I am testing an application in IOS5 using OCUnit. Before posting my problem I read all the relevant posts here as much I could. It really helped. I am now facing the problem below ,which I tried to narrate as clearly as possible.
My application has a login screen which is nothing but a view controller say: initialController. The root controller of my app delegate is the Navigation controller. The property initWithRootViewController of the Navigation controller is set with this initialController.
Now after logging in , the application loads another controller and I want to do unit testing in that controller without having to go through this login process.
Post login, another controller say PostloginController gets loaded, this controller's Navigation item is customized with 2 button's say: button1 and button2.
These buttons are added as the subviews of UIBarButtonItem and this UIBarButtonItem is set as the rightBarButtonItem of the PostloginController.navigationItem.rightBarButtonItem.(pseudo code)
finally PostLoginController is pushed in the Navigation controller
navigationcontroller pushviewcontroller:postLoginController.(pseudo code)
I have to write unit test code which on button1's UIControlEventTouchUpInside should launch another controller say :Newcontroller.
Loading this new controller on button1's event complete one test case.
My problem is that I don't get the subview of UIBarButtonItem which should be 2 buttons. The log show me there is one controller in the Navigation Controller and only one subview. My code is as follows:
- (void)setUp
{
[super setUp];
// Set-up code here.
self.appDelegate = (MYAppDelegate*)[[UIApplication sharedApplication] delegate ];
self.navigationController = (UINavigationController *)self.appDelegate.window.rootViewController;
}
- (void)testAppDelegate
{
STAssertNotNil(self.appDelegate, #"Cannot find the application delegate");
NSArray *tempArray = [self.navigationController viewControllers];
NSLog(#"Number of controllers in navigationController = %i", [tempArray count]);
}
- (void) testButton1
{
//self.myController = (PostLoginController*)self.navigationController.topViewController;
UIBarButtonItem *barButtonItem = self.navigationController.topViewController.navigationItem.rightBarButtonItem;
UIView *customView = barButtonItem.customView;
NSArray *subviews1 = customView.subviews;
NSLog (# "Got subviews");
NSLog(#"Number of subviews = %i", [subviews1 count]);
if ([subviews1 count] == 0)
{
NSLog (# "no subviews");
}
for (UIView* view in subviews1)
{
NSLog(#"%#", view);
if([view isKindOfClass:[UIButton class]])
{
UIButton *btn = (UIButton*)view;
NSLog (# " UIButton parsed");
// Check if Button1 clicked.
NSData *data1=UIImagePNGRepresentation([btn backgroundImageForState:UIControlStateNormal]);
NSData *data2=UIImagePNGRepresentation([UIImage imageNamed:#"BUTTON1.png"]);
if([data1 isEqualToData:data2]) // CHECKING IF BUTTON1 OR BUTTON2 PRESSED BY IMAGE SINCE THEY DONT HAVE ANY TAGS SET.
{
[btn sendActionsForControlEvents:(UIControlEventTouchUpInside)];
STAssertTrue([self.navigationController.visibleViewController isMemberOfClass: [NewController class]], #" NewController failed to load!"); //BUTTON1 CLICK SHOULD LAUNCH NEWCONTROLLER - COMPLETES ONE TEST CASE.
}
}
}
}
Related
Possibly simple request here but I can't find the solution and it is bugging me for days.
I'm building simple options page where users could jump to desired page and I'm using UINavigationController instance to manage hierarchy. My storyboard looks like this:
Viewcontrollers are connected with push segues fired on next button, while I use [self.navigationController popViewControllerAnimated:YES] for previous button. If I connect, for instance, button labeled 2 on 5VC with 2VC through push segue, I get to the second page, but if I want to use previous button I will land to options page or 5VC which is something I don't want. Instead, I would like to be able to use previous button to go to first page, while on second page.
The way I see it, if I am on third page (3VC) and I call options page (5VC) and select button 3, system should stack 1VC-2VC and present 3VC, so I would be able to go to 2VC through [self.navigationController popViewControllerAnimated:YES] request.
I think the solution is somehow connected with setViewControllers:(NSArray *)viewControllers animated:(BOOL)animated, but I don't know the syntax how to make things work.
You have 3 cases
Back to one of ancestors in the middle with push
case 5VC=>2VC, 5VC=>3VC:
NSArray *vcs = self.navigationController.viewControllers;
for(NSInteger i = vcs.count - 2; i > 0; i--) {
// find the target and its parent view controller
// i.e. class of 2VC is ViewController2
if([vcs[i] isKindOfClass:[ViewController2 class]]) {
UIViewController *target = vcs[i];
UIViewController *parent = vcs[i - 1];
// pop to its parent view controller with NO animation
[self.navigationController popToViewController:parent animated:NO];
// push the target from its parent
[self.navigationController pushViewController:target animated:YES];
return;
}
}
Back to the root view controller with push
case 5VC=>1VC:
UIViewController *root = self.navigationController.viewControllers.firstObject;
// reset view controllers stack with self as root.
[self.navigationController setViewControllers:#[self] animated:NO];
// push target from self
[self.navigationController pushViewController:root animated:YES];
// reset navigation stack with target as root.
[self.navigationController setViewControllers:#[root] animated:NO];
Push new VC from one of ancestors
case 5VC=>4VC
NSArray *vcs = self.navigationController.viewControllers;
for(NSInteger i = vcs.count - 1; i >= 0; i--) {
// find the parent view controller
if([vcs[i] isKindOfClass:[ViewController3 class]]) {
UIViewController *parent = vcs[i];
// pop to the parent with NO animation
[self.navigationController popToViewController:parent animated:NO];
// perform segue from the parent
[parent performSegueWithIdentifier:#"push4VC" sender:self];
return;
}
}
On the particular your case(5VC=>4VC), you know 3VC is the self's parent, you can get the parent directly:
NSArray *vcs = self.navigationController.viewControllers;
UIViewController *parent = vcs[vcs.count - 2]; // [vcs.count-1] is self.
[self.navigationController popToViewController:parent animated:NO];
[parent performSegueWithIdentifier:#"push4VC" sender:self];
I have different xib files with NSViewController attached to them. (Screenshot below)
One of xib file called StartMenuViewController which has a button. I want to click that button and change the view to DetectingUSBViewController.(Screenshot below)
The IBAction of that button is in StartMenuViewController.m file.
And I use AppController.m to control my main xib view.(NSWindow + NSView) (Screenshot below)
When the application runs, I try to initialize the StartMenuViewController fist by doing the following thing in my AppController.m file.
-(void)awakeFromNib{
[self initialize];
}
-(void) initialize
{
#autoreleasepool {
//mainViewController is a NSViewController and _mainView is a NSView which connect with Custom View in main xib
self.mainViewController = [[[StartMenuViewController alloc]initWithNibName:StartMenuView bundle:nil]autorelease];
[_mainView addSubview:[_mainViewController view]];
}
}
It works fine and it will show the StartMenuViewController.xib on the window at first, but I do not know how to change the view after clicking the button(FIND USB DRIVE). I want the current view changes to DetectingUSBViewController.xib.
Simplest way possible, assuming you have tied your USB button properly in, do the following :
- (IBAction)usbButton:(UIButton *)sender {
DetectingUSBViewController *second = [[DetectingUSBViewController alloc] initWithNibName:#"DetectingUSBView" bundle:nil];
[self presentViewController:second animated:YES completion:nil];
}
load the DetectingUSBViewController in startMenuViewController as DetectingUSBViewController* v1 = [[ViewCont1 alloc] initWithNibName:#"ViewCont1" bundle:nil]; now add or replace the view as [v1 view] in view where you want to add/replace.
You need to hook up your button to send an IBAction
You need a 'View for DetectingUSBViewController.xib'
=> one way (iOS like) is to use a ViewController. Subclass NSViewController and then alloc init a DetectingUSBViewController
Add the view. Don't present the VC (as there is no such thing in OSX)
//button click action
- (IBAction)usbButton:(UIButton *)sender {
//! Retain the VC
Self.detectingUSBViewController = [[DetectingUSBViewController alloc] initWithNibName:#"DetectingUSBView" bundle:nil];
//add the view
[_mainView addSubview:[_detectingUSBViewController view]];
}
I present a modal view controller for various UI settings in an iOS app. One of those settings allows the user to select a different main view. When they hit "Done" I want to dismiss the modal view and have the newly-selected view controller appear, without a momentary delay where the old view controller segues to the new view controller. How could this be implemented?
Update:
Here is a method I successfully implemented using Eugene's technique, but without the app delegate. Instead, this implementation is specific to my scenario where a view controller in a navigation stack presents the modal view controller in a Utility app.
- (void)swapFrontSideViewController;
{
UINavigationController *navigationVC = (UINavigationController *)[self presentingViewController];
NSMutableArray *viewControllers = [NSMutableArray arrayWithArray:navigationVC.viewControllers];
UIViewControllerSubclass *selectedViewController = nil;
if ([self.selectedFrontSide isEqualToString:FRONT_SIDE_NAME1]) {
selectedViewController = [self.storyboard instantiateViewControllerWithIdentifier:FRONT_SIDE_NAME1];
} else if ([self.selectedFrontSide isEqualToString:FRONT_SIDE_NAME2]) {
selectedViewController = [self.storyboard instantiateViewControllerWithIdentifier:FRONT_SIDE_NAME2];
}
if (selectedViewController) {
[viewControllers replaceObjectAtIndex:viewControllers.count -1 withObject:selectedViewController];
[navigationVC setViewControllers:viewControllers];
self.delegate = selectedViewController;
} else {
NSLog(#"Error: Undefined Front Side Selected.");
}
}
- (IBAction)doDismiss:(id)sender {
AppDelegate *appDelegate = (AppDelegate *)[UIApplication sharedApplication].delegate; // Get the app delegate
NSMutableArray *viewControllers = [NSMutableArray arrayWithArray:appDelegate.navigationController.viewControllers]; // fetch its navigationController viewControllers stack
UIViewController *replacementController; //initialize replacement controller
[viewControllers replaceObjectAtIndex:viewControllers.count -1 withObject:replacementController]; // replace the top view controller in stack with the replacement one
[appDelegate.navigationController setViewControllers:viewControllers]; //change the stack
[self dismissModalViewControllerAnimated:YES];
}
I have an app with a tab bar controller (2 tabs). In one tab view controller, a button leads to an alert window. I want one button of the alert window to call a table view containing possible answers. I want that table view to have a done button and a title. I think that means a navigation controller has to be used. But most everything I can find on navigation controllers assumes a much more complicated situation. Here's part of the alert window logic:
-(void) alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
if (buttonIndex == 2) {
AnswersViewController *aVC = [[AnswersViewController alloc] init];
[self presentViewController:aVC
animated:YES
completion:NULL];
}
}
And AnswersViewController looks like this:
#interface AnswersViewController : UITableViewController
#end
#implementation AnswersViewController
- (id) init
{
self = [super initWithStyle:UITableViewStylePlain];
return self;
}
- (id) initWithStyle:(UITableViewStyle)style
{
return [self init];
}
- (void)viewDidLoad
{
[super viewDidLoad];
[[self view] setBackgroundColor:[UIColor redColor]];
}
#end
This code all works as expected (an empty red UITableView appears).
Two questions I guess: 1. Is there a simple modification to what I have that can give me a done button and title in my table view? 2. If I have to go to a navigation controller (probably), how can I make a bare-bones navigation controller with a done button and title and embed the table view within it? Oh, and I want to do this programatically. And I think I prefer the done button and title to be in the navigation bar, no tool bar desired. Thanks!
To get what you are looking for, you do need to use a UINavigationController. That will provide the UINavigationBar where you can display a title and also buttons.
To implement this with a UINavigationController, you want to do smoothing like this (assuming you are using ARC, so you don't need to worry about memory management):
-(void) alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
if (buttonIndex == 2) {
AnswersViewController *aVC = [[AnswersViewController alloc] init];
//Make our done button
//Target is this same class, tapping the button will call dismissAnswersViewController:
aVC.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:#selector(dismissAnswersViewController:)];
//Set the title of the view controller
aVC.title = #"Answers";
UINavigationController *aNavigationController = [[UINavigationController alloc] initWithRootViewController:aVC];
[self presentViewController:aNavigationController
animated:YES
completion:NULL];
}
}
Then you would also implement - (void)dismissAnswersViewController:(id)sender in the same class as the UIAlertView delegate method (based on the implementation I have here).
Hope this helps!
I would like to know what kind of trick to use for "not pushing" a view controller into the navigation controller stack (iOS)
I have this :
If user is not logged, show view A then show B
If user is logged, show B
As I am using the storyboard, I used a performSegue if the user is logged so he goes directly to B. But with this method, the Navigation Controller gets a push of view A in the stack.
I was thinking of poping out a level of the stack in some void (but I don't know how to do this).
I was also thinking of not pushing the view into the nav controller stack (but I don't know how to do this).
Thanks
Update :
I tried this :
//The view B
TabBarMain* mainViewController = [[TabBarMain alloc] init];
//If already logged in
if([username length] == 0)
{
NSArray *viewControllers = [NSArray arrayWithObject:mainViewController];
[self.navigationController setViewControllers:viewControllers animated:NO];
}
The problem of this code is that it shows me a black screen (doesn't crash). It seems that I need to init something and I have nothing in my TabBarMain.m, I don't know what to write in there. This TabBarMain is linked to the Tab Bar Controller of the Storyboard.
Is there no other way ?
Try this on for size in your rootViewController's viewDidLoad.
- (void)viewDidLoad
{
NSArray *viewControllers
if (logged) {
NSArray *viewControllers = [NSArray arrayWithObject:viewControllerB];
} else {
NSArray *viewControllers = [NSArray arrayWithObject:viewControllerA];
}
[self.navigationController setViewControllers:viewControllers animated:NO];
}
Since your viewController is linked in Storyboard and not instantiated in code you need to instantiate it from the storyboard not your empty code. Make sure the identifier matches the identifier for your ViewController in your storyboard.
TabBarMain *mainViewController = [[UIStoryboard storyboardWithName:#"MainStoryboard" bundle:NULL] instantiateViewControllerWithIdentifier:#"tabBarMain"];