In my app delegate I am pushing the user to a view controller if the user details are saved
AppDelegate.m
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
// cached user
PFUser *currentUser = [PFUser currentUser];
if (currentUser)
{
NSLog(#"current user signing and looking for VC %#", currentUser);
// A user was cached, so skip straight to the main view
UINavigationController *navigationController = (UINavigationController *)self.window.rootViewController;
TaskSelectionViewController*viewController = [[TaskSelectionViewController alloc] initWithUser:currentUser];
[navigationController pushViewController:viewController animated:YES];
NSLog(#"VC found");
} else {
NSLog(#"VC not found");
}
TaskSelectionViewController.m
-(id)initWithUser:(PFUser *)currentUser
{
NSLog(#"current user %#", currentUser);
NSLog(#"task Selection initwithuser");
return self;
}
The push is working but all I get is the NavigationController bar at the top and a black Screen.
what is missing ??
thanks for your help.
OK done using instantiateViewControllerWithIdentifier:#"ID"
UINavigationController *navigationController = (UINavigationController *)self.window.rootViewController;
UIStoryboard *mainStoryboard = [UIStoryboard storyboardWithName:#"MainStoryboard" bundle: nil];
TaskSelectionViewController *controller = (TaskSelectionViewController*)[mainStoryboard instantiateViewControllerWithIdentifier: #"task"];
[navigationController pushViewController:controller animated:YES];
In the -(id)initWithUser:(PFUser *)currentUser of TaskSelectionViewController you should call [super init] or something similar to have your ViewController initialized properly. This solved a similar problem for me at least.
Look at Apple's examples for reference implementations of initialization methods of view controllers.
Related
I have a UINavigationController in my storyboard and two viewControllers which perform the following function:
InitialViewController: this would be the application's home screen.
FirstTimeViewController: is the screen that appears when the user open
the app for the first time.
My UINavigationController has a class that have the following code:
- (void)viewDidLoad {
[super viewDidLoad];
if ([[ReadPlist initWithPlist:#"Configuration.plist" key:#"initialConfiguration"] boolValue]){
FirstTimeViewController *firstTimeController = [[UIStoryboard storyboardWithName:#"Main" bundle:nil] instantiateViewControllerWithIdentifier:#"firstTimeView"]; //or the homeController
[self.navigationController pushViewController:firstTimeController animated:NO];
}else{
InitialViewController *initialController = [[UIStoryboard storyboardWithName:#"Main" bundle:nil] instantiateViewControllerWithIdentifier:#"initialView"]; //or the homeController
[self.navigationController pushViewController:initialController animated:NO];
}
}
Basically this code verify the .plist file if a particular field is active, if YES means that the application is running for the first time, in this case it calls the corresponding viewController.
But this code is not working and I see a NavigationController with a black view. All I would do is the same thing we do in the interface builder, simply drag a line from the UINavigationController inside a UIViewController and set as "Root View Controller", but in my case I'm trying to do this programmatically.
How I can do this?
When you push to FirstTimeViewController Set Bool (User Default) in controller ViewDidload Or in your Success Code.then after set in your AppDelegate below code.
if(Bool value = Yes)
{
FirstTimeViewController *FS=[[UIStoryboard storyboardWithName:#"Main" bundle:nil] instantiateViewControllerWithIdentifier:#"FirstTimeViewController"];
UINavigationController *navController=[[UINavigationController alloc]initWithRootViewController:FS];
[navController setNavigationBarHidden:YES];
self.window.rootViewController=navController;
self.window.backgroundColor = [UIColor whiteColor];
[self.window makeKeyAndVisible];
}
My answer is
- (BOOL)application:(UIApplication *)app didFinishLaunchingWithOptions:(NSDictionary *)options
{
UINavigationController *navController = (UINavigationController *)self.window.rootViewController;
FirstTimeViewController *firstTimeVC = [navController.storyboard instantiateViewControllerWithIdentifier:#" FirstTimeViewController"];
InitialViewController *initialVC = [navController.storyboard instantiateViewControllerWithIdentifier:#" InitialViewController"];
if ([[ReadPlist initWithPlist:#"Configuration.plist" key:#"initialConfiguration"] boolValue])
{
// FirstTime
navController.viewControllers = [NSArray arrayWithObject:firstTimeVC];
}
else
{
// Initial
navController.viewControllers = [NSArray arrayWithObject:initialVC];
}
[self.window makeKeyAndVisible];
return YES;
}
This is the code I have got for trying to open a view controller from a storyboard. I am getting error "expected identifier" on
UINavigationController controller = [(UINavigationController)[[mainStoryboard instantiateViewControllerWithIdentifier: #"ARViewController"];
Can someone please help.
- (void)application:(UIApplication *)application performActionForShortcutItem:(UIApplicationShortcutItem *)shortcutItem completionHandler:(void (^)(BOOL))completionHandler {
NSLog(#"%#", shortcutItem.type);
if ([shortcutItem.type isEqualToString:#"ADD OWN STRING HERE"]) {
UINavigationController *navigationController = (UINavigationController *)self.window.rootViewController;
UIStoryboard *mainStoryboard = [UIStoryboard storyboardWithName:#"Main" bundle: nil];
UINavigationController *controller = [(UINavigationController*)[[mainStoryboard instantiateViewControllerWithIdentifier: #"ARViewController"]];
[navigationController pushViewController:controller animated:YES];
}
}
#end
The amount and locations of your [ and ] didn't match (two [ too many, one ] too many). It should be:
UINavigationController *controller = (UINavigationController*)[mainStoryboard instantiateViewControllerWithIdentifier: #"ARViewController"];
I am using SWRevealViewController in my project, and I want to open a particular controller when the app receives a notification. I have tried so many solutions but nothing works.
I follow this http://www.appcoda.com/ios-programming-sidebar-navigation-menu/ by using storyboard. My storyboard is designed as below:
When the application receives a notification I want to load Photo view controller within its navigation controller. I tried with the following code in the AppDelegate:
UIStoryboard *st = [UIStoryboard storyboardWithName:#"Main" bundle: nil];
photoViewController *descController = (PhotoViewController*)[st instantiateViewControllerWithIdentifier: #"photoView"];
UINavigationController *frontNavigationController = [[UINavigationController alloc] initWithRootViewController:descController];
SidebarTableViewController *rearViewController = (SidebarTableViewController*)[st instantiateViewControllerWithIdentifier: #"menuController"];
SWRevealViewController *mainRevealController = [[SWRevealViewController alloc] init];
mainRevealController.rearViewController = rearViewController;
mainRevealController.frontViewController= frontNavigationController;
self.window.rootViewController =nil;
self.window.rootViewController = mainRevealController;
[self.window makeKeyAndVisible];
This works, but creates a new Navigtion controller, and what I need is to use the one already defined in the storyboard, since it has specific properties.
Any idea?
Thanks
actually SwLRevalViewController Taken the ownership of Root, so do like this
in Appdelegate.m
//initially navigate to your Main controller on SWL
- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo fetchCompletionHandler:(void (^)(UIBackgroundFetchResult result))completionHandler
{
NSString *alert = userInfo[#"aps"][#"redirect_url"];
[[NSUserDefaults standardUserDefaults]setObject:alert forKey:#"itemType"];
[[NSUserDefaults standardUserDefaults]synchronize];
UIStoryboard *mainStoryboard = [UIStoryboard storyboardWithName:#"Main" bundle: nil];
SWRevealViewController *main = (SWRevealViewController *)[mainStoryboard instantiateViewControllerWithIdentifier:#"SWRevealViewController"];
self.window.rootViewController = main;
}
//it automatically redirect to your root controller
on that main view controller ViewDidLoad check / Navigate to your photo view controller
NSString *getType=[[NSUserDefaults standardUserDefaults]objectForKey:#"itemType"];
if ([gettypeofItem isEqualToString:#"something"])
{
yourPhotoViewController *ivc=[self.storyboard instantiateViewControllerWithIdentifier:#"yourPhotoViewController"];
[self.navigationController pushViewController:ivc animated:YES];
}
else
{
// do nothing
}
You can use following method
NSString *storyBoardName=#"Main_iPad";
if (isPhone)
storyBoardName=#"Main_iPhone";
UIStoryboard *storyBoard=[UIStoryboard storyboardWithName:storyBoardName bundle:nil];
PlayVideoBySocketsScene *controller=[storyBoard instantiateViewControllerWithIdentifier:#"playVideoUsingSockets"];
float disptachTime=2.0;
if (value)
{
disptachTime=1.0;
}
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(disptachTime * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
[[[[UIApplication sharedApplication] keyWindow] rootViewController] presentViewController:controller animated:YES completion:nil];
please try this it may help you. in this when you click on notification this method us called first insted for appdelegate
-(void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo
{
UINavigationController *navController = (UINavigationController *)self.window.rootViewController;
NotificationViewController *notificationViewController = [[NotificationViewController alloc] init];
[navController.visibleViewController.navigationController pushViewController:notificationViewController];
}
I am making an app. In which First User have to sign In then He allowed to use the app.
After successful login I want the user to directly switch to my HomeViewController.
Here is my code tho change navigation root view but it is not working
TermsConditionsController *firstViewController = [[TermsConditionsController alloc]init];
FirstPage *secondViewController = [[FirstPage alloc]init];
firstViewController.navigationController.viewControllers = [NSArray arrayWithObject: secondViewController];
FirstPage *nextScr = (FirstPage *) [self.storyboard instantiateViewControllerWithIdentifier:#"FirstPage"];
[self.navigationController pushViewController:nextScr animated:YES];
Connect your LoginViewController with HomeViewController by using segue.
give the identifier for the segue for ex name:successLogin.
and use this method:
[self performSegueIdentifier:#"successLogin" sender:nil];
Try this code
Note: Change controller name as per your controllers
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
UINavigationController *navController;
if ([[NSUserDefaults standardUserDefaults] objectForKey:#"loginUserDetails"]) {
// Already logged in
ProfileViewController *profileVC = [[UIStoryboard storyboardWithName:#"Main" bundle:nil] instantiateViewControllerWithIdentifier:#"ProfileVC"];
navController = [[UINavigationController alloc]initWithRootViewController:profileVC];
}else{
// Not Login Yet
LoginViewController *loginVC = [[UIStoryboard storyboardWithName:#"Main" bundle:nil] instantiateViewControllerWithIdentifier:#"LoginVC"];
navController = [[UINavigationController alloc]initWithRootViewController:loginVC];
}
self.window.rootViewController = navController;
}
// Write this code when user login successfully
if (/*Login Successfully*/) {
// Then add loginUserDetails in userdefaults.
[[NSUserDefaults standardUserDefaults] setObject:nil forKey:#"loginUserDetails"];// Instead of nil pass here your object
[[NSUserDefaults standardUserDefaults] synchronize];
}
When i first come to Login Screen I store value in NSUserDefaults. When I press on signinButtonAction to move to DetailScreen it stucks and never moves forward.
I have made DetailScreen embedded in Navigationcontroller as InitialViewController even the next screen is not navigating to other screens when i re-run it again it comes to DetailScreen and then DetailScreen stucks to navigate to other screens.
How do I handle this?
My code is here:
AppDelegate
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
if ([[NSUserDefaults standardUserDefaults] objectForKey:#"email"])
{
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:#"Main" bundle:nil];
categoryVC *viewController = (categoryVC *)[storyboard instantiateViewControllerWithIdentifier:#"categoryVC"];
[self.window setRootViewController:viewController];
}
else
{
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:#"Main" bundle:nil];
signInVC *viewController = (signInVC *)[storyboard instantiateViewControllerWithIdentifier:#"signInVC"];
[self.window setRootViewController:viewController];
}
in SigninButtonAction I am doing:
{
categoryVC * second= [self.storyboard instantiateViewControllerWithIdentifier:#"categoryVC"];
[self.navigationController pushViewController:second animated:YES];
}
I would not set RootViewController if you have such a workflow. I would instantiate main view controller as is, and if you need to show auth I would use presentViewController. Later on, you can do dismiss or something like that.
So, in you app delegate:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
if (nil == [[NSUserDefaults standardUserDefaults] objectForKey:#"email"])
{
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:#"Main" bundle:nil];
categoryVC *viewController = (categoryVC *)[storyboard instantiateViewControllerWithIdentifier:#"signInVC"];
[self.window.rootViewController presentViewController:viewController animated:NO];
}
}
and then, when you do the auth and it passes:
[self dismissViewControllerAnimated:TRUE completion:nil];