@Override
public void onError(FirebaseError firebaseError) {
mResultListener.onFinish();
int errCode = firebaseError.getCode();
if (errCode == FirebaseError.USER_DOES_NOT_EXIST) {
mResultListener.onSuccess();
} else {
mResultListener.onError(firebaseError.toException(), firebaseError.getMessage());
}
}
/**
* ***********************************************************************************************
* Method: captureFirebaseError Description: upon receiving a firebase error, interpret this error
* and output to the system the type of error. Parameters: N/A Returned: N/A
* **********************************************************************************************
*/
public String captureFirebaseError(FirebaseError error) {
String errorMessage = "Firebase Error.";
if (null != error) {
switch (error.getCode()) {
case FirebaseError.EMAIL_TAKEN:
errorMessage = "Error: Email taken.";
break;
case FirebaseError.EXPIRED_TOKEN:
errorMessage = "Error: Expired token.";
break;
case FirebaseError.INVALID_EMAIL:
errorMessage = "Error: Invalid email.";
break;
case FirebaseError.INVALID_PASSWORD:
errorMessage = "Error: Invalid password.";
break;
case FirebaseError.INVALID_TOKEN:
errorMessage = "Error: Invalid token.";
break;
case FirebaseError.INVALID_CREDENTIALS:
errorMessage = "Error: Invalid credentials.";
break;
case FirebaseError.PERMISSION_DENIED:
errorMessage = "Error: Permission denied.";
break;
case FirebaseError.OPERATION_FAILED:
errorMessage = "Error: Operation failed.";
break;
default:
errorMessage = "Firebase error";
// System.out.println("Firebase error");
System.out.println("Firebase error");
break;
}
System.out.println(errorMessage);
}
return errorMessage;
}
private void onError(FirebaseError error) {
// On error, stop refreshing and dislay error
Log.e("firebase_error", "Could not retreive firebase posts: " + error.getMessage());
refreshLayout.setRefreshing(false);
Toast.makeText(getApplicationContext(), "Could not retrieve posts", Toast.LENGTH_SHORT).show();
}
public UpdateEmailEvent(FirebaseError firebaseError) {
mHasError = true;
mCode = firebaseError.getCode();
mDetails = firebaseError.getDetails();
mMessage = firebaseError.getMessage();
}
@Override
public void onCancelled(FirebaseError firebaseError) {
mValueListener.onFinish();
mValueListener.onError(firebaseError.toException(), firebaseError.getMessage());
}
@Override
public void onAuthenticationError(FirebaseError firebaseError) {
showDialog(firebaseError.toString(), true);
}
/** An activity that creates a login screen offering login via email/password. */
public class LoginActivity extends AppCompatActivity implements LoaderCallbacks<Cursor> {
/** Id to identity READ_CONTACTS permission request. */
private static final int REQUEST_READ_CONTACTS = 0;
public static final String CHECKLIST = "ActiveTransport.CHECKLIST";
public static final String PASSWORD = "******";
private static final String FIREBASE_URL = "https://walkingschoolbus.firebaseIO.com";
/** Keep track of the login task to ensure we can cancel it if requested. */
private UserLoginTask mAuthTask = null;
// UI references
private AutoCompleteTextView mEmailView;
private EditText mPasswordView;
private View mProgressView;
private View mLoginFormView;
private String userEmail;
public Boolean userApproved = false;
// A local class to hold the results of login process
private class LoginResults {
private Boolean authSuccess;
private FirebaseError loginError;
public LoginResults(FirebaseError error, Boolean success) {
this.authSuccess = success;
this.loginError = error;
}
public void setError(FirebaseError error) {
this.loginError = error;
}
public void setAuthSuccess(Boolean success) {
this.authSuccess = success;
}
public Boolean getAuthSuccess() {
return this.authSuccess;
}
public int getErrorCode() {
return this.loginError.getCode();
}
public FirebaseError getError() {
return this.loginError;
}
}
private LoginResults loginResults =
new LoginResults(FirebaseError.fromCode(FirebaseError.UNKNOWN_ERROR), false);
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Firebase.setAndroidContext(this);
setContentView(R.layout.activity_login);
// Set up the login form
mEmailView = (AutoCompleteTextView) findViewById(R.id.email);
populateAutoComplete();
mPasswordView = (EditText) findViewById(R.id.password);
mPasswordView.setOnEditorActionListener(
new TextView.OnEditorActionListener() {
@Override
public boolean onEditorAction(TextView textView, int id, KeyEvent keyEvent) {
if (id == R.id.login || id == EditorInfo.IME_NULL) {
attemptLogin();
return true;
}
return false;
}
});
// Initialize the buttons to login, register, or send reset email
Button mEmailSignInButton = (Button) findViewById(R.id.email_sign_in_button);
Button mRegisterButton = (Button) findViewById(R.id.email_register_button);
Button mForgetPassword = (Button) findViewById(R.id.forget_password);
mEmailSignInButton.setOnClickListener(
new OnClickListener() {
@Override
public void onClick(View view) {
attemptLogin();
}
});
mRegisterButton.setOnClickListener(
new OnClickListener() {
@Override
public void onClick(View view) {
startRegister();
}
});
mForgetPassword.setOnClickListener(
new OnClickListener() {
@Override
public void onClick(View view) {
forgetPassword();
}
});
mLoginFormView = findViewById(R.id.login_form);
mProgressView = findViewById(R.id.login_progress);
}
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();
}
}
}
private void startRegister() {
finish();
Intent myIntent = new Intent(LoginActivity.this, RegisterActivity.class);
startActivity(myIntent);
}
/**
* 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);
userEmail = email;
mAuthTask = new UserLoginTask(email, password);
mAuthTask.execute((Void) null);
}
}
private void forgetPassword() {
mEmailView.setError(null);
String email = mEmailView.getText().toString();
boolean cancel = false;
View focusView = null;
// 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 sending email
// form field with an error
focusView.requestFocus();
} else {
// Send change password email to user email address
Firebase ref = new Firebase(FIREBASE_URL);
ref.resetPassword(
email,
new Firebase.ResultHandler() {
@Override
public void onSuccess() {
Context context = getApplicationContext();
CharSequence text = "Password changing email has been successfully sent!";
int duration = Toast.LENGTH_SHORT;
Toast toast = Toast.makeText(context, text, duration);
toast.show();
}
@Override
public void onError(FirebaseError firebaseError) {
// error encountered
Context context = getApplicationContext();
CharSequence text = "Fail to send Email: " + firebaseError;
int duration = Toast.LENGTH_SHORT;
Toast toast = Toast.makeText(context, text, duration);
toast.show();
}
});
}
}
private boolean isEmailValid(String email) {
return email.contains("@") && email.contains(".");
}
private boolean isPasswordValid(String password) {
return password.length() >= 0;
}
/** Shows the progress UI and hides the login form. */
@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);
}
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. */
public class UserLoginTask extends AsyncTask<Void, Void, LoginResults> {
private final String mEmail;
private final String mPassword;
UserLoginTask(String email, String password) {
mEmail = email;
mPassword = password;
}
@Override
protected LoginResults doInBackground(Void... params) {
Firebase ref = new Firebase(FIREBASE_URL);
ref.authWithPassword(
mEmail,
mPassword,
new Firebase.AuthResultHandler() {
@Override
public void onAuthenticated(AuthData authData) {
System.out.println(
"User ID: " + authData.getUid() + ", Provider: " + authData.getProvider());
loginResults.setAuthSuccess(true);
userEmail = mEmail;
}
@Override
public void onAuthenticationError(FirebaseError firebaseError) {
// There was an error
loginResults.setAuthSuccess(false);
loginResults.setError(firebaseError);
}
});
try {
// Simulate network access
Thread.sleep(2000);
} catch (InterruptedException e) {
return loginResults;
}
return loginResults;
}
@Override
protected void onPostExecute(final LoginResults loginResults) {
mAuthTask = null;
showProgress(false);
Firebase ref = new Firebase(FIREBASE_URL);
Query userRef = ref.child("users").orderByChild("email").equalTo(userEmail);
if (loginResults.getAuthSuccess()) {
// Check if the user has routeID or childrenIDs to make sure the user is already approved
// and assigned
// a route or a list of children
userRef.addListenerForSingleValueEvent(
new ValueEventListener() {
@Override
public void onDataChange(DataSnapshot snapshot) {
for (DataSnapshot postSnapshot : snapshot.getChildren()) {
Map<String, Object> userMap = (Map<String, Object>) postSnapshot.getValue();
if (userMap.get("routeID") != null || userMap.get("childrenIDs") != null) {
userApproved = true;
}
}
if (userApproved) {
// Transit to check list screen and pass in password and email
finish();
Intent myIntent = new Intent(LoginActivity.this, ChecklistActivity.class);
myIntent.putExtra(CHECKLIST, mEmail);
myIntent.putExtra(PASSWORD, mPassword);
myIntent.putExtra("from", "login");
LoginActivity.this.startActivity(myIntent);
finish();
} else {
// User not approved, do not show check list
Context context = getApplicationContext();
CharSequence text = "User is not approved by school admin!";
int duration = Toast.LENGTH_LONG;
Toast toast = Toast.makeText(context, text, duration);
toast.show();
}
}
@Override
public void onCancelled(FirebaseError firebaseError) {
System.out.println("The read failed: " + firebaseError.getMessage());
}
});
} else {
// If the login was unsuccessful, catch some common errors.
switch (loginResults.loginError.getCode()) {
case FirebaseError.USER_DOES_NOT_EXIST:
{
mEmailView.setError("User does not exist");
mEmailView.requestFocus();
break;
}
case FirebaseError.INVALID_PASSWORD:
{
mPasswordView.setError(getString(R.string.error_incorrect_password));
mPasswordView.requestFocus();
break;
}
case FirebaseError.INVALID_EMAIL:
{
mEmailView.setError("Please input a valid email");
mEmailView.requestFocus();
break;
}
case FirebaseError.NETWORK_ERROR:
{
Context context = getApplicationContext();
CharSequence text = "Network error, try again later";
int duration = Toast.LENGTH_SHORT;
Toast toast = Toast.makeText(context, text, duration);
toast.show();
break;
}
default:
{
// Show default "unknown error" message
Context context = getApplicationContext();
CharSequence text = loginResults.loginError.toString();
int duration = Toast.LENGTH_SHORT;
Toast toast = Toast.makeText(context, text, duration);
toast.show();
break;
}
}
}
}
@Override
protected void onCancelled() {
mAuthTask = null;
showProgress(false);
}
}
}
