IPAD下使用相册横屏异常的解决

原因大致是由于UIImagePickerController默认支持的是竖屏的原因,实现原理在打开相册前设置屏幕可翻转，关闭相册后设置为横屏模式

解决步骤

1,为 UIImagePickerController 添加类别如下

@interface UIImagePickerController (LandScapeImagePicker)

- (BOOL)shouldAutorotate;

- (NSUInteger)supportedInterfaceOrientations;

@end

#import "UIImagePickerController+LandScapeImagePicker.h"

@implementation UIImagePickerController (LandScapeImagePicker)

- (BOOL)shouldAutorotate {

    return YES;

}

- (NSUInteger)supportedInterfaceOrientations {

    returnUIInterfaceOrientationMaskAll;

}

@end

同时在打开相册控制类中添加如下控制代码

-(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary<NSString *,id> *)info

{

    bAlbumListViewStatus =NO;

    [picker dismissViewControllerAnimated:YEScompletion:nil];

    UIImage *image = [infoobjectForKey:UIImagePickerControllerEditedImage];

    

    //[self uploadImageWithImage:image];

    

}

-(void)imagePickerControllerDidCancel:(UIImagePickerController *)picker

{

     bAlbumListViewStatus =NO;

    [picker dismissViewControllerAnimated:NOcompletion:nil];

}

弹出相册的地方代码修改如下

  UIImagePickerController *picker = [[UIImagePickerControlleralloc] init];

    

    picker.delegate         = self;

    picker.sourceType       = sourceType;

    picker.allowsEditing    = YES;

    bAlbumListViewStatus    =YES;//

    [selfpresentViewController:picker animated:YEScompletion:nil];

2,在app delegate里添加方向支持

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

{

    if (bAlbumListViewStatus)//全局变量，定义是否打开相册

        returnUIInterfaceOrientationMaskAll;

    else

        returnUIInterfaceOrientationMaskLandscapeLeft;

}

完成如上后即可解决了