So I have a view-based app in which I need one page with a tableview and I wanted a navigation bar above it to go back. I added this programmatically with:
-(IBAction)switchToTableView; {
tableView *table = [[tableView alloc] initWithNibName:#"tableView" bundle:nil];
UINavigationController *navControl = [[UINavigationController alloc] initWithRootViewController: table];
table.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
[table release];
[self presentModalViewController: navControl animated:YES];
[navControl release];
}
Then in the viewDidLoad of the tableview class I implemented:
- (void)viewDidLoad
{
self.tableView.rowHeight = 70.f;
UIBarButtonItem *back = [[UIBarButtonItem alloc]
initWithTitle:#"Back"
style:UIBarButtonItemStyleDone
target:self
action:#selector(switchToHome)];
self.navigationItem.leftBarButtonItem = back;
UIBarButtonItem *map = [[UIBarButtonItem alloc]
initWithTitle:#"Map"
style:UIBarButtonItemStyleDone
target:self
action:#selector(switchBacktoFindArt)];
self.navigationItem.rightBarButtonItem = map;
[map release];
[super viewDidLoad];
}
to add the needed buttons. Now, all of this worked great, but now that I'm going through my app and allowing for orientation changes, I'm having trouble with this one since I can't change the autoresizingMask in IB. The whole tableview page resizes nicely except the navigation bar becomes very skinny top-to-bottom wise. I'd like it to stay the same height. How do I go about setting the appropriate Masks or even accessing the navigation bar outside of IB?
I suppose you can play with things like this to disable height changes:
navControl.navigationBar.autoresizingMask ^= UIViewAutoresizingFlexibleHeight
But a UINavigationController might really get wonky if you play around with its internals like that. I'm surprised that the nav's bar isn't already resizing to an appropriately pleasing height, like it's supposed to do by default. (It feels like something else might be wrong elsewhere in your code, but I'd have to see more to find out).
Related
I'm trying to write a tabbed application where each tab is a Navigation Controller. This tab bar appears at every view in the navigation controller as its being inferred on each view.
I would like to replace this tab bar on a detail view with a tool bar with a couple of buttons on it.
I've tried the following code in that detail view's viewDidLoad: method
self.navigationController.toolbarHidden = NO;
self.navigationController.toolbar.barStyle = UIBarStyleBlackTranslucent;
UIBarButtonItem *accept = [[UIBarButtonItem alloc] initWithTitle:#"Accept"
style:UIBarButtonItemStyleBordered
target:self
action:nil];
UIBarButtonItem *decline = [[UIBarButtonItem alloc] initWithTitle:#"Decline"
style:UIBarButtonItemStyleBordered
target:self
action:nil];
NSArray *items = [NSArray arrayWithObjects:accept, decline, nil];
[self.navigationController.toolbar setItems:items animated:YES];
// code suggested
[self.view addSubview:self.navigationController.toolbar];
It still doesn't show up. Though hides the tab bar now for adding the following line in the view that's presenting the detail view:-
theDetailTableViewController.hidesBottomBarWhenPushed = YES;
Have I missed something?
I usually put toolbarHidden = YES or NO, as applicable, in the viewWillAppear or viewDidAppear methods. I am not sure if that is why it is not working for you, but you need to address when you return to the presenting view anyway.
If you don't address it, the toolbar will still be visible when you go back.
Wherever you are pushing your detailViewController from, do this to hide the Tab Bar in the detail view:
DetailViewController *detailViewController = [[DetailViewController alloc] initWithNibName:#"DetailViewController" bundle:nil];
detailViewController.hidesBottomBarWhenPushed = YES;
[self.navigationController detailViewController animated:YES];
and in your detail view, just add the ToolBar as a subview to the detailView.
This is driving me insane! (ios 5+, ARC)
Pretty simple concept here:
I have a UIView with an embedded UITableView, when clicking on a specific cell, I have iOS launch a modalview with a segue.
This modalview, is a UIView with an Embedded UITableView in it, filled with names from a data source. You can choose multiple items in this view (using cellaccessory: checkmark)
The Goal
Get some sort of "Done" button to show up
Ok, so after much running around, I am to understand that Modal windows do not, in fact, allow navigationController items. No toolbars, no Navigationbars by default.
Ok, so I'll create my own.
- (void)viewDidLoad
{
[super viewDidLoad];
NSInteger tbHeight = 50;
UIToolbar *tb = [[UIToolbar alloc] initWithFrame:CGRectMake(0, (self.view.frame.size.height - tbHeight), self.view.frame.size.width, tbHeight)];
tb.translucent = YES;
UIBarButtonItem *flexibleSpace = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil];
UIBarButtonItem *doneButton = [[UIBarButtonItem alloc] initWithTitle:#"Done" style:UIBarButtonItemStyleBordered target:self action:#selector(doneAction:)];
NSArray *barButton = [[NSArray alloc] initWithObjects:flexibleSpace,doneButton,nil];
[tb setItems:barButton];
[self.view addSubview:tb];
barButton = nil;
//....
}
Simple enough right?
Well, the toolbar does show up, for sure. BUT, it doesnt stick to the bottom like its supposed to. In fact, when you scroll the embedded tableview up and down, the UIToolbar goes with it, almost like its stuck on the tablevie somehow.
Ive been looking for hours for solutions, I've come across nothing. Wondering if anybody here has any ideas?
If you need more information, please by all means, enquire :)
It's strange that your toolbar is scrolling with the table if it's a UIViewController subclass, unless you've assigned a UITableView to self.view or something... But since it is, this is what I do when adding a fixed item to a table view:
-(void) scrollViewDidScroll:(UIScrollView *)scrollView {
tb.frame = CGRectMake(0, self.view.bounds.size.height-tb.bounds.size.height+scrollView.contentOffset.y, self.view.bounds.size.width, tb.bounds.size.height);
}
So I have a UIPopoverController what houses my UINavigationController where I have my UITableViewController however one of my options on the UITableView is to go and select an image with the UIImagePickerController... Now on the iPhone I can simply use presentModalViewController:animated: however calling that from within a UIPopoverController causes a crash so thats not possible...
I also know the UIImagePickerController needs its own UINavigationController so I can't just push pushViewController:animated: either...
So I figured out that if I keep a link to the UIPopoverController I created, I can then use setContentViewController:animated: to switch to the UIImagePickerController's viewController...
However, I am now stuck at giving the user a way to go back to the previous UINavigationController as I need to be able to add a cancel button to the UIImagePickerController but when I try to do this the cancel button won't get added...
Heres my code that i'm using
-(void)doPhotoalbums {
if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary]) {
UIImagePickerController *imagePicker = [[UIImagePickerController alloc] init];
[imagePicker setDelegate:self];
[imagePicker setSourceType:UIImagePickerControllerSourceTypePhotoLibrary];
[imagePicker setContentSizeForViewInPopover:CGSizeMake(320, 480)];
UIBarButtonItem *cancel = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemCancel target:self action:nil];
[imagePicker.navigationItem setLeftBarButtonItem:cancel];
//[self presentModalViewController:imagePicker animated:YES];
[[self parentPopoverController] setContentViewController:imagePicker animated:YES];
} else {
[UIAlertView showMessage:#"This device does not have any photo albums."];
}
}
So my question is.. Does anybody know how I can get around this? either by adding a cancel/back button what I can hook up to make the navigationControllers switch back or another way to present this (i'd like to avoid switching between two UIPopoverControllers but I don't know what else I can do..
Thanks
Liam
Ahh.. after a little break I found this: https://discussions.apple.com/thread/1710435?start=0&tstart=0
using the UINavigationControllerDelegate you can use the navigationController:willShowViewController:animated: method to access the navigationBar.. then with some code (below) you can add a button.
if ([navigationController isKindOfClass:[UIImagePickerController class]]) {
UINavigationBar *bar = navigationController.navigationBar;
UINavigationItem *top = bar.topItem;
UIBarButtonItem *cancel = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemCancel target:self action:#selector(imagePickerControllerDidCancel:)];
[top setLeftBarButtonItem:cancel];
} else {
//do non imagePickerController things
}
In my AppDelegate, I create a UITabBarController and UINavigationController dynamically. I then add 3 views to it.
// Prepare the tab bar controller
tabBarController = [[UITabBarController alloc] init];
// Switch controller
UserSettingsController *settingsController = [[UserSettingsController alloc] init];
// Switches controller
SwitchesController *switchesController = [[SwitchesController alloc] init];
// Help controller
HelpController *helpController = [[HelpController alloc] init];
NSArray *controllers = [NSArray arrayWithObjects: switchesController, settingsController, helpController, nil];
tabBarController.viewControllers = controllers;
if (self.navigationController == nil) {
self.navigationController = [[UINavigationController alloc] initWithRootViewController:tabBarController];
}
[window addSubview:navigationController.view];
When I initially did this, I noticed that I now have a header/title bar at the top of my page. It's blank and really just takes up space. I'd like to utilize it though and add a "refresh" button to one of my views.
In the view I'm interested in, I attempted the following:
-(void)viewDidLoad {
[super viewDidLoad];
UIBarButtonItem *refresh = [[UIBarButtonItem alloc] initWithTitle:#"Refresh" style:UIBarButtonItemStylePlain target:self action:#selector(refreshSwitches:)];
self.navigationItem.rightBarButtonItem = refresh;
[refresh release];
}
-(void)refresh{
...
}
No button showed up, so I'm either way off or I'm missing something.
Any suggestions?
Thanks
I believe the problem is that your view controllers that you've added to the tabbar controller are not encapsulated by navigation controllers. Although your UITabBarController has a navigation controller, this does not implicitly give all of its tabs navigation controllers (and without a nav controller, a view controller's navigationItem won't do anything.) To remedy this problem I'd suggest encapsulating your view controllers with navigation controller upon initialization:
ex:
UserSettingsController *settingsController = [[UserSettingsController alloc] init];
UINavigationController *navController = [[UINavigationController alloc] initWithRootViewController:settingsController];
[settingsController release];
// etc...
NSArray *controllers = [NSArray arrayWithObjects:navController, ..., ..., nil];
tabBarController.viewControllers = controllers;
// Release your nav controllers, other cleanup
EDIT
Okay, I think I have a better idea of your setup now. I was able to get the following to work:
self.tabBarController.navigationItem.rightBarButtonItem = myButton;
An important caveat of this is that the button will persist on all of your tabbarcontroller's views unless you explicitly remove it. This may prove annoying/inelegant to maintain, but I am not sure of another solution if the view you want to have the button is not directly associated to a nav controller itself.
I understand modal views cover the entire screen. But I really want a view that covers only half the screen just like the keyboard. So, please tell me why this doesn't work
MyController *controller = [[MyController alloc] initWithNibName:#"MyView" bundle:nil];
CGRect frame = CGRectMake(0,44,768,264);
[controller view].frame = frame;
contoller.delegate = self;
[[self view] addSubView:[controller view]];
[controller release];
I am trying to add a sub view to my current view and make it appear where the keyboard appears.
It throws a BAD ACCESS exception
In my code (above), I was using a custom UIViewController with it's own view [set to UIView on IB]. I couldn't get it to work by setting frame for the view controller's view.
So I added a custom UIView without a Nib file with all the controls (buttons, textfields) added on initWithFrame.
MyCustomView = [[MyCustomView] alloc] initWithFrame:frame delegate:self];
[self.view addSubView:MyCustomView];
Thanks for your comment, Jacob.