[英]Screenshot doesn't appear at Photos app (iOS obj-c)
我正在尝试使用以下代码保存我的应用的屏幕截图:
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");
它记录了Saved
,但图像未出现在“照片”应用中。
documentsDirectory
: /var/mobile/Containers/Data/Application/003D7989-D88E-48FF-A3C5-86A340C6F077/Documents
我做错了什么? 感谢您的回复。
尝试使用此代码在“照片”应用中保存图像
NSData * data = UIImagePNGRepresentation(image);
UIImageWriteToSavedPhotosAlbum(compressedPNGImage,
self,
@selector(thisImage:hasBeenSavedInPhotoAlbumWithError:usingContextInfo:),
NULL);
那么您应该实现以下选择器
- (void)thisImage:(UIImage *)image hasBeenSavedInPhotoAlbumWithError:(NSError *)error usingContextInfo:(void*)ctxInfo
{
if (error)
{
// not saved
}
else
{
// saved
}
}
最后,请确保在信息目标设置中添加“隐私-图片库使用说明”键
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