I have buttons that opens facebook in webview on my app's mainview after i open facebook , i click to back button on navigation bar and after that i can't open facebook again. When i click the button the app doesn't crash but it doesn't do anything either.
This is my WebView's Controller
- (void)viewDidAppear:(BOOL)animated{
NSURL *socialUrl=[[NSURL alloc] initWithString:selectedUrl] ;
NSURLRequest *urlRequest=[NSURLRequest requestWithURL:socialUrl];
[webViewSocial loadRequest:urlRequest];
webViewSocial.scalesPageToFit = YES;
[self.navigationController setNavigationBarHidden:NO];
[super viewDidAppear:animated];}
And this is my code in mainview:
- (IBAction)facebookTouched:(id)sender {
socialPage = [[SocialMediaViewController alloc] initWithNibName:#"SocialMediaViewController" bundle:[NSBundle mainBundle]] ;
socialPage.selectedUrl = URL_FACEBOOK ;
socialPage.title = #"Facebook";
[self.navigationController pushViewController:socialPage animated:YES]; }
OK I solved my problem.
I deleted this part from my MainViewController and it worked.I did not think that this part was important so i didn't write it to my question.
(void)viewWillAppear:(BOOL)animated{
NSMutableArray *navigationArray = [[NSMutableArray alloc] initWithArray: self.navigationController.viewControllers];
[navigationArray removeObjectAtIndex: 0];
self.navigationController.viewControllers = navigationArray;
[self.view setNeedsDisplay];
[super viewWillAppear:animated];
}
Related
I am making an app with different view controllers. My home screen is in main.storyboard. Rest of the view controllers have their own xib, .h & .m files. I am trying this for navigation from home screen.
-(IBAction)btnSignUpTapped:(id)sender
{
SignUpWithEmailViewController * login = [[SignUpWithEmailViewController alloc] init];
UINavigationController *nav = [[UINavigationController alloc]
initWithRootViewController:login];
[self presentViewController:nav animated:YES completion:NULL];
}
This code works fine for navigating to different viewcontroller (in this case SignUpwithEmailViewController). On SignUpWithEmailViewController I have a back button which is supposed to bring me back to home screen. This is what I got so far:
-(IBAction)btnBackTapped:(id)sender
{
ViewController * homeScreen = [[ViewController alloc] init];
UINavigationController *nav = [[UINavigationController alloc]
initWithRootViewController:homeScreen];
[self presentViewController:nav animated:YES completion:NULL];
}
But as result of this code, screen turns black and nothing happens. How do I solve this problem? For hiding the nav bar I am using
-(void) viewWillAppear:(BOOL)animated
{
[[self navigationController] setNavigationBarHidden:YES animated:NO];
}
Yes, you have to insert you called viewController to NavigationController,
but if you wont to use modal flow - to close presentedViewController just call:
[self dismissViewControllerAnimated:YES completion:^{
}];
EDITED:
may be it will be more helpful, it just example, put it to you main view controller:
- (void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
UIViewController *c = [[UIViewController alloc] init];
c.view.backgroundColor = [UIColor redColor];
[self presentViewController:c animated:YES completion:^{
[self dismissViewControllerAnimated:YES completion:^{
}];
}];
}
this one is driving me crazy.
From my root view controller I'm pushing another view controller to force the user to enter some credentials in order to login. Unless the credentials aren't correct the user shall not be able to switch back to the root view. To accomplish this I'm trying to hide the back button but for some reason this doesn't work.
Any suggestions?
- (void)presentLoginWebView
{
UIViewController *webViewController = [[UIViewController alloc] init];
webViewController.title = NSLocalizedString(#"IB_LOG_IN_TITLE", nil);
UIWebView *webView = [[UIWebView alloc] initWithFrame:webViewController.view.frame];
webViewController.view = webView;
[self.navigationController pushViewController:webViewController animated:NO];
[webView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:IB_GET_OAUTH_TOKEN_URL]]];
webView.scalesPageToFit = YES;
webView.delegate = self; //delegate methods below
if (deviceVersion > 6)
{
[self.navigationController.interactivePopGestureRecognizer setEnabled:NO];
}
[self.navigationController.navigationItem setHidesBackButton:YES];
//The following line doesn't work either
//self.presentedViewController.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:[[UIView alloc] init]];
}
The following code will work. Try only navigationItem , not navigationController.navigationItem
webViewController.navigationItem.hidesBackButton = YES;
Try hiding back button of webViewController
webViewController.navigationItem.hidesBackButton = YES;
I am using a popover view to present a large amount of flags of which the your can select.
There is something wrong with my code since soon after I open this popover memory is not released (the viewcontroller "flagsViewController" is ok and clean, it does init and release each and every item inside of it.
What am I doing wrong? How can I free memory as soon as the popover is closed?
-(void)presentFlags
{
[self.popoverController dismissPopoverAnimated:YES];
FlagsViewController *controller = [[FlagsViewController alloc]
initWithNibName:#"FlagsViewController"
bundle:[NSBundle mainBundle]] ;
UINavigationController *container = [[UINavigationController alloc] initWithRootViewController:controller];
UISegmentedControl *ctrl = [[UISegmentedControl alloc] initWithItems:segmentedItems];
ctrl.frame = CGRectMake(0, 6, 500, 30);
[ctrl addTarget:self action:#selector(changeSeg:) forControlEvents:UIControlEventValueChanged];
ctrl.segmentedControlStyle = UISegmentedControlStyleBar;
//ctrl.momentary = YES;
ctrl.tintColor = [UIColor darkGrayColor];
UIImage *theImage = [UIImage imageNamed:#"highlight_country.png"];
[ctrl setImage:theImage forSegmentAtIndex:0];
[container.navigationBar addSubview:ctrl];
[ctrl release];
//
//create a popover controller
self.popoverController = [[[UIPopoverController alloc]
initWithContentViewController:container] autorelease];
[container release];
[popoverController setPopoverContentSize:CGSizeMake(500, 600)];
//present the popover view non-modal with a
//refrence to the button pressed within the current view
[popoverController presentPopoverFromRect:CGRectMake(popoverArrowPossition, 0.0, 0.0, 52.0) inView:super.view permittedArrowDirections:UIPopoverArrowDirectionUp animated:YES];
[controller release];
}
Working with the UIPopoverController has been pretty difficult but I solved this problem by doing the following setting the Delegate of the Popover Controller to self (popoverController.delegate = self) and adding the UIPopoverControllerDelegate Protocol to your Class Header
Next, I implemented the - (void)popoverControllerDidDismissPopover:(UIPopoverController *)popoverController delegate method and here I released the popoverController and set it to nil.
- (void)popoverControllerDidDismissPopover:(UIPopoverController *)popoverController {
[self.popoverController release];
self.popoverController = nil;
}
Please note: This delegate method won't be called if you dismiss the popover via code (i.e. using dismissPopoverAnimated), it'll only be called if this User dismisses it by tapping outside the popover etc.
I get an orientation problem while using the following to code to display a view on top of a split view.
[window addSubview:aSplitViewController.view];
[window insertSubview:aViewController.view aboveSubview:aSplitViewController.view];
the plain view has a couple of buttons and labels.
So the problem I am facing is that the first view opens in landscape mode but the labels and buttons on the view are in portrait mode.
UPDATE: Here is some code so if anyone wants to see more details...
In my App Delegate
- (void) makeSplitViewController {
NSMutableArray *controllers = [NSMutableArray arrayWithArray:tabBarController.viewControllers];
// First tabbbar item
// detail view
detailViewController = [[DetailViewController alloc] initWithNibName:#"DetailView" bundle:nil];
UINavigationController *navDetailView = [[[UINavigationController alloc] initWithRootViewController:detailViewController] autorelease];
navDetailView.hidesBottomBarWhenPushed = YES;
// root view
rootViewController = [[RootViewController alloc] initWithStyle:UITableViewStylePlain];
rootViewController.detailViewController = detailViewController;
rootViewController.navigationItem.title = #"List";
UINavigationController *navRootView = [[[UINavigationController alloc] initWithRootViewController:rootViewController] autorelease];
navRootView.hidesBottomBarWhenPushed = YES;
navRootView.navigationBar.barStyle = UIBarStyleBlackTranslucent;
splitViewController = [[UISplitViewController alloc] init];
splitViewController.tabBarItem.title = #"Face Sheet";
splitViewController.tabBarItem.image = [UIImage imageNamed:#"gear1.png"];
splitViewController.navigationItem.title = #"Face Sheet";
splitViewController.viewControllers = [NSArray arrayWithObjects:navRootView, navDetailView, nil];
splitViewController.delegate = detailViewController;
splitViewController.hidesBottomBarWhenPushed = YES;
[controllers addObject:splitViewController];
// Second tabbbar item
scoreViewController = [[ScoreCardViewController alloc] initWithNibName:#"TableViewController" bundle:nil];
scoreViewController.tabBarItem.title = #"Score Card";
scoreViewController.tabBarItem.image = [UIImage imageNamed:#"gear1.png"];
scoreViewController.navigationItem.title = #"Score Card";
[controllers addObject:scoreViewController];
tabBarController.viewControllers = controllers;
}
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
// Override point for customization after application launch.
// Create tabbar
tabBarController = [[UITabBarController alloc] init];
//tabBarController.delegate = self;
// Set window
[window addSubview:splashController.view];
[window insertSubview:tabBarController.view belowSubview:splashController.view];
[self.window makeKeyAndVisible];
application.statusBarOrientation = UIInterfaceOrientationLandscapeRight;
return YES;
}
and here is the code in my SplashScreenView
- (IBAction) proceedButtonClick:(id)sender
{
// Initialize loginpopview
PhysicianLoginViewController *loginViewController = [[PhysicianLoginViewController alloc] init];
popOverController = [[UIPopoverController alloc] initWithContentViewController:loginViewController];
popOverController.popoverContentSize = CGSizeMake(350, 200);
popOverController.delegate = self;
// Set a notification to dismiss it later
[[NSNotificationCenter defaultCenter] addObserver:self selector:#selector(loginViewControllerDone:) name:#"loginViewControllerDone" object:popOverController.contentViewController];
// Present popover
if ([popOverController isPopoverVisible])
{
[popOverController dismissPopoverAnimated:YES];
}
else
{
[popOverController presentPopoverFromRect:CGRectMake(485, 600, 100, 100) inView:self.view permittedArrowDirections:UIPopoverArrowDirectionDown animated:YES];
}
}
// Dismiss popview controller and setup the tabbar
- (void)loginViewControllerDone:(NSNotification *)notification{
[[NSNotificationCenter defaultCenter] removeObserver:self];
// Button in content view controller was tapped, dismiss popover...
[self.popOverController dismissPopoverAnimated:YES];
// remove subview
[self.view removeFromSuperview];
// set tabbar
i3EAppDelegate *appDelegate = (i3EAppDelegate *) [[UIApplication sharedApplication]delegate];
[appDelegate makeSplitViewController];
}
It would be great if someone could point out where I am going wrong. I have been stuck with this problem for quite a few days and I have tried everything that comes to my mind...
UIWindow has a subview that it uses for rotations and puts other views inside of that. You need to insert yourself into the root view (or something lower), not the window. Look at -[UIWindow rootViewController].
UIView *rootView = [[[self window] rootViewController] view];
[rootView addSubview:view];
This will work as long as you're using something with a root view controller. This will work as long as rootViewController isn't nil. If you're doing a raw "View Based" application, then it's usually best to pick another view and add your view as its sibling rather than digging through the undocumented hierarchy:
UIView *sibling = ... (some other view)
[[sibling superview] addSubview:view];
I am a total newbie in the ipad app development.
I am interested in creating an application where i have a popover showing a tableview with list of items. Then i select an item and the view drills to another tableview consisting of another list of items and a navigate back button as well.
the level to which i would be drilling down is dynamic.
Please guide me with appropriate resources to help me solve the problem.
I did it before and it works well!
Just assign this function to your button (perhaps an UIBarButtonItem):
UIPopoverController *popover;
bool isPopoverOpen = false;
-(void)openPopover{
if(!isPopoverOpen){
FirstViewController *firstViewCtrl = [[PartsViewCtrl alloc] init];
UINavigationController *navbar = [[UINavigationController alloc] initWithRootViewController:firstViewCtrl];
[firstViewCtrl release];
navbar.contentSizeForViewInPopover = CGSizeMake(TABLE_WIDTH, TABLE_HEIGHT);
popover = [[UIPopoverController alloc] initWithContentViewController:navbar];
[navbar release];
popover.delegate = self;
popover.popoverContentSize = CGSizeMake(TABLE_WIDTH, TABLE_HEIGHT);
[popoverOnPartsView presentPopoverFromBarButtonItem:barButtonItem permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];
isPopoverOpen = true;
}else{
[popover dismissPopoverAnimated:YES];
[popover release];
isPopoverOpen = false;
}
}
And implement this function to FirstViewController which has an UITableView:
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
SecondViewController *secondViewController = [[SecondViewController alloc] init];
[self.navigationController pushViewController:secondViewController animated:YES];
[secondViewController release];
}
Now you can add an UITableView to SecondViewController, Too. And use this scenario for other tables!
I hope it works for you!
When you create the popover, you just need to allocate a UINavigationController and use this to manage the view hierarchy within the popover itself. A quick web search revealed this tutorial which covers the things you need to know.
I also meant to add that you should get up to speed with Objective-C and iOS development in general. Don't try and blindly use things you've found on the net without understanding what you're actually doing :)
Do the following steps
1)In the action of button (by clicking on that button pop over should appear) write the code
[here PopOverContentViewController is a viewController where i have table view and several list of items which should be displayed when the pop over arrives]
- (IBAction)callPopOver:(id)sender
{
UIButton *button = (UIButton*)sender;
PopOverContentViewController1 *popOverContent = [[PopOverContentViewController1 alloc]initWithNibName:#"PopOverContentViewController1" bundle:nil];
UINavigationController *navbar = [[UINavigationController alloc] initWithRootViewController:popOverContent];
navbar.contentSizeForViewInPopover = CGSizeMake(266, 200);
popover = [[UIPopoverController alloc] initWithContentViewController:navbar];
popover.delegate = self;
[popover presentPopoverFromRect:CGRectMake(button.frame.size.width / 2, button.frame.size.height / 1, 1, 1) inView:button permittedArrowDirections:UIPopoverArrowDirectionUp animated:YES];
[popover setPopoverContentSize:CGSizeMake(266, 200) animated:YES];
[popUpContent release];
}
2)now to change the table view on clicking on any of the rows type this code in PopOverViewController.m
[here PopOverViewController2 is the ViewController where we have the next table view to be displayed]
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
PopOverViewController2 *secondViewController = [[PopOverViewController2 alloc] init];
[self.navigationController pushViewController:secondViewController animated:YES];
[secondViewController release];
}
3)to avoid the change in size of popover while navigation write the following code in viewDidLoad of both view controllers (ie PopOverContentViewController1 and PopOverContentViewController2)
- (void)viewDidLoad
{
[super viewDidLoad];
[self setContentSizeForViewInPopover:CGSizeMake(266, 200)];
}