Google Firebase和Unity（C#）：无法从bucket下载png 规格 问题

我在设置从存储器下载图片的系统时遇到问题。我不是数据库方面的专家，但我想尝试一下，只是想了解它是如何完成的。 我发现Firebase在实时数据库中存储元数据非常有用，即使对于像我这样的入门级程序员来说也很容易实现

问题是，我正试图从存储中的文件夹下载

.png

文件，但我无法找到该文件是否已实际下载或在下载过程中丢失。我在控制台中没有收到任何错误，但是当我打开文件应该在其中的文件夹时，它是空的

代码

---

这不适用于您的原因可能有很多，包括：

• 安全规则设置不正确
• 文件路径不正确
• 您在错误的平台上测试它（Firebase在编辑器中无法正常工作）
• 您的设备正在阻止连接
• 等等

要获取错误消息，您需要记录它们：

private SimpleFirebaseUnity.Firebase firebaseDatabase;
private FirebaseQueue firebaseQueue;
private FirebaseStorage firebaseStorage;
private StorageReference m_storage_ref;

// Setup refernece to database and storage
void SetupReferences()
{
    // Get a reference to the database service, using SimpleFirebase plugin
    firebaseDatabase = SimpleFirebaseUnity.Firebase.CreateNew(FIREBASE_LINK, FIREBASE_SECRET);

    // Get a reference to the storage service, using the default Firebase App
    firebaseStorage = FirebaseStorage.DefaultInstance;

    // Create a storage reference from our storage service
    m_storage_ref = firebaseStorage.GetReferenceFromUrl(STORAGE_LINK);

    // Create a queue, using SimpleFirebase
    firebaseQueue = new FirebaseQueue(true, 3, 1f);
}

// ...

IEnumerator DownloadImage(string address, string fileName)
{
    var local_path = Application.persistentDataPath + THUMBNAILS_PATH;
    var content_ref = m_storage_ref.Child(THUMBNAILS_PATH + fileName + ".png");

    content_ref.GetFileAsync(local_path).ContinueWith(task => {
        if (!task.IsFaulted && !task.IsCanceled)
        {
            Debug.Log("File downloaded.");
        }
    });

    yield return null;
}

请记住，在编辑器中测试它可能不起作用

private SimpleFirebaseUnity.Firebase firebaseDatabase;
private FirebaseQueue firebaseQueue;
private FirebaseStorage firebaseStorage;
private StorageReference m_storage_ref;

// Setup refernece to database and storage
void SetupReferences()
{
    // Get a reference to the database service, using SimpleFirebase plugin
    firebaseDatabase = SimpleFirebaseUnity.Firebase.CreateNew(FIREBASE_LINK, FIREBASE_SECRET);

    // Get a reference to the storage service, using the default Firebase App
    firebaseStorage = FirebaseStorage.DefaultInstance;

    // Create a storage reference from our storage service
    m_storage_ref = firebaseStorage.GetReferenceFromUrl(STORAGE_LINK);

    // Create a queue, using SimpleFirebase
    firebaseQueue = new FirebaseQueue(true, 3, 1f);
}

// ...

IEnumerator DownloadImage(string address, string fileName)
{
    var local_path = Application.persistentDataPath + THUMBNAILS_PATH;
    var content_ref = m_storage_ref.Child(THUMBNAILS_PATH + fileName + ".png");

    content_ref.GetFileAsync(local_path).ContinueWith(task => {
        if (!task.IsFaulted && !task.IsCanceled)
        {
            Debug.Log("File downloaded.");
        }
    });

    yield return null;
}

IEnumerator DownloadImage(string address, string fileName)
{
    var local_path = Application.persistentDataPath + THUMBNAILS_PATH;
    var content_ref = m_storage_ref.Child(THUMBNAILS_PATH + fileName + ".png");

    content_ref.GetFileAsync(local_path).ContinueWith(task => {
        if (!task.IsFaulted && !task.IsCanceled)
        {
            Debug.Log("File downloaded.");
        }
        else
        {
            Debug.Log(task.Exception.ToString());
        }
    });

    yield return null;
}