无法在Firestore中存储数据

Question

我是Google Cloud Firestore服务的新用户，但在保存一些数据时，它失败了：document=sampleData,collection=info

private DocumentReference mdocRef;


@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_profile);
    mdocRef=FirebaseFirestore.getInstance().collection("sampleData").document("info"); ....}

保存方法：

private void saveInfo(){
    String Name=nameText.getText().toString().trim();
    String Phone=phoneText.getText().toString().trim();
    String Dob=dobText.getText().toString().trim();

    if(Name.isEmpty() || Phone.isEmpty() || Dob.isEmpty()){
        Toast.makeText(this,"Please enter the information ",Toast.LENGTH_SHORT).show();return;
    }
    Map<String,Object> data=new HashMap<String, Object>();
    data.put("name",Name);
    data.put("phone",Phone);
    data.put("dob",Dob);
    Log.i("phone",Phone);

    mdocRef.set(data).addOnCompleteListener(this, new OnCompleteListener<Void>() {
        @Override
        public void onComplete(@NonNull Task<Void> task) {
            if(task.isSuccessful()){
                Toast.makeText(getApplicationContext(),"Information has been saved! ",Toast.LENGTH_SHORT).show();return;

            }
            else{
                Toast.makeText(getApplicationContext(),"Information couldn't be saved!,Try again! ",Toast.LENGTH_SHORT).show();return;

            }
        }
    });

}

关于firestore的规则信息：

 service cloud.firestore {
  match /databases/{database}/documents {
  match /sampleData/{anything=**}{
  allow read,write: if true;
  }
    match /{document=**} {
      allow read, write;
    }
  }
}

当用户输入数据和应用程序调用saveInfo（）然后task：

public void onComplete(@NonNull Task<Void> task) {
        if(task.isSuccessful()){
            Toast.makeText(getApplicationContext(),"Information has been saved! ",Toast.LENGTH_SHORT).show();return;

        }
        else{
            Toast.makeText(getApplicationContext(),"Information couldn't be saved!,Try again! ",Toast.LENGTH_SHORT).show();return;

        }

永远不会成功。

Answer 1

以下是读/写firebase值的基本步骤：

private DatabaseReference mDatabase;
mDatabase = FirebaseDatabase.getInstance().getReference();
//for offline data save
FirebaseDatabase.getInstance().setPersistenceEnabled(true);

插入数据：实时数据库接受多种数据类型String，Long，Double，Boolean，Map，List来存储数据。您还可以使用自定义Java对象来存储数据，这在将模型类直接存储在数据库中时非常有用。

由于每个用户都需要一个唯一的Id，您可以通过调用push（）方法生成一个Id，该方法创建一个具有唯一键的空节点。然后使用child（）方法获取对“users”节点的引用。最后使用setValue（）方法存储用户数据。

DatabaseReference mDatabase = FirebaseDatabase.getInstance().getReference("users");

// Creating new user node, which returns the unique key value
// new user node would be /users/$userid/
String userId = mDatabase.push().getKey();

// creating user object
User user = new User("username", "[email protected]");

// pushing user to 'users' node using the userId
mDatabase.child(userId).setValue(user);

这是用户模型：

@IgnoreExtraProperties
public class User {

    public String name;
    public String email;

    // Default constructor required for calls to
    // DataSnapshot.getValue(User.class)
    public User() {
    }

    public User(String name, String email) {
        this.name = name;
        this.email = email;
    }
}

我在Firebase中太新了，我试过这个来保存用户的基本数据。希望它会对你有所帮助。