在我的应用程序中有一个注册选项，用户可以输入他的数据，用户输入后他们可以获得一个 token ，然后他们可以使用该 token 登录，每个用户都会获得一个唯一的 token 并使用这个唯一的 token 登录token.我如何使用 firebase 做到这一点？
这是 Firebase 数据库: https://i.pinimg.com/originals/40/47/18/404718948df116f257abe31fa8cc98e7.png
这里是示例代码: 公共(public)类 MainActivity 扩展 AppCompatActivity {
//for sign in
EditText edtUser,edtPwd;
//for sign up
EditText edtNewUser,edtnewPassword,edtnewPhnNum,edtnewEmail;
Button signIn,signUp;
FirebaseDatabase database;
DatabaseReference users;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
edtUser = findViewById(R.id.signinUserEdit);
edtPwd = findViewById(R.id.signinUserPwd);
signIn = findViewById(R.id.signinBtn);
signUp = findViewById(R.id.signUpBtn);
database = FirebaseDatabase.getInstance();
users = database.getReference("Users");
signUp.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
signUpDilog();
}
});
signIn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
signInMethod(edtUser.getText().toString(),edtPwd.getText().toString());
}
});
}
private void signInMethod(final String user, final String pwd) {
users.addListenerForSingleValueEvent(new ValueEventListener() {
@Override
public void onDataChange(@NonNull DataSnapshot dataSnapshot) {
if (dataSnapshot.child(user).exists()){
if (!user.isEmpty()){
SignInUpModel login = dataSnapshot.child(user).getValue(SignInUpModel.class);
if (login.getPassword().equals(pwd)){
Toast.makeText(MainActivity.this,"Login ok!",Toast.LENGTH_LONG).show();
Intent home = new Intent(MainActivity.this,HomeActivity.class);
CommonModel.currentUser = login;
startActivity(home);
finish();
}
else
Toast.makeText(MainActivity.this,"Wrong Password",Toast.LENGTH_LONG).show();
}else{
Toast.makeText(MainActivity.this,"Please enter your user name",Toast.LENGTH_LONG).show();
}
}
else
Toast.makeText(MainActivity.this,"User is not exists",Toast.LENGTH_LONG).show();
}
@Override
public void onCancelled(@NonNull DatabaseError databaseError) {
}
});
}
private void signUpDilog() {
AlertDialog.Builder alertDialog = new AlertDialog.Builder(MainActivity.this);
alertDialog.setTitle("Sign Up");
alertDialog.setMessage("Please fill your information");
LayoutInflater inflater = this.getLayoutInflater();
View signUpLayout = inflater.inflate(R.layout.signuplayout,null);
edtNewUser = signUpLayout.findViewById(R.id.signUpEdit);
edtnewEmail = signUpLayout.findViewById(R.id.signoutemailEdit);
edtnewPhnNum = signUpLayout.findViewById(R.id.signupphnEdit);
edtnewPassword = signUpLayout.findViewById(R.id.signUpPwd);
alertDialog.setView(signUpLayout);
alertDialog.setIcon(R.drawable.ic_account_circle_black_24dp);
alertDialog.setNegativeButton("No", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
dialogInterface.dismiss();
}
});
alertDialog.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
final SignInUpModel user = new SignInUpModel(edtNewUser.getText().toString(),edtnewEmail.getText().toString(),
edtnewPhnNum.getText().toString(),edtnewPassword.getText().toString());
users.addListenerForSingleValueEvent(new ValueEventListener() {
@Override
public void onDataChange(@NonNull DataSnapshot dataSnapshot) {
if (dataSnapshot.child(user.getUserName()).exists()){
Toast.makeText(MainActivity.this,"User already exists",Toast.LENGTH_LONG).show();
}else{
users.child(user.getUserName()).setValue(user);
Toast.makeText(MainActivity.this,"User registration success!",Toast.LENGTH_LONG).show();
}
}
@Override
public void onCancelled(@NonNull DatabaseError databaseError) {
}
});
dialogInterface.dismiss();
}
});
alertDialog.show();
}
}
我希望当用户输入他/她的详细信息并完成注册时，他/她会获得一个 token 并输入该 token 并完成他的签名并进入下一个 Activity 。我怎样才能使用 firebase 做到这一点？谢谢你
最佳答案
试试这个注册
TextView mailSignup = findViewById(R.id.mailSignup);
String Email = mailSignup.getText().toString();
TextView passwordSignup = findViewById(R.id.passwordSignup);
String Password = passwordSignup.getText().toString();
TextView nameSignup = findViewById(R.id.nameSignup);
String Name = nameSignup.getText().toString();
TextView ErrorText = findViewById(R.id.errortext);
TextView confirmPassSignup = findViewById(R.id.confirmpassSignup);
String Verification = confirmPassSignup.getText().toString();
if (!(Password.isEmpty()) && !(Email.isEmpty()) && !(Name.isEmpty()) && Password.equals(Verification) && Password.length() > 5) {
mAuth = FirebaseAuth.getInstance();
mAuth.createUserWithEmailAndPassword(Email, Password).addOnCompleteListener(SignUp.this, new OnCompleteListener<AuthResult>() {
@Override
public void onComplete(@NonNull Task<AuthResult> task) {
if (task.isSuccessful()) {
// Sign in success, update UI with the signed-in user's information
mDatabase = FirebaseDatabase.getInstance().getReference("users");
String UserUid = mAuth.getCurrentUser().getUid();
user User = new user(UserUid,Name,Email);
mDatabase.child(UserUid).setValue(User);
// Toast.makeText(SignUp.this, "Save Done", Toast.LENGTH_SHORT).show();
} else {
Handler handler = new Handler();
handler.postDelayed(new Runnable() {
public void run() {
progressDialog.dismiss();
}
}, 1000);
// If sign in fails, display a message to the user.
Toast.makeText(SignUp.this, "Authentication failed.", Toast.LENGTH_SHORT).show();
}
}
});
}
这是登录
EditText mailLogin = findViewById(R.id.mailLogin);
String Email = mailLogin.getText().toString();
EditText passwordLogin = findViewById(R.id.passwordLogin);
String Password = passwordLogin.getText().toString();
if (!(Email.isEmpty()) && !(Password.isEmpty())){
mAuth.signInWithEmailAndPassword(Email,Password)
.addOnCompleteListener(MainActivity.this, new OnCompleteListener<AuthResult>() {
@Override
public void onComplete(@NonNull Task<AuthResult> task) {
if (task.isSuccessful()){
Intent goToHome = new Intent(LoginActivity.this, Home.class);
startActivity(goToHome);
}
else{
Toast.makeText(getApplicationContext(),"Wrong Credentials",Toast.LENGTH_LONG).show();
Handler handler = new Handler();
handler.postDelayed(new Runnable() {
public void run() {
}
}, 1000);
}
}
});
}
}
关于java - 如何使用 firebase 登录 token ？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/56876381/