Android Open Source - VisEQ Login Activity

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The source code is released under:
Copyright (c) 2012, Spotify AB All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:...
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Java Source Code

/*
 Copyright (c) 2012, Spotify AB/* www.ja v  a2s  . co m*/
 All rights reserved.
 
 Redistribution and use in source and binary forms, with or without
 modification, are permitted provided that the following conditions are met:
 * Redistributions of source code must retain the above copyright
 notice, this list of conditions and the following disclaimer.
 * Redistributions in binary form must reproduce the above copyright
 notice, this list of conditions and the following disclaimer in the
 documentation and/or other materials provided with the distribution.
 * Neither the name of Spotify AB nor the names of its contributors may 
 be used to endorse or promote products derived from this software 
 without specific prior written permission.
 
 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 DISCLAIMED. IN NO EVENT SHALL SPOTIFY AB BE LIABLE FOR ANY DIRECT, INDIRECT,
 INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 
 LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, 
 OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
 OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/**
 * Mostly code from the Google Android LoginActivity Template 
 */
package com.lsu.vizeq;

import javax.crypto.Cipher;

import android.animation.Animator;
import android.animation.AnimatorListenerAdapter;
import android.annotation.TargetApi;
import android.app.ActionBar;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.SharedPreferences;
import android.graphics.Color;
import android.graphics.Typeface;
import android.graphics.drawable.ColorDrawable;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.text.TextUtils;
import android.view.KeyEvent;
import android.view.Menu;
import android.view.MenuItem;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnTouchListener;
import android.view.inputmethod.EditorInfo;
import android.view.inputmethod.InputMethodManager;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ScrollView;
import android.widget.TextView;
import android.widget.Toast;

import com.lsu.vizeq.ServiceBinder.ServiceBinderDelegate;
import com.lsu.vizeq.SpotifyService.LoginDelegate;

/**
 * Activity which displays a login screen to the user, offering registration as
 * well.
 */
public class LoginActivity extends BackableActivity {

  /**
   * The default email to populate the email field with.
   */
  public static final String EXTRA_EMAIL = "com.example.android.authenticatordemo.extra.EMAIL";

  // Values for email and password at the time of the login attempt.
  private String mEmail;
  private String mPassword;

  public static boolean logCheck = false;
  public static boolean backToPlayer = false;
  
  // UI references.
  private EditText mEmailView;
  private EditText mPasswordView;
  private View mLoginFormView;
  private View mLoginStatusView;
  private TextView mLoginStatusMessageView;

  private ServiceBinder binder;
  private Cipher aes;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    setContentView(R.layout.activity_login);
    ActionBar actionBar = getActionBar();
    actionBar.setBackgroundDrawable(new ColorDrawable(getResources().getColor(R.color.LightGreen)));
    int titleId = getResources().getIdentifier("action_bar_title", "id", "android");
      TextView yourTextView = (TextView) findViewById(titleId);
      yourTextView.setTextColor(Color.WHITE);
      Typeface titleFont = Typeface.createFromAsset(getAssets(), "Mohave-SemiBold.otf");
      yourTextView.setTypeface(titleFont);
      yourTextView.setTextSize(22);

    Typeface font = Typeface.createFromAsset(getAssets(), "Mission Gothic Regular.otf");
    TextView loginExplain = (TextView) findViewById(R.id.ExplainSignIn);
    Button signInButton = (Button) findViewById(R.id.sign_in_button);
    loginExplain.setTypeface(font);
    loginExplain.setTextSize(20); //40 pt 153, 153, 153
    loginExplain.setTextColor(getResources().getColor(R.color.Grey85));
    
    SharedPreferences memory = getSharedPreferences("VizEQ",MODE_PRIVATE);
    int posi = memory.getInt("colorPos", -1);
    if (posi > 0) VizEQ.numRand = posi;    
    switch (VizEQ.numRand)
    {
      case 1:
        actionBar.setBackgroundDrawable(new ColorDrawable(getResources().getColor(R.color.Red)));
        signInButton.setBackgroundColor(getResources().getColor(R.color.Red));
        break;
      case 2:
        actionBar.setBackgroundDrawable(new ColorDrawable(getResources().getColor(R.color.Green)));    
        signInButton.setBackgroundColor(getResources().getColor(R.color.Green));
        break;
      case 3:
        actionBar.setBackgroundDrawable(new ColorDrawable(getResources().getColor(R.color.Blue)));
        signInButton.setBackgroundColor(getResources().getColor(R.color.Blue));
        break;
      case 4:
        actionBar.setBackgroundDrawable(new ColorDrawable(getResources().getColor(R.color.Purple)));
        signInButton.setBackgroundColor(getResources().getColor(R.color.Purple));
        break;
      case 5:
        actionBar.setBackgroundDrawable(new ColorDrawable(getResources().getColor(R.color.Orange)));
        signInButton.setBackgroundColor(getResources().getColor(R.color.Orange));
        break;    
    }
    
    ScrollView loginForm = (ScrollView) findViewById(R.id.login_form);
    loginForm.setOnTouchListener(new OnTouchListener(){

      @Override
      public boolean onTouch(View arg0, MotionEvent arg1) {
        InputMethodManager imm = (InputMethodManager)getSystemService(Context.INPUT_METHOD_SERVICE);
        imm.hideSoftInputFromWindow(arg0.getWindowToken(), 0);
        return false;
      }
      
    });

    // Set up the login form.
    mEmail = getIntent().getStringExtra(EXTRA_EMAIL);
    mEmailView = (EditText) findViewById(R.id.email);

    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;
      }
    });

    mPassword = memory.getString("word", "");
    mEmail = memory.getString("user", "");
    if (mEmail.compareTo("") != 0)
      mEmailView.setText(mEmail);
    if (mPassword.compareTo("") != 0)
      mPasswordView.setText(mPassword);
      //aes.init(Cipher.DECRYPT_MODE, key);
      //mPassword = aes.doFinal(mPassword);

    mLoginFormView = findViewById(R.id.login_form);
    mLoginStatusView = findViewById(R.id.login_status);
    mLoginStatusMessageView = (TextView) findViewById(R.id.login_status_message);

    findViewById(R.id.sign_in_button).setOnClickListener(new View.OnClickListener() {
      @Override
      public void onClick(View view) {
        attemptLogin();
      }
    });
    
    findViewById(R.id.sign_in_button).setOnTouchListener(new View.OnTouchListener() {
      @Override
      public boolean onTouch(View arg0, MotionEvent arg1)
      {
        if (arg1.getAction() == MotionEvent.ACTION_UP || arg1.getAction() == MotionEvent.ACTION_CANCEL)
          arg0.setAlpha(1);
        else if (arg1.getAction() == MotionEvent.ACTION_DOWN)
          arg0.setAlpha(0.7f);
        return false;
      }
    });
    

    binder = new ServiceBinder(this);
    binder.bindService(new ServiceBinderDelegate() {

      @Override
      public void onIsBound() {

      }
    });

  }

  @Override
  protected void onDestroy() {
    binder.doUnbindService();
    super.onDestroy();
  }

  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    super.onCreateOptionsMenu(menu);
    getMenuInflater().inflate(R.menu.activity_login, menu);
    return true;
  }

  /**
   * 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.
   */
  public void attemptLogin() {

    // Reset errors.
    mEmailView.setError(null);
    mPasswordView.setError(null);
    
    // Store values at the time of the login attempt.
    mEmail = mEmailView.getText().toString();
    mPassword = mPasswordView.getText().toString();
    
    SharedPreferences memory = getSharedPreferences("VizEQ", MODE_PRIVATE);
    if (mPassword != "")
    {
      //aes = Cipher.getInstance("AES/ECB/PKCS5Padding");
      //aes.init(Cipher.ENCRYPT_MODE, key);
      SharedPreferences.Editor saver = memory.edit();
      saver.putString("word", mPassword);
      saver.putString("user", mEmail);
      saver.commit();
    }

    

    boolean cancel = false;
    View focusView = null;

    // Check for a valid password.
    if (TextUtils.isEmpty(mPassword)) {
      mPasswordView.setError(getString(R.string.error_field_required));
      focusView = mPasswordView;
      cancel = true;
    } else if (mPassword.length() < 1) {
      mPasswordView.setError(getString(R.string.error_invalid_password));
      focusView = mPasswordView;
      cancel = true;
    }

    // Check for a valid email address.
    if (TextUtils.isEmpty(mEmail)) {
      mEmailView.setError(getString(R.string.error_field_required));
      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.
      mLoginStatusMessageView.setText(R.string.login_progress_signing_in);
      showProgress(true);

      // Tell the service to login
      binder.getService().login(mEmail, mPassword, new LoginDelegate() {

        @Override
        public void onLogin() {
          Toast.makeText(LoginActivity.this, "Logged in successfully!", Toast.LENGTH_SHORT).show();
          Installation.writeInstallationFile(LoginActivity.this, mEmail);
          showProgress(false);
          logCheck =true;
          if (backToPlayer) {
            Intent goToPlayer = new Intent(LoginActivity.this, PlayerActivity.class);
            startActivity(goToPlayer);
            finish();
          }
          Intent roleIntent = new Intent(LoginActivity.this, HostActivity.class);
          startActivity(roleIntent);

        }

        @Override
        public void onLoginFailed(String message) {

          AlertDialog.Builder builder = new AlertDialog.Builder(LoginActivity.this);

          builder.setMessage(message).setTitle("Login Error");
          builder.setPositiveButton("ok", new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog, int id) {

            }
          });

          AlertDialog dialog = builder.create();
          dialog.show();

          showProgress(false);

        }
      });
    }
  }

  /**
   * 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);

      mLoginStatusView.setVisibility(View.VISIBLE);
      mLoginStatusView.animate().setDuration(shortAnimTime).alpha(show ? 1 : 0).setListener(new AnimatorListenerAdapter() {
        @Override
        public void onAnimationEnd(Animator animation) {
          mLoginStatusView.setVisibility(show ? View.VISIBLE : View.GONE);
        }
      });

      mLoginFormView.setVisibility(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);
        }
      });
    } else {
      // The ViewPropertyAnimator APIs are not available, so simply show
      // and hide the relevant UI components.
      mLoginStatusView.setVisibility(show ? View.VISIBLE : View.GONE);
      mLoginFormView.setVisibility(show ? View.GONE : View.VISIBLE);
    }
  }
  
  @Override
  public boolean onOptionsItemSelected(MenuItem item) {
    // Handle item selection
    switch (item.getItemId()) {
    case R.id.action_settings:
      Intent nextIntent  = new Intent(LoginActivity.this, ProfileActivity.class);
      startActivity(nextIntent);
      break;
    case R.id.about:
      Intent nextIntent2  = new Intent(LoginActivity.this, AboutActivity.class);
      startActivity(nextIntent2);
      break;
    case R.id.menu_forgot_password:
      break;
    case R.id.premium:
      AlertDialog.Builder builder = new AlertDialog.Builder(LoginActivity.this);
      InputMethodManager imm = (InputMethodManager)getSystemService(Context.INPUT_METHOD_SERVICE);
      imm.hideSoftInputFromWindow(mEmailView.getWindowToken(), 0);
          builder.setMessage("Are you a college student?")
                 .setPositiveButton("Yes", new DialogInterface.OnClickListener() {
                     public void onClick(DialogInterface dialog, int id) 
                     {
                       startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse("https://www.spotify.com/us/student/")));
                     }
                 })
                 .setNegativeButton("No", new DialogInterface.OnClickListener() {
                   public void onClick(DialogInterface dialog, int id)
                   {
                     startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse("https://www.spotify.com/us/password-reset/")));
                   }
                 });
          builder.show();
                 break;
       default:
         super.onOptionsItemSelected(item);
    }
    return true;
  }

}
Java Source Code List
