Back to project page GroupGoal.
The source code is released under:
GNU General Public License
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package com.cs121.groupgoal; /*from w w w . ja v a 2s.c o m*/ import android.app.Activity; import android.app.ProgressDialog; import android.content.Intent; import android.os.Bundle; import android.view.KeyEvent; import android.view.MenuItem; import android.view.View; import android.view.inputmethod.EditorInfo; import android.widget.Button; import android.widget.EditText; import android.widget.TextView; import android.widget.Toast; import com.cs121.groupgoal.R; import com.parse.LogInCallback; import com.parse.ParseException; import com.parse.ParseUser; /** * Activity which displays a login screen to the user, offering registration as well. */ public class LoginActivity extends Activity { // UI references. private EditText usernameEditText; private EditText passwordEditText; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_login); getActionBar().setDisplayShowTitleEnabled(false); // Set up the login form. usernameEditText = (EditText) findViewById(R.id.username); passwordEditText = (EditText) findViewById(R.id.password); passwordEditText.setOnEditorActionListener(new TextView.OnEditorActionListener() { @Override public boolean onEditorAction(TextView v, int actionId, KeyEvent event) { if (actionId == R.id.edittext_action_login || actionId == EditorInfo.IME_ACTION_UNSPECIFIED) { login(); return true; } return false; } }); // Set up the submit button click handler Button actionButton = (Button) findViewById(R.id.action_button); actionButton.setOnClickListener(new View.OnClickListener() { public void onClick(View view) { login(); } }); } private void login() { String username = usernameEditText.getText().toString().trim(); String password = passwordEditText.getText().toString().trim(); // Validate the log in data boolean validationError = false; StringBuilder validationErrorMessage = new StringBuilder(getString(R.string.error_intro)); if (username.length() == 0) { validationError = true; validationErrorMessage.append(getString(R.string.error_blank_username)); } if (password.length() == 0) { if (validationError) { validationErrorMessage.append(getString(R.string.error_join)); } validationError = true; validationErrorMessage.append(getString(R.string.error_blank_password)); } validationErrorMessage.append(getString(R.string.error_end)); // If there is a validation error, display the error if (validationError) { Toast.makeText(LoginActivity.this, validationErrorMessage.toString(), Toast.LENGTH_LONG) .show(); return; } // Set up a progress dialog final ProgressDialog dialog = new ProgressDialog(LoginActivity.this); dialog.setMessage(getString(R.string.progress_login)); dialog.show(); // Call the Parse login method ParseUser.logInInBackground(username, password, new LogInCallback() { @Override public void done(ParseUser user, ParseException e) { dialog.dismiss(); if (e != null) { // Show the error message Toast.makeText(LoginActivity.this, e.getMessage(), Toast.LENGTH_LONG).show(); } else { // Start an intent for the dispatch activity Intent intent = new Intent(LoginActivity.this, MainActivity.class); intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_NEW_TASK); startActivity(intent); } } }); } @Override public boolean onOptionsItemSelected(MenuItem item) { // Handle action bar item clicks here. The action bar will // automatically handle clicks on the Home/Up button, so long // as you specify a parent activity in AndroidManifest.xml. int id = item.getItemId(); if (id == R.id.action_settings) { return true; } return super.onOptionsItemSelected(item); } }