![task.getresult().getdata() is null firestore task.getresult().getdata() is null firestore](https://hackster.imgix.net/uploads/attachments/918645/schermata_da_2019-06-06_18-25-51_Icf2kK2asp.png)
我没有实施Google Auth,而是希望将文档名称 Document_sdfljkhsdio作为请求数据发送,并将其与Firebase控制台中的某些规则相匹配 service cloud. Cloud Firestore stores data in documents, which are stored in collections. The method cargarDatos() is in the same activity that the method organizarDatos(). Usa una funcion de callback donde recibas el rol como parametro y se ejecute cuando firebase responda. I think is because I change the value of Cervezas inside the onCompleteListener. El pedido a firebase trabaja de forma asincronica, por lo que cuando retornas el dato aun no se ha recibido la respuesta de firebase, lo que debes hacer es quitar el return ya que siempre te dara null. I created a Recyclerview that shows the results, but when I populate it, the information never arrives. The problem is that in this way, I get all the field of the document(you can see in the picture below) and even the partecipantsArray is bad formatting, because the name are all in a row, how you can see in the spinner screenshot.
TASK.GETRESULT().GETDATA() IS NULL FIRESTORE ANDROID
在我的例子中,Firestore数据库如下所示,其中每个Android客户端都有一个文档映射到他/她的设备 Document_sdfljkhsdio ( specific to Android User 1 ) FireStoreCollectionĭocument_sdfljkhsdio ( specific to Android User 1 )ĭocument_kjjkssefd ( specific to Android User 2 )ĭocument_sqdfwdfsme ( specific to Android User 3 ) I'm programming an app that needs to fetch data in the Firestore data base. – using set() to create or overwrite a single document: collection("tutorials").document("androidTutRef") Īssume that our database structure is like: Hierarchical Data with Subcollection-Document in a Document Firebase Firestore Database adalah database dari firebase yang menggunakan konsep NoSQL, pada project android yang melibatkan media penyimpanan database maka salah satu yang biasa kita gunakan pada android yaitu Sqlite Database, namun kekurangan pada Sqlite database yaitu yang bersifat lokal yaitu hanya ada di ponsel user. Reference to a Document in a CollectionĭocumentReference jsaDocumentRef = db.collection("notes").document("jsa") ĭocumentReference jsaDocumentRef = db.document("notes/jsa") Access a Cloud Firestore instance from your ActivityįirebaseFirestore db = FirebaseFirestore.getInstance() ĬollectionReference notesCollectionRef = db.collection("notes") To simplify this example without Authentication steps, we will allow anyone be able to read or write to the database: – We also need Authentication to work with Firestore.
![task.getresult().getdata() is null firestore task.getresult().getdata() is null firestore](https://i.stack.imgur.com/F0AA6.png)
![task.getresult().getdata() is null firestore task.getresult().getdata() is null firestore](https://i.stack.imgur.com/VqvqD.png)
AlertDialog.Builder alertDialog new AlertDialog.Builder(MainActivity.this, R.style. Implementation ':firebase-firestore:11.8.0'Īpply plugin: '-services' java - android studio firebase firestore.