（转）iOS 某个界面支持旋转-白红宇

原文地址：http://blog.csdn.net/littleSun_zheng/article/details/50748698

步骤1、

设置 targets——>general——>device Orientation

步骤2、

<1>在 AppDelegate.h 里面 加一个属性  @property (nonatomic,assign)BOOL allowRotation;//这个属性标识屏幕是否允许旋转复制代码

<2>在 AppDelegate.m 里面-(UIInterfaceOrientationMask)application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(UIWindow *)window {    if (self.allowRotation) {//当允许时，支持所有方向        return UIInterfaceOrientationMaskAll;    }    //否则 就只有竖屏    return UIInterfaceOrientationMaskPortrait;}复制代码

步骤3、在你想要支持旋转的控制器需要导入#import "AppDelegate.h"

- (void)viewWillAppear:(BOOL)animated {        [super viewWillAppear:animated];        self.navigationController.navigationBarHidden = YES;    //改变AppDelegate的appdelegete.allowRotation属性     AppDelegate *appdelegete = (AppDelegate *)[UIApplication sharedApplication].delegate;    appdelegete.allowRotation = YES;}- (void)viewWillDisappear:(BOOL)animated{    [super viewWillDisappear:animated];    self.navigationController.navigationBarHidden = NO;    AppDelegate *appdelegete = (AppDelegate *)[UIApplication sharedApplication].delegate;    appdelegete.allowRotation = NO;}复制代码

步骤4、但在横屏播放的状态下直接返回上个控制器（pop）的时候. 发现那个控制器也是横屏的，假设上个控制器名字叫SimpleVC,在SimpleVC.m里添加

//屏幕方向操作-(UIInterfaceOrientationMask)supportedInterfaceOrientations{    return UIInterfaceOrientationMaskPortrait;}复制代码