I am using custom based uiview controller with uitabbar contains uitableview. I am using image for cell background. I want to do orientation from portrait to landscape but the issue is it is not changing on orientation. I just want to know is there are any special thing for custom uiviewcontroller for orientation?
Thanks in advance
Regards,
sathish
If nothing happens when you rotate the device, you either have the system-wide rotation lock enabled (you checked that, right?), or your view controller isn't returning YES to the alternate orientation in its shouldAutorotateToInterfaceOrientation:, or you're doing something odd with your views that means your view controller isn't getting set as the “frontmost” one and thus isn't getting asked about orientation changes. It'll be easier to narrow that down if you post the code you're using to set up the controller and its view.
Related
I have a Tabbar project in which one one the tabs should be on landscape mode. I've seen than the Tabbar controller only allows it only if all its views allow it. Son now I'm somehow forced to adapt all the views for both portrait and landscape mode, which I've never did before.
Am I right assuming that all should be done under:
-(void)willAnimateRotationToInterfaceOrientation...
so what happens with subview which are lazyly initialized? such as a footerView on a tableView?
Another thing is, I have a method to scroll the tableView so nothing is kept under the keyboard when it's called. The method uses a constant float + a variable. In landscape mode, the constant should be another.
Any feedback would be appreciated. Thanks in advance!
Read up on autoresizingmask - setting this attribute on your views will automate a lot of the orientation resizing.
And yes, you'll need a landscape and a portrait value for your constant.
how do I implement a button that will flip the screen 180deg for my game (if the user wishes to play it with the iPhone upside-down), and have it affect all of my 5 different views?
You should apply a transform to the parent view (your UIWindow). The rotation can be made using CGAffineTransformMakeRotation().
It might be better to actually allow the device orientation to cause the rotation though. In App settings set that the app supports autorotation and then in the UIViewController return tru to -(BOOL)shouldAutorotateToInterfaceOrientation when the rotation passed in is UIInterfaceOrientationPortraitUpsideDown
Look at shouldAutorotateToInterfaceOrientation. And maybe [myView setNeedsDisplay]; could help.
It sounds like you just want to use the build in automatic orientation rotation. You may need to tell your app in the build settings that it supports the upsidedown orientation and as dasdom mentioned you need to implement shouldAutorotateToInterfaceOrientation in all of your view controllers.
There is no way to force the phone into an orientation on-demand.
If you are looking to just rotate a view you can apply a CGAffineTransform.
I know how to do an orientation change, but lets say you have a view with buttons, labels, ect. The autoresizing distorts and makes the view look strange. What's the accepted way to do this, do I just create a portrait and landscape view. If so where would I actually do the swapping of these views.
Do all kind of resizing and reposition in your layoutSubviews method of UIView.
Once the orientation is changed, your layoutSubviews would be called then you can know the current orientation by using UIDevice class. and reposition your views child accordingly
UIDevice property to be used for getting current orientation .
#propertyic,readonly) UIDeviceOrientation orientation
My sandbox app:
https://github.com/comonitos/programatical_device_orientation
The solution is easy
I have a TabBar bases application, which supports Landscape orientation only for one special view (the rootview of a UINaviagtionController). Now i want to force portrait orientation for all other views for this navigationcontroller.
I have tried to use
[[UIDevice currentDevice] setOrientation:UIDeviceOrientationPortrait];
This works great but this piece of code is a private api call and I can not risk a app rejection.
I have also tried to rotate the next view manually but this rotates only the view and not the navigation or the tab bar.
Is there a similary way to force orientation change?
There is currently no way to do that.
Have a look at this question, I have the same problems. With a tabbar application, you must have everything to autorotate, or nothing. You can find ways to have shouldAutorotate answer differently on each view, but actually this does not work. I don't know if this is an intended behaviour or a bug, anyway the only viable solution I'm aware of (without using undocumented API) is to manage the rotation by yourself, and do not rely on autorotation.
This means in other words that you need to start orientation notifications (look at UIDevice, there are methods to start and stop notifications about the device orientation), then for each view you want to rotate register as observer, and manage orientation manually, like this (don't remember where I got this snippet):
// Rotates the view.
CGAffineTransform transform = CGAffineTransformMakeRotation(M_PI/2);
self.view.transform = transform;
This is just an example of the basic problem I'm having, so don't worry if this situation sounds a bit pointless ;)
Let's say I have an app that's mainly a UINavigationController just two levels deep. The top level is a table with a list of image filenames, and the second level has just a UIImageView showing the image for the filename you tapped.
For an app such as this, does anyone know a good way to allow the table at the top level to autorotate while keeping the second level of images fixed in portrait mode?
So far I've been able to almost get there... but when I tap a filename while in landscape mode, the image slides into view in the wrong orientation even if the second level view controller's shouldAutorotateToInterfaceOrientation returns yes for only portrait modes.
There was no good way to do this in iPhone OS 2.x, but in 3.0, they've dramatically improved it.
In 2.x, the shouldAutorotateToInterfaceOrientation: delegate method was only obeyed for changes to the orientation, so you'd get the behavior you describe: if it was rotated in another view controller, it would stay rotated through pushes and pops even if the new view controller didn't support rotation to that orientation.
In 3.0, UINavigationController polls shouldAutorotateToInterfaceOrientation: on each push or pop and obeys what it returns the way you'd expect, e.g.: if you're currently rotated in Landscape Left orientation, and you push an instance of a view controller that only supports Portrait orientation via shouldAutorotateToInterfaceOrientation:, it automatically and instantly flips the logical orientation and slides in the new view the correct way in Portrait orientation.
Note that this will only work on applications linked against (and therefore requiring) 3.0. For applications linked against 2.x, it will emulate the old behavior.
The problem is that if you use auto rotation the entire UI (including the UIWindow instance I believe) is rotated.
Anything pushed onto the navigation controller at this point will be done in landscape.
So when you push the imageview, that is exactly what you get.
To get this to work, you have to either:
Handle the rotation of the root view
manually (using a transform)
Unrotate the image view by -PI/2
using a transform.
Either way you have to perform the transforms manually to get this to work.
As a side note, this may be bad UI design. As a user, I would expect as I drill down for images to appear rightside up. But this is without knowing the exact context of your app.