Creating the main MIDlet

MediaSamplerMIDlet class

1. Create the MediaSamplerMIDlet class

2. Import the required classes and assign this class to the com.nokia.example.mmapi.mediasampler package.

   package com.nokia.example.mmapi.mediasampler;
   
   import javax.microedition.midlet.*;
   import javax.microedition.lcdui.*;
   
   import com.nokia.example.mmapi.mediasampler.data.MediaFactory;
   import com.nokia.example.mmapi.mediasampler.viewer.MediaList;
   
   

3. Set MediaSamplerMIDlet to extend MIDlet.

   /**
    * MMAPI example MIDlet class.
    */
   public class MediaSamplerMIDlet extends MIDlet
   {
   

4. Write the below code to construct the Midlet.

       private final MediaList list;
   
       public MediaSamplerMIDlet()
       {
           MediaFactory.setMidlet(this);
           list = new MediaList(this);
       }
   
   

   Create the required startApp MIDlet method.

       /**
        * Overriden MIDlet method
        */
       public void startApp()
       {
           Displayable current = Display.getDisplay(this).getCurrent();
           if (current == null)
           {
               // first call
               Display.getDisplay(this).setCurrent(list);
           }
           else
           {
               Display.getDisplay(this).setCurrent(current);
           }
       }
   
   

   Create the other two required MIDlet methods

       /**
        * Overriden MIDlet method
        */
       public void pauseApp()
       {
   
       }
   
       /**
        * Overriden MIDlet method.
        */
       public void destroyApp(boolean unconditional)
       {
           list.releaseResources();
       }
   
   

5. Create methods for exiting the MIDlet.

       /**
        * Exits the MIDlet. Called when exit command is selected from the
        * MediaList.
        */
       public void listExit()
       {
           exitRequested();
       }
   
       /**
        * Exits the MIDlet.
        */
       private void exitRequested()
       {
           destroyApp(false);
           notifyDestroyed();
       }
   
   

6. Create a method for displaying error alerts.

       /**
        * Displays an error message in Alert.
        * 
        * @param message
        *            String as message to display.
        */
       public void alertError(String message)
       {
           Alert alert = new Alert("Error", message, null, AlertType.ERROR);
           Display display = Display.getDisplay(this);
           Displayable current = display.getCurrent();
           if (!(current instanceof Alert))
           {
               // This next call can't be done when current is an Alert
               display.setCurrent(alert, current);
           }
       }
   
   }