ios9中的力方向

Question

我想在横向模式下的2个viewController和1个viewController中强制使用肖像模式，我尝试了较旧的技术，但是在ios9中不起作用

Answer 1

It's more than likely that you've got some allowed orientations defined in your info.plist . You should check there and remove any entries, as I believe these will override any other values in the project.

You should then be able to set the orientation on each VC with something like:

-(NSUInteger)supportedInterfaceOrientations{
return UIInterfaceOrientationMaskLandscapeRight;
}

-(BOOL)shouldAutorotate {
return NO;
}

I think the key you need to is Supported interface orientations .

Answer 2

You can set the orientation of the viewcontroller from Xib/Storyboard as each viewcontroller have the property "orientation"

and implement method given below

-(BOOL)shouldAutorotate 
{
     return NO;
}

Answer 3

You can set orientation as bellow in your viewDidAppear method

NSNumber *value = [NSNumber numberWithInt:UIInterfaceOrientationPortrait];
[[UIDevice currentDevice] setValue:value forKey:@"orientation"];