Question

Im 采用下列方法,将一个合并的图像保存到Peit光图书馆:

UIImageWriteToSavedPhotosAlbum(viewImage, self, @selector(savedPhotoImage:didFinishSavingWithError:contextInfo:), nil);

利用:

- (void) savedPhotoImage:(UIImage*)image didFinishSavingWithError:(NSError *)error contextInfo: (void *)contextInfo { NSLog(@"%@", [error localizedDescription]);
NSLog(@"info: %@", contextInfo);}

What I would like to get is the path for where the image has been saved, so I can add it to an array which will be used to call up a list of saved items elsewhere in the app.

When I load the image using the picker it displays the path info. However when I save a created image, I can t find where to pull the saved image path.

I have search about the web, but most examples stop at the callback with a nice message to say the image was saved successfully. I would just like to be able to know where it was saved.

我的理解是,一种方法可能是开始界定我自己的道路,但是,由于这种方法对我来说,我只是希望它能够告诉我,它能够拯救到什么地方。

Answer 1

I finally found out the answer. Apparently the UIImage methods strip out metadata and so using UIImageWriteToSavedPhotosAlbum is no good.

但是,第4期果 Apple在一个新的框架内处理称为ALAssetsLibrary的照片图书馆。

首先,你需要正确点击目标,在建设部分,在你的项目中加上“阿卜顿框架”,而后边的“icon”小数。

之后添加“AssetsLibrary/AssetsLibrary.h”的“编号”;,以列入你的班子的主编。

最后,您可以使用以下法典:

UIImage *viewImage = YOUR UIIMAGE  // --- mine was made from drawing context
ALAssetsLibrary *library = [[ALAssetsLibrary alloc] init];  
// Request to save the image to camera roll  
[library writeImageToSavedPhotosAlbum:[viewImage CGImage] orientation:(ALAssetOrientation)[viewImage imageOrientation] completionBlock:^(NSURL *assetURL, NSError *error){  
    if (error) {  
        NSLog(@"error");  
    } else {  
            NSLog(@"url %@", assetURL);  
    }  
}];  
[library release];

而这又使你刚刚挽救了档案。

Answer 2

我的法典

-(void) imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info{
    UIImage *image = [info valueForKey:UIImagePickerControllerOriginalImage];

    imageURL = nil;

    ALAssetsLibraryWriteImageCompletionBlock completeBlock = ^(NSURL *assetURL, NSError *error){
        if (!error) {  
            #pragma mark get image url from camera capture.
            imageURL = [NSString stringWithFormat:@"%@",assetURL];

        }  
    };

    if(image){
        ALAssetsLibrary *library = [[ALAssetsLibrary alloc] init];
        [library writeImageToSavedPhotosAlbum:[image CGImage] 
                                  orientation:(ALAssetOrientation)[image imageOrientation] 
                              completionBlock:completeBlock];
    }
}

缩略语

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

typedef void (^ALAssetsLibraryWriteImageCompletionBlock)(NSURL *assetURL, NSError *error);

如果您不了解如何获得<条码>和带;AssetsLibrary/AssetsLibrary.h>,请添加现有的框架(AssetsLibrary.framework)。

Answer 3

保险 F 问题的关键部分缺失,找回了道路:

在这里,一部法典规定:

- (void)processImage:(UIImage*)image type:(NSString*)mimeType forCallbackId:(NSString*)callbackId
    {
        __block NSString* localId;

        // Add it to the photo library
        [[PHPhotoLibrary sharedPhotoLibrary] performChanges:^{
            PHAssetChangeRequest *assetChangeRequest = [PHAssetChangeRequest creationRequestForAssetFromImage:image];

            localId = [[assetChangeRequest placeholderForCreatedAsset] localIdentifier];
        } completionHandler:^(BOOL success, NSError *err) {
            if (!success) {
                NSLog(@"Error saving image: %@", [err localizedDescription]);
            } else {
                PHFetchResult* assetResult = [PHAsset fetchAssetsWithLocalIdentifiers:@[localId] options:nil];
                PHAsset *asset = [assetResult firstObject];
                [[PHImageManager defaultManager] requestImageDataForAsset:asset
                                                                  options:nil
                                                            resultHandler:^(NSData *imageData, NSString *dataUTI, UIImageOrientation orientation, NSDictionary *info) {
                    NSURL *fileUrl = [info objectForKey:@"PHImageFileURLKey"];
                    if (fileUrl) {
                        NSLog(@"Image path: %@", [fileUrl relativePath]);
                    } else {
                        NSLog(@"Error retrieving image filePath, heres whats available: %@", info);
                    }
                }];
            }
        }];
    }

Answer 4

快速版本

 ALAssetsLibrary().writeImageToSavedPhotosAlbum(editedImage.CGImage, orientation: ALAssetOrientation(rawValue: editedImage.imageOrientation.rawValue)!,
                completionBlock:{ (path:NSURL!, error:NSError!) -> Void in
                    print("(path)")
            })

以及你档案中的“进口ALAssetsLibrary”。

Project-> Building Phases -> Link binary -> PropertyLibrary.framework

Answer 5

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingImage:(UIImage *)img editingInfo:(NSDictionary *)editInfo {

    RandomIndexnew = arc4random() % 3;
    if(RandomIndexnew == 0)
    {
        nameStr =[NSString stringWithFormat:@"jpg"];
        textFieldNormalFile_type.text =[NSString stringWithFormat:@"jpg"];
    }
    else if(RandomIndexnew = 1)
    {
        nameStr =[NSString stringWithFormat:@"gif"];
        textFieldNormalFile_type.text =[NSString stringWithFormat:@"GIF"];
    }
    else if(RandomIndexnew = 2)
    {
        nameStr =[NSString stringWithFormat:@"jpg"];
        textFieldNormalFile_type.text =[NSString stringWithFormat:@"JPG"];
    }

    RandomIndex = arc4random() % 20;
    NSString *nameStr1 =[NSString stringWithFormat:@"Image%i",RandomIndex];
    textFieldNormalFile_name.text =[NSString stringWithFormat:@"%@.%@",nameStr1,nameStr];

    newFilePath = [NSHomeDirectory() stringByAppendingPathComponent: textFieldNormalFile_name.text];
    imageData = UIImageJPEGRepresentation(img, 1.0);
    if (imageData != nil) {
        NSLog(@"HERE [%@]", newFilePath);
        [imageData writeToFile:newFilePath atomically:YES];
    }
    image.image =[UIImage imageNamed:newFilePath];
    NSLog(@"newFilePath:%@",newFilePath);
    path.text =[NSString stringWithFormat:newFilePath];
    NSLog(@"path.text :%@",path.text);
}

Answer 6

ALAssets Library被贬低。

这是你应当做到的:

#import <Photos/Photos.h>

UIImage *yourImage;

[[PHPhotoLibrary sharedPhotoLibrary] performChanges:^{
    [PHAssetChangeRequest creationRequestForAssetFromImage:yourImage];
} completionHandler:^(BOOL success, NSError *error) {
    if (success) {
        NSLog(@"Success");
    } else {
        NSLog(@"write error : %@",error);
    }
}];

Answer 7

页: 1 F 答案

        PHPhotoLibrary.shared().performChanges({
                PHAssetChangeRequest.creationRequestForAsset(from: image)
            }) { (success, error) in
                if success {

                } else {
                }
            }

Answer 8

快速版本

            var localId = ""
            PHPhotoLibrary.shared().performChanges({
                let assetChangeRequest:PHAssetChangeRequest = PHAssetChangeRequest.creationRequestForAsset(from: chosenImage)
                localId = assetChangeRequest.placeholderForCreatedAsset!.localIdentifier
            }) { (success, error) in
                let assetResult:PHFetchResult = PHAsset.fetchAssets(withLocalIdentifiers: [localId], options: nil)
                let asset:PHAsset = assetResult.firstObject!
                PHImageManager.default().requestImageData(for: asset, options: nil) { (imageData, dataUTI, orientation, info) in
                    if let url:URL = info?["PHImageFileURLKey"] as? URL
                    {
                        print("(url)")
                        
                    }
                    
                }
                
            }

友情链接