Hi there I am currently testing how to develop an application that has several tableviews with their own parent/child structures that are accessed from a main menu.
I would like to know how to generate the new tableview with the uinavigationcontroller menu but a shared uitabbar as this is the first time I have tried anything like this normally I just stick with apples templates.
Here is a general acitecture of what I am wanting to achieve, any comments suggestions code example would be greatly appreciated and from there I can work through it myself, its more of a question as to where the heck do I start :)
So far I have the main window set up with a UIAction catching the different button clicks, I need to figure out how to allow all children to share the specific UITabbar and then how to set up so that individual branches have their own UINavigationController menu if needed.
this is my UIAction
//Delegate.m
//--- Caputer button clicks ---
- (IBAction)buttonClick: (UIButton *) sender
{
if ([sender isEqual:orangeButton]) {
NSLog(#"orangeButton Pressed");
}
else if ([sender isEqual:blueButton]) {
NSLog(#"blueButton Pressed");
}
else if ([sender isEqual:greenButton]) {
NSLog(#"greenButton Pressed");
}
else if ([sender isEqual:purpuleButton]) {
NSLog(#"purpleButton Pressed");
}
}
If you created a "TabBar based application", then adding the navigationController for the desired tab is pretty easy. Drag the "UINavigationController" inside the "Tab Bar Controller" in the Main Window:
As to "How to generate tableViews", the simplest way, is to create a generic TableView, call it LevelTableView.h/.m file (and it could have its own .xib), where you can add whatever you wish, and then, keep creating new ViewControllers, for instance, in a level of this tableView:
- (void)tableView:(UITableView*)tableView didSelectRowAtIndexPath:(NSIndexPath*)indexPath
{
LevelTableView *anotherLevel = [[LevelTableView alloc] initWith...];
[self.navigationController pushViewController:anotherLevel animated:YES];
[anotherLevel release];
}
The point is, that this "LevelTableView" is created once, but instantiated various time for each level you want to add, the content is the only thing that changes.
I have exactly something like that. What I do is that I created a different class which I call "TabBarController" and where I initialize all the different views that are going to my tabs:
UIViewController *viewController1 = [[FirstTab alloc] initWithNibName:#"FirstTab" bundle:NSBundle.mainBundle];
UINavigationController *firstNavController = [[UINavigationController alloc]initWithRootViewController:viewController1];
UIViewController *viewController2 = [[SecondTab alloc] initWithNibName:#"SecondTab" bundle:NSBundle.mainBundle];
UINavigationController *secondNavController = [[UINavigationController alloc]initWithRootViewController:viewController2];
myTabBarController = [[UITabBarController alloc] init];
myTabBarController.viewControllers = [NSArray arrayWithObjects:firstNavController, secondNavController, nil];
Then when the user clicks on one of the buttons in the main view this is what I do:
- (IBAction)yourAction:(id)sender {
TabBarController *tabBarController1 = [[TabBarController alloc] init];
tabController.selectedIndex = 1; ==> chose which tab you want to show
[[[UIApplication sharedApplication]delegate].window setRootViewController:tabBarController1.myTabBarController];
}
Does the job pretty nicely.
Add the Navigation Controllers into the tabbar controller. Then Hide the NavigationController and according to your schema use toolbars to pop and navigate your views.
Related
I have seen a bunch of topics where multiple ViewControllers go to one single ViewController, but not the opposite.
I am making a game where you select a game from Game_select.m and it needs to go out to one of 6 View Controllers. I've tried using storyboard and hardcoding it but neither have worked for me.
I have already imported Game1.h and Game2.h into Game_select.m.
When I run my code it always goes to Game1 ViewController.
This is code I am trying:
if(getGame1) {
//go to game1
Game1 *game1 = [[Game1 alloc] init];
[self.navigationController pushViewController:game1 animated:YES];
}
if(getGame2) {
//go to game2
Game2 *game2 = [[Game2 alloc] init];
[self.navigationController pushViewController:game2 animated:YES];
}
Thanks for the help in advanced.
Cheers.
Personally I wouldn't use navigation controllers for this case. Make all of your viewControllers subclasses of (the normal) UIViewController, then use this code to present one of your viewControllers:
Note that this code will only work if you are setting up your view programatically or if using xib's (not storyboard) then this will also work if you use initWithNibName: bundle: instead of using init
if(getGame1) {
//go to game1
Game1 *game1 = [[Game1 alloc] init];
[self presentViewController:game1 animated:YES completion:nil];
}
if(getGame2) {
//go to game2
Game2 *game2 = [[Game2 alloc] init];
[self presentViewController:game2 animated:YES completion:nil];
}
Create manual segues from your main viewController to the other viewControllers. First, click on the viewController that you want to be displayed. Make sure you have the viewController itself selected, not one of the views:
Then click on the segues tab (on the far right) and drag from the "Manual Segue" circle to the viewController you want to segue from.
Then click on the segues and give them different names in the tab like this:
Then, in your code, you will have a line like this:
[self performSegueWithIdentifier:#"showAlternate" sender:nil];
You would use that to show the viewController for the "showAlternate" identifier. You will have multiple segues with identifiers like "Game1" and Game2".
Double check that getGame1 and getGame2 are BOOL values and not some sort of object that will evaluate to YES if its non-nil. I have made this mistake many times:
NSNumber* booleanValue = #NO;
if (booleanValue) {
// this code will run
}
if ([booleanValue boolValue]) {
// this code will not run - as expected
}
Seriously, I've made this mistake tons of times.
So I have an interesting design question regarding an app I'm developing for the iPhone. I am creating an app that manipulates images, and there are different types of manipulations that can be performed. So the user opens the app, and selects what type of manipulation they want to perform, and are taken through a step by step process to perform the manipulation.
A lot of the manipulations are similar, so code can be reused here. So instead of creating a view controller for each window of each manipulation, I decided to create one view and one view controller. The view contains the steps of each image manipulation, and each time it is incremented to the next step, it reorganizes itself appropriately. The view controller is controlled by a navigation controller, and each time the user advances to the next step of whatever image manipulation they're trying to perform (ie pushed a new view controller on the stack), I make a copy of my view object, set it to reorganize its components to the appropriate step, then send it to the new view controller which will display it.
So my question is this, for some stages of the manipulations, I need to add some buttons to a universal toolbar that is attached to view controller (since this is a modal view, this tool bar will have a home button that will enable the user to exit back to the main screen). Basically, I have a couple of questions on how I should approach this:
1) Should I simply add the toolbar to the view that I'm using, instead of the view controller. If so, how would I have the home button on the toolbar exit the modal view?
2) Should I keep the toolbar on the view controller, and have my view return a set of buttons to be added to it when the view loads? Then I guess I would have to list all of my action methods in my view controller?
3) Should I keep the toolbar on the view controller, but send a pointer from the toolbar to my view object, then add the buttons within my view class? Would I be able to add my action methods in my view class then?
Anyhow, sorry if this is complicated, and if you have any follow up questions please let me know.
1) Ok.
For dismissing, does your view have a pointer to the view controller? How about something like this:
[self.viewController.parentViewController dismissModalViewControllerAnimated:YES];
Not sure if I understand exactly how your hierarchy is organized. That's just my guess.
2) That seems kludgy to me. You'd have to define some sort of data structure that describes what the view wants in a button, make a list of them. The view controller has to request that list, go through them.
3) That seems like the best option. But I wouldn't have your view directly add subviews to the toolbar. Create a ToolbarView custom view. Give it some kind of addButton method, with parameters that describe what essential attributes you want the button to have, like title and the target and action maybe. Let the ToolbarView decide what it looks like, where it's positioned, etc.
Can your action methods go on your view class? Yeah I guess, but they shouldn't. The recommended iPhone design pattern is that views shouldn't do anything, they should just show things. Methods that do things should be on view controllers, even if the only thing they do is change what views are being shown.
I finally came up with a solution for this. What I did was create a universal view controller called UIMainViewController that obviously inherits from UIViewController. I implement the toolbar like follows:
- (void) viewDidLoad
{
[super viewDidLoad];
[self assembleToolbarButtons];
[[self navigationController] setToolbarHidden:NO];
[self setToolbarItems: toolbarButtons];
[[[self navigationController] toolbar]setBarStyle:UIBarStyleBlack];
}
- (void) assembleToolbarButtons
{
NSMutableArray *toolbarButtonsTemp = [[NSMutableArray alloc] init];
[self setToolbarButtons: toolbarButtonsTemp];
[toolbarButtonsTemp release];
if ([self mode] == UIMainViewControllerMainMode)
{
UIBarButtonItem *createAPictureButton = [[UIBarButtonItem alloc] initWithTitle:#"Create" style: UIBarButtonItemStyleBordered target:self action:#selector(loadCreateAPictureModalViewController)];
UIBarButtonItem *accountButton = [[UIBarButtonItem alloc] initWithTitle:#"Account" style: UIBarButtonItemStyleBordered target:self action:#selector(loadAccountModalViewController)];
UIBarButtonItem *helpButton = [[UIBarButtonItem alloc] initWithTitle:#"Help" style: UIBarButtonItemStyleBordered target:self action:#selector(loadHelpModalViewController)];
[[self toolbarButtons] addObject: createAPictureButton];
[[self toolbarButtons] addObject: accountButton];
[[self toolbarButtons] addObject: helpButton];
[createACaptionButton release];
[accountButton release];
[helpButton release];
}
else
{
UIBarButtonItem *homeButton = [[UIBarButtonItem alloc] initWithTitle:#"Home" style: UIBarButtonItemStyleBordered target:self action:#selector(exitModalViewController)];
[[self toolbarButtons] addObject: homeButton];
[homeButton release];
}
}
-(void) loadCreateAPictureModalViewController
{
CreateAPictureViewController *createAPictureViewController = [[CreateAPictureViewController alloc] initWithMode:UIMainTableViewControllerModeModal];
UINavigationController *createAPictureNavController = [[UINavigationController alloc] initWithRootViewController: createAPictureViewController];
[[createAPictureNavController navigationBar] setBarStyle:UIBarStyleBlack];
[self presentModalViewController:createAPictureNavController animated:YES];
[createAPictureNavController release];
[createAPictureViewController release];
}
-(void) loadAccountModalViewController
{
AccountViewController *accountViewController = [[AccountViewController alloc] initWithMode:UICaptionDistractionTableViewControllerModeModal];
UINavigationController *accountNavController = [[UINavigationController alloc] initWithRootViewController: accountViewController];
[[accountNavController navigationBar] setBarStyle:UIBarStyleBlack];
[self presentModalViewController: accountNavController animated:YES];
[accountNavController release];
[accountViewController release];
}
-(void) loadHelpModalViewController
{
HelpViewController *helpViewController = [[HelpViewController alloc] initWithMode:UICaptionDistractionTableViewControllerModeModal];
UINavigationController *helpNavController = [[UINavigationController alloc] initWithRootViewController: helpViewController];
[[helpNavController navigationBar] setBarStyle:UIBarStyleBlack];
[self presentModalViewController: helpNavController animated:YES];
[helpNavController release];
[helpViewController release];
}
-(void) exitModalViewController
{
[self dismissModalViewControllerAnimated:YES];
}
So for my app, on each viewcontroller it will have a toolbar at the bottom that have the basic buttons for creating a picture, accessing the account, or accessing help. If one of these buttons is accessed, it will launch a modal view which will have the home button to exit the modal view (when the UIMainViewController is created, one of it's parameters tells it which mode it is in, and thus which toolbar buttons to add.
But the main thing is I created a class mutablearray varialbe to store the toolbar buttons and then the buttons are created in "assembleToolbarButtons". Now any class that inherits from UIMainViewController can override the assembleToolbarButtons in order to add it's own buttons on top of the main ones that have already been added.
As far as what I mentioned initially in using one UIView and having it reorganize itself, and only one uiviewcontroller, I avoided this and instead just created separate view controllers for each step and separate views so as to adhere to MVC more.
I have a root view controller which has few buttons. On click of these button, I shown up a tab bar controller with each controller showing the table view controller. I have achieved this. So basically, for each table view controller I have a dedicated class. To go ahead, I replaced the tab bar controller, and added the segmented controller to the navigation title view.
The question is how can I set the view based on the selected index. I am able to set the navigation title to be segmented control but on select I am unable to set the view.
Below is what i have achieved so far.
Note: What matters is a running code, I would do that code optimization later on. I dont want to hidde views. I want to call different view controller class.
RootViewController class (on click of the button, i call the first view controller. So that I can set the segment controller:
-(IBAction) pushSegmentController: (id) sender
{
NSLog(#"My Location Button being clicked/touched") ;
FirstViewController *firstViewController = [[FirstViewController alloc] init] ;
[self.navigationController pushViewController:firstViewController animated:YES];
// Releae the view controllers
[firstViewController release];
}
IN FirstViewController class:
-(void)viewDidLoad {
[super viewDidLoad];
NSArray *viewControllers = [self segmentViewControllers];
self.segmentedControl = [[UISegmentedControl alloc] initWithItems:[NSArray arrayWithObjects:#"Table1", #"Table2"]];
self.navigationItem.titleView = segmentedControl;
[self.segmentedControl addTarget:self
action:#selector(indexDidChangeForSegmentedControl:)
forControlEvents:UIControlEventValueChanged];
self.segmentedControl.selectedSegmentIndex = 0;
}
-(void)indexDidChangeForSegmentedControl:(UISegmentedControl *)aSegmentedControl {
NSUInteger index = aSegmentedControl.selectedSegmentIndex;
if(index ==0) {
UIViewController *table1Controller = [[AustraliaViewController alloc] initWithStyle:UITableViewStylePlain];
**???? HOW SHOULD I SET THE VIEW OVER HERE... AS ITS A PART OF THE NAVIGATION CONTROLLER**
}
else { }
}
Note: I have tried using this option:
[navigationController setViewControllers:theViewControllers animated:NO];
But this option doesnt give me the right result. How should I go ahead with the same as I want to call a view controller class and set its view based on the selected index.
You probably don't want to have one view controller with different views depending on the button index, especially since you already have view controllers for your different screens.
If you want the table view controller to be pushed onto your navigation controller, so it will have a back button that gets you back to FirstViewController, use
-(void)indexDidChangeForSegmentedControl:(UISegmentedControl *)aSegmentedControl {
NSUInteger index = aSegmentedControl.selectedSegmentIndex;
UIViewController *newViewController = nil;
if(index ==0) {
newViewController = [[AustraliaViewController alloc] initWithStyle:UITableViewStylePlain];
} else {
newViewController = [[YourOtherViewController alloc] initWithStyle:UITableViewStylePlain];
}
[self.navigationController pushViewController:newViewController animated:YES];
}
If you'd rather have it slide in from the bottom and you want to handle setting up all necessary user interface (e.g. a dismiss button), replace that last line with
[self presentModalViewController:newViewController animated:YES];
What about?
self.view = table1Controller;
or
[self.view addSubview:table1Controller];
I just saw one more mistake you have done. You are allocating a UIViewController, but initializing it like a tableViewController(with initWithStyle).
If it's a subclass of UITableViewController, alloc it with that, not UIViewController.
I am working on navigation based application in which i can navigate to many views starting from default UITableView which is starting view in application template.
I have added another UIView and added tableView control on that UIView.
I am calling that view form one of the many views on a button click. Its showing the view but not populating the data in the table. And I also want to handle the event when user taps on the cell of the table of that view. Below is the Code I am using on button click:
if(self.lstView == nil)
{
ListViewController *viewController = [[ListViewController alloc] initWithNibName:#"ListViewController" bundle:nil];
self.lstView = viewController;
[viewController release];
}
[self.navigationController pushViewController:lstView animated:YES];
self.lstView.title = #"Select";//#"System";
[self.lstView.tblList.dataSource fillList];
Below is the fillList function code:
-(NSArray *)fillList
{
NSArray *tempArray = [[[NSArray alloc] initWithObjects:#"Item 1" , #"Item 2" , nil]autorelease];
return tempArray;
}
I am pretty new in Iphone programming and don't have much understanding.
Helping with detailed description and code will be highly appreciated.
Thanks.
try setting tableviews datasource and delegate property
tblList.dataSource=self;
tblList.delegate=self;
Rest of the work you have to do in delegate methods of the table view..
I am very new to Obj-C and learning iphone development.
My question is how to add subview from app delegate.
Lets say I added subview called "MainView" from "applicationDidFinishLaunching" method.
- (void)applicationDidFinishLaunching:(UIApplication *)application {
MainViewController *aViewController = [[MainViewController alloc] initWithNibName:#"MainView" bundle:nil];
self.mainViewController = aViewController;
[aViewController release];
[window addSubview:mainViewController.view];
// Override point for customization after application launch
[window makeKeyAndVisible];
}
"MainView.xib" file has a button to show its child view. When the button is clicked, it calls "showChildView" method.
- (IBAction)showChildView:(id)sender {
if (self.childViewController == nil) {
ChildViewController *childController = [[ChildViewController alloc] initWithNibName:#"ChildView" bundle:nil];
self.childViewController = childController;
[childController release];
}
[self.view insertSubview:childViewController.view atIndex:0];
}
From this code, when app launches, it shows "MainView" with a button. But when I clicked the button, the button is still visible as well as the content from the "ChildView.xib" file too.
How can I hide the "MainView" when I pressed the button and show only the contents of the "ChildView"?
Thanks for your help in advance.
well, you have to remove the original view first, before inserting the new subview, do it this way
- (IBAction)showChildView:(id)sender {
if (self.childViewController == nil) {
ChildViewController *childController = [[ChildViewController alloc] initWithNibName:#"ChildView" bundle:nil];
self.childViewController = childController;
[childController release];
}
[self.mainViewControlle.view removeFromSuperView];
[self.view insertSubview:childViewController.view atIndex:0];
}
Hope this helps.
You might want to check out the Utility App sample -- it demonstrates switching between two views with animation and adding/removing views from parent views.
you might want to create a navigation controller in the main view and than push the childviewcontroller onto it when invoking showChildView. You'll get the back navigation button for free that way