Everything in my app is working a treat - but there is one niggling problem.
The UIImagePickerController seems to return the status bar when it is called. Obviously the app has the statusbar hidden throughout.
Now I have worked around this by rehiding it upon completion or canelation of the picker. This resulted in a black bar at the top of the app. So after the rehide I have had to reposition the titlebar and other table contents for it to fit.
All in all this works perfectly fine. However, the UIImagePickerController is called in detail view of a table. Therefore when the user has used the picker (and ive resized after use) and clicks the back button to return to the main table there is a small graphical glitch.
The detail view has been shifted up to hide the statusbar void, yet when I return to the main table and the app slides horizontally back to the main view, for a split second a 20px black box can be seen above the items on the detail view?
To recap. UIImagePickerController returns the staus bar (seemingly no matter what) and after coding to get rid and reformat the view I get a time (messy) graphical issue when returning to the main view.
Surely there is a way to stop the statusbar returning so I dont have to bodge bar back out using code? I have it set 'off' in the plist.
It very odd! Cheers
This helps to me.
1) You must delegate the UIImagePickerController
2) Add this to ViewController:
- (void)navigationController:(UINavigationController *)navigationController willShowViewController:(UIViewController *)viewController animated:(BOOL)animated
{ // Esconder el StatusBar. Provocado por el iOS7 y el UIImagePickerController
[[UIApplication sharedApplication] setStatusBarHidden:YES withAnimation:UIStatusBarAnimationNone];
}
implementing UIimagepicker controller use this.and hide status bar in to plist(statusbar initialy hidden=true) and set Uiview size 320x480 & implementing this
if([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary])
{
UIImagePickerController *picker= [[UIImagePickerController alloc]init];
picker.delegate = self;
picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
[self presentModalViewController:picker animated:YES];
[picker release];
}
Related
I am using auto layout with Storyboard. I present a popoverPresentationController from a cell rect:
NumberController * viewController = [self.storyboard instantiateViewControllerWithIdentifier:#"NumberController"];
UIPopoverPresentationController *pc = [viewController popoverPresentationController];
pc.delegate = self;
pc.permittedArrowDirections = UIPopoverArrowDirectionAny;
pc.sourceView = tableView;
pc.sourceRect = [tableView rectForRowAtIndexPath:indexPath];
[self.navigationController presentViewController:viewController animated:animated completion:nil];
The popover presents on an iPad in portrait mode with the arrow up.
I rotate the iPad to landscape mode. The popoverPresentationController keeps the same sourceView/sourceRect and properly points to the cell. It also keeps the up arrow.
But it is now at the bottom of the view, so the popover resizes to a shorter height. This is not desired behavior.
If the popover were simply to move to a new position and change the arrow direction, it would not need to resize at all. This is the desired behavior.
I thought the following method might permit me to make changes, but it is not called since the sourceView rect does not change:
- (void)popoverController:(UIPopoverController *)popoverController
willRepositionPopoverToRect:(inout CGRect *)rect
inView:(inout UIView **)view {
}
I have tried to reset the permittedArrowDirections (in preferredContentSize, because this seemed like the most logical place). This does not work (the popover still resizes):
- (CGSize) preferredContentSize {
[super preferredContentSize];
self.popoverPresentationController.permittedArrowDirections = UIPopoverArrowDirectionUnknown;
return CGSizeMake(DEFAULT_POPOVER_WIDTH,DEFAULT_POPOVER_HEIGHT);
}
I simply cannot find a way to force the popoverPresentationController to change arrow direction and reposition the popover instead of resizing the popover. I am beginning to think it is not even possible - but I still hold out hope that I am just missing something.
EDIT: In the meantime, it has occurred to me that maybe a popover is not the best way to present this view if I don't want it resized in iPad. I am going to try it with UIModalPresentationFormSheet presentation. But I would still like to find an answer to this question.
I just ran into the problem where
- (void)popoverController:(UIPopoverController *)popoverController
willRepositionPopoverToRect:(inout CGRect *)rect
inView:(inout UIView **)view {
was not being called because my view controller was detached. There may be a view in your view hierarchy whose view controller has not been added as a child view controller.
I thought the following method might permit me to make changes, but it is not called since the sourceView rect does not change
The sourceView rect does not have to change, just the interface orientation. From the UIPopoverControllerDelegate documentation:
For popovers that were presented using the presentPopoverFromRect:inView:permittedArrowDirections:animated: method, the popover controller calls this method when the interface orientation changes.
I'm playing around with an idea and basically I want a NSStatusItem with a NSPopoverController. I read about all the problem people had but I just want to try it. Is there a clean way to do it by now? All the versions I've seen are at least 1 year old and suuuuper hacky.
This was my approach so far but if I click my app in the statusbar nothing happens...
- (void)applicationDidFinishLaunching:(NSNotification *)aNotification
{
self.statusItem = [[NSStatusBar systemStatusBar] statusItemWithLength:NSVariableStatusItemLength];
//[self.statusItem setView:view];
[self.statusItem setTitle:#"Test"];
[self.statusItem setHighlightMode:YES];
[self.statusItem setAction:#selector(activatePopover:)];
}
-(IBAction)activatePopover:(id)sender
{
BOOL isEnabled = NO;
if (isEnabled) {
[self.popover showRelativeToRect:NSMakeRect(0, 0, 50, 50) ofView:statusItem.view preferredEdge:NSMinYEdge];
} else {
[self.popover close];
}
}
Any ideas how to get this running?
Thanks
This will not work without using a custom view on the status item. If you don't set a custom view, the view property will be empty (it only returns custom views, not whatever view NSStatusItem uses internally when you just use setTitle).
Unfortunately, as per Apple's docs, you'll need to provide your own view and handle clicks yourself if you want to use NSPopover.
I haven't seen a complete example that encompasses correct handling of this (the default implementation of status items does rather a lot which you will have to do all manually), and also fixes popover wonkynesses:
NSPopover, by default, won't become the key window (some controls won't work), unless you overwrite canBecomeKeyWindow of NSPopover's window
Correctly dismissing menus of other status items (you can call popUpStatusItemMenu with an empty menu to correctly focus your status item)
Drawing the highlighted background with drawStatusBarBackgroundInRect
Reacting to both left and right mouse clicks
Using NSRunningApplication.currentApplication.activateWithOptions to make sure all windows of your status item become active (otherwise your popover will, erratically, not be the receiver of keyboard input)
Dismissing the NSPopover with NSEvent.addGlobalMonitorForEventsMatchingMask (the built-in dismissal mechanism popovers come with doesn't work with status items)
Removing the status item on termination with NSStatusBar.systemStatusBar.removeStatusItem
I hope to have a blog post about this out sometime soon (note: I'm using RubyMotion, not Objective-C), that explains all these issues and hopefully provides an easier base to create menulets. I'll update this comment if I write that post.
Code:
-(void)initializeStatusBarItem
{
self.statusItem = [[NSStatusBar systemStatusBar] statusItemWithLength:NSSquareStatusItemLength];
NSImage* image = [NSImage imageNamed:#"image"];
// [image setTemplate:YES];
self.statusItem.button.image = image;
self.statusItem.highlightMode = NO;
self.statusItem.button.action = #selector(statusBarItemDidClick:);
}
- (void)statusBarItemDidClick:(NSStatusBarButton *)sender{
MainViewController *mainView = [[MainViewController alloc] init];
self.popoverView = [[NSPopover alloc] init];
[self.popoverView setContentViewController:mainView];
self.popoverView.contentSize = CGSizeMake(300, 400);
self.popoverView.behavior = NSPopoverBehaviorTransient;
[self.popoverView showRelativeToRect:sender.bounds ofView:sender preferredEdge:NSMaxYEdge];
}
In trying to attempt to use Apple's UIViewController containment I have encountered a problem with animating the transition between two UIViewControllers.
Here is the set up... I have created a UITabBarController and within one of the tabs I have created a UIViewController as a container. This ViewController manages the transition between a UIViewController and a UINavigationController. The before view is:
When the Next button is tapped the view begins it's transition with a flipFromRight transition. During the transition, the Navigation bar is in "to" view but is located 20pixels down from the top edge of the view. Picture below:
The green is the background color of the container view. Once the new view completes the transition, the Navigation bar snaps up to the top of the view and the final result is:
The time to snap in place is independent of the duration of the animation. I achieve the final state that I want, but the transition is a problem.
I have instrumented the viewController lifecycle and the frames of the Navigation bar and the UITableView are as specified in the XIB. The xib looks like this:
Here is the code:
In -viewDidLoad -
_fromVC = [[FromVC alloc] initWithNibName:#"FromVC" bundle:nil delegate:self];
[self addChildViewController:_fromVC];
[self.view addSubview:_fromVC.view];
[_fromVC didMoveToParentViewController:self];
In my button handler -
- (void)buttonSelected
{
//
// Create the "to" View controller
//
ToVC *toVC = [[ToVC alloc] initWithNibName:#"ToVC" bundle:nil];
//
// Create the navigation controller for the study activity
//
_toNavCon = [[UINavigationController alloc] initWithRootViewController:toVC];
[self addChildViewController:_toNavCon];
[_fromVC willMoveToParentViewController:nil];
[self transitionFromViewController:_fromVC
toViewController:_toNavCon
duration:0.7
options:UIViewAnimationOptionTransitionFlipFromRight
animations:nil
completion:^(BOOL finished) {
[_fromVC removeFromParentViewController];
[_toNavCon didMoveToParentViewController:self];
}];
}
There is no code in "to" view controller that changes the appearance of the view controller.
Another bit of information... When I "toggle In-Call status bar" in the simulator the gap at the top of the navigation bar is the height of the In-Call status bar.
I have looked at everything on the web and there is nothing that helps. Has anyone seen this and has anyone fixed it?
I did find an answer!! Subclass UINavigationController and override
- (BOOL)wantsFullScreenLayout{
return NO;
}
Apparently, UINavigationController and UITabController always want the full screen (default YES) - adjusting for the status bar - and you can not set this property any other way. It has been working for me.
[self.scrollView scrollRectToVisible:textField.bounds animated:YES];
I can't seem to get my UIScrollView to scroll at all so that it doesn't obscure my UITextField. I thought that scrollRectToVisible would be my savior but it looks like a no go. Maybe I'm missing something like translating the coordinates of my textField to my scrollView. Either way check out my sample project.
https://github.com/stevemoser/Programming-iOS-Book-Examples/tree/master/ch20p573scrollViewAutoLayout2
Oh, and this project might be missing the delegate connection but I checked that and it still doesn't scroll.
I've seen other questions similar to this but none that mention Autolayout.
I was having issues with scrollRectToVisible:: as well after converting to Auto Layout. I just changed it to a direct call to setContentOffset:: and it started working again.
I had the same problem, I wanted to scroll an autolayouted UITextEdit into view without making it the first responder.
For me the issue was that the bounds of the UITextField were set later on during the auto layout pass, so if you do it immediately after setting up the layout the bounds are not valid yet.
To workaround I did create a descendant of UITextField, did overwrite setBounds: and added a 0 timer to scroll into view "later on" (You can't scroll in that moment because the auto layout pass of the system might no be finished at that point)
#interface MyTextField: UITextField
{
bool _scrollIntoView;
}
..
#end
#implementation MyTextField
-(void)setBounds:(CGRect)bounds
{
bool empty=CGRectIsEmpty(self.bounds);
bool isFirstResponder=self.isFirstResponder;
[super setBounds:bounds];
if (empty && !isFirstResponder && _scrollIntoView)
[self performSelector:#selector(scrollIntoViewLater) withObject:nil afterDelay:0];
else if (empty && isFirstResponder)
[self performSelector:#selector(becomeFirstResponder) withObject:nil afterDelay:0];
}
-(void)scrollIntoViewLater
{
CGRect r=[scrollView convertRect:self.bounds fromView:self];
[scrollView scrollRectToVisible:r animated:TRUE];
}
#end
If the field should be additionally editable with the on screen keyboard, simply call becomeFirstResponder later on: it scrolls automagically into view above the keyboard using the private scrollTextFieldToVisible API which in turn calls scrollRectToVisible:animated: of the scrollview.
Your sample link is broken btw...
Alright, so I made a popover from my main view and all that good stuff. But I want to have my popover call an action in my main view when a button within the popover is pressed.
MainView *mainView = [[MainView alloc] initWithNibName:#"MainView" bundle:nil];
[mainView doStuff];
The "dostuff" function changes some elements within the view. For example, the color of the toolbar is supposed to be changed. I've put a print command and the print command executes. But for some reason, the toolbar won't change color.
I've imported the header of MainView into the popover.
I did an #class thingy for MainView in my popover.
doStuff is declared in MainView's header.
The IBOutlets are declared too, and connected.
Any ideas?
Well its disappointing that we have no direct method that can be used to check in which view (view controller) the popover is shown. The thing that I am doing in tabbased application is:
New_iPadAppDelegate *appDel = (New_iPadAppDelegate *)[[UIApplication sharedApplication] delegate];
NSArray *viewConts = [(UINavigationController *)[[appDel tabBarController] selectedViewController] viewControllers];
MainViewController *viewController = (MainViewController *)[viewConts lastObject];
if([[viewController popoverController] isPopoverVisible]){
[viewController doStuff];
}
Hope this helps,
I know this is not the best way, hoping apple thinks about this issue, or if somebody has devised a work around.
Thanks,
Madhup