Android Open Source - digitalcampus Main Activity

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License

The source code is released under:

MIT License

Java Source Code

package com.llenguatges.digitalcampus;
//ww  w .j av  a 2 s.  c  o  m
import java.util.ArrayList;

import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.Toast;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.GridView;

import com.llenguatges.digitalcampus.adapters.CustomGridViewAdapter;
import com.llenguatges.digitalcampus.exams.ExamsActivity;
import com.llenguatges.digitalcampus.exams.NewExamActivity;
import com.llenguatges.digitalcampus.login.SessionManager;
import com.llenguatges.digitalcampus.objects.Item;
import com.llenguatges.digitalcampus.students.NewStudentActivity;
import com.llenguatges.digitalcampus.students.StudentsActivity;
import com.llenguatges.digitalcampus.subjects.NewSubjectActivity;
import com.llenguatges.digitalcampus.subjects.SubjectsActivity;

public class MainActivity extends Activity {

  private GridView gridView;
  private ArrayList<Item> gridArray = new ArrayList<Item>();
  private CustomGridViewAdapter customGridAdapter;
  private String user;
  private static String USER_EMAIL = "email";
  private SessionManager session;

  /**
   * Called when the activity is first created. 
   * This is where you all of static set up: customize ActionBar. 
   * This method also provides you with a Bundle containing the 
   * activity's previously frozen state, if there was one.
   */
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    session = new SessionManager(getApplicationContext());
    if(session.isLoggedIn()){
      user = session.getUserDetails().get(USER_EMAIL);
    }else{
      Intent iin= getIntent();
          Bundle b = iin.getExtras();
          user = (String) b.getString(USER_EMAIL);
    }
    Toast.makeText(getApplicationContext(), "Welcome "+user, Toast.LENGTH_SHORT).show();
    Bitmap studentsManagerIcon = BitmapFactory.decodeResource(this.getResources(), R.drawable.ic_launcher);
    Bitmap subjectManagerIcon = BitmapFactory.decodeResource(this.getResources(), R.drawable.ic_launcher);
    Bitmap examsIcon = BitmapFactory.decodeResource(this.getResources(), R.drawable.ic_launcher);
    Bitmap exitIcon = BitmapFactory.decodeResource(this.getResources(), R.drawable.ic_launcher);
    gridArray.add(new Item(studentsManagerIcon,"Students Manager"));
    gridArray.add(new Item(subjectManagerIcon,"Subject Manager"));
    gridArray.add(new Item(examsIcon,"Exams"));
    gridArray.add(new Item(exitIcon,"Logout"));
    gridView = (GridView) findViewById(R.id.gridView1);
    customGridAdapter = new CustomGridViewAdapter(this, R.layout.row_grid, gridArray);
    gridView.setAdapter(customGridAdapter);
    gridView.setOnItemClickListener(new OnItemClickListener() { 
      private Intent intent;
      public void onItemClick(AdapterView<?> arg0, View v, int position, long arg3) {
        switch (position){
          case 0:
            intent = new Intent().setClass(MainActivity.this, StudentsActivity.class);
            startActivity(intent);
          break;
          case 1:
            intent = new Intent().setClass(MainActivity.this, SubjectsActivity.class);
            startActivity(intent);
          break;
          case 2:
            intent = new Intent().setClass(MainActivity.this, ExamsActivity.class);
            startActivity(intent);
          break;
          case 3:
            session.logoutUser();
            Toast.makeText(getApplicationContext(), "Goodbye "+user, 
                Toast.LENGTH_SHORT).show();
            finish();
          break;
        }
      } 
    });
  }
  
  /**
   * Initialize the contents of the Activity's standard options menu.
   */
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }
    
    /**
     * This hook is called whenever an item in your options menu is selected.
     */
    public boolean onOptionsItemSelected(MenuItem item) {
      Intent intent;
      switch (item.getItemId()) {
          case android.R.id.home:
              this.finish();
              return true;
          case R.id.main_new_subject:
            intent = new Intent().setClass(MainActivity.this, 
                NewSubjectActivity.class);
        startActivity(intent);
            return true;
          case R.id.main_new_student:
            intent = new Intent().setClass(MainActivity.this, 
                NewStudentActivity.class);
        startActivity(intent);
            return true;
          case R.id.main_new_exam:
            intent = new Intent().setClass(MainActivity.this, 
                NewExamActivity.class);
            intent.putExtra("exam", 0);
        startActivity(intent);
            return true;
          case R.id.main_exit:
            finish();
            return true;
          default:
              return super.onOptionsItemSelected(item);
      }
  }

}

Java Source Code List

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