如何将共享的首选项从即时应用程序传输到完整应用程序

我知道我们可以使用上面提到的Google Instant的存储API将数据从Instant应用程序传输到完整的应用程序。 here .

对于运行低于oreo版本的操作系统的设备,我尝试如下读取数据:

 public void getInstantAppData(final Activity activity, final InstantAppDataListener listener) {
    InstantApps.getInstantAppsClient(activity)
            .getInstantAppData()
            .addOnCompleteListener(new OnCompleteListener<ParcelFileDescriptor>() {
                @Override
                public void onComplete(@NonNull Task<ParcelFileDescriptor> task) {

                    try {
                        FileInputStream inputStream = new FileInputStream(task.getResult().getFileDescriptor());
                        BufferedInputStream bufferedInputStream = new BufferedInputStream(inputStream);
                        ZipInputStream zipInputStream = new ZipInputStream(bufferedInputStream);

                        ZipEntry zipEntry;

                        while ((zipEntry = zipInputStream.getNextEntry()) != null) {
                            Log.i("Instant-app", zipEntry.getName());
                            if (zipEntry.getName().equals("shared_prefs/")) {
                                extractSharedPrefsFromZip(activity, zipEntry);
                            }
                        }
                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                }
            });
}

private void extractSharedPrefsFromZip(Activity activity, ZipEntry zipEntry) throws IOException {
    File file = new File(activity.getApplicationContext().getFilesDir() + "/shared_prefs.vlp");
    mkdirs(file);
    FileInputStream fis = new FileInputStream(zipEntry.getName());

    BufferedInputStream bis = new BufferedInputStream(fis);
    ZipInputStream stream = new ZipInputStream(bis);
    byte[] buffer = new byte[2048];

    FileOutputStream fos = new FileOutputStream(file);
    BufferedOutputStream bos = new BufferedOutputStream(fos, buffer.length);

    int length;
    while ((length = stream.read(buffer)) > 0) {
        bos.write(buffer, 0, length);
    }
}

但是我出错了 Method threw 'java.io.FileNotFoundException' exception. 基本上,当我试图读取共享的_pref文件时,它找不到它。文件的全名是什么?有没有更好的方法可以将我共享的pref数据从即时应用程序传输到已安装的应用程序。