UNITY Application.OpenUrl()在Android7 Nougat上不起作用

#if UNITY_ANDROID && !UNITY_EDITOR
using UnityEngine;
using System.Collections;
using UnityEngine.Android;

public class OpenURL : MonoBehaviour
{
    public void Open(string url)
    {
        if (!Permission.HasUserAuthorizedPermission(Permission.ExternalStorageRead))
        {
            Permission.RequestUserPermission(Permission.ExternalStorageRead);
        }

        if (!Permission.HasUserAuthorizedPermission(Permission.ExternalStorageWrite))
        {
            Permission.RequestUserPermission(Permission.ExternalStorageWrite);
        }

        AndroidJavaClass intentClass = new AndroidJavaClass("android.content.Intent");
        AndroidJavaObject intentObject = new AndroidJavaObject("android.content.Intent", intentClass.GetStatic<string>("ACTION_VIEW"));
        AndroidJavaClass uriClass = new AndroidJavaClass("android.net.Uri");
        AndroidJavaObject uriObject = uriClass.CallStatic<AndroidJavaObject>("parse", url);
        intentObject.Call<AndroidJavaObject>("setData", uriObject);
        AndroidJavaClass unity = new AndroidJavaClass("com.unity3d.player.UnityPlayer");
        AndroidJavaObject currentActivity = unity.GetStatic<AndroidJavaObject>("currentActivity");
        currentActivity.Call("startActivity", intentObject);
    }
}
#endif