I'm stuck on something.
I'm using three20 and the TTTNavigator example. Where I can find a TabBarController that is using :
[self setTabURLs:[NSArray arrayWithObjects:#"tt://crush",
#"tt://crushes",
nil]];
to create each tab.
Ok until here all is ok, my problem is that I have all my tabs without title and image. I know how to set individual when it loads the view controller inside - (void)viewDidLoad :
self.title = #"crush";
UIImage* image = [UIImage imageNamed:self.title];
self.tabBarItem = [[[UITabBarItem alloc] initWithTitle:self.title image:image tag:0] autorelease];
but this is a problem because when you init the app all the tabs except the selected are empty.
Any suggest on how to implement that.
Ok I've resolved, I used the -init method of each view controller.. like usually... but what I need to change was :
[self setTabURLs:[NSArray arrayWithObjects:#"tt://crush/1",
#"tt://crushes/2",
nil]];
And in the map :
[map from:#"tt://crush/(init)" toViewController:[MakeCrushViewController class]];
[map from:#"tt://crushes/(init)" toViewController:[MyCrushesViewController class]];
for me right now it looks pretty weird.. but ok is working, don't ask me why you need to set 1 and 2 before the links.. if I set 1 on each it crashes...
This guy had an answer to this question in this blog post.1
Basically, within your tab view controller, just access the your view controllers
like you would without three20. In your tab view controller implimentation file
-(void)viewDidLoad{
[super viewDidLoad];
NSArray *tabs = [self viewControllers];
UIViewController *home = [tabs objectAtIndex:0];
home.tabBarItem.image = [UIImage imageNamed:#"redo.png"];
UIViewController *activities = [tabs objectAtIndex:1];
activities.tabBarItem.image = [UIImage imageNamed:#"restart.png"];
UIViewController *map = [tabs objectAtIndex:2];
map.tabBarItem.image = [UIImage imageNamed:#"lock.png"];
}
Related
I am using a UIButton, on clicking it I want to display the contents that are present in my NSMutableArray in UITableView with the help of UIPopOverController i.e. I want a UITableView to pop up whose cells show the contents of my NSMutableArray.
I am using the following lines of code:
UITableViewController *table= [[UITableViewController alloc]init];
table.delegate = self;
UIPopoverController *popover = [[UIPopoverController alloc] initWithContentViewController:table];
self.popoverController = popover;
popoverController.delegate = self;
NSString *hDir = [NSHomeDirectory() stringByAppendingPathComponent:#"Documents"];
NSString *hFilePath = [hisDir stringByAppendingPathComponent:#"hhhh.txt"];
NSArray *array = [NSArray arrayWithContentsOfFile:hFilePath ];
NSMutableArray *kkkk = [[NSMutableArray alloc] init];
for (NSDictionary *dict in array) {
[kkkk addObjectsFromArray:[dict allKeys]];
}
table = [[UIImageView alloc] initWithFrame:[window bounds]];
// Set up the image view and add it to the view but make it hidden
[window addSubview:table];
table.hidden = YES;
[window makeKeyAndVisible];
I am unable to get the UITableView to pop up on the press of my UIButton. Can anyone help me to sort it out?
One way to show the UITableView in the UIPopOverController is by creating a new UIViewController class. And invoking it in initWithContentViewController method of UIPopOverController.
1. Create a new UIViewController or UITableViewController class. Create an instance of it.
2. Use the instance in the initWithContentViewController method of UIPopOverController.
3. Mention from where it should "pop"
For Example in your Button action :
-(IBAction)yourButtonAction:(id)sender
{
YourNewViewController*newVC=[[YourNewViewController alloc]init];
UIPopoverController*somePopOver=[[UIPopoverController alloc]initWithContentViewController:catergoryVC]; //Tell which view controller should be shown
[somePopOver setPopoverContentSize:CGSizeMake(200, 200)]; // set content size of popover
[somePopOver presentPopoverFromRect:yourButton.frame inView:self.view permittedArrowDirections:UIPopoverArrowDirectionUp animated:YES]; //From where it should "pop"
}
It seems you want to present it from a UIBarButtonItem so instead of presentPopoverFromRect use presentPopoverFromBarButtonItem
[somePopOver presentPopoverFromBarButtonItem:yourBarButtonItem permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];
If you want to display popover on press of button click, then first add your button in viewcontroller, display that view controller as follows:
In app delegate write code:
MyViewController *viewController = [[MyViewController alloc] init];
[self.window addSubView:viewController.view];
In MyViewController add button and provide target to that button displayPopup as follows:
-(void)displayPopup:(id)sender
{
UITableViewController *tblViewPopover = [[UITableViewController alloc] init];
tblViewPopover.tableView.delegate = self;
tblViewPopover.tableView.dataSource = self;
tblViewPopover.tableView.backgroundColor = [UIColor whiteColor];
tblViewPopover.tableView.separatorStyle= UITableViewCellSeparatorStyleSingleLine;
float theWidth = 280;
tblViewPopover.contentSizeForViewInPopover = CGSizeMake(theWidth,200);
if(m_popOvrController){
[m_popOvrController dismissPopoverAnimated:NO];
[m_popOvrController release];
m_popOvrController=nil;
}
m_popOvrController = [[UIPopoverController alloc] initWithContentViewController:tblViewPopover];
[tblViewPopover release];
[m_popOvrController presentPopoverFromRect:sender.frame inView:self.view permittedArrowDirections:UIPopoverArrowDirectionAny animated:NO];
}
and you can use tableview delegate methods to display data in tableview.
I think, UIPopoverViewController is initialized using UIViewController and here you are using UIView(UITableView).
Can you please try using UITableViewController instead?
Also, if things does not work according to plan when you create it using the code try using an XIB explicitely.
This should help.
I want to use a UITabBarSystemItem for the icon of one of my tabBarItem's but I'm using storyboards. I'm not sure where to set it. If I set it in the view's viewDidLoad then it doesn't change until you push the button in the tabBar. Before that it's just the blue ? square.
And as far as I know, you can't use UITabBarSystemItems in IB inspector.
UPDATE:
Well first of all I'm an idiot. You can totally choose the icon in the IB Inspector.
Tab Bar Item -> Identifier -> Choose your icon.
But the question still remains how to do it programmatically. Or rather when/where?
When using storyboards, a view controller initializes using the initWithCoder constructor so you could override that function and set the system item icon there like so
- (id)initWithCoder:(NSCoder*)aDecoder
{
if(self = [super initWithCoder:aDecoder])
{
self.tabBarItem = [[UITabBarItem alloc] initWithTabBarSystemItem:UITabBarSystemItemFavorites tag:1];
}
return self;
}
Naturally, you can change the value of the system item to any of the values supported. Apple lists them here
Check this code for your problem: Its working in my app.
- (NSArray *) initializeViewControllers
{
NSArray *viewControllerArray = nil;
viewController1 = <View Init Code>
viewController2 = <View Init Code>
viewController3 = <View Init Code>
1stNavController = [[UINavigationController alloc] initWithRootViewController:viewController1];
UIImage *img = [UIImage imageNamed:#"tab_home"];
[1stNavController .tabBarItem initWithTitle:#"Home" image:img tag:1];
2ndNavController = [[UINavigationController alloc] initWithRootViewController:viewController2];
img = [UIImage imageNamed:#"tab_timeDrop"];
[2ndNavController .tabBarItem initWithTitle:#"Time Entry" image:img tag:2];
3rdNavController = [[UINavigationController alloc] initWithRootViewController:viewController3];
img = [UIImage imageNamed:#"tab_invoiceSummary"];
[3rdNavController.tabBarItem initWithTitle:#"Invoice Summary" image:img tag:3];
viewControllerArray = [NSArray arrayWithObjects:1stNavController,2ndEntryNavController,3rdReportNavController, nil];
return viewControllerArray;
}
This code is returning View Controllers with Images for their respective tabs. Here i used Navigation Controller inside the tabbar controller. you can also use view controller instead of navigation Controller.
Just add this code and initialize your tabbar controller as follows inside appdidfinishlaunching method:
tabbarController = [[UITabBarController alloc] init];
_tabbarController.viewControllers = [self initializeViewControllers];
self.window.rootViewController = tabbarController;
Hope it works.
Please reply.
Well that's quite simple!
For the where -> create a custom TabBarController (e.g. WBTabBarController).
In your StoryBoard explicitly set it.
For the how -> just overwrite viewDidLoad of the WBTabBarController and set your images for the TabBarItems. In the following example this was done using the NIKFontAwesomeIconFactory:
#import "WBTabBarController.h"
#import "NIKFontAwesomeIcon.h"
#import "NIKFontAwesomeIconFactory.h"
#import "NIKFontAwesomeIconFactory+iOS.h"
#interface WBTabBarController ()
#end
#implementation WBTabBarController
- (void)viewDidLoad
{
[super viewDidLoad];
NIKFontAwesomeIconFactory *factory = [NIKFontAwesomeIconFactory tabBarItemIconFactory];
UITabBarItem *item0 = self.tabBar.items[0];
item0.image = [factory createImageForIcon:NIKFontAwesomeIconApple];
UITabBarItem *item1 = self.tabBar.items[1];
item1.image = [factory createImageForIcon:NIKFontAwesomeIconStackOverflow];
}
#end
Assuming the initial scene of your storyboard is the tab bar view controller, you can access it in applicationDidFinishLaunching, it is the rootViewController of the app delegate's window. I don't know if you can swap in a system item if the bar item is already present, but you can definitely set the image and title.
I have looked at several tutorials and different posts and can't seem to figure this out. I am simply trying to create a back button to take me back to a view where I was before. In the IB I create the button and link it to my backButton method. However, when I try to use it in the App I can't get it to work. Do I have to push it on the stack first? Any suggestions?
-(void)backButton:(id)sender{
[self.navigationController popViewControllerAnimated:YES];
}
Here is the code where I navigate from one view into another: Map is a view I use.
- (void) buttonClicked:(id)sender
{
UIButton *selectedButton = (UIButton *)sender;
int tempButtonTag = selectedButton.tag;
Map *map =[[Map alloc] initWithNibName:nil bundle:nil];
NSMutableString *tempID = [buttonIDArray objectAtIndex:tempButtonTag];
NSMutableString *tempType = [buttonTypeArray objectAtIndex:tempButtonTag];
[map setXmlID:tempID];
[map setXmlType:tempType];
buttonIDArray = nil;
buttonTypeArray = nil;
[buttonIDArray release];
[buttonTypeArray release];
[self presentModalViewController:map animated:YES];
}
The opposite of presentModalViewController is dismissModalViewController.
The opposite of pushViewController is popViewController.
You are mixing these up...
Hi i am working on an application which has a login form and another view called as Invitation. Now heres my problem in my Login view on the hit of Login button i am coming to the Invitation View with the help of the code which looks like this
-(void)buttonPress
{
Invitation *obj = [[Invitation alloc]init];
[self.navigationController pushViewController:obj animated:YES];
}
Now in the Invitation view what happens is that i want a tabbar to be displayed so i wrote a code which looks like this
objTabbar = [[UITabBar alloc]init];
HomeItem = [[UITabBarItem alloc]initWithTitle:#"Home" image:[UIImage imageNamed:#"house.png"] tag:0];
BluetoothItem = [[UITabBarItem alloc]initWithTitle:#"Bluetooth" image:[UIImage imageNamed:#"bluetooth.png"] tag:1];
NSArray *a = [[NSArray alloc]initWithObjects:HomeItem,BluetoothItem,nil];
objTabbar.items = a;
and in the LoadView method i did this
- (void)loadView {
[super loadView];
self.navigationItem.hidesBackButton = YES;
[self.view addSubview:objTabbar];
}
Now the code is building successfully but the problem is that the Tabbar is not getting displayed. I tried tabbarController and did this
tabbarController.view = objTabbar;
and added the tabbarController in the loadView method
[self.view addSubview:tabbarController.view];
But still no success
Please help me out and let me know where am i going wrong
Thank You
i believe the reason why you are not getting is because you are using the wrong code. Here are few mistakes i would like to point out.
replace objTabbar = [[UITabBar alloc]init]; with
objTabbar = [[UITabBarController alloc]init];
Replace objTabbar.items = a; with
[objTabbar setViewControllers:a];
How do I set the default selected UITabBarItem in an UITabBar that is within an UIView, not an UITabBarController?
Just to clarify, the UIView does implement the protocol and the didSelectItem method works. At run-time, the tabbar works and the tabbaritems selected when the user touches them. My problem is setting the default selected item.
If i use [myTabbar setSelectedItem] within the didSelectItem method it works. But outside of it, it doesn't (for example, in the viewDidLoad method of my UIView).
Thanks!
Thank you for your approatch, but I still have a problem that the didSelectedItem is not called when I select the item with setSelectedItem. Any Idea?
actually, I did use it a little bit different:
[tabbar setSelectedItem:[tabbar.items objectAtIndex:0]];
finally I solved it this way....
- (void)viewDidLoad
{
UITabBarItem *item = [myTabBar.items objectAtIndex:0];
[self.myTabBar setSelectedItem:item];
if(tab1Exam == nil){
self.tab1Exam = [[CurExam alloc] initWithNibName:#"CurExam" bundle:nil];
[self.view insertSubview:tab1Exam.view belowSubview:myTabBar];
if (currentViewController != nil)
[currentViewController.view removeFromSuperview];
currentViewController = tab1Exam;
}
}
You might want to post some sample code. I just ran a quick test in -viewDidLoad:
UITabBarItem *about = [[UITabBarItem alloc] initWithTitle:#"About" image:[UIImage imageNamed:#"About.png"] tag:0];
NSArray *tabBarItems = [[NSArray alloc] initWithObjects:about,nil];
[tabBar setItems:tabBarItems animated:NO];
[tabBar setSelectedItem:about];
[tabBarItems release];
[about release];
which worked fine, or at least worked as I expected.