I am having an issue with resizing UIPageViewController in landscape mode.
Here is my scenario:
I have a UIViewController which has a scrollview in it.
I added a UIPageViewController to the scrollview programmatically and it is displaying all my view controllers in each page correctly.
When i change the device orientation to landscape i am correctly changing the content size of the scrollview but the PageViewController is displaying only up to half of its contents. Can you please help me with this one.
Thanks,
Anand.
It looks like you are either not getting the correct orientation of your device or trying to set it in the viewDidLoad function. The following code should correctly set your page view controller's frame to current orientation.
- (void)viewWillLayoutSubviews {
CGRect screenFrame = [[UIScreen mainScreen] applicationFrame];
if (UIInterfaceOrientationIsLandscape([[UIApplication sharedApplication] statusBarOrientation])) {
screenFrame = CGRectMake(0, 0, screenFrame.size.height, screenFrame.size.width);
}
//Please don't forget to replace _myPageViewController with your variable
_myPageViewController.frame = screenFrame;
}
Please note that code is getting called from viewWillLayoutSubviews
function.
Related
I'm trying to figure out the best way to have a custom inputAccessoryView rest on top of a tab bar. Currently, I have an inputAccessoryView that rests at the very bottom of the screen, but it covers the tab bar. Any one know the best practice for shifting that inputAccessoryView up?
Currently I have a view defined in a storyboard with a tab bar. Its corresponding view controller takes the view and calls becomeFirstResponder. I've overwritten both:
- (UIView *)inputAccessoryView and -(BOOL)canBecomeFirstResponder
within the view's .m
Found a workaround by shifting toolbar frame by bottomSpacing = tabbar height:
- (void) layoutSubviews {
[super layoutSubviews];
CGRect origFrame = self.frame;
origFrame.origin.y = _keyboardIsVisible ? 0 : -self.bottomSpacing;
self.frame = origFrame;
}
Strangely it works well in JSQMessagesInputToolbar, but it's lost after animations if I do this in UIView that wraps toolbar, or maybe I'm missing something..
UPDATED -- I have an iPad app that was originally designed and written for portrait mode only; I now want to add a UIScrollView so it will scroll in landscape mode. Auto Layout is checked and the different scenes are built using Storyboard. (I am following this tutorial). The major problem is when switching from portrait to landscape, the bounds of the frame change drastically, thereby causing problems with the logic of the scroll.
This is the image of the first scene (UIView) I am trying to add a UIScrollView to:
This is what it looks like in landscape mode (w/o scrolling):
This is my code in the -viewDidLoad method for that scene:
// create UIScrollView
UIScrollView *scroll = [[UIScrollView alloc]initWithFrame:CGRectMake(0,0,self.bookDetailView.frame.size.width, self.bookDetailView.frame.size.height)];
scroll.delegate = self;
scroll.pagingEnabled = YES;
scroll.scrollEnabled = YES;
scroll.showsVerticalScrollIndicator = YES;
CGSize scrollableSize = CGSizeMake(768, 1024); // size of portrait mode
scroll.contentSize = scrollableSize;
[self.view addSubview: scroll];
The scroll bar (as thin as it is) now shows, BUT although it moves like it should, the UIView doesn't move. Portrait mode works fine (no scrolling needed) but landscape mode doesn't scroll at all (even tho' the vertical scroll bar does move). I'm wondrering if I should abandon the idea of using scrolling for landscape mode and create separate scenes for landscape mode instead.
Is there any reason why you need a separate UIScrollView ? UITableView is already a scroll view. My guess is that the touch events from the UIScrollView you created are interfering with those of the UITableView.
CGRect rect = CGRectMake(0, 0, 1050, 900);
[wineAdminPopup presentPopoverFromRect:rect inView:master.view permittedArrowDirections:UIPopoverArrowDirectionUp animated:YES];
Hi I put the above code to make a popup in a tableview. However it doesn't popup in the whole screen. If I want to center it in the iPad screen with no arrow or arrow in the center. How can i do it. Thanks in advance.
The rect parameter in presentPopoverFromRect:... specifies the rectangle at which to anchor the popover, not the size of the presented popover. That would be specified by setting contentSizeForViewInPopover on the popover's content view controller.
If you don't want the arrows and don't need the specific behavior of popovers, then you could
present your view controller modally:
controller.modalPresentationStyle = UIModalPresentationFullScreen; // or UIModalPresentationFormSheet
[self.navigationController presentModalViewController:controller animated:YES];
presentModalViewController is deprecated in iOS 6 and above. Use presentViewController:yourViewController animated:YES completion:nil (parameters animated and completion can be set depending on your requirements). Also if you want to resize yourViewController you need to change self.view.frame and next time your view controller will be of that size.
I am trying to draw an image into a UIView subclass overriding drawRect. This image drawing class needs moving and zooming capabilities, so I made it a subview of a scrollview.
My problem is that my image seems to get cropped, either by the screen or the scrollView bounds (the image is larger than the screen). I don't have a clue why, this seems to e pretty basic stuff.
The view hierarchy in my ViewController looks like this:
View Controller
View
ScrollView
MapView
I've created outlets for the scroll view and the map view (which is the view implementing drawRect).
My ViewController initial setup code for configuring the scroll view looks like this:
- (void)viewDidLoad
{
[super viewDidLoad];
scrollView.delegate = self;
scrollView.contentSize = CGSizeMake(450, 476);
scrollView.minimumZoomScale = 0.6;
scrollView.maximumZoomScale = 6.0;
}
My drawRect implementation:
- (void)drawRect:(CGRect)rect
{
UIImage *myImage = [UIImage imageNamed:#"map.jpg"];
CGRect rectangle = CGRectMake(0,0,450,476);
[myImage drawInRect:rectangle];
}
The image is draggable and zoomable within the scroll view, but it's cropped at what seems to be the screen bounds.
Any help would be appreciated.
drawRect can't draw outside the rect passed as a parameter to the drawRect method, which is determined by the view frame. Make your view 1200,1200 and make sure that clipToBounds is disabled on all the containing views.
Your problem is probably in drawInRect. From documentation of UIImage class:
drawInRect:
Draws the entire image in the specified rectangle, scaling it as needed to fit.
Make that rectangle bigger as you wish and center it in UIImageView. This question is answered here UIScrollView image/photo viewer with paging enabled and zooming
I have uitabbar application and I Want to rotate just one ViewController with chart in landscape mode. It's possible to do that?
There is no easy way to have only one view in landscape mode, while the others are in landscape, nor an easy way to programmatically switch to landscape mode.
One possible approach would be using a CGAffineTransform to transform your view in your viewWillAppear (i.e., right before the view is shown):
- (void)viewWillAppear:(BOOL)animated; {
//-- Adjust the status bar
[UIApplication sharedApplication].statusBarOrientation = UIInterfaceOrientationLandscapeRight;
//-- Rotate the view
CGAffineTransform toLandscape = CGAffineTransformMakeRotation(degreesToRadian(90));
toLandscape = CGAffineTransformTranslate(toLandscape, +90.0, +90.0 );
[self.view setTransform:toLandscape];
}
Hope this works for you.
Only if it's modal, if it's part of the tabBarController, you need to support orientation change for all your controller