My app displays pdf pages,in portrait mode a single page is getting displayed(default mode is portrait).On rotating to landcscape it should display two pages side by side,
In my ViewController's viewdidloadmethod i have added the following,
- (void)viewDidLoad
{
UIDeviceOrientation deviceOrientation = [[UIDevice currentDevice] orientation];
landscape=UIDeviceOrientationIsLandscape(deviceOrientation);
if(landscape)
{
//logic goes here
}
else
{
logic for portrait goes here
}
}
But it's not working for me,only the portrait logic is getting excecuted.Please help
Orientation changes are handled a bit different way.
Your viewcontroller needs to receive notification, when orientation changes.
Here's the sample code:
#implementation PortraitViewController
- (void)awakeFromNib
{
isShowingLandscapeView = NO;
[[UIDevice currentDevice] beginGeneratingDeviceOrientationNotifications];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:#selector(orientationChanged:)
name:UIDeviceOrientationDidChangeNotification
object:nil];
}
- (void)orientationChanged:(NSNotification *)notification
{
UIDeviceOrientation deviceOrientation = [UIDevice currentDevice].orientation;
if (UIDeviceOrientationIsLandscape(deviceOrientation) &&
!isShowingLandscapeView)
{
isShowingLandscapeView = YES;
// logic for landscape orientation goes here
}
else if (UIDeviceOrientationIsPortrait(deviceOrientation) &&
isShowingLandscapeView)
{
isShowingLandscapeView = NO;
// logic for portrait orientation goes here
}
}
For futher information, check Apple documentation
Related
I am creating an App in portrait and Landscape Mode for iPad . I create a XIB in Landscape Mode for iPad but when i run that App it always shows in portrait Mode .
I set all setting under property list(.plist) file as "Supported Interface orientation(iPad)" and set Landscape(Left Home button) and landscape(Right Home Button) and also check the Orientation from the Code but all this doesn't work.
please help us if any one knows the exact problem or this , we are using Navigation Controller
Add this line of code in didFinishLaunchingWithOptions in delegate.
[[UIDevice currentDevice] beginGeneratingDeviceOrientationNotifications];
[[NSNotificationCenter defaultCenter] addObserver:self selector:#selector(preferredInterfaceOrientationForPresentation) name:#"UIDeviceOrientationDidChangeNotification" object:nil];
Then add following methods in delegate first and run the app, if fixed, COOOOL else add following four methods in each your view controller. You problem will be fixed.
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
return (interfaceOrientation == UIInterfaceOrientationLandscapeLeft);
}
- (BOOL)shouldAutorotate {
return NO;
}
- (NSUInteger)supportedInterfaceOrientations {
return UIInterfaceOrientationMaskLandscape;
}
- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation {
return UIInterfaceOrientationLandscapeLeft;
}
I realize there a many questions relating to this issue, however i have not found one that solves my issue.
To start, I have set this code in my menu.h
-(BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
return YES; }
The status bar changes with orientation but the views are not rotating or resizing. In order to try to narrow down my issue, I decided to try to switch two views within one .xib based on orientation
- (void)viewDidLoad {
[super viewDidLoad];
[[UIDevice currentDevice] beginGeneratingDeviceOrientationNotifications];
[[NSNotificationCenter defaultCenter] addObserver:self selector:#selector(orientationChanged:) name:#"UIDeviceOrientationDidChangeNotification" object:nil];
}
-(void) orientationChanged:(NSNotification *)object
{
UIDeviceOrientation deviceOrientation = [[object object] orientation];
if (deviceOrientation == UIDeviceOrientationLandscapeLeft || deviceOrientation == UIDeviceOrientationLandscapeRight)
{
self.view = self.landscapeView;
}
else
{
self.view = self.portraitView;
}
}
In the iOS simulator, the view definitely changes to the specific views. However the landscape view shows up as if it was portrait and sideways.
my landscape view in IB
My landscape view in the iOS simulator after changing orientation
What am I doing wrong here? I can't figure it out, any help would be greatly appreciated. Thank you in advance.
** EDIT: New Code Below **
Okay.. my issue is that the view loads properly in landscape, it's just sideways. So the Landscape view loads, just sideways. My revised code based on #Seega is:
- (void)viewDidLoad {
[super viewDidLoad];
[[UIDevice currentDevice] beginGeneratingDeviceOrientationNotifications];
[[NSNotificationCenter defaultCenter] addObserver:self selector:#selector(orientationChanged:) name:#"UIDeviceOrientationDidChangeNotification" object:nil];
[[TTNavigator navigator] setCustomTarget:self];
[[TTNavigator navigator] setCustomAction:#selector(photoAction)];
}
- (void)willRotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration
{
if (toInterfaceOrientation == UIDeviceOrientationLandscapeLeft || toInterfaceOrientation == UIDeviceOrientationLandscapeRight)
{
self.view = self.landscapeView;
}
else
{
self.view = self.portraitView;
}
}
-(void) orientationChanged:(NSNotification *)object
{
UIDeviceOrientation deviceOrientation = [[object object] orientation];
if (deviceOrientation == UIDeviceOrientationLandscapeLeft || deviceOrientation == UIDeviceOrientationLandscapeRight)
{
self.view = self.landscapeView;
}
else
{
self.view = self.portraitView;
}
}
I would suggest putting your code in :
- (void)willRotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration
instead of making a new method. This will get called automatically if the shouldAutorotateToInterfaceOrientation method returns YES for that rotation.
Also there is a difference between UIDeviceOrientation and UIInterfaceOrientation so make sure your referencing the correct one. Your existing code would be changed to the following:
if (toInterfaceOrientation == UIInterfaceOrientationLandscapeLeft || toInterfaceOrientation == UIInterfaceOrientationLandscapeRight)
{
self.view = self.landscapeView;
}
else
{
self.view = self.portraitView;
}
Also you can use a macro to check the interface orientation keeping your code cleaner.
if (UIInterfaceOrientationIsLandscape(toInterfaceOrientation))
{
self.view = self.landscapeView;
}
else
{
self.view = self.portraitView;
}
Can you make sure, you have all the orientation support selected as follows. I tried this, and it seems to be working fine for me.
You should better simply use
- (void)willRotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration
{
if (toInterfaceOrientation == UIInterfaceOrientationLandscapeLeft || toInterfaceOrientation == UIInterfaceOrientationLandscapeRight)
{
self.view = self.landscapeView;
}
else
{
self.view = self.portraitView;
}
}
to handle the rotations instead of creating a own one.
And now you can delete all the notification stuff.
Idea!!!
If you are setting up the views in interface builder and then switching the actual view thats being displayed when the view rotates then you need to build that View in that particular orientation, not just size it to fit the orientation.
To check this:
Open your .xib in Interface Builder.
Click on the 'view' under objects so you have the whole view selected.
Look under the 'Simulated Metrics' on the right side of IB. Make sure 'Landscape' is selected in the 'Orientation' drop down.
If your view says 'Portrait' for the view you want to represent your landscapeView then it could be that xcode is rotating your landscape view to portrait and messing with your presentation.
Let me know if this helped.
Hey thank you all for your help. I had a friend help and am not entirely sure was the problem. I can tell you the things I know he did do.
Disabled our ads temporarily
deleted the second view entirely and went with native orientation and resizing
added this to almost every .m file.
-(BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
return YES;
}
As well a programmatically changed a few of the other views similar to this
-(BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
if (interfaceOrientation == UIDeviceOrientationLandscapeLeft || interfaceOrientation == UIDeviceOrientationLandscapeRight)
{
if ([UIDevice currentDevice].userInterfaceIdiom == UIUserInterfaceIdiomPhone)
{
self.Button.frame = CGRectMake(27,96,86,86);
self.Label.frame = CGRectMake(27,162,86,21);
}
else
{
self.Button.frame = CGRectMake(18,100,86,86);
self.Label.frame = CGRectMake(18,164,86,21);
}
}
}
Sorry, I can't fully explain the answer, I do not fully understand everything that was included in the project that affected the orientation. I am still very new to iOS development.
Im developing an application to display a gallery of images by using a UIScrollView, the sliding between images works fine on portrait mode but when changed to landscape mode it shows the image plus a portion of the next image.
If i could get some explanation on how to solve this issue i would be very thankful.
Make sure your UIScrollView and it's parent view have the right UIViewAutoResizing and autoResizesSubViews values.
Then listen for device orientation changes and take appropriate steps (= reposition subviews of the scrollview)
-(void)applicationDidFinishLaunching:(UIApplication *)application {
// ... other things
[[UIDevice currentDevice] beginGeneratingDeviceOrientationNotifications];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:#selector(didRotate:)
name:#"UIDeviceOrientationDidChangeNotification" object:nil];
};
-(void)didRotate:(NSNotification *)notification {
UIDeviceOrientation orientation = [[UIDevice currentDevice] orientation];
if (orientation == UIDeviceOrientationLandscapeLeft) {
NSLog(#"Landscape Left!");
}
}
I have a very strange problem.
I added orientation to my app for landscape and portrait without many problems and it works.
However, I noticed something weird.
When I keep my iPad "horizontal", meaning parallel to the floor, the view shifts in my window in a way that I did not define and it doesn't look good naturally. It shifts to an "in-between" state that I do not want (I don't know how to explain it otherwise).
Anyone experienced the same problem? And what is the solution to this problem?
For info: I used an observer on orientation change. I think this is where the problem occurred:
[[UIDevice currentDevice] beginGeneratingDeviceOrientationNotifications];
[[NSNotificationCenter defaultCenter] addObserver:self selector:#selector(orientationChanged:) name:#"UIDeviceOrientationDidChangeNotification" object:nil];
I also used this code, but I didn't have problems with it before:
-(void)willRotateToInterfaceOrientation:
(UIInterfaceOrientation)toInterfaceOrientation
duration:(NSTimeInterval)duration {
[super willRotateToInterfaceOrientation:toInterfaceOrientation
duration:duration];
if (toInterfaceOrientation == UIInterfaceOrientationLandscapeRight) {
self.view=landscapeView;
self.view.transform=CGAffineTransformMakeRotation(deg2rad*(90));
self.view.bounds=CGRectMake(0.0,0.0,1024.0,748.0);
} else if (toInterfaceOrientation == UIInterfaceOrientationLandscapeLeft) {
self.view=landscapeView;
self.view.transform=CGAffineTransformMakeRotation(deg2rad*(-90));
self.view.bounds=CGRectMake(0.0,0.0,1024.0,748.0);
} else if (toInterfaceOrientation == UIInterfaceOrientationPortrait){
self.view=portraitView;
self.view.transform=CGAffineTransformMakeRotation(deg2rad*(0));
self.view.bounds=CGRectMake(0.0,0.0,768.0,1004.0);
} else {
self.view=portraitView;
self.view.transform=CGAffineTransformMakeRotation(deg2rad*(180));
self.view.bounds=CGRectMake(0.0,0.0,768.0,1004.0);
}
}
Thanks!
Apple demonstrated Photo's for the iPad. In their demo, they said you can Flip the iPad and it flips the image.
How is this result achieved?
I've been reading about UIInterfaceOrientation all day and I'm lost
Any help would be appreciated.
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
UIInterfaceOrientation orientation = [[UIDevice currentDevice] orientation];
// NSLog(#"orientation: %#", [orientation )
if(orientation==UIInterfaceOrientationPortrait ||orientation==UIInterfaceOrientationPortraitUpsideDown) {
//Code
return NO;
}
if (orientation==UIInterfaceOrientationLandscapeRight ||orientation==UIInterfaceOrientationLandscapeLeft ) {
//Code
return YES;
}
return NO;
}
You implement in your UIViewController subclass:
- (BOOL)shouldAutorotateToDeviceOrientation:... {
Return YES;
}
And most of the time the UIKit manages it all for you.