每当单击“注册”按钮时，我一直试图将用户添加到Firebase平台，以创建用户，该用户将使用系统中的电子邮件和密码登录对后记进行身份验证，尽管从未成功。我必须在代码中添加什么？任何帮助将不胜感激。
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login);
// Set up the login form.
mEmailView = findViewById( R.id.email );
populateAutoComplete();
mPasswordView = findViewById( R.id.password );
mPasswordView.setOnEditorActionListener( new TextView.OnEditorActionListener() {
@Override
public boolean onEditorAction(TextView textView, int id, KeyEvent keyEvent) {
if (id == EditorInfo.IME_ACTION_DONE || id == EditorInfo.IME_NULL) {
attemptLogin();
return true;
}
return false;
}
} );
mLoginFormView = findViewById( R.id.login_form );
mProgressView = findViewById( R.id.login_progress );
mAuth = FirebaseAuth.getInstance();
firebaseAuth = FirebaseAuth.getInstance();
mAuthStateListener = new FirebaseAuth.AuthStateListener() {
@Override
public void onAuthStateChanged(@NonNull FirebaseAuth firebaseAuth) {
FirebaseUser user = firebaseAuth.getCurrentUser();
if (user != null ) {
Log.d(TAG, "onAuthStateChanged:signed_in:" + user.getUid());
} else {
Log.d( TAG, "onAuthStateChanged:signed_out:");
}
}
};
}
@Override
public void onStart() {
super.onStart();
firebaseAuth.addAuthStateListener( mAuthStateListener );
FirebaseUser currentUser = mAuth.getCurrentUser();
updateUI(currentUser);
}
@Override
public void onStop() {
super.onStop();
if (mAuthStateListener != null) {
mAuth.removeAuthStateListener( mAuthStateListener );
}
}
private void updateUI(FirebaseUser currentUser) {
}
private void populateAutoComplete() {
if (!mayRequestContacts()) {
return;
}
getLoaderManager().initLoader( 0, null, this );
}
private boolean mayRequestContacts() {
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) {
return true;
}
if (checkSelfPermission( READ_CONTACTS ) == PackageManager.PERMISSION_GRANTED) {
return true;
}
if (shouldShowRequestPermissionRationale( READ_CONTACTS )) {
Snackbar.make( mEmailView, R.string.permission_rationale, Snackbar.LENGTH_INDEFINITE )
.setAction( android.R.string.ok, new View.OnClickListener() {
@Override
@TargetApi(Build.VERSION_CODES.M)
public void onClick(View v) {
requestPermissions( new String[]{READ_CONTACTS}, REQUEST_READ_CONTACTS );
}
} );
} else {
requestPermissions( new String[]{READ_CONTACTS}, REQUEST_READ_CONTACTS );
}
return false;
}
/**
* Callback received when a permissions request has been completed.
*/
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions,
@NonNull int[] grantResults) {
if (requestCode == REQUEST_READ_CONTACTS) {
if (grantResults.length == 1 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
populateAutoComplete();
}
}
}
/**
* Attempts to sign in or register the account specified by the login form.
* If there are form errors (invalid email, missing fields, etc.), the
* errors are presented and no actual login attempt is made.
*/
private void attemptLogin() {
if (mAuthTask != null) {
return;
}
// Reset errors.
mEmailView.setError( null );
mPasswordView.setError( null );
// Store values at the time of the login attempt.
String email = mEmailView.getText().toString();
String password = mPasswordView.getText().toString();
boolean cancel = false;
View focusView = null;
// Check for a valid password, if the user entered one.
if (!TextUtils.isEmpty( password ) && !isPasswordValid( password )) {
mPasswordView.setError( getString( R.string.error_invalid_password ) );
focusView = mPasswordView;
cancel = true;
}
// Check for a valid email address.
if (TextUtils.isEmpty( email )) {
mEmailView.setError( getString( R.string.error_field_required ) );
focusView = mEmailView;
cancel = true;
} else if (!isEmailValid( email )) {
mEmailView.setError( getString( R.string.error_invalid_email ) );
focusView = mEmailView;
cancel = true;
}
if (cancel) {
// There was an error; don't attempt login and focus the first
// form field with an error.
focusView.requestFocus();
} else {
// Show a progress spinner, and kick off a background task to
// perform the user login attempt.
showProgress( true );
mAuthTask = new UserLoginTask( email, password );
mAuthTask.execute( (Void) null );
}
}
private boolean isEmailValid(String email) {
//TODO: Replace this with your own logic
return email.contains( "@" );
}
private boolean isPasswordValid(String password) {
//TODO: Replace this with your own logic
return password.length() > 4;
}
/**
* Shows the progress UI and hides the login form.
*/
@SuppressLint("ObsoleteSdkInt")
@TargetApi(Build.VERSION_CODES.HONEYCOMB_MR2)
private void showProgress(final boolean show) {
// On Honeycomb MR2 we have the ViewPropertyAnimator APIs, which allow
// for very easy animations. If available, use these APIs to fade-in
// the progress spinner.
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB_MR2) {
int shortAnimTime = getResources().getInteger( android.R.integer.config_shortAnimTime );
mLoginFormView.setVisibility( show ? View.GONE : View.VISIBLE );
mLoginFormView.animate().setDuration( shortAnimTime ).alpha(
show ? 0 : 1 ).setListener( new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
mLoginFormView.setVisibility( show ? View.GONE : View.VISIBLE );
}
} );
mProgressView.setVisibility( show ? View.VISIBLE : View.GONE );
mProgressView.animate().setDuration( shortAnimTime ).alpha(
show ? 1 : 0 ).setListener( new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
mProgressView.setVisibility( show ? View.VISIBLE : View.GONE );
}
} );
} else {
// The ViewPropertyAnimator APIs are not available, so simply show
// and hide the relevant UI components.
mProgressView.setVisibility( show ? View.VISIBLE : View.GONE );
mLoginFormView.setVisibility( show ? View.GONE : View.VISIBLE );
}
}
@Override
public Loader<Cursor> onCreateLoader(int i, Bundle bundle) {
return new CursorLoader( this,
// Retrieve data rows for the device user's 'profile' contact.
Uri.withAppendedPath( ContactsContract.Profile.CONTENT_URI,
ContactsContract.Contacts.Data.CONTENT_DIRECTORY ), ProfileQuery.PROJECTION,
// Select only email addresses.
ContactsContract.Contacts.Data.MIMETYPE +
" = ?", new String[]{ContactsContract.CommonDataKinds.Email
.CONTENT_ITEM_TYPE},
// Show primary email addresses first. Note that there won't be
// a primary email address if the user hasn't specified one.
ContactsContract.Contacts.Data.IS_PRIMARY + " DESC" );
}
@Override
public void onLoadFinished(Loader<Cursor> cursorLoader, Cursor cursor) {
List<String> emails = new ArrayList<>();
cursor.moveToFirst();
while (!cursor.isAfterLast()) {
emails.add( cursor.getString( ProfileQuery.ADDRESS ) );
cursor.moveToNext();
}
addEmailsToAutoComplete( emails );
}
@Override
public void onLoaderReset(Loader<Cursor> cursorLoader) {
}
private void addEmailsToAutoComplete(List<String> emailAddressCollection) {
//Create adapter to tell the AutoCompleteTextView what to show in its dropdown list.
ArrayAdapter<String> adapter =
new ArrayAdapter<>( LoginActivity.this,
android.R.layout.simple_dropdown_item_1line, emailAddressCollection );
mEmailView.setAdapter( adapter );
}
public void Register(View view) {
Intent intent = new Intent(LoginActivity.this, BottomActivity.class);
startActivity(intent);
attemptLogin();
mAuth.createUserWithEmailAndPassword(email.getText().toString(), password.getText().toString())
.addOnCompleteListener( this, new OnCompleteListener<AuthResult>() {
@Override
public void onComplete(@NonNull Task<AuthResult> task) {
if (task.isSuccessful()) {
Log.d( TAG, "createUserWithEmail:success" );
FirebaseUser user = mAuth.getCurrentUser();
updateUI( user );
} else {
Log.w(TAG, "createUserWithEmail:failed");
Toast.makeText(LoginActivity.this, "Authentication failed", Toast.LENGTH_SHORT).show();
updateUI( null );
}
}
} );
}
public void Login(View view) {
Intent intent = new Intent(LoginActivity.this, LoginActivity2.class);
startActivity(intent);
}
private interface ProfileQuery {
String[] PROJECTION = {
ContactsContract.CommonDataKinds.Email.ADDRESS,
ContactsContract.CommonDataKinds.Email.IS_PRIMARY,
};
int ADDRESS = 0;
}
/**
* Represents an asynchronous login/registration task used to authenticate
* the user.
*/
@SuppressLint("StaticFieldLeak")
public class UserLoginTask extends AsyncTask<Void, Void, Boolean> {
private final String mEmail;
private final String mPassword;
UserLoginTask(String email, String password) {
mEmail = email;
mPassword = password;
}
@Override
protected Boolean doInBackground(Void... params) {
// TODO: attempt authentication against a network service.
try {
// Simulate network access.
Thread.sleep( 2000 );
} catch (InterruptedException e) {
return false;
}
for (String credential : DUMMY_CREDENTIALS) {
String[] pieces = credential.split( ":" );
if (pieces[0].equals( mEmail )) {
// Account exists, return true if the password matches.
return pieces[1].equals( mPassword );
}
}
// TODO: register the new account here.
return true;
}
@Override
protected void onPostExecute(final Boolean success) {
mAuthTask = null;
showProgress( false );
if (success) {
finish();
} else {
mPasswordView.setError( getString( R.string.error_incorrect_password ) );
mPasswordView.requestFocus();
}
}
@Override
protected void onCancelled() {
mAuthTask = null;
showProgress( false );
}
}
}