ALAuth检查不起作用

Question

我正在尝试检查用户是否允许我的应用程序访问照片的权限（仅限Objective-C），但我收到以下错误：

Error 1: initializer element is not compile-time constant
Error 2: Excepted identifier or '('

以下是代码：

#import <UIKit/UIKit.h>
#import <AssetsLibrary/AssetsLibrary.h>

//(Error 1) ALAuthorizationStatus status = [ALAssetsLibrary authorizationStatus];

//(Error 2) if (status != ALAuthorizationStatusAuthorized) {
    //show alert for asking the user to give permission

}

这些代码在我的.m文件中，如何解决此问题（请包含代码）？

Answer 1

哎呀，我犯了一个小错误。我忘了添加viewdidload

#import <UIKit/UIKit.h>
#import "BaseViewController.h"
#import <AssetsLibrary/AssetsLibrary.h>

@interface ViewController14 ()

@end

@implementation ViewController14
- (void)viewDidLoad
{
    [super viewDidLoad];
    ALAuthorizationStatus status = [ALAssetsLibrary authorizationStatus];

    if (status != ALAuthorizationStatusAuthorized) {
        //show alert for asking the user to give permission

    }
}

@end