Ios automatic (manual) screen conversion, ios

Ios automatic (manual) screen conversion, ios

I. The first time I made a screen conversion, I had a lot of detours. After a while I did not write, I found that I forgot about it. Fortunately, duniang and google made me quickly find a feeling, next, let's talk about my understanding of screen conversion (please leave a message if there is something wrong or a better method. Thank you very much !!!)

The screen conversion method before iOS6 is simple.

-(BOOL) shouldAutorotateToInterfaceOrientation :( UIInterfaceOrientation) toInterfaceOrientation {

Return (toInterfaceOrientation = UIInterfaceOrientationPortrait) | (toInterfaceOrientation = UIInterfaceOrientationLandscapeLeft) | (toInterfaceOrientation = UIInterfaceOrientationLandscapeRight );

}

 

IOS6 and later

① Inform Appdelegate of the support for screen Conversion

-(NSUInteger) application :( UIApplication *) application supportedInterfaceOrientationsForWindow :( UIWindow *) window {

Returnself. orientation;

}

 

② In the viewController for screen Conversion

-(Void) viewWillAppear :( BOOL) animated {

[Super viewWillAppear: animated];

AppDelegate * del = (AppDelegate *) [UIApplicationsharedApplication]. delegate;

Del. orientation = UIInterfaceOrientationMaskAllButUpsideDown;

}

 

③ Add

-(NSUInteger) supportedInterfaceOrientations {

Return UIInterfaceOrientationMaskPortrait | UIInterfaceOrientationMaskLandscapeLeft | UIInterfaceOrientationMaskLandscapeRight;

}

-(BOOL) shouldAutorotate {

ReturnYES;

}

 

2. Manual Screen conversion (triggered by pressing a button or an event)

1. Fake screen Rotation

① Turn to the status bar

[[UIApplication sharedApplication] setStatusBarOrientation: UIInterfaceOrientationLandscapeLeft animated: YES];

② Rotate the current view

Self. view. transform = CGAffineTransformRotate (self. view. transform, M_PI/4 );

 

2. Use a private method to screen (this type should be in ARC), and use Appstore with caution

-(Void) setCustomOrientation :( NSString *) orientate {

UIInterfaceOrientation orientation = orientate. intValue;

If ([[UIDevice currentDevice] respondsToSelector: @ selector (setOrientation :)]) {

[[UIDevice currentDevice] performSelector: @ selector (setOrientation :) withObject :( id) orientation];

}

}