Question

我正在玩新的iOS 8照片框架，试图编辑我的库中的现有照片然后替换它但它没有被替换，即使我能看到所有成功的日志消息我＆＃ 39; ve set。

这是我的代码：

UIImage *output = [self.imageView.image appendDateWithLabel:label];
self.imageView.image = output;

// self.info was retrieve by the UIImagePickerController delegate method
NSURL *assetURL = self.info[UIImagePickerControllerReferenceURL];
PHFetchResult *result = [PHAsset fetchAssetsWithALAssetURLs:@[assetURL] options:nil];
PHAsset *asset = result.firstObject;
if ([asset canPerformEditOperation:PHAssetEditOperationContent])
{
    [asset requestContentEditingInputWithOptions:nil completionHandler:^(PHContentEditingInput *contentEditingInput, NSDictionary *info) {

        PHContentEditingOutput *contentEditingOutput = [[PHContentEditingOutput alloc] initWithContentEditingInput:contentEditingInput];
        NSData *outputData = UIImagePNGRepresentation(output);
        BOOL wrote = [outputData writeToURL:contentEditingOutput.renderedContentURL options:NSDataWritingAtomic error:nil];

        if (wrote)
        {
            [[PHPhotoLibrary sharedPhotoLibrary] performChanges:^{
                PHAssetChangeRequest *request = [PHAssetChangeRequest changeRequestForAsset:asset];
                request.contentEditingOutput = contentEditingOutput;

            } completionHandler:^(BOOL success, NSError *error) {
                // console output : 1
                NSLog(@"success : %@", @(success));
                // console output : nil
                NSLog(@"error : %@", error);
            }];
        }
    }];
}

我没有替换，而是尝试创建修改后的副本。这很有效，我可以在我的图书馆看到新修改过的照片。

有人已经遇到过这个问题吗？

Answer 1

为了编辑照片，似乎必须填写adjustementData对象的PHContentEditingOutput属性。

PHAdjustmentData *adjustmentData = [[PHAdjustmentData alloc] initWithFormatIdentifier:@"AdjustementDataIdentifier" formatVersion:@"1.0" data:nil]

ios 8照片框架 - 替换不起作用的照片

1 个答案: