Please help me to find out the reason why crash.I known had many question with the same title but with I cannot find out solution for my problem. My problem is my app crash(Bad Access) with ios7, with old version it work ok. This is my code:
- (void)updateLine:(NSNotification*)notification
{
BOOL registered =[(notification.userInfo)[kRADialePushViewNotificationRegistration] boolValue];
if (!registered) {
if (self.navigationController) {// it crash this line
[self.navigationController popViewControllerAnimated:YES];
}
}
}
I find out the problem here is: self.navigationController is nil. But I don't know why ios7 don't accept for access a nil navigationController while I can do it on ios6 or older. My solution is check if the view is current view (it's my DND view), I call popViewController, because if the view is current view you can get self.navigationController which have value not nil.My code is:
- (void)updateLine:(NSNotification*)notification
{
BOOL registered =[(notification.userInfo)[kRADialePushViewNotificationRegistration] boolValue];
if (!registered) {
if (self.isloaded && self.view.window){
if (self.navigationController) {
[self.navigationController popViewControllerAnimated:YES];
}
}
}
}
Related
I've just upgraded to XCode 5 and iOS 7. I've read all the suggestions I can find, but still getting the status bar appearing over the top of my apps.
I've tried setting View controller-based status bar appearance to NO in my plist:
I've tried adding:
- (void)viewDidLoad
{
// …
if ([self respondsToSelector:#selector(setNeedsStatusBarAppearanceUpdate)]) {
// iOS 7
[self prefersStatusBarHidden];
[self performSelector:#selector(setNeedsStatusBarAppearanceUpdate)];
} else {
// iOS 6
[[UIApplication sharedApplication] setStatusBarHidden:YES withAnimation:UIStatusBarAnimationSlide];
}
// …
}
- (BOOL)prefersStatusBarHidden
{
return YES;
}
to my root view controller.
I don't know what else to try. Am I missing something obvious?
UPDATE
I've found that the status bar is only present on a couple of targets, while other targets running the same code don't have the status bar. I've checked all their plists... The only difference with the ones showing the status bar are that they display an advert bar at the top of the screen... I wonder if this could have something to do with it?
Use - (BOOL)prefersStatusBarHidden
{
return YES;
} in all of your view controllers. Good Luck!
In application .plist add this key:
UIViewControllerBasedStatusBarAppearance and set it "NO"
I ended up deleting the plist file and copying one from another target that did work, and then changing the necessary values. The lists were identical, however this appeared to fix it. I had already tried clean building, reseting the simulator etc, so I guess it was a bug in the plist/xcode.
Try to add the next code in your root view controller:
- (BOOL)prefersStatusBarHidden { return YES; }
Less hacky solution is to insert
[application setStatusBarHidden:YES]
in AppDelegate.m in method
- (BOOL) application(UIApplication *)application didFinishLaunchingWithOptions:(NSDirectory *)launchOptions
like Dipen Panchasara
his: [UIApplication sharedApplication] delivers exact the application given in the methodcall.
Because changing a method to allways return YES feels not right
I am getting REALLY frustrated!!
I have tried every living possibility to get rid of the UIStatusBar at the top of my app...
I have tried:
Setting Status Bar to "None" in IB
Running [[UIApplication sharedApplication] setStatusBarHidden:YES]; on application launch AND in each scene.
Going to the .plist and changing the value for Status Bar Hidden at Startup: YES
Setting that same value on the home page for the target
Setting - (BOOL)prefersStatusBarHidden
{
return YES;
} in the app delegate
Literally none of this works... It still shows up on all of my views, and it is SUPER frustrating
Thanks again :)
Side note: I'm in xcode 5, developer beta iOS 7 beta 6, but this also happens on my old ios6 and xcode 4 apps
Please try this
//viewDidload
if ([self respondsToSelector:#selector(setNeedsStatusBarAppearanceUpdate)]) {
// iOS 7
[self prefersStatusBarHidden];
[self performSelector:#selector(setNeedsStatusBarAppearanceUpdate)];
} else {
// iOS 6
[[UIApplication sharedApplication] setStatusBarHidden:YES withAnimation:UIStatusBarAnimationSlide];
}
// Add this Method
- (BOOL)prefersStatusBarHidden
{
return YES;
}
This code has been taken from this link
What I usually do is add two key-value properties to the Info.plist file.
The properties source code is:
You need to add a method to the view controller, and not to the app delegate as you write.
- (BOOL)prefersStatusBarHidden
{
return YES;
}
As something occured to me!!
for anyone else ,,
Make sure you are modifying the info.plist in the right *TARGET* :/
plus the accepted answer.
I have an iPhone application in which I am testing in the applicationDidBecomeActive: that if the selected viewcontroller's rootview is there, then I want to call one webservice, otherwise not when I am coming from background to foreground I am taking the stack and checking it. But now even if I am in the rootview the webservice is not getting called. Can anybody help me on this?
Here is my code snippet:
- (void)applicationDidBecomeActive:(UIApplication *)application{
NSLog(#"applicationWilssnd");
if(tabBarController.selectedIndex==0)
{
NSArray *mycontrollers = self.tabBarController.viewControllers;
NSLog(#"%#",mycontrollers);
///if([mycontrollers objectAtIndex:0]!=)
///[[mycontrollers objectAtIndex:0] popToRootViewControllerAnimated:NO];
PinBoardViewController *pinvc=(PinBoardViewController*)[[mycontrollers objectAtIndex:0]topViewController] ;
if([mycontrollers objectAtIndex:0]!=pinvc)
{
}
else
{
[pinvc merchantnews];
}
mycontrollers = nil;
tabBarController.selectedIndex = 0;
}
}
`here the merchantnews is not getting called.
PinBoardViewController *pinvc=(PinBoardViewController*)[[mycontrollers objectAtIndex:0]topViewController] ;
if([mycontrollers objectAtIndex:0]!=pinvc)
Instead of this, try this
PinBoardViewController *pinvc=(PinBoardViewController*)[[mycontrollers objectAtIndex:0]topViewController] ;
if(pinvc isKindOfClass:[PinBoardViewController class]){
// Do ur stuff
}
So my problem is that after integrating gamecenter nicely into my iphone app, it won't show the achievements list!
The integration was a success I think because when I use the submitAchievement method, I do unlock achievements on the list. But I must look at the list from the GameCenter App on the iPhone, not within my own app as it doesn't work.
ikuragames first help me get the code right (thx you !!) but it still doesn't work ! :(
-(void)showAchievments
{
//NSLog(#"showAchievments");
GKAchievementViewController *achievements = [GKAchievementViewController alloc] init];
if (achievements != nil)
{
achievements.achievementDelegate = self;
[(EAGLView *)self.view achievmentsWillAppear];
[self presentModalViewController:achievements animated:YES];
}
}
- (void)achievementViewControllerDidFinish:(GKAchievementViewController *)viewController
{
//NSLog(#"achievementViewControllerDidFinish");
[glView achievmentsWillDisappear];
[self dismissModalViewControllerAnimated:YES];
}
On debug mode, I can clearly see that each line or code are "processed" and not error whatsoever is displayed. BUT, nothing appears on my screen :(
Can you please help me ? (here is some doc.)
I found the answer.
Turned out that the view controller I was sending showAchievments to was not the view controller I wanted.
I was doing something like:
[[myViewController sharedInstance] showAchievments];
But the sharedInstance method returned a brand-new, vanilla-initialised myViewController, and not the one I was already using.
Now it works perfectly, I hope this will help someone in the future.
As the title says. My UIViewController will not rotate no matter what. When it loads shouldAutorotateToInterfaceOrientation is being called but after that it doesnt.
UPDATE 1:
It's a really really wierd problem. At least for me. And i ll try to explain everything.
It's a navigation based app. Every controller has
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation{
return YES;
}
Xcontroller is a child of Acontroller and it doesn't auto rotate. If Xcontroller become a child of Bcontroller then it will autorotate. So something is wrong with Acontroller. But Acontroller is identical (except its data) to Bcontroller.
Whats Wrong?
UPDATE 2:
I decided to recreate Acontroller. And it worked.I believe I was missing something stupid.
I am not sure whether it's the same reason as your case. But I experienced the same thing. the shouldAutorotateToInterfaceOrientation was only called once in the beginning.
After some serious debugging by taking code apart, I found that the reason is in my overridden init method.
I had this before:
- (id)initWithAlbum:(PhotoAlbum *)theAlbum {
if (self) {
self.photoAlbum = theAlbum;
}
return self;
}
And then I changed to this
- (id)initWithAlbum:(PhotoAlbum *)theAlbum {
if (self = [super init]) {
self.photoAlbum = theAlbum;
}
return self;
}
Note: the only difference is I added [super init] to call the parent init.
After this change, the rotation works well and the shouldAutorotateToInterfaceOrientation is being called everytime I rotate the screen.
Hope this help.
There can be several possible reasons your view controller does not rotate.
See Apple's official Q&A on this issue:
Why won't my UIViewController rotate with the device?
http://developer.apple.com/library/ios/#qa/qa2010/qa1688.html
Apple Q&A has the detailed solution for the problem.
Why won't my UIViewController rotate with the device?
http://developer.apple.com/library/ios/#qa/qa1688/_index.html
If you add a viewcontroller.view to uiwindow, you should set this viewcontroller as rootviewcontroller.
[self.window addSubview: mainViewcontroller.view];
self.window.rootViewController=mainViewcontroller;
Also, make sure you don't have rotation lock on. I spent a good hour trying to figure out why my views stopped rotating. shouldAutorotateToInterfaceOrientation was being called only once at start up and when Game Center leaderboards/achievements were presented.
I had the same issue - the reason was, that it was my first UIViewController, that i created on the fly in my ApplicationDelegate, added it's View to my UIWindow and immediately released it.
That's of course not correct as I just added the UIView of the UIViewController (retaining it) and than released the whole controller.
You should add your first UIViewController as an instance variable in Your ApplicationDelegate instead, and release it in Your ApplicationDelegate's dealloc-method.
In my case, the ViewController was inside a NavigationController which was used by a "parent" viewControlled that received the orientation changes.
What I did in this parent was:
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation{
if(_navigationController){
return [_navigationController.topViewController shouldAutorotateToInterfaceOrientation: toInterfaceOrientation];
}
return toInterfaceOrientation == UIInterfaceOrientationPortrait;
}
This way you can implement your own orientation change logic depending on the currently visible controller.
(BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation{ return YES; }
The above method if u using, you will able to call many time if u want with out any error.
I think there is no strange behavior here, it is called only one which is right. There is no need to call more than one to decide if the device should rotate to a direction or not.
This method just ask if the device should rotate to a direction or not.
If you want to handle the orientation change, you should register for the notification from the UIDeviceDidChangeOrientationNotification and override the following method:
- (void)orientationChanged:(NSNotification *)notification
{
UIDeviceOrientation deviceOrientation = [UIDevice currentDevice].orientation;
if (UIDeviceOrientationIsLandscape(deviceOrientation) &&
!isShowingLandscapeView)
{
[self presentModalViewController:self.landscapeViewController
animated:YES];
isShowingLandscapeView = YES;
}
else if (deviceOrientation == UIDeviceOrientationPortrait &&
isShowingLandscapeView)
{
[self dismissModalViewControllerAnimated:YES];
isShowingLandscapeView = NO;
}
}
See more here.
I have the same problem but with two view controllers added to the application's UIWindow. The reason
is The view controller's UIView property is embedded inside UIWindow but alongside an additional view controller
From Apple Technical Q&A
http://developer.apple.com/library/ios/#qa/qa1688/_index.html