已经有了使用 ALAssetsLibrary 将图像保存到特定文件夹的答案。但它在iOS 9.0中已被弃用并发出警告“使用Photos框架中的PHPhotoLibrary”。
当我将ALAssetsLibrary更改为PHPhotoLibrary时,此时会收到错误。
[self.library saveImage:image toAlbum:@"myAlbum" withCompletionBlock:^(NSError *error) {
if (error!=nil) {
NSLog(@"Big error: %@", [error description]);
}
}];
*误差
No visible @interface for 'PHPhotoLibrary' declares the selector 'saveImage:toAlbum:withCompletionBlock:'
如何将图像保存到特定文件夹中使用 PHPhotoLibrary (或)任何其他解决方案。
提前谢谢。
答案 0 :(得分:3)
我还没有使用过PHPhotoLibrary
但是我知道使用本地文档目录在Obj-C中保存照片的老派方式:
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentDirectory = paths.firstObject;
NSData *imageData = UIImagePNGRepresentation(image);
NSString *imagePath = [NSString stringWithFormat:@"%@/%@",documentsDirectory,imageFolder];
BOOL isDir;
NSFileManager *fileManager= [NSFileManager defaultManager];
if(![fileManager fileExistsAtPath:imagePath isDirectory:&isDir])
if(![fileManager createDirectoryAtPath:imagePath withIntermediateDirectories:YES attributes:nil error:NULL])
NSLog(@"Error: folder creation failed %@", documentsDirectory);
[[NSFileManager defaultManager] createFileAtPath:[NSString stringWithFormat:@"%@/%@", imagePath, imageName] contents:nil attributes:nil];
[imageData writeToFile:[NSString stringWithFormat:@"%@/%@", imagePath, imageName] atomically:YES];
从NSDocumentDirectory中检索该图像:
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentDirectory = paths.firstObject;
NSString *fullPath = [NSString stringWithFormat:@"%@/%@", documentDirectory, imagePath]; // image path is same as above
if ([[NSFileManager defaultManager] fileExistsAtPath:fullPath]) {
UIImage *image = [UIImage imageWithContentsOfFile:fullPath];
return image;
} else {
return nil;
}
答案 1 :(得分:0)
因为没有像这样命名的方法。
要将图像保存到PHPhotoLibrary,您需要创建一个资产。见
Which PHAssetCollection to use for saving an image?
详细信息。