Android Open Source - PlayTogether Login Activity

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Back to project page PlayTogether.

License

The source code is released under:

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Java Source Code

package com.rockylearnstodevelop.playtogether;
/*w w  w  .jav  a 2 s  .c  o  m*/
import android.app.Activity;
import android.app.AlertDialog;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.view.Window;
import android.widget.Button;
import android.widget.TextView;

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

public class LoginActivity extends Activity {

  protected TextView mUsername;
  protected TextView mPassword;
  
  protected Button mLoginButton;
  
  private String userName;
  private String password;
  
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);
    setContentView(R.layout.activity_login);
    
    TextView signupTextView = (TextView) findViewById(R.id.signup);
    signupTextView.setOnClickListener(new View.OnClickListener() {
      
      @Override
      public void onClick(View v) {
        Intent intent = new Intent(LoginActivity.this, SignupActivity.class);
        startActivity(intent);
      }
    });
    
    mUsername = (TextView) findViewById(R.id.userName);
    mPassword = (TextView) findViewById(R.id.password);

    mLoginButton = (Button) findViewById(R.id.login_button);
    mLoginButton.setOnClickListener(new View.OnClickListener() {
      
      @Override
      public void onClick(View v) {
        userName = mUsername.getText().toString();
        password = mPassword.getText().toString();
        
        userName = userName.trim();      
        password = password.trim();
        
        //Check if the name and password if empty
        if(userName.isEmpty() || password.isEmpty()){
          //warning dialog
          AlertDialog.Builder builder = new AlertDialog.Builder(LoginActivity.this);
          builder.setMessage(R.string.log_in_error_message);
          builder.setTitle(R.string.log_in_error_title);
          builder.setPositiveButton(android.R.string.ok, null);
          AlertDialog dialog = builder.create();
          dialog.show();
        }
        else{
          //check if the user name and password are correct
          setProgressBarIndeterminateVisibility(true);
          ParseUser.logInInBackground(userName, password, new LogInCallback() {
            
            @Override
            public void done(ParseUser user, ParseException e) {
              setProgressBarIndeterminateVisibility(false);
              if(e == null){
                //start the main activity
                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());
                builder.setTitle(R.string.log_in_error_title);
                builder.setPositiveButton(android.R.string.ok, null);
                AlertDialog dialog = builder.create();
                dialog.show();
              }
            }
          });
        }
      }
    });
  }

  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.login, menu);
    return true;
  }

}

Java Source Code List