1

我在使用空投分享视频时遇到了一些麻烦。所以,我正在使用AssetLibrary这样的:

else if (conformsToVideo) {

        UIAlertView *alert = [[UIAlertView alloc]  initWithTitle:@"Asset Loaded" message:@"Video One Loaded"
        delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil];
        [alert show];

        self.mediaAsset = [AVAsset assetWithURL:[info objectForKey:UIImagePickerControllerMediaURL]];

        UIActivityViewController * controller = [[UIActivityViewController alloc] initWithActivityItems:@[self.mediaAsset] applicationActivities:nil];
        [self presentViewController:controller animated:YES completion:nil];
}

也许这不是这样做的方法,我不知道,我也没有找到任何关于它的教程,所以如果你有,我很乐意接受。

现在我的问题是,当我选择一个视频时一切正常,直到UIActivityViewController弹出,我没有任何错误,但我不能使用空投(nor any other service BTW),我唯一能做的就是按下Cancel button.UIAVController

我正在使用iOS 8.3.

谢谢你的帮助

4

1 回答 1

0

好的,最终我找到了一个答案,也许不是最好的,但我把它放在那里以防它帮助某人,因为我在与空投共享视频方面没有找到太多:

NSURL * path = [info objectForKey:UIImagePickerControllerReferenceURL];
BOOL conformsToVideo = (UTTypeConformsTo((__bridge_retained CFStringRef) mediaType, kUTTypeAudiovisualContent));

if (conformsToVideo) {

            [self.library assetForURL:path
                          resultBlock:^(ALAsset *asset) {
                              ALAssetRepresentation* assetRepresentation = [asset defaultRepresentation];
                              NSString* outputDirectory = [NSString stringWithFormat:@"%@", NSTemporaryDirectory()];
                              NSString* pathToCopy = [outputDirectory stringByAppendingPathComponent:[NSString stringWithFormat:@"%@", assetRepresentation.filename]];

                              NSUInteger size = (NSUInteger)assetRepresentation.size;
                              NSMutableData* data = [NSMutableData dataWithLength:size];

                              NSUInteger bytesRead = [assetRepresentation getBytes:data.mutableBytes fromOffset:0 length:size error:nil];
                              NSURL * url = nil;
                              if ([data writeToFile:pathToCopy atomically:YES])
                              {
                                  NSLog(@"Ok");
                                  url = [NSURL fileURLWithPath:pathToCopy];
                                  UIActivityViewController * controller = [[UIActivityViewController alloc] initWithActivityItems:@[url] applicationActivities:nil];
                                  [self presentViewController:controller animated:YES completion:nil];
                              }
                          } failureBlock:^(NSError *error) {
                              NSLog(@"Failure to use the ALAsset");

                          }
             ];
        }

我找到了使用这个问题的解决方案:Share a video from assets library with AirDrop failed 我只是将前面的步骤添加到那里给出的代码中,希望它有用。

于 2015-09-03T05:11:13.453 回答