateViewControllerWithIdentifier:@"main"];            
UINavigationController *navigationController=[[UINavigationController alloc] initWithRootViewController:main];
self.window.rootViewController =nil;
UIViewController *destCon = [[UIStoryboard storyboardWithName:@"Main" bundle:nil] instantiateViewControllerWithIdentifier:@"RelNoti"];
UINavigationController *desNevCont = [[UINavigationController alloc] initWithRootViewController:destCon];                       
self.window.rootViewController = navigationController;
[self.window makeKeyAndVisible];
[self.window.rootViewController  presentViewController:desNevCont animated:YES completion:nil];

Answer 1

在这行中将动画设置为“否”，

[self.window.rootViewController  presentViewController:desNevCont animated:NO completion:nil];

Answer 2

You can simply change the rootViewController of your app at the time of detecting push notification like below and avoid the transition between views:

UIViewController *destCon = [[UIStoryboard storyboardWithName:@"Main" bundle:nil] instantiateViewControllerWithIdentifier:@"RelNoti"];
UINavigationController *desNevCont = [[UINavigationController alloc] initWithRootViewController:destCon];


self.window.rootViewController = desNevCont;
[self.window makeKeyAndVisible];

From your below code, it seems that you are assigning mainViewController as your rootViewController and then presenting the notificationViewController above it, which is what is creating transition of two views. So, simply limit your code with the above code.

self.window.rootViewController = navigationController; // You are doing it here
[self.window makeKeyAndVisible];
[self.window.rootViewController  presentViewController:desNevCont animated:YES completion:nil]; // presenting here