我目前剛接觸Firebase。如何從firebase中獲取父值java
我把鑰匙 - >>用戶>答案 - >關鍵 - >真 ,然後我用這個:
Firebase re = New Firebase(blabla..user->answer);
refLoadId_Question_Question.addListenerForSingleValueEvent(new ValueEventListener() {
@Override
public void onDataChange(DataSnapshot dataSnapshot) {
Map<String, Object> newPost = (Map<String, Object>) dataSnapshot.getValue();
System.out.println("Id_question1: " + dataSnapshot.getValue());
System.out.println("Id_question1: " + dataSnapshot.getChildren().toString());
list_id_question.add(dataSnapshot.getKey());
}
@Override
public void onCancelled(FirebaseError firebaseError) {
}
});
我收到:Id_question1:{-Ja3RTtq5DMGIdVF9-PC = true} in dataSnapsho.getValue();
我的問題是可能從Java中的對象類型獲取鍵值?我想得到這個值:-Ja3RTtq5DMGIdVF9-pC
any please please help? 謝謝..
謝謝你快回答我要去嘗試,但現在我要去發現錯誤首先從我的應用程序我會盡快告訴你的。 – 2014-11-07 09:58:05