数据未发布在Firebase数据库中 [英] Data not posted on firebase database

问题描述

我试图将节点中的新数据保存在 President 节点下。

 President：{
$ userId：{
.write：auth！= null&& $ userId === auth.uid，
.read：auth.uid！= null
} $ 
 
 
 
 
 $ p 
 
 在我的应用程序中， pre>  FirebaseAuth mFirebaseAuth = FirebaseAuth.getInstance（）; 
 FirebaseUser mFirebaseUser = mFirebaseAuth.getCurrentUser（）; 
 FirebaseDatabase mDatabase = FirebaseDatabase.getInstance（）; 
 
 if（mFirebaseUser == null）{
 
} else {
 String mUserId = mFirebaseUser.getUid（）; 
 DatabaseReference vRef = mDatabase.getReference（MyFirebaseConstants.DATABASE_President）; 
 DatabaseReference newPresidentRef = vRef.child（mUserId）.push（）; 
字符串presidentKey = newPresidentRef.getKey（）; 
 
总统pres =新总统（）// POJO 
 //其他几个setter 
 
 pres.setId（visitorKey）; 
 newPresidentRef.setValue（pres）.addOnFailureListener（new OnFailureListener（）{
 @Override 
 public void onFailure（@NonNull异常e）{
 MyLogger.d（保存失败+ e.getMessage（））; 
} 
}）。addOnSuccessListener（new OnSuccessListener< Void>（）{
 @Override 
 public void onSuccess（Void aVoid） b $ b MyLogger.d（succedded）; 
} 
}）。isSuccessful（）; 
  

我的总裁pojo扩展了RealmObject并实现了Parcelable

但是，当我进入我的Firebase控制台时，我看不到任何数据。 onSuccess（）永远不会被调用， onFailure（）永远不会被调用。

问题是我的设备上限制了背景数据。因此数据不会发布到firebase。

我还没有找到更好的方法来检测Android设备上的背景数据限制

I am trying to save new data in firebase under a node President. i have already set some rules on that node.

"President":{
  "$userId":{
    ".write": "auth != null && $userId === auth.uid",
      ".read": " auth.uid != null"
  }
},

In my app

FirebaseAuth mFirebaseAuth = FirebaseAuth.getInstance();
FirebaseUser mFirebaseUser = mFirebaseAuth.getCurrentUser();
FirebaseDatabase mDatabase = FirebaseDatabase.getInstance();

if(mFirebaseUser == null){

}else{
  String mUserId = mFirebaseUser.getUid();
  DatabaseReference vRef = mDatabase.getReference(MyFirebaseConstants.DATABASE_President);
  DatabaseReference newPresidentRef = vRef.child(mUserId).push();
  String presidentKey = newPresidentRef.getKey();

 President pres = new President()//POJO
  // other few setters

  pres.setId(visitorKey);
  newPresidentRef.setValue(pres).addOnFailureListener(new OnFailureListener() {
    @Override
    public void onFailure(@NonNull Exception e) {
      MyLogger.d("failed to save "+e.getMessage());
    }
  }).addOnSuccessListener(new OnSuccessListener<Void>() {
    @Override
    public void onSuccess(Void aVoid) {
      MyLogger.d("succedded");
    }
  }).isSuccessful();

my President pojo extends RealmObject and implements Parcelable

However when i go to my firebase console, i can't see any data. onSuccess() is never called and onFailure() is never called.

解决方案

The issue was that I had restricted background data on my device. therefore data was not posted to firebase.

I haven't yet found a better way to detect background data restriction on android device

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