開發(fā)了很久一直沒(méi)有用到過(guò)屏幕旋轉(zhuǎn)絮供，一般app設(shè)置固定豎屏也就可以了墩新，但是涉及到視頻播放的時(shí)候全屏播放就是不得不實(shí)現(xiàn)的功能了倍谜，我們主要介紹兩點(diǎn)

一崩泡、屏幕旋轉(zhuǎn)監(jiān)聽

-(void)viewDidAppear:(BOOL)animated{
    [super viewDidAppear:animated];
    //開始生成 設(shè)備旋轉(zhuǎn) 通知
    [[UIDevice currentDevice] beginGeneratingDeviceOrientationNotifications];
    
    //添加 設(shè)備旋轉(zhuǎn) 通知
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(orientChange:) name:UIDeviceOrientationDidChangeNotification object:nil];
}




-(void)viewDidDisappear:(BOOL)animated{
    [super viewDidDisappear:animated];
    //銷毀 設(shè)備旋轉(zhuǎn) 通知
    [[NSNotificationCenter defaultCenter] removeObserver:self
                                                    name:UIDeviceOrientationDidChangeNotification
                                                  object:nil
     ];
    
    
    //結(jié)束 設(shè)備旋轉(zhuǎn)通知
    [[UIDevice currentDevice]endGeneratingDeviceOrientationNotifications];
}

/**屏幕旋轉(zhuǎn)的通知回調(diào)*/
- (void)orientChange:(NSNotification *)noti {
    UIDeviceOrientation  orient = [UIDevice currentDevice].orientation;
    switch (orient) {
        case UIDeviceOrientationPortrait:
            NSLog(@"豎直屏幕");
            break;
        case UIDeviceOrientationLandscapeLeft:
            NSLog(@"手機(jī)左轉(zhuǎn)");
            break;
        case UIDeviceOrientationPortraitUpsideDown:
            NSLog(@"手機(jī)豎直");
            break;
        case UIDeviceOrientationLandscapeRight:
            NSLog(@"手機(jī)右轉(zhuǎn)");
            break;
        case UIDeviceOrientationUnknown:
            NSLog(@"未知");
            break;
        case UIDeviceOrientationFaceUp:
            NSLog(@"手機(jī)屏幕朝上");
            break;
        case UIDeviceOrientationFaceDown:
            NSLog(@"手機(jī)屏幕朝下");
            break;
        default:
            break;
    }
}

備注已經(jīng)很詳細(xì)了

• UIDeviceOrientationUnknown 未知禁荒，屏幕旋轉(zhuǎn)鎖定時(shí)可能出現(xiàn)
• UIDeviceOrientationPortrait 手機(jī)垂直，home鍵在下邊
• UIDeviceOrientationPortraitUpsideDown手機(jī)垂直角撞，home鍵在上邊
• UIDeviceOrientationLandscapeLeft 手機(jī)水平呛伴，home鍵在右邊
• UIDeviceOrientationLandscapeRight 手機(jī)水平，home鍵在左邊
• UIDeviceOrientationFaceUp 手機(jī)躺著
• UIDeviceOrientationFaceDown 手機(jī)趴著

還可以根據(jù)statusBar的方向判斷

UIInterfaceOrientation orientation = [[UIApplication sharedApplication] statusBarOrientation];
        
        switch (orientation) {
            case UIInterfaceOrientationUnknown:
                NSLog(@"未知");
                break;
            case UIInterfaceOrientationPortrait:
                NSLog(@"豎直");
                break;
            case UIInterfaceOrientationPortraitUpsideDown:
                NSLog(@"屏幕倒立");
                break;
            case UIInterfaceOrientationLandscapeLeft:
                NSLog(@"手機(jī)水平谒所，home鍵在左邊");
                break;
            case UIInterfaceOrientationLandscapeRight:
                NSLog(@"手機(jī)水平热康，home鍵在右邊");
                break;
            default:
                break;
        }

二睦焕、手動(dòng)控制屏幕方向

如果我們想在頁(yè)面中通過(guò)按鈕設(shè)置屏幕方向汇在，那么我們需要先設(shè)置支持的方向

設(shè)置支持的方向

//設(shè)置豎屏
NSNumber *orientationUnknown = [NSNumber numberWithInt:UIInterfaceOrientationUnknown];
        [[UIDevice currentDevice] setValue:orientationUnknown forKey:@"orientation"];
        
        NSNumber *orientationTarget = [NSNumber numberWithInt:UIInterfaceOrientationPortrait];
        [[UIDevice currentDevice] setValue:orientationTarget forKey:@"orientation"];


//設(shè)置橫屏
NSNumber *orientationUnknown = [NSNumber numberWithInt:UIInterfaceOrientationUnknown];
        [[UIDevice currentDevice] setValue:orientationUnknown forKey:@"orientation"];
        
        NSNumber *orientationTarget = [NSNumber numberWithInt:UIInterfaceOrientationLandscapeRight];
        [[UIDevice currentDevice] setValue:orientationTarget forKey:@"orientation"];

有人可能使用過(guò)以下方法，不過(guò)應(yīng)該被禁了宇攻，不能上架

//setOrientation 在3.0以后變?yōu)樗接蟹椒思馓裕荒苤苯尤フ{(diào)用此方法奕锌，否則后果就是被打回。
在網(wǎng)上搜了很多很久村生，都是這種調(diào)用私有方法的：
//強(qiáng)制橫屏惊暴，會(huì)被打回。
if ([[UIDevice currentDevice] respondsToSelector:@selector(setOrientation:)]) {
[[UIDevice currentDevice] performSelector:@selector(setOrientation:)
withObject:(id)UIInterfaceOrientationLandscapeRight];
}

三梆造、要實(shí)現(xiàn)其他頁(yè)面都是豎屏缴守，到某一個(gè)頁(yè)面變?yōu)闄M屏

1.創(chuàng)建子類CusNavigationController繼承UINavigationController并寫入如下方法

//支持旋轉(zhuǎn)
-(BOOL)shouldAutorotate{
    return [self.topViewController shouldAutorotate];
}

//支持的方向
-(UIInterfaceOrientationMask)supportedInterfaceOrientations{
    return [self.topViewController supportedInterfaceOrientations];
}

2.創(chuàng)建子類BaseViewController繼承UIViewController并寫入如下方法

//支持旋轉(zhuǎn)
-(BOOL)shouldAutorotate{
    return YES;
}

//支持的方向 因?yàn)榻缑鍭我們只需要支持豎屏
- (UIInterfaceOrientationMask)supportedInterfaceOrientations {
    return UIInterfaceOrientationMaskPortrait;
}

3.控制器繼承自BaseViewController并實(shí)現(xiàn)以下方法

//支持旋轉(zhuǎn)
-(BOOL)shouldAutorotate{
    return YES;
}

//支持的方向 因?yàn)榻缑鍭我們只需要支持豎屏
- (UIInterfaceOrientationMask)supportedInterfaceOrientations {
    return UIInterfaceOrientationMaskLandscapeRight|UIInterfaceOrientationMaskPortrait|UIInterfaceOrientationMaskLandscapeLeft;
}

四葬毫、如果Masonry涉及到NavigationBar的顯示刷新問(wèn)題可以??

[self.navigationController.navigationBar.superview layoutSubviews];

??警告 同時(shí)使用UIDeviceOrientationDidChangeNotification監(jiān)聽屏幕旋轉(zhuǎn)方向并手動(dòng)設(shè)置屏幕物理方向會(huì)出現(xiàn)死循環(huán)

參考文章
https://my.oschina.net/wolx/blog/387315
http://www.reibang.com/p/37ea49830d11
https://www.cnblogs.com/niit-soft-518/p/5611298.html
https://blog.csdn.net/goods_boy/article/details/72631424