firebase connecten

1package com.example.phonechat;
2
3import androidx.annotation.NonNull;
4import androidx.appcompat.app.AppCompatActivity;
5
6import android.content.Intent;
7import android.os.Bundle;
8import android.view.View;
9import android.widget.Button;
10import android.widget.EditText;
11import android.widget.Toast;
12
13import com.google.android.gms.tasks.OnCompleteListener;
14import com.google.android.gms.tasks.Task;
15import com.google.firebase.auth.AuthResult;
16import com.google.firebase.auth.FirebaseAuth;
17import com.google.firebase.auth.FirebaseUser;
18
19import java.util.HashMap;
20import java.util.Map;
21import java.util.concurrent.Executor;
22
23public class RegistrationActivity extends AppCompatActivity {
24
25
26    private Button mRegistration;
27    private EditText mEmail, mPassowrd, mName;
28
29    private FirebaseAuth mAuth;
30    private FirebaseAuth.AuthStateListener firebaseAuthStateListener;
31
32    @Override
33    protected void onCreate(Bundle savedInstanceState) {
34        super.onCreate(savedInstanceState);
35        setContentView(R.layout.activity_login);
36
37        firebaseAuthStateListener = new FirebaseAuth.AuthStateListener() {
38            @Override
39            public void onAuthStateChanged(@NonNull FirebaseAuth firebaseAuth) {
40                FirebaseUser user = FirebaseAuth.getInstance().getCurrentUser();
41                if (user!=null) {
42                    Intent intent = new Intent(getApplication(), MainActivity.class);
43                    intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
44                    startActivity(intent);
45                    finish();
46                    return;
47                }
48
49            }
50        };
51        mAuth = FirebaseAuth.getInstance();
52
53        mRegistration = findViewById(R.id.registration);
54        mEmail = findViewById(R.id.gmail);
55        mName = findViewById(R.id.name);
56        mPassowrd = findViewById(R.id.password);
57
58
59        mRegistration.setOnClickListener(new View.OnClickListener() {
60            @Override
61            public void onClick(View v) {
62                final String name = mName.getText().toString();
63                final String email = mEmail.getText().toString();
64                final String password = mPassowrd.getText().toString();
65                mAuth.createUserWithEmailAndPassword(email, password).addOnCompleteListener(activity: getApplication(), new OnCompleteListener<AuthResult>() {
66                    @Override
67                    public void onComplete(@NonNull Task<AuthResult> task) {
68                        if (!task.isSuccessful()) {
69                            Toast.makeText(getApplicationContext(), "Sign in ERROR", Toast.LENGTH_SHORT).show();
70
71                        }else{
72                            String userId = mAuth.getCurrentUser().getUid();
73                            DatabaseRefere currentUSerDb = FirebaseDatabase.getInstace().getRefernce().child("users").child(userId);
74
75                            Map userinfo = new HashMap<>();
76                            userInfo.put( k: "email", email);
77                            userInfo.put( k: "name", name);
78                            userInfo.put( k: "profileImageErl", v: "default");
79
80                            currentUSerDb.updateChilderen(userInfo);
81
82                        }
83                    }
84                });
85            }
86        });
87
88    }
89    @Override
90    protected void  onStart() {
91        super.onStart();
92        mAuth.addAuthStateListener(firebaseAuthStateListener);
93
94
95    }
96    @Override
97    protected void onStop() {
98        super.onStop();
99        mAuth.removeAuthStateListener(firebaseAuthStateListener);
100
101    }
102}
103