ios navigation bar 's back button not responding in popover

Question

I'm maintaining an old code based on xib files. Everything worked fine, but recently, the back button of the navigation bar in a popover is no longer responding. I changed from using a UIPopoverController to presenting the navigation controller with UIModalPresentationPopover style but nothing changed. Here's what I'm doing:

navController = [[UINavigationController alloc] initWithRootViewController:instrusRootVC];
navController.modalPresentationStyle = UIModalPresentationPopover;
navController.preferredContentSize = CGSizeMake(400.0, 600.0);
navController.popoverPresentationController.sourceView = self.view;
navController.popoverPresentationController.sourceRect = sender.frame;
navController.popoverPresentationController.permittedArrowDirections = UIPopoverArrowDirectionUp;
navController.popoverPresentationController.delegate = self;

[self presentViewController:navController animated:YES completion:nil];

where instrusRootVC is a table view controller initialized with initWithNibName

in instrusRootVC, I then call

 [[self navigationController] pushViewController:secondVC animated:YES];

where secondVC is a new table view controller initialized with initWithNibName

Everything works fine except that the back button of the navigation bar does not respond.

(If I call

 [[self navigationController] popViewControllerAnimated:YES];

somewhere in secondVC, it works fine.)

What am I doing wrong?

The full code is too long to go in comments, so here it is:

UINavigationController *navController;

if (APPTYPE == kTypeMultiInstruWithLevel) {

    InstrusNamesVC *instrusRootVC = [[InstrusNamesVC alloc]
            initWithTabInstruTypeNames: myPartitionInfos.partTabInstruNames
                WithTabAllInstrusModel: myPartitionInfos.partTabInstrus
             WithTabAllAnnPartByInstru: tabAnnotationsPartitionByInstru];
    navController = [[UINavigationController alloc] initWithRootViewController:instrusRootVC];

} else {

    if ([myPartitionInfos.partTabInstrus count] > 1)
    {
        InstrusViewController *instrusRootVC = [[InstrusViewController alloc] initWithTabInstrusModel:myPartitionInfos.partTabInstrus WithTabAnnPartByInstru:tabAnnotationsPartitionByInstru];
        navController = [[UINavigationController alloc] initWithRootViewController:instrusRootVC];

    }
    // We only have one instru, we skip the instru selection step
    else
    {
        InstruPartitionVersionsVC *instrusRootVC = [[InstruPartitionVersionsVC alloc] initWithIndexInstru: 0
                WithTabAnnPartByInstru: tabAnnotationsPartitionByInstru];

        navController = [[UINavigationController alloc] initWithRootViewController:instrusRootVC];
    }
}

navController.modalPresentationStyle = UIModalPresentationPopover;
navController.preferredContentSize = CGSizeMake(400.0, 600.0);
navController.popoverPresentationController.sourceView = self.view;
navController.popoverPresentationController.sourceRect = sender.frame;
navController.popoverPresentationController.permittedArrowDirections = UIPopoverArrowDirectionUp;
navController.popoverPresentationController.delegate = self;

navController.navigationBar.translucent = NO;
navController.navigationBar.tintColor = SCROLL_COLOR_MMR;
if(APPDESIGN== kDesignPinkPanther){
    navController.navigationBar.barTintColor = [UIColor colorWithRed:240/255.0 green:138/255.0 blue:177/255.0 alpha:1.0];
    navController.popoverPresentationController.backgroundColor = [UIColor colorWithRed:240/255.0 green:138/255.0 blue:177/255.0 alpha:1.0];
} else if (APPDESIGN== kDesignCarmen){
    navController.navigationBar.barTintColor = [UIColor colorWithRed:193/255.0 green:38/255.0 blue:67/255.0 alpha:1.0];
    navController.popoverPresentationController.backgroundColor = [UIColor colorWithRed:193/255.0 green:38/255.0 blue:67/255.0 alpha:1.0];
}  else {
    navController.navigationBar.barTintColor = BROWN_COLOR_MMR;
    navController.popoverPresentationController.backgroundColor = BROWN_COLOR_MMR;
}

[self presentViewController:navController animated:YES completion:nil];

in instruViewController for example the code is as follow:

- (id)initWithTabInstrusModel: (NSArray *)pTabInstru
   WithTabAnnPartByInstru: (NSArray *)pTabAnn
 {
self = [super initWithNibName:@"InstrusViewController" bundle:[NSBundle mainBundle]];

if (self != nil)
{
    tabInstrusModel = pTabInstru;
    tabAnnPartByInstru = pTabAnn;
}

return self;
}

- (void)viewDidLoad
{
[super viewDidLoad];

// init properties
self.tabInstrusItems = [NSMutableArray array];

// Init tabInstruItems
for (int i = 0; i < [tabInstrusModel count]; i++)
{
    InstrumentPartitionModel *instruTMP = [tabInstrusModel objectAtIndex:i];
    [tabInstrusItems addObject:locStr(instruTMP.instruName)];
}

// let selection done before
self.clearsSelectionOnViewWillAppear = NO;

// set background custom
self.tableView.backgroundColor = [UIColor clearColor];
UIImage *backgroundImage = [UIImage imageNamed:@"bg_popup.png"];
UIImageView *backgroundImageView = [[UIImageView alloc]initWithImage:backgroundImage];
backgroundImageView.frame = self.tableView.frame;
self.tableView.backgroundView = backgroundImageView;

self.tableView.separatorColor = [UIColor clearColor];

self.tableView.rowHeight = 50.0;

// Set navigation bar title
UILabel *label = [[UILabel alloc] init];
[label formatAsTitlePopover:@""];
[self.navigationItem setTitleView:label];

then I experimented with 1) not specifying anything for self.navigationItem.backBarButtonItem 2) using this:

self.navigationItem.backBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"" style:UIBarButtonItemStylePlain target:self.navigationController  action:@selector(popViewControllerAnimated:)];

3) using this:

self.navigationItem.backBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"" style:UIBarButtonItemStylePlain target:nil  action:nil];

But this does not change anything (except that when I do not specify anything, the back button display "back"): the button remains inactive. I even tried to put

self.navigationItem.backBarButtonItem.enabled = YES;

without any success.

Then the didSelectRowAtIndexPath is as follows:

 - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
[(CustomUITableView *)tableView updateCellSelect : indexPath];

InstruPartitionVersionsVC *versionsVC = [[InstruPartitionVersionsVC alloc]
        initWithIndexInstru: indexPath.row
     WithTabAnnPartByInstru: tabAnnPartByInstru];

// In case of MultiInstruWithLevel, tabAnnPartByInstru only contains partitions for the selected instr type:
if (APPTYPE == kTypeMultiInstruWithLevel) {
    NSArray * tabAnnPartTMP = [tabAnnPartByInstru objectAtIndex:indexPath.row];
    AnnotationsPartitionModel *annPartTMP = [tabAnnPartTMP objectAtIndex:0];
    versionsVC.indexGlobal = annPartTMP.annPartInstruDisplay;
} else {
    versionsVC.indexGlobal = indexPath.row;
}

// Display new Controller
[[self navigationController] pushViewController:versionsVC animated:YES];
 }

And so on for the next TableViewControllers...

I checked that all table views controller put on the stack have the same size.

Now, I really do not know what I could check....

kindly go through this link - http://stackoverflow.com/questions/25319179/uipopoverpresentationcontroller-on-ios-8-iphone — user3182143, Mar 02 '16 at 13:24
Yes, the back button is visible but inactive. Here is the full code: — Lise, Mar 02 '16 at 22:56
I have edited my first post with the full code and an explanation of what I tried. — Lise, Mar 02 '16 at 23:18
It seems to me that I'm doing what is described in the link you gave me. The app is intended to run only on iPad, so I do not have to worry about how it runs on iPhone. — Lise, Mar 02 '16 at 23:20

score 0 · Answer 1 · answered Mar 07 '16 at 22:20

I still do not understand why the default back button suddenly stopped responding but I found a turn-around using the left bar button that works fine and I'd like to share it.

What I did is adding the following lines in the viewDidLoad method of each viewController intended to be pushed by the navigation controller presented as a popOver:

 if (self != [self.navigationController.viewControllers objectAtIndex:0])
{
    self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc]
                                initWithImage:[UIImage imageNamed:@"ico_back_popover.png"]
                                        style:UIBarButtonItemStylePlain
                                       target:self
                                       action:@selector(leftBtnPressed:)];
}

where leftBtnPressed is as follows:

-(IBAction)leftBtnPressed:(id)sender
{
  [self.navigationController popViewControllerAnimated:YES];
}

ios navigation bar 's back button not responding in popover

1 Answers1