I have this appearance related code that was working fine in iOS 5:
-(void)customizeBackButton:(UIBarButtonItem*)backButtonItem {;
[backButtonItem setBackgroundImage:[UIImage imageNamed:#"backbuttonitem"] forState:UIControlStateNormal barMetrics:UIBarMetricsDefault];
}
This method is called within viewDidLoad in normal UIViewController.
Backbutton is a connected IBOutlet of a UIBarButtonItem, placed in a UIToolbar, and I am correctly seeing it when debugging. The point is that I can change tint and other appearances, but not the background images.
The code is working fine in iPhone (it's a universal app), and was working fine in iPad+iOS 5.
Am I doing something wrong or is there some kind of bug about UIBarButtonItem ?
This code is used everywhere in my app, because I have replaced default UINavigationBar back button to a normal UIBarButtonItem, because I needed to call some checking action before popping the controller.
Try using the new API [UINavigationBar backIndicatorImage:backIndicatorImage].
It's documented here.
Related
Using XCode Version 9.4.1 (9F2000) I would like to dynamically allow the user to change the theme of a Mac app from Light to Dark etc, but I'm falling at the first hurdle.
I tried putting the following code in both applicationDidFinishLaunching and ViewController's viewDidLoad methods, but neither caused the theme to change to Dark theme.
NSAppearance* appearance = [NSAppearance appearanceNamed:NSAppearanceNameVibrantDark];
[self.window setAppearance:appearance];
I was unable to find an Apple sample showing how to do this programmatically. Can anyone point out what I've overlooked??
D.
I was able to get it to work by moving my code to the controller's viewWillAppear (as per sample below). Then everything is themed correctly!
- (void)viewWillAppear {
[super viewWillAppear];
NSAppearance* appearance = [NSAppearance appearanceNamed:NSAppearanceNameVibrantDark];
[self.view.window setAppearance:appearance];
}
I've used this code to force an orientation change back to portrait when the user is finished watching the video (it allows viewing in landscape mode), before popping the video view controller off the navigation controller:
//set statusbar to the desired rotation position
[[UIApplication sharedApplication] setStatusBarOrientation:UIDeviceOrientationPortrait animated:NO];
//present/dismiss viewcontroller in order to activate rotating.
UIViewController *mVC = [[[UIViewController alloc] init] autorelease];
[self presentModalViewController:mVC animated:NO];
[self dismissModalViewControllerAnimated:NO];
[[UIApplication sharedApplication] setStatusBarHidden:NO withAnimation:UIStatusBarAnimationNone];
This worked perfectly until iOS 5.1.1. I've even tried to use the new present/dismiss methods after reading in another post that those should be used now:
[self presentViewController:mVC animated:NO completion:NULL];
[self dismissViewControllerAnimated:NO completion:NULL];
The problem is it doesn't work at all. After I rotated the video viewer to landscape and then pop it, my settings view (table view controller) comes back, but also in landscape mode.
I've even tried the tip from Here
"The setStatusBarOrientation:animated: method is not deprecated outright. However it now works only if the supportedInterfaceOrientations method of the topmost full screen view controller returns 0. This puts the responsibility of ensuring that the status bar orientation is consistent into the hands of the caller."
So I've experimented with setting a flag to force supportedInterfaceOrientations to return 0 (before calling the first code block above) but it doesn't work either.
Does anybody have a solution for this?
Thanks for your time and effort.
setStatusBarOrientation method has changed behaviour a bit. According to Apple documentation:
The setStatusBarOrientation:animated: method is not deprecated
outright. It now works only if the supportedInterfaceOrientations
method of the top-most full-screen view controller returns 0
Your root view controller should answer false to the method shouldAutorotate in order that your app responds to setStatusBarOrientation:animated
From Apple Documentation: "if your application has rotatable window content, however, you should not arbitrarily set status-bar orientation using this method"
To understand that, put a breakpoint in the shouldAutorotate method and you will see that it is called juste after setting the status bar orientation.
Here is how I fixed.
https://stackoverflow.com/a/14530123/1901733
The current question is linked with the question from the url above.
The statusBarOrientation is a real problem in ios6.
In an alert view method I implemented the following (pretty standard) piece of code for popping a modal view:
else if (buttonIndex == 1) {
EmergencyPlanViewController *emergencyPlanView = [[[EmergencyPlanViewController alloc] init] autorelease];
[emergencyPlanView setModalTransitionStyle:UIModalTransitionStyleFlipHorizontal];
[self presentModalViewController:emergencyPlanView animated:YES];
}
Somehow it gives me a black screen as result. I can't find what is wrong here.
I created the window in my MainStoryBoard and customized the class of the viewcontroller in IB to EmergencyPlanViewController.
The viewDidLoad method of the emergencyPlanView is triggered but it looks like the view is not loaded. Anyone an idea what's wrong here?
EDIT:
To be clear, I am not using seperate xib-files in my project. I only use the storyboard
In the xib file, is your UIView set to the File Owner's view. That is probably the problem. Also if you just apply init, that will load the EmergencyPlanViewControllerinterface builder file with the same name:
EmergencyPlanViewController.xib
So make sure in that case that either:
The EmergencyPlanViewController nib is indeed: EmergencyPlanViewController.xib
or that you write instead of init: initWithNibName://whatever nib name here
I managed to fix the black screen issue when presenting a modal view controller by setting a background color to the view in Interface Builder. I noticed that by default the background color of the view is set to something like black/white (see picture attached), although it appears in white. I don't know exactly what does this mean or how it is responsible for showing a black screen, but setting a single color or texture fixed it. PS: I've faced this when migrating from iOS SDK 5 to 6.
ios6
Try this:-
EmergencyPlanViewController *emergencyPlanView=[[EmergencyPlanViewController alloc] initWithNibName:#"EmergencyPlanViewController" bundle:nil];
emergencyPlanView.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
[self.navigationController presentModalViewController:emergencyPlanView animated:YES];
For testing purposes I wrote two apps:
First one plays an MP3 file using UIDocumentInteractionController
Second one does nothing but registers for the file type "public.mp3"
If I deploy the apps to the iPhone Simulator, my MP3 player app shows a button on top "Open in 'MP3Test'". If I deploy to the iPad Simulator however, there is no button and no "Open In" menu either.
This has been tested with iOS5.
Can somebody explain if this is a bug or a feature and what the reason is behind it?
Depends upon where you are presenting it from.
If you are presenting it from somewhere around the middle of the screen or below, just present from the frame of the object that you are presenting from.
if that is on the navigation bar, try this:
NSString *fileToOpen = [[NSBundle mainBundle] pathForResource:#"License" ofType:#"pdf"];
UIDocumentInteractionController *controller = [UIDocumentInteractionController interactionControllerWithURL:[NSURL fileURLWithPath:fileToOpen]];
controller.delegate = self;
CGRect navRect = self.navigationController.navigationBar.frame;
navRect.size = CGSizeMake(1500.0f, 40.0f);
[controller presentOptionsMenuFromRect:navRect inView:self.view animated:YES];
The iPad has an affinity for popovers (see UIPopover), why it presents UIActionSheets in them. Facing a similar issue that you had, I had my UIDocumentInteractionController present itself from an UIBarButtonItem (resulting in a UIPopover presentation), rather than from the view itself (something that worked just fine on the iPhone):
Save a reference to the action button (I have mine in my navigation bar).
Use PresentOpenInMenu using the action button reference, rather than the View reference, resulting in a UIPopover-presentation.
Please note that the change does not effect the iPhone app - it behaves likes before, i.e. opens the OpenInMenu from the bottom of the screen just as it would, if you'd used the View reference to present it.
On iPad UIDocumentInteractionController appearing like Pop Up Try something like this
-(void)shareClick:(UIButton*)sender {
/*some code*/
CGRect rectFor appearing = [sender.superview convertRect:sender.frame toView:self.view];
[interactionController presentOptionsMenuFromRect:rect inView:self.view animated:YES];
}
I want to use addSubview method to add new view on my screen. However, new view must also include navigation bar etc. which means it should include entire screen. What should i do?
Whenever i try to addSubview it always shows new view under navigation bar.
I don't want to use pushViewController or presentModelViewController because new added view will be low opacity and i can see background but i do not want to interact with background objects like bar buttons table etc.
Sorry for english, i hope, i clearly told what problem is.
Just set the frame property of the view you add before, and set it with screen bounds.
[myView setFrame:[[UIScreen mainScreen] bounds];
[self.navigationController.view addSubview:myView];
If you want to disable interaction with the navigation bar :
[self.navigationController.navigationBar setUserInteractionEnabled:NO];
You could take a look at adding another UIWindow above your root window.
when I tried doing the navigationController.view addSubview, it wouldn't cover my tab bar so I did the following with my app delegate's window:
[self.window addSubview:myView];
if you need access to your appDelegate from another class, you'd just import your application delegate and call it from that.