IOS)图片扩展无法保存更改问题

Question

我正在制作照片扩展程序，但是当我尝试保存更改时(点击完成按钮)。

Alert Message Says "Unable to Save Changes" - 'An Error occurred while saving. Please try again later.'

这是我的代码 finishContentEditingWithCompletionHandler:completionHandler

- (void)finishContentEditingWithCompletionHandler:(void (^)(PHContentEditingOutput *))completionHandler {
    // Update UI to reflect that editing has finished and output is being rendered.

    // Render and provide output on a background queue.
    dispatch_async(dispatch_get_global_queue(QOS_CLASS_DEFAULT, 0), ^{
        // Create editing output from the editing input.
        PHContentEditingOutput *output = [[PHContentEditingOutput alloc] initWithContentEditingInput:self.input];
        NSURL *originalImageURL = self.input.fullSizeImageURL;
        //Apply filter
        CIFilter *appliedFilter = [CIFilter filterWithLUT:self.presetFilterNameArray[self.currentAppliedFilterIndex] originalLUT:@"LUT-ORG-512" dimension:64 alpha:self.filterAlphaSlider.value CIContext:self.ciContext];
        UIImage *filteredOriginalImage = [self filterApply:[UIImage imageWithContentsOfFile:originalImageURL.path] filter:appliedFilter];
        //Apply orientation
        filteredOriginalImage = [UIImage imageWithCGImage:filteredOriginalImage.CGImage scale:filteredOriginalImage.scale orientation:self.input.fullSizeImageOrientation];

        // Provide new adjustments and render output to given location.
        NSData *archiver = [NSKeyedArchiver archivedDataWithRootObject:self.presetFilterNameArray[self.currentAppliedFilterIndex]];
        output.adjustmentData = [[PHAdjustmentData alloc] initWithFormatIdentifier:@"com.fantagram.BetterAndBetter.TKPhotoExtension" formatVersion:@"1.0" data:archiver];

        NSData *renderedJPEGData = UIImageJPEGRepresentation(filteredOriginalImage, 1.0f);
        if([renderedJPEGData writeToURL:output.renderedContentURL atomically:YES]){
            NSLog(@"success to write");
        }
        else{
            NSLog(@"fail to write");
        }

        NSLog(@"%@", output);
        // Call completion handler to commit edit to Photos.
        completionHandler(output);

        // Clean up temporary files, etc.
    });
}

Previous Answer 对于这个问题，有人说渲染到 NSData 时，图像的大小需要与 originalImage 不同。所以我尝试了这个，但没有成功。

还有一件事。

有什么方法可以从照片扩展程序打开主机应用程序吗？

self.extensionContext openURL: didn't work(As I know of It only works in Today Extension.)

UIResponder *responder = self;
        while(responder){
            if([responder respondsToSelector:@selector(openURL:)]){
                dispatch_async(dispatch_get_main_queue(), ^{
                       [responder performSelector:@selector(openURL:) withObject:[NSURL URLWithString:(MY_URL_Schemes)]];     
                });
            }
            responder = [responder nextResponder];
        }

上面的代码也没有用。当我使用 share extension 时它起作用了。

谢谢。

Answer 1

试试这个，

转到“设置”，然后转到“照片和相机”。我将选项从优化 iPhone 存储更改为下载并保留原件。

我认为通常在优化设置下照片会下载回原始照片，然后您就可以编辑了。

希望对你有所帮助。