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wmbest2/LoginActivity.java

Created March 17, 2011 18:35
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  1. wmbest2 created this gist Mar 17, 2011.
    277 changes: 277 additions & 0 deletions LoginActivity.java
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,277 @@
    package com.vokal.petcheck;

    import android.app.Activity;
    import android.app.AlertDialog;
    import android.app.ProgressDialog;
    import android.content.Context;
    import android.content.DialogInterface;
    import android.content.Intent;
    import android.os.AsyncTask;
    import android.os.Bundle;
    import android.util.Log;
    import android.view.View;
    import android.view.Window;
    import android.widget.Button;
    import android.widget.EditText;
    import android.widget.Toast;

    import com.vokal.petcheck.constants.Constants;
    import com.vokal.petcheck.walk.User;

    import java.util.ArrayList;

    public class LoginActivity extends Activity
    {
    private static final String TAG = "LoginActivity";

    private static final int SECURITY_ACTIVITY = 0;

    private Button mLogin;
    private Button mForgotPassword;
    private EditText mUsername;
    private EditText mPassword;
    private ProgressDialog mDialog;

    private LoginTask mLoginTask;
    private ForgotPasswordLaunchTask mForgotTask;

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState)
    {
    super.onCreate(savedInstanceState);

    requestWindowFeature(Window.FEATURE_NO_TITLE);

    setContentView(R.layout.login_activity);

    ArrayList<Object> retained = (ArrayList<Object>) getLastNonConfigurationInstance();

    if (retained != null) {
    mLoginTask = (LoginTask) retained.get(0);
    mForgotTask = (ForgotPasswordLaunchTask) retained.get(1);
    }

    if (mLoginTask != null) {
    if (!mLoginTask.getStatus().equals(AsyncTask.Status.FINISHED)) {
    mLoginTask.setContext(this);
    mDialog = ProgressDialog.show(LoginActivity.this,
    "Loading", "Logging In");
    }
    }

    if (mForgotTask != null) {
    if (!mForgotTask.getStatus().equals(AsyncTask.Status.FINISHED)) {
    mForgotTask.setContext(this);
    mDialog = ProgressDialog.show(LoginActivity.this,
    "Loading", "Retrieving Security Question");
    }
    }

    mLogin = (Button) findViewById(R.id.login_submit);
    mForgotPassword = (Button) findViewById(R.id.login_forgot);
    mUsername = (EditText) findViewById(R.id.login_username);
    mPassword = (EditText) findViewById(R.id.login_password);

    mLogin.setOnClickListener(mLoginListener);
    mForgotPassword.setOnClickListener(mLoginListener);

    }

    @Override
    public void onPause() {
    super.onPause();
    if (mDialog != null) {
    mDialog.dismiss();
    }
    }

    @Override
    public void onStop() {
    super.onStop();
    if (mDialog != null) {
    mDialog.dismiss();
    }
    }

    @Override
    public void onDestroy() {
    super.onDestroy();
    if (mDialog != null) {
    mDialog.dismiss();
    }
    }

    @Override
    public Object onRetainNonConfigurationInstance() {
    ArrayList<Object> retainedObjects = new ArrayList<Object>();
    retainedObjects.add(mLoginTask);
    retainedObjects.add(mForgotTask);
    return retainedObjects;
    }

    public void onActivityResult(int aRequestCode, int aResultCode, Intent aIntent) {
    if (aRequestCode == SECURITY_ACTIVITY) {
    if (aResultCode == RESULT_OK) {
    launchWelcomeScreen();
    }
    }
    }

    public void checkLogin() {
    String username = (mUsername.getText()).toString();
    String password = (mPassword.getText()).toString();

    boolean usernameEmpty = username.equals("");
    boolean passwordEmpty = password.equals("");

    if(!(usernameEmpty) &&!(passwordEmpty)) {
    mLoginTask = new LoginTask();
    mLoginTask.setContext(this);
    mLoginTask.execute(username, password);
    } else if (usernameEmpty && passwordEmpty) {
    Toast.makeText(LoginActivity.this,
    R.string.login_both_empty, Toast.LENGTH_SHORT).show();
    } else if (usernameEmpty) {
    Toast.makeText(LoginActivity.this,
    R.string.login_username_empty, Toast.LENGTH_SHORT).show();
    } else if (passwordEmpty) {
    Toast.makeText(LoginActivity.this,
    R.string.login_password_empty, Toast.LENGTH_SHORT).show();
    }
    }

    public void forgotPressed() {
    final EditText usernameField = new EditText(LoginActivity.this);
    usernameField.setHint("username");
    new AlertDialog.Builder(LoginActivity.this)
    .setTitle("Enter Username")
    .setView(usernameField)
    .setPositiveButton("OK",
    new DialogInterface.OnClickListener() {
    public void onClick(DialogInterface aDialog, int aWhich) {
    String username = usernameField.getText().toString();
    if (!username.equals("")) {
    mForgotTask = new ForgotPasswordLaunchTask();
    mForgotTask.setContext(LoginActivity.this);
    mForgotTask.execute(username);
    }
    }
    })
    .setNegativeButton("Cancel", null)
    .show();
    }

    public View.OnClickListener mLoginListener = new View.OnClickListener() {
    public void onClick(View aView) {
    switch(aView.getId()) {
    case R.id.login_submit:
    checkLogin();
    break;
    case R.id.login_forgot:
    forgotPressed();
    break;
    default:
    break;
    }
    }
    };

    public void launchWelcomeScreen() {
    mUsername.setText("");
    mPassword.setText("");

    Intent i = new Intent();
    i.setClass(LoginActivity.this, WelcomeActivity.class);
    startActivity(i);
    }

    public class LoginTask extends AsyncTask<String, Void, Boolean> {
    private LoginActivity mContext;

    public void setContext(LoginActivity aContext) {
    mContext = aContext;
    }

    public void onPreExecute() {
    LoginActivity.this.mDialog = ProgressDialog.show(LoginActivity.this,
    "Loading", "Logging In");
    }

    public Boolean doInBackground(String... aParams) {
    boolean result = false;

    if (!isCancelled()) {
    result = User.getLogin(aParams[0], aParams[1]);
    }

    return result;
    }

    public void onPostExecute(Boolean aResult) {
    if (!isCancelled()) {
    mContext.clearDialog();
    if (aResult == true) {
    launchWelcomeScreen();
    } else {
    getWrongLoginDialog(LoginActivity.this).show();
    }
    }
    }
    }

    public class ForgotPasswordLaunchTask extends AsyncTask<String, Void, String> {
    private String mUsername;
    private LoginActivity mContext;

    public void setContext(LoginActivity aContext) {
    mContext = aContext;
    }

    public void onPreExecute() {
    mDialog = ProgressDialog.show(LoginActivity.this,
    "Loading", "Retrieving Security Question");
    }

    public String doInBackground(String... aParams) {
    String result = "";

    if (!isCancelled()) {
    mUsername = aParams[0];
    result = User.getSecurityQuestion(aParams[0]);
    }

    return result;
    }

    public void onPostExecute(String aResult) {

    if (!isCancelled()) {
    mContext.clearDialog();
    if (aResult != null && !aResult.equals("")) {
    Intent i = new Intent();
    i.setClass(LoginActivity.this, SecurityQuestionActivity.class);
    i.putExtra(Constants.PARAM_USERNAME, mUsername);
    i.putExtra(Constants.SECURITY_QUESTION, aResult);
    startActivityForResult(i, SECURITY_ACTIVITY);
    } else {
    getWrongLoginDialog(LoginActivity.this).show();
    }
    }
    }
    }

    public void clearDialog() {
    Log.d(TAG, "Clearing Dialog");
    mDialog.dismiss();
    }

    private AlertDialog.Builder getWrongLoginDialog(Context aContext) {
    return new AlertDialog.Builder(aContext)
    .setIcon(android.R.drawable.ic_dialog_alert)
    .setTitle(aContext.getString(R.string.wrong_password))
    .setMessage(aContext.getString(R.string.wrong_password_dialog))
    .setPositiveButton("OK", null);
    }

    }