Objective c 使用未声明的标识符'；导入菜单'；

在编译时，我在objective c中遇到了上述错误。我不知道为什么会出现这种情况

下面是编码文件

Test.m文件

- (void)displayDocumentPicker:(NSArray *)UTIs withSenderRect:(CGRect)senderFrame
{
    UIViewController * vc = nil;
    [importMenu addOptionWithTitle:@"Photos & Videos" image:nil order:UIDocumentMenuOrderFirst handler:^{

        UIImagePickerController *imagePickerController = [[UIImagePickerController alloc] init];

        imagePickerController.sourceType = UIImagePickerControllerSourceTypeSavedPhotosAlbum;
        imagePickerController.mediaTypes = [UIImagePickerController availableMediaTypesForSourceType:imagePickerController.sourceType];
        imagePickerController.allowsEditing = NO;
        imagePickerController.videoQuality = UIImagePickerControllerQualityTypeHigh;

        imagePickerController.delegate = self;
        [self.viewController presentViewController:imagePickerController animated:YES completion:nil];

    }];
    if (!IsAtLeastiOSVersion(@"11.0")) {
        vc = [[UIDocumentMenuViewController alloc] initWithDocumentTypes:UTIs inMode:UIDocumentPickerModeImport];
        ((UIDocumentMenuViewController *)vc).delegate = self;
        vc.popoverPresentationController.sourceView = self.viewController.view;
        if (!CGRectEqualToRect(senderFrame, CGRectZero)) {
            vc.popoverPresentationController.sourceRect = senderFrame;
        }
    } else {
        vc = [[UIDocumentPickerViewController alloc] initWithDocumentTypes:UTIs inMode:UIDocumentPickerModeImport];
        ((UIDocumentPickerViewController *)vc).delegate = self;
        vc.modalPresentationStyle = UIModalPresentationFullScreen;
    }

    [self.viewController presentViewController:vc animated:YES completion:nil];

}

#import <Foundation/Foundation.h>
#import <Cordova/CDVPlugin.h>
#import <AssetsLibrary/AssetsLibrary.h>

@interface FilePicker : CDVPlugin <UIDocumentMenuDelegate,UIDocumentPickerDelegate,UIImagePickerControllerDelegate,UINavigationControllerDelegate>

@property (strong, nonatomic) CDVPluginResult * pluginResult;
@property (strong, nonatomic) CDVInvokedUrlCommand * command;

- (void)isAvailable:(CDVInvokedUrlCommand*)command;
- (void)pickFile:(CDVInvokedUrlCommand*)command;

@end

Test.h文件

- (void)displayDocumentPicker:(NSArray *)UTIs withSenderRect:(CGRect)senderFrame
{
    UIViewController * vc = nil;
    [importMenu addOptionWithTitle:@"Photos & Videos" image:nil order:UIDocumentMenuOrderFirst handler:^{

        UIImagePickerController *imagePickerController = [[UIImagePickerController alloc] init];

        imagePickerController.sourceType = UIImagePickerControllerSourceTypeSavedPhotosAlbum;
        imagePickerController.mediaTypes = [UIImagePickerController availableMediaTypesForSourceType:imagePickerController.sourceType];
        imagePickerController.allowsEditing = NO;
        imagePickerController.videoQuality = UIImagePickerControllerQualityTypeHigh;

        imagePickerController.delegate = self;
        [self.viewController presentViewController:imagePickerController animated:YES completion:nil];

    }];
    if (!IsAtLeastiOSVersion(@"11.0")) {
        vc = [[UIDocumentMenuViewController alloc] initWithDocumentTypes:UTIs inMode:UIDocumentPickerModeImport];
        ((UIDocumentMenuViewController *)vc).delegate = self;
        vc.popoverPresentationController.sourceView = self.viewController.view;
        if (!CGRectEqualToRect(senderFrame, CGRectZero)) {
            vc.popoverPresentationController.sourceRect = senderFrame;
        }
    } else {
        vc = [[UIDocumentPickerViewController alloc] initWithDocumentTypes:UTIs inMode:UIDocumentPickerModeImport];
        ((UIDocumentPickerViewController *)vc).delegate = self;
        vc.modalPresentationStyle = UIModalPresentationFullScreen;
    }

    [self.viewController presentViewController:vc animated:YES completion:nil];

}

#import <Foundation/Foundation.h>
#import <Cordova/CDVPlugin.h>
#import <AssetsLibrary/AssetsLibrary.h>

@interface FilePicker : CDVPlugin <UIDocumentMenuDelegate,UIDocumentPickerDelegate,UIImagePickerControllerDelegate,UINavigationControllerDelegate>

@property (strong, nonatomic) CDVPluginResult * pluginResult;
@property (strong, nonatomic) CDVInvokedUrlCommand * command;

- (void)isAvailable:(CDVInvokedUrlCommand*)command;
- (void)pickFile:(CDVInvokedUrlCommand*)command;

@end

#导入
#进口
#进口
@接口文件选择器：CDVPlugin
@属性（强，非原子）CDVPluginResult*pluginResult；
@属性（强，非原子）CDVInvokedUrlCommand*命令；
-（void）可用：（CDVInvokedUrlCommand*）命令；
-（void）pickFile:（CDVInvokedUrlCommand*）命令；
@结束

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是否需要在Test.h文件中添加任何标题？

好的，您从未定义过importMenu

---

添加类似于

UIDocumentMenuViewController*importMenu=UIDocumentMenuViewController（）的内容如何，或者可能是未弃用的类
UIDocumentPickerViewController
？
在哪里声明importMenu？