尝试使用下面的代码将图像保存在 iphone 画廊中,但在模拟器中工作正常,而不是在 iphone 中。
-(void)saveTkt
{
UIWindow *keyWindow = [[UIApplication sharedApplication] keyWindow];
CGRect rect = [keyWindow bounds];
UIGraphicsBeginImageContext(rect.size);
CGContextRef context = UIGraphicsGetCurrentContext();
[keyWindow.layer renderInContext:context];
UIImage *img = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
NSData * data = UIImagePNGRepresentation(img);
[data writeToFile:@"f.png" atomically:YES];
UIImageWriteToSavedPhotosAlbum(img, self, @selector(thisImage:hasBeenSavedInPhotoAlbumWithError:usingContextInfo:), nil);
}
编辑后的代码
-(void)saveTkt
{
UIWindow *keyWindow = [[UIApplication sharedApplication] keyWindow];
CGRect rect = [keyWindow bounds];
UIGraphicsBeginImageContext(rect.size);
CGContextRef context = UIGraphicsGetCurrentContext();
[keyWindow.layer renderInContext:context];
UIImage *img = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
NSData * data = UIImagePNGRepresentation(img);
[data writeToFile:@"f.png" atomically:YES];
ALAuthorizationStatus status = [ALAssetsLibrary authorizationStatus];
if (status != ALAuthorizationStatusAuthorized) {
//show alert for asking the user to give permission
}
//UIImageWriteToSavedPhotosAlbum(img, self, @selector(thisImage:hasBeenSavedInPhotoAlbumWithError:usingContextInfo:), nil);
ALAssetsLibrary *library = [[ALAssetsLibrary alloc] init];
[library writeImageToSavedPhotosAlbum:[img CGImage] orientation:(ALAssetOrientation)[img imageOrientation] completionBlock:^(NSURL *assetURL, NSError *error){
if (error) {
// TODO: error handling
UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@"error" message:[error localizedDescription] delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil];
[alert show];
} else {
// TODO: success handling
UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@"alert" message:@"Saved suceesfully in photos album." delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil];
[alert show];
}
}];
ALAssetsLibraryGroupsEnumerationResultsBlock assetGroupEnumerator =
^(ALAssetsGroup *assetGroup, BOOL *stop) {
if (assetGroup != nil) {
// do somthing
}
};
ALAssetsLibraryAccessFailureBlock assetFailureBlock = ^(NSError *error) {
NSLog(@"Error enumerating photos: %@",[error description]);
};
NSUInteger groupTypes = ALAssetsGroupAll;
[library enumerateGroupsWithTypes:groupTypes usingBlock:assetGroupEnumerator failureBlock:assetFailureBlock];
}
最佳答案
添加框架 Assets 库
ALAssetsLibrary *library = [[ALAssetsLibrary alloc] init];
[library writeImageToSavedPhotosAlbum:[image CGImage] orientation:(ALAssetOrientation)[image imageOrientation] completionBlock:^(NSURL *assetURL, NSError *error){
if (error) {
// TODO: error handling
} else {
// TODO: success handling
}
}];
[library release];
关于iphone - 图像保存在模拟器图库中,但不保存在 iPhone 图库中,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/17441559/