解决横屏时调用系统相册崩溃的问题

之前开发中遇到的一个需求，要让APP强制横屏，但是在调用系统相册的时候会崩溃，原因是这样的

reason: 'Supported orientations has no common orientation with the application, and [PUUIAlbumListViewController shouldAutorotate] is returning YES'　　

因为系通相册是默认支持竖屏，如果要横屏时打开系统相册，你要在AppDelegate.m中添加如下方法

-(UIInterfaceOrientationMask)application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(UIWindow *)window

{

    if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone)//iPhone

        return UIInterfaceOrientationMaskAll;

    else//iPad

        return UIInterfaceOrientationMaskAllButUpsideDown;

}

然后为UIImagePickerController添加拓展

- (BOOL)shouldAutorotate{

    return NO;

}

- (NSUInteger)supportedInterfaceOrientations{

    return UIInterfaceOrientationMaskLandscape;

}