Android Open Source - adamsonelearn Main

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Back to project page adamsonelearn.
License

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

package com.jaselogic.adamsonelearn;
/*  w w w .java  2 s .  co m*/
import android.net.ConnectivityManager;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.app.Activity;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.SharedPreferences;
import android.support.v4.content.LocalBroadcastManager;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ProgressBar;
import android.widget.Toast;

public class Main extends Activity {

  private Button btnLogin;
  private EditText txtStudNo;
  private EditText txtPassword;
  private ProgressBar pb1;
  
  private BroadcastReceiver mBroadcastReceiver = new BroadcastReceiver() {
    
    @Override
    public void onReceive(Context context, Intent intent) {
      Bundle bundle = intent.getExtras();
      String status = bundle.getString(LoginIntentService.EXTRA_STATUS);
      if(status.equals(LoginIntentService.STATUS_VALID)) { //Valid username/password
        onLoginValid();
      } else if (status.equals(LoginIntentService.STATUS_INVALID)) { //Invalid user/pass
        onLoginInvalid();
      } else { //Document was not successfully downloaded.
        onLoginUnsuccessful();
      }
    }
  };
  

  private void onLoginValid() {
    SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
    Intent dash = new Intent(Main.this, Dashboard.class);
    dash.putExtra("PHPSESSID", prefs.getString(LoginIntentService.EXTRA_COOKIE, null));
    dash.putExtra("avatarSrc", prefs.getString(LoginIntentService.EXTRA_AVATAR, null));
    dash.putExtra("name", prefs.getString(LoginIntentService.EXTRA_NAME, null));
    dash.putExtra("studNo", prefs.getString(LoginIntentService.EXTRA_STUDNO, null));
    dash.putExtra("course", prefs.getString(LoginIntentService.EXTRA_COURSE, null));
    dash.putExtra("year", prefs.getString(LoginIntentService.EXTRA_YEAR, null));
    startActivity(dash);
    this.finish();
  }
  
  private void onLoginInvalid()  {
    new AlertDialogBuilder.NeutralDialog("Mali password", 
        "Invalid username/password", Main.this);
    setViewVisibility(View.VISIBLE);    
  }
  
  private void onLoginUnsuccessful() {
    new AlertDialogBuilder.NeutralDialog("Sira net", 
        "May problema net connection mo. Ayusin mo.", Main.this);
    setViewVisibility(View.VISIBLE);      
  }
  
  @Override
  protected void onPause() {
    super.onPause();
    Log.d("PAUSE", "PUSA");
    LocalBroadcastManager.getInstance(getApplicationContext())
      .unregisterReceiver(mBroadcastReceiver);
  };
  
  @Override
  protected void onResume() {
    super.onResume();
    SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
    
    int status = prefs.getInt(LoginIntentService.CONNECTION_STATUS, LoginIntentService.CONNECTION_IDLE);
    switch(status) {
      case LoginIntentService.CONNECTION_CONNECTING:
        setViewVisibility(View.INVISIBLE);
        break;
      case LoginIntentService.CONNECTION_VALID:
        onLoginValid();
        break;
      case LoginIntentService.CONNECTION_INVALID:
        onLoginInvalid();
        break;
      case LoginIntentService.CONNECTION_UNSUCCESSFUL:
        onLoginUnsuccessful();
        break;
      case LoginIntentService.CONNECTION_IDLE:
        break;
    }
    
    Log.d("PAUSE", "RESUMA");
    LocalBroadcastManager.getInstance(getApplicationContext())
      .registerReceiver(mBroadcastReceiver, new IntentFilter(LoginIntentService.NOTIFICATION));
  }
  
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    //get views
    btnLogin = (Button) findViewById(R.id.btn_login);
    txtStudNo = (EditText) findViewById(R.id.txt_studno);
    txtPassword = (EditText) findViewById(R.id.txt_password);
    pb1 = (ProgressBar) findViewById(R.id.progressBar1);
    
    //temp
    txtStudNo.setText("201013888");
    txtPassword.setText("288785");
    
    btnLogin.setOnClickListener(new OnClickListener() {
      
      @Override
      public void onClick(View v) {
        String studNo = txtStudNo.getText().toString().trim();
        String password = txtPassword.getText().toString();
            
        //check if student number edittext is empty
        if(studNo.equals("")) {
          Toast.makeText(Main.this, "Please provide your Adamson University Student Number", Toast.LENGTH_SHORT).show();
        } else if(password.equals("")) { //else if password is empty
          Toast.makeText(Main.this, "Please provide your E-Learning password", Toast.LENGTH_SHORT).show();
        } else { //ready to send login details
          //set visibilities        
          setViewVisibility(View.INVISIBLE);
          
          //If internet connection is present
          if(isNetworkConnected()) {          
            Intent intent = new Intent(Main.this, LoginIntentService.class);
            intent.putExtra(LoginIntentService.EXTRA_STUDNO, studNo);
            intent.putExtra(LoginIntentService.EXTRA_PASSWORD, password);
            startService(intent);
          } else {
            setViewVisibility(View.VISIBLE);
            new AlertDialogBuilder.NeutralDialog("Walang net", 
                "Wala kang net kumonek ka kaya muna.", Main.this);
          }
        }
      }
    });
  }
  
  //Set visibility states of views on connection
  private void setViewVisibility(int viewState) {
    btnLogin.setVisibility(viewState);
    txtStudNo.setVisibility(viewState);
    txtPassword.setVisibility(viewState);
    
    pb1.setVisibility(viewState ^ 4);
  }

  //Check internet state
  private boolean isNetworkConnected() {
      ConnectivityManager cm = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
      return (cm.getActiveNetworkInfo() != null);
  }
  
  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.main, menu);
    return true;
  }

}
Java Source Code List
