Android 上的 Facebook 分享视频异常 "ShareVideo must reference a video that is on the device"

Question

我正在使用 Facebook Android sdk 4.6.0 到 Gradle。

根据 Sharing on Facebook guidenline 配置 facebook 后，我尝试从移动目录上传视频，但在调用 sharedialog.show 后出现异常 "ShareVideo must reference a video that is on the device"。通过`onError（FacebookException 异常）回调向我报告异常。

/**first checking if file exist than execute code, file exits and code execute but after executing callback with exception "Share Video must reference a video that is on the device" occurs
 **/      private void shareOnFacebook() {
                    File dir = new File(Environment.getExternalStorageDirectory(),
                            "directory");
                    File video = new File(dir, "Video.mp4");
                    if (video.exists()) {//if video file exist
                        Uri videoFileUri = Uri.parse(video.getPath());
                        ShareVideo sv = new ShareVideo.Builder()
                                .setLocalUrl(videoFileUri)
                                .build();
                        ShareVideoContent content = new ShareVideoContent.Builder()
                                .setVideo(sv)
                                .build();
                        shareDialog.show(content); //show facebook sharing screen with video
                    }
                }

Answer 1

这里抛出异常： https://github.com/facebook/facebook-android-sdk/blob/master/facebook/src/com/facebook/share/internal/ShareContentValidation.java;

 if (!Utility.isContentUri(localUri) && !Utility.isFileUri(localUri)) {
throw new FacebookException("ShareVideo must reference a video that is on the device");}

public static boolean isContentUri(final Uri uri) {
return (uri != null) && ("content".equalsIgnoreCase(uri.getScheme()));
}

public static boolean isFileUri(final Uri uri) {
return (uri != null) && ("file".equalsIgnoreCase(uri.getScheme())); 
}

如您所见，fb 共享 sdk 正在检查 uri 是否有方案。 在您的情况下，当您从 video.getPath 创建 uri 时，方案为空。你应该做的是从视频文件创建 uri:

Uri videoFileUri = Uri.fromFile(视频);