问题
Ok so I currently have 3 views and I need only one of them to autorotate to any orientation while the rest stay in portrait. Right now my set up is a splashviewcontroller fades into view A, and inside view A is a button to switch to view B. All I want is for view B to be able to rotate to any orientation.
When I return YES for shouldautorotatetointerfaceorientation in the splashviewcontroller, every view rotates because this is the parent view. When I return portrait only in the splashview, nothing rotates even if the other views return YES. Is there a way to only have view B rotate? I'm willing to do it manually if you can provide code. Thanks
回答1:
You can manually mange the rotation of any desired UIView object like so:
EDIT:
In the init or viewDidLoad
- (void)viewDidLoad
{
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(rotate) name:UIDeviceOrientationDidChangeNotification object:nil];
[super viewDidLoad];
}
#define degreesToRadian(x) (M_PI * (x) / 180.0)
-(void)rotate{
self.view.bounds = CGRectMake(0, 0, 0, 0);
if ([UIDevice currentDevice].orientation == UIInterfaceOrientationPortrait){
CGAffineTransform landscapeTransform = CGAffineTransformMakeRotation(degreesToRadian(0));
landscapeTransform = CGAffineTransformTranslate (landscapeTransform, 0.0, 0.0);
self.view.bounds = CGRectMake(self.view.bounds.origin.x, self.view.bounds.origin.y, 320, 480);
[self.view setTransform:landscapeTransform];
} else if ([UIDevice currentDevice].orientation == UIInterfaceOrientationPortraitUpsideDown){
CGAffineTransform landscapeTransform = CGAffineTransformMakeRotation(degreesToRadian(180));
landscapeTransform = CGAffineTransformTranslate (landscapeTransform, 0.0, 0.0);
self.view.bounds = CGRectMake(self.view.bounds.origin.x, self.view.bounds.origin.y, 320, 480);
[self.view setTransform:landscapeTransform];
} else if ([UIDevice currentDevice].orientation == UIInterfaceOrientationLandscapeRight){
CGAffineTransform landscapeTransform = CGAffineTransformMakeRotation(degreesToRadian(90));
landscapeTransform = CGAffineTransformTranslate (landscapeTransform, 0.0, 0.0);
self.view.bounds = CGRectMake(self.view.bounds.origin.x, self.view.bounds.origin.y, 480, 320);
[self.view setTransform:landscapeTransform];
}else if ([UIDevice currentDevice].orientation == UIInterfaceOrientationLandscapeLeft){
CGAffineTransform landscapeTransform = CGAffineTransformMakeRotation(degreesToRadian(270));
landscapeTransform = CGAffineTransformTranslate (landscapeTransform, 0.0, 0.0);
self.view.bounds = CGRectMake(self.view.bounds.origin.x, self.view.bounds.origin.y, 480, 320);
[self.view setTransform:landscapeTransform];
}
}
回答2:
Inside targets summary section, Supported Interface Orientation all items are selected except for Upside Down, so all you need to do is go to your .m file that handles the view and use this piece of code.
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
// Return YES for supported orientations
return (interfaceOrientation == UIInterfaceOrientationPortrait);
}
This did the trick for me.
来源：https://stackoverflow.com/questions/8043263/only-having-one-view-autorotate-in-xcode