I am trying to accomplish the following:
What I would like to do is:
1.) When the user clicks on a button in UIViewController, it will retrieve a list of items.
2.) The items will then be displayed in UITableView.
3.) Lastly the number of items will be displayed on the third view (not initiated by UITableView)
All the above I manage, except that I would like to wrap all these controllers in a customized tab bar controller. But the data is not being passed from the UIViewController to the UITableView or the other View. I am using Storyboard, I hooked up tab bar controller and the other 3 controllers there as view controllers. I have tried instantiating UITableView and the UIView controllers using UIStoryboard method and creating instances of these controllers and send the data to them, the controllers are shown in tab bar controller, but data is not. I am not using Segue, by the way. Am I missing something here?
Thanks.
CODE:
UITabBarController tabBarController = (UITabBarController) self.window.rootViewController;
UIStoryboard *storyboard1 = [UIStoryboard storyboardWithName:#"MainStoryboard_iPhone" bundle:[NSBundle mainBundle]];
mainViewController *mainController = (mainViewController*)[storyboard1 instantiateViewControllerWithIdentifier:#"mainController"];
UIStoryboard *storyboard2 = [UIStoryboard storyboardWithName:#"MainStoryboard_iPhone" bundle:[NSBundle mainBundle]];
tableViewController *tableview = (tableViewController*)[storyboard2 instantiateViewControllerWithIdentifier:#"tableviewController"];
UIStoryboard *storyboard4 = [UIStoryboard storyboardWithName:#"MainStoryboard_iPhone" bundle:[NSBundle mainBundle]];
resultController *mapView = (resultController*)[storyboard4 instantiateViewControllerWithIdentifier:#"resultView"];</code>
I have tried also creating the UI Table View and the result view controller in MainViewController and pass data to them (before they are even displayed), but no data is ever present when these controllers are displayed. I made sure I alloc and init these controllers properly and NSLog shows that the instance methods in these controllers are called, but still no data is shown, even though the controllers are displayed in tab bar view controller, when they are displayed.
UPDATE 2:
Now I am trying to do the following:
self.tableviewController = [self.tabBarController.viewControllers objectAtIndex:1];
self.resultViewController = [self.tabBarController.viewControllers objectAtIndex:2];
And when I call these:
NSLog(#"%#", [self.tabBarController class]);
NSLog(#"%#", [self.tableViewController class]);
NSLog(#"%#", [self.resultViewController class]);
They are all null.
Basically, I have 3 View Controllers hooked up as "view controllers" using storyboard to a UITabbarController. The main view controller (at index 0 in UITabbarController), from which I call the above, simply has one UIButton. Once pressed it will fetch a list of strings and send it to the Table View (at index 1 in UITabbarController) and on the last View Controller (at index 2 in UITabbarController) it will show just the number of strings as a result, which it receives from the Main View Controller, not from Table View.
I am not using any UINavigationController in my set up.
I would like to be able to fire off Table View and the Result View Controller before they are even displayed by clicking on the bar item tab on UITabbarController. By firing off I mean the data will be sent over to Table View and Result View even though they are not yet displayed.
The code you present is unnecessary and wrong for what you want to achieve. (Usually you should have one instance of UIStoryboard.) Read the docs.
You do not write anything about how you try to achieve the communication between the view controllers. There are several methods. But use delegation. Read the docs.
If you answer to a comment you should use the # character followed by the SO user name so he is notified about your updates.
Related
I have been working on this problem for a while and thought I would ask for some help. I have 3 view-controllers: 1 Navigation Controller, 1 Main controller and 1 detail view controller.
Within the main view controller, I have a series of subviews with buttons. Due to the class structure, however, I am unable to directly call self.storyboard to get the current storyboard object.
I have tried 2 different methods, a variety of ways, and am still unsuccessful. I posted my methods below and described what is and what is not happening in each segment. The overall goal is to present a child view controller (the detail view) by tapping a button in a subview, of which does not have access to the parent storyboard directly.
Method 1
//Instantiate the new view controller
ProfileViewViewController *tempViewToShow = [del.window.rootViewController.storyboard instantiateViewControllerWithIdentifier:#"profile"];
// Pass data into the new view controller
tempViewToShow.thisUser = self.postUser;
// Output a simple log to ensure both were created
NSLog(#"Temp User Name: %#, Profile Desc: %#", [tempViewToShow.thisUser getFullName], tempViewToShow.description);
// Using the AppDelegate for the RootViewController, present the detail view
[UIApplication.sharedApplication.delegate.window.rootViewController presentViewController:tempViewToShow animated:YES completion:NULL];
Issues
The issue with this series is that the detail view does not carry the navigation controller (since it is not mentioned), however, this way still shows a full View Controller
Method 2
...
// Use the Delegate and the navigation controller to present the new view controller
[UIApplication.sharedApplication.delegate.window.rootViewController.navigationController presentViewController:tempViewToShow animated:YES completion:NULL];
Issues
Does not display anything
Method 3
// Use the recommended 'pushViewController' for the navigation controller to carry over
[UIApplication.sharedApplication.delegate.window.rootViewController.navigationController pushViewController:tempViewToShow animated:NO];
Issues
Does not display anything
En toto, how would I make this work? What lines would I modify and how? Thanks!
You can solve this issue like this:
ProfileViewViewController *tempViewToShow = [del.window.rootViewController.storyboard instantiateViewControllerWithIdentifier:#"profile"];
UINavigationController *naviController = [[UINavigationController alloc] tempViewToShow];
And then do this :
[UIApplication.sharedApplication.delegate.window.rootViewController presentViewController:naviController animated:YES completion:NULL];
You can create instance of storyboard from storyboard name.once you have correct storyboard instance, get NavigationController from Its identifier, and detailviewController from its identifier. Push detailviewcontroller on Navigationviewcontroller.
get storyboard-- replace name of your storyboard in "MainSToryboard"
UIStoryboard *storyboard =
[UIStoryboard storyboardWithName:#"MainStoryboard"
bundle:[NSBundle mainBundle]];
get instance of Navigationcontroller - replace identifier:
UINavigationController *navController =(UINavigationController *)
[storyboard instantiateViewControllerWithIdentifier:#"navcontroller"];
get detailviewconrtoller :
UIViewController *detailvc=
[storyboard instantiateViewControllerWithIdentifier:#"profile"];
Push detail on current navigationcontroller:
[navController pushViewController:detailvc animated:YES];
I found an alternate solution. The cause was because the incorrect view controller was being called by
UIApplication.sharedApplication.delegate.window.rootViewController.*
The workaround is:
In the primary view controller class, I passed the displayed viewcontroller into the delegate class. Then, from the child class I wanted to call, I referenced that view controller, and navigation controller, and it worked just fine. My final code is below:
// Create the detail View Controller
ProfileViewViewController *tempViewToShow = [del.window.rootViewController.storyboard instantiateViewControllerWithIdentifier:#"profile"];
// Set the user variable in the detail view controller
tempViewToShow.thisUser = self.postUser;
// Push the view controller into the navigation controller
// Note that del.currentNav comes from this code:
/*
* In this class, create the delegate reference
* AppDelegate *del = (AppDelegate *)[[UIApplication sharedApplication] delegate]
*
* In the Delegate class, get the set the current navigation controller {let currentVC : UIViewController = passedInVC}
* self.currentNav = currentVC.navigationController;
*/
[del.currentNav pushViewController:tempViewToShow animated:YES];
I added a Navigation Controller to my storyboard and it appears like so:
Now in the table view controller, I gave the TableViewController a storyboard id and class to a TableViewController Controller
When I run my app, I don't see the Navigation Bar at the top. This has been extremely frustrating and can't find a solution anywhere. PLEASE HELP
To get to the scene, someone clicks a button and this code runs and it goes to my Table View Controller:
UIStoryboard *storyBoard = [UIStoryboard storyboardWithName:#"Storyboard" bundle:nil];
LHFileBrowser *LHFileBrowser = [storyBoard instantiateViewControllerWithIdentifier:#"FileBrowser"];
[self.navigationController pushViewController:LHFileBrowser animated:YES];
[self presentViewController:LHFileBrowser animated:YES completion:nil];
The error is in your code.
If you want to (modally) present a view controller when the user presses a button, you need to present the navigation controller (which will contain the table view controller), not the table view controller itself.
Right now, you're presenting the view controller, which won't show it being embedded in a navigation controller.
Also, you're mixing up two different approaches, by trying to push a view controller onto a navigation controller stack, and also presenting the view controller.
Code Sample:
Here's what you apparently mean to do:
UIStoryboard *storyboard = self.storyboard;
UINavigationController *navigationController = [storyboard instantiateViewControllerWithIdentifier:#"MyNavigationControllerID"];
LHFileBrowser *rootViewController = [navigationController topViewController];
// Configure your LHFileBrowser view controller here.
rootViewController.someProperty = ...;
// Modally present the embedded view controller
[self presentViewController:navigationController animated:YES completion:nil];
If you want to change the presentation or transition style, you can set those details in your storyboard.
You didn't explain why you had to programmatically add buttons, but Storyboard segues would have instantiated and presented an embedded view controller for you, without you having to have done it in code.
The more you can do in Storyboard, the less code you have to maintain, support, and update, and the more likely your app will still work properly when a new SDK is released.
Update:
The better way to do this is to let Storyboard do it for you, by adding a segue from the button to the navigation controller that you want to present.
I want to create a Master-Detail Application which contains 3 Views in a master-detail hierarchy.
First View=>Second View=>Third View
When I create a Master-Detail Project, XCode creates two ViewControllers; a Master View controller and a Detail View Controller... I want to add a third ViewController to project and open this new View from a TableView in DetailView Controller.
I am little confused about this, I added a new UIViewController class to my project but I can't understand how I create a relationship between my new view and DetailView Controller?
If you would like to use DetailController -> YOur next Controller you can use it like this
Open your storyboard and add there a view controller
Set an unique title to this view controller - U can find this option under like shield icon in the right menu. Set the title whatever you want (lets say my_detailed_controller)
And then in case you want to go from the detail view controller to the further more detailed controller you call this snippet :
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:#"MainStoryboard" bundle: nil];
YOURVIEWCONTROLLER *lvc = [storyboard instantiateViewControllerWithIdentifier:#"my_detailed_controller"];
[self.navigationController pushViewController:lvc animated:YES];
Well I have read those posts and tutorials but they made me more confused:
url 1
quest 1
quest 2
What i want is to do this:
At the beginning my app, has a table view. when I press a row, it should take me to another view which has tabs.
What I did so far was these:
1) Created a navigation controller , and there is my tableview. When I press a row, a single view opens. In that view (with its own .xib file) I added tab bars items.
You can see pictures here:
But now, I don't know how to make it when pressing a tab bar item, to open a new view. I am trying to embed my view in a controller but I cannot.
2) Then I tried this:
Having my navigation controller as before and I added in storyboard a tabbar controller like in that picture:
But I cannot connect them. My first view is class "SkiCenter" and code I am using is:
SkiCenter *myDetViewCont = [[SkiCenter alloc] initWithNibName:#"SkiCenter" bundle:[NSBundle mainBundle]];
myDetViewCont.ski_center=[centers objectAtIndex:indexPath.row];
[self.navigationController pushViewController:myDetViewCont animated:YES]; // "Pushing the controller on the screen"
[myDetViewCont release]; // releasing controller from the memory
myDetViewCont = nil;
and I get SIGBRT that says something about .nib file for "SkiCenter".
Can you suggest a sollution in either 1 or 2?
just to make it more clear:
Solution 1:
pressing the row gets me to a single uiview named skicentermain. I have added several tabbaritems but I do not know how to make them open new views.
Sollution 2:
Inserted a tabbar controller. Its first tab is SkiCenter. But when pressing the row, I get a sigbart error. it says something about the nib file of SkiCenter.
If you decide to use storyboard you can simply put an identifier to any view controller from attributes inspector and then instantiate it with its id.
UIStoryboard * storyBoard = [UIStoryboard storyboardWithName:#"MainStoryboard" bundle:nil];
[[self navigationController] pushViewController:[storyBoard instantiateViewControllerWithIdentifier:#"ViewControllerID"] animated:YES];
It looks like your declaring your *myDetViewCont incorrectly. You called your nib SkiCenterMain, not SkiCenter. Also, what exactly is on SkiCenterMain? Is that a UITabBarController?
//SkiCenter *myDetViewCont = [[SkiCenter alloc] initWithNibName:#"SkiCenter" bundle:[NSBundle mainBundle]];
SkiCenter *myDetViewCont = [[SkiCenter alloc] initWithNibName:#"SkiCenterMain" bundle:[NSBundle mainBundle]];
This is the first time I'm trying to implement navigation from a tableView cell to another tableView using UINavigationController and it doesn't work for me.
I'm NOT using nib file and I have a simple tableView that I present it in a modal dialog in my app, it works fine, now I added the disclosureInidcator to one of it's cell, to make the user enable to choose from a fixed number of options available from another list(tableView). For this purpose I have another class that makes the second tableView. the problem is now navigation from the cell(contains disclosure icon)in first tableview to second tableView doesn't do anything, no error, no nothing. I guess the way I setup the navigation controller would be wrong, the code doesn't fall in delegate, or datasource of the second class at all.
in First TableView in method : didSelectRowAtIndexPath I tried to catch that row, then call the second tableView like this:
mySecondViewController *secondVC = [[[mySecondViewController alloc] initWithStyle:UITableViewStyleGrouped ] autorelease];
UINavigationController *navCont = [[UINavigationController alloc] initWithRootViewController: self];//not sure the first controller should act as the root controller?
[navCont pushViewController:secondVC animated:YES]; //it does nothing, no error,...
the second tableViewcontroller class contains all delegate and datasource methods, and initialization method:
- (id)initWithStyle:(UITableViewStyle)style
{
if ((self = [super initWithStyle:style])) {
}
return self;
}
and declared in interface as:
#interface stockOptionViewController : UITableViewController {
}
I tried to play with viewDidLoad, but didn't help.
Please help me cause I have no clue and all sample codes found is based on using nib files.
Thank,
Kam
Your navigation controller should be the root view controller of the app delegate's window, and the first view controller should be the root view controller of the navigation controller, then you can push new controllers onto it.
Please see the documentation for UINavigationController.
At the moment, you are creating a navigation controller but not putting it anywhere, so asking it to push new view controllers is a little pointless. You have the right code, just not in the right order.
You can present view control modally without nav controller
mySecondViewController *secondVC = [[[mySecondViewController alloc] initWithStyle:UITableViewStyleGrouped ] autorelease];
[self presentModalViewController:secondVC animated:YES];
UINavigationController should be the root view controller. In the current code, navCont is not on the view stack, so it won't work. Instead of pushing myFirstViewController in your appDelegate, push the UINavigationController to the stack and add myFirstViewController as its root view controller.