iOS开发>学无止境

禁止转屏 : 

　　在AppDelegate.m中增加这个方法,就可以禁止转屏

　　- (NSUInteger)application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(UIWindow *)window  
   　　 {  
    　　     return UIInterfaceOrientationMaskPortrait;  
   　　 }　　

某一个界面可以转屏:

　　需要写一个tabBarController的类,并写上以下方法

　　

#import "MFTabBarViewController.h"

#import "UINavigationController+Autorotate.h"

@interface MFTabBarViewController ()

@end

@implementation MFTabBarViewController

- (void)viewDidLoad {

    [super viewDidLoad];

    // Do any additional setup after loading the view.

}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {

    return (interfaceOrientation == UIInterfaceOrientationPortrait);

}

- (UIInterfaceOrientationMask)supportedInterfaceOrientations {

    return UIInterfaceOrientationMaskPortrait;

}

- (BOOL)shouldAutorotate

{

    return YES;

}

-(BOOL)prefersStatusBarHidden

{

    return NO;

}

@end

再创建一个 navigationViewController 的类 , 并写入以下方法

#import <UIKit/UIKit.h>

@interface UINavigationController (Autorotate)

- (BOOL)shouldAutorotate;

- (NSUInteger)supportedInterfaceOrientations;

@end

#import "UINavigationController+Autorotate.h"

@implementation UINavigationController (Autorotate)

////返回最上层的子Controller的shouldAutorotate

////子类要实现屏幕旋转需重写该方法

//- (BOOL)shouldAutorotate{

//    return self.topViewController.shouldAutorotate;

//}

//

////返回最上层的子Controller的supportedInterfaceOrientations

//- (NSUInteger)supportedInterfaceOrientations{

//    NSLog(@"%@", self.topViewController);

//    return self.topViewController.supportedInterfaceOrientations;

//}

- (BOOL)shouldAutorotate {

    if (self.topViewController != nil)

        return [self.topViewController shouldAutorotate];

    else

        return [super shouldAutorotate];

}

- (NSUInteger)supportedInterfaceOrientations {

    if (self.topViewController != nil)

        return [self.topViewController supportedInterfaceOrientations];

    else

        return [super supportedInterfaceOrientations];

}

- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation {

    if (self.topViewController != nil)

        return [self.topViewController preferredInterfaceOrientationForPresentation];

    else

        return [super preferredInterfaceOrientationForPresentation];

}

@end