[英]UID for same user is different in Firebase database and authentication
I need to retrieve the data that i have stored in the Firebase database. 我需要检索存储在Firebase数据库中的数据。 But it shows that the UIDs are different in authentication part and database part. 但是它表明,UID在身份验证部分和数据库部分是不同的。
UPDATE : Now i am facing problems while trying to fetch data from the firebase. 更新 :现在我试图从firebase中获取数据时遇到问题。 I want to display it in a ListView. 我想在ListView中显示它。 When i go from the Login Activity(after successful login) to the General Activity (where i put the ListView), it does not show up and the Activity switches from General to the Login one. 当我从登录活动(成功登录后)转到常规活动(我将ListView放到那里)时,它没有显示,并且活动从常规切换为登录一个。 I am attaching the code segments at the bottom under "UPDATE CODE" . 我将代码段附加在“ UPDATE CODE”下的底部。 Help would be highly appreciated. 帮助将不胜感激。 Thanks! 谢谢!
Here is the code for registration 这是注册代码
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_registration);
setUpUIviews();
firebaseAuth = FirebaseAuth.getInstance();
db = FirebaseDatabase.getInstance().getReference().child("users");
Register.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (validate()){
String user_email = REmail.getText().toString().trim();
String user_password = RPass.getText().toString().trim();
firebaseAuth.createUserWithEmailAndPassword(user_email,user_password).addOnCompleteListener(new OnCompleteListener<AuthResult>() {
@Override
public void onComplete(@NonNull Task<AuthResult> task) {
if(task.isSuccessful()){
updateData();
Toast.makeText(Registration.this,"Registration Successful! ",Toast.LENGTH_SHORT).show();
startActivity(new Intent(Registration.this,MainActivity.class));
}else {
Toast.makeText(Registration.this,"Registration Unsuccessful ",Toast.LENGTH_SHORT).show();
}
}
});
}
}
});
And this is the update data part: 这是更新数据部分:
private void updateData(){
String uName = RName.getText().toString().trim();
String uEmail = REmail.getText().toString().trim();
String id = db.push().getKey();
ProfileUpdate profileUpdate = new ProfileUpdate(uName,uEmail);
db.child(id).setValue(profileUpdate);
Toast.makeText(this,"Added info",Toast.LENGTH_SHORT).show();
}
UPDATE CODE 更新码
Login Activity
public class LoginPage extends AppCompatActivity {
private TextView userRegistration;
private TextView Info;
private EditText LName;
private EditText LPass;
private Button LSignIn;
private int counter = 3;
private FirebaseAuth firebaseAuth;
private ProgressDialog progressDialog;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_loginpage);
userRegistration = (TextView)findViewById(R.id.tvRegister);
LName = (EditText)findViewById(R.id.btnName);
LPass = (EditText)findViewById(R.id.btnPass);
LSignIn = (Button) findViewById(R.id.btnSignIn);
Info = (TextView) findViewById(R.id.tvInfo);
Info.setText( " No of attempts remaining: 3 " );
firebaseAuth = FirebaseAuth.getInstance();
progressDialog = new ProgressDialog(this);
FirebaseUser user= null;
if(user!=null){
finish();
startActivity(new Intent(LoginPage.this,General.class));
}
user = firebaseAuth.getCurrentUser();
LSignIn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
validate(LName.getText().toString(),LPass.getText().toString());
}
});
userRegistration.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
startActivity(new Intent(LoginPage.this,Registration.class));
}
});
}
private void validate(String username, String password){
progressDialog.setMessage("Processing your request.... ");
progressDialog.show();
firebaseAuth.signInWithEmailAndPassword(username,password).addOnCompleteListener(new OnCompleteListener<AuthResult>() {
@Override
public void onComplete(@NonNull Task<AuthResult> task) {
if(task.isSuccessful()){
progressDialog.dismiss();
Toast.makeText(LoginPage.this,"Login successful!",Toast.LENGTH_SHORT).show();
startActivity(new Intent(LoginPage.this,General.class));
}else {
Info.setText("No of attempts remaining: " + String.valueOf(counter-1));
Toast.makeText(LoginPage.this,"Please enter corrent credentials",Toast.LENGTH_SHORT).show();
counter --;
progressDialog.dismiss();
if(counter<=0){
LSignIn.setEnabled(false);
}
}
}
});
}
}
General Activity
public class General extends AppCompatActivity {
private FirebaseAuth firebaseAuth;
private Button Logout;
ListView l1;
ArrayAdapter<String> adapter;
DatabaseReference databaseReference;
FirebaseUser user;
List<String> itemlist;
String uid;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_general);
firebaseAuth = FirebaseAuth.getInstance();
Logout = (Button) findViewById(R.id.btnLogout);
l1 = (ListView)findViewById(R.id.listView);
user = FirebaseAuth.getInstance().getCurrentUser();
uid = user.getUid();
itemlist = new ArrayList<>();
databaseReference = FirebaseDatabase.getInstance().getReference();
databaseReference.addValueEventListener(new ValueEventListener() {
@Override
public void onDataChange(@NonNull DataSnapshot dataSnapshot) {
itemlist.clear();;
String user_name = dataSnapshot.child(uid).child("usrName").getValue(String.class);
String user_email = dataSnapshot.child(uid).child("ursEmail").getValue(String.class);
itemlist.add(user_name);
itemlist.add(user_email);
adapter = new ArrayAdapter<>(General.this,android.R.layout.simple_list_item_1,itemlist);
l1.setAdapter(adapter);
}
@Override
public void onCancelled(@NonNull DatabaseError databaseError) {
}
});
Logout.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
firebaseAuth.signOut();
finish();
startActivity(new Intent(General.this, MainActivity.class));
}
});
}
}
activity_general.xml file
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/myApp"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".General">
<Button
android:id="@+id/btnLogout"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:layout_marginEnd="8dp"
android:layout_marginBottom="8dp"
android:text="LOGOUT"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.467"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/listView" />
<ListView
android:id="@+id/listView"
android:layout_width="368dp"
android:layout_height="270dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:layout_marginEnd="8dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</android.support.constraint.ConstraintLayout>
The Design 该设计
This is the code of how you store the user data into the datbase: 这是将用户数据存储到datbase中的代码:
String id = db.push().getKey();
ProfileUpdate profileUpdate = new ProfileUpdate(uName,uEmail);
db.child(id).setValue(profileUpdate);
In the first line you call push().getKey()
to get a new unique ID from the database SDK. 在第一行中,您调用push().getKey()
从数据库SDK获取新的唯一ID。 This ID is not related to the user profile. 该ID与用户个人资料无关。
If you want to store the users in the database under their UID, you will need to get the UID from the AuthResult
just after you created the user. 如果要在用户的UID下将用户存储在数据库中,则需要在创建用户后立即从AuthResult
获取UID。 Something like: 就像是:
String uid = task.getResult().getUser().getUid();
When you pass this uid
to your updateData
method, you then create the child node the database with: 当将此uid
传递给updateData
方法时,您将使用以下方法创建数据库的子节点:
db.child(uid).setValue(profileUpdate);
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