屏幕截图未出现在“照片”应用中 (iOS obj-c)

Question

我正在尝试使用下一个代码保存我的应用程序的屏幕截图：

UIView* view = [[[[UIApplication sharedApplication] keyWindow] subviews] lastObject];
UIGraphicsBeginImageContext(view.bounds.size);
[view.layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
NSData * data = UIImagePNGRepresentation(image);

NSURL* documentsDirectory = [[[NSFileManager defaultManager] URLsForDirectory:NSDocumentDirectory inDomains:NSUserDomainMask] lastObject];
NSString* filename = [NSString stringWithUTF8String: @"screenshot.png"];
NSString* path =[NSString stringWithFormat:@"%@/%@",[documentsDirectory path], filename];

BOOL saved = [[NSFileManager defaultManager] createFileAtPath:path contents:data attributes:nil];
NSLog(saved ? @"Saved" : @"Not saved");

它记录 Saved，但图像没有出现在照片应用程序中。

documentsDirectory: /var/mobile/Containers/Data/Application/003D7989-D88E-48FF-A3C5-86A340C6F077/Documents

我做错了什么？感谢回复。

Answer 1

尝试使用此代码在照片应用程序中保存图像

NSData * data = UIImagePNGRepresentation(image);
UIImageWriteToSavedPhotosAlbum(compressedPNGImage,
                               self,
                               @selector(thisImage:hasBeenSavedInPhotoAlbumWithError:usingContextInfo:),
                               NULL);

那么你应该按照下面的方式实现上面的选择器

- (void)thisImage:(UIImage *)image hasBeenSavedInPhotoAlbumWithError:(NSError *)error usingContextInfo:(void*)ctxInfo
{
    if (error)
    {
        // not saved
    }
    else
    {
        // saved
    }
}

最后，一定要在信息目标设置中添加"Privacy - Photo Library Usage Description"键

屏幕截图未出现在“照片”应用中 (iOS obj-c)

Screenshot doesn't appear at Photos app (iOS obj-c)

screenshot

objective-c

ios