数据未从Android保存到Firebase数据库中

问题描述

我正在使用新的Firebase控制台.我正在尝试将对象保存到数据库，但是没有保存.以下是代码.

I am using the new Firebase console. I am trying to save an object to the database but its not getting saved. Following is the code.

DatabaseReference mFirebaseRef = FirebaseDatabase.getInstance().getReference();
mFirebaseRef.push().setValue(object, new DatabaseReference.CompletionListener() {
            @Override
            public void onComplete(DatabaseError databaseError, DatabaseReference reference) {
                if (databaseError != null) {
                    Log.e(TAG, "Failed to write message", databaseError.toException());
                }
            }
        });

正确创建了对象".我没有收到任何错误，并且已经在调试中检查了onComplete方法没有被触发.安全规则也适用于写入.

the 'object' is created properly. There is no error I am getting and I have checked in debugging that the onComplete method is not getting triggered.Security Rule is also true for write.

推荐答案

请注意， DatabaseReference.CompletionListener 在数据库服务器已确认操作时触发".运行测试时是否可能没有网络连接?我复制了您的代码，并在定义为object的手机上成功运行了该代码:

Note that DatabaseReference.CompletionListener fires "when an operation has been acknowledged by the Database servers". Is it possible you did not have a network connection at the time you ran your test? I copied your code and ran it successfully on a phone with object defined like this:

Object object = new String("Test");

然后，我启用了飞行模式，重新运行了代码，并观察了您描述的行为.在我禁用飞行模式并建立网络连接之前，完成监听器不会启动.

I then enabled airplane mode, re-ran the code and observed the behavior you describe. The completion listener did not fire until I disabled airplane mode and a network connection was established.

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