Android Open Source - ribbit Login Activity

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License

The source code is released under:
MIT License
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Java Source Code

package com.lleshiart.ribbit;
/*ww w.  ja v a2 s .  c om*/
import android.app.Activity;
import android.app.AlertDialog;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.Window;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;

import com.parse.LogInCallback;
import com.parse.ParseException;
import com.parse.ParseUser;

public class LoginActivity extends Activity {

  protected EditText mUsername;
  protected EditText mPassword;
  protected Button mLoginButton;
  
  protected TextView mSignUpTextView;
  protected TextView mForgotPasswordTextView;
  
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);
    setContentView(R.layout.activity_login);

    mForgotPasswordTextView = (TextView) findViewById(R.id.forgotPasswordText);
    mForgotPasswordTextView.setOnClickListener(new OnClickListener() {
      
      @Override
      public void onClick(View v) {
        Intent intent = new Intent(LoginActivity.this, ForgotPasswordActivity.class);
        startActivity(intent);
      }
    });
    
    mSignUpTextView = (TextView) findViewById(R.id.signupText);
    mSignUpTextView.setOnClickListener(new OnClickListener() {
      
      @Override
      public void onClick(View v) {
        Intent intent = new Intent(LoginActivity.this, SignUpActivity.class);
        startActivity(intent);
      }
    });
    
    mUsername = (EditText)findViewById(R.id.usernameField);
    mPassword = (EditText)findViewById(R.id.passwordField);
    mLoginButton = (Button)findViewById(R.id.loginButton);
    mLoginButton.setOnClickListener(new View.OnClickListener() {
      
      @Override
      public void onClick(View v) {
        String username =  mUsername.getText().toString();
        String password =  mPassword.getText().toString();
        
        username = username.trim();
        password = password.trim();
        
        if (username.isEmpty() || password.isEmpty()) {
          AlertDialog.Builder builder = new AlertDialog.Builder(LoginActivity.this);
          builder.setMessage(R.string.login_error_message)
            
            .setTitle(R.string.login_error_title)
            .setPositiveButton(android.R.string.ok, null);
          AlertDialog dialog = builder.create();
          dialog.show();
        }
        else {
          // Login
          setProgressBarIndeterminateVisibility(true);
          
          ParseUser.logInInBackground(username, password, new LogInCallback() {
            @Override
            public void done(ParseUser user, ParseException e) {
              setProgressBarIndeterminateVisibility(false);
              
              if (e == null) {
                // Success!
                Intent intent = new Intent(LoginActivity.this, MainActivity.class);
                intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK);
                startActivity(intent);
              }
              else {
                AlertDialog.Builder builder = new AlertDialog.Builder(LoginActivity.this);
                builder.setMessage(e.getMessage())
                  
                  .setTitle(R.string.login_error_title)
                  .setPositiveButton(android.R.string.ok, null);
                AlertDialog dialog = builder.create();
                dialog.show();
              }
            }
          });
        }
      }
    });
  }
}
Java Source Code List
