radiobuttonexample.java

j2me的1套UI框架,可以帮助开发者迅速的开发j2me应用程序.

package org.j4me.examples.ui.components;

import org.j4me.logging.*;
import org.j4me.ui.*;
import org.j4me.ui.components.*;

/**
 * Example of a <code>RadioButton</code> component.
 */
public class RadioButtonExample
	extends Dialog
{
	/**
	 * The previous screen.
	 */
	private DeviceScreen previous;
	
	/**
	 * The radio button.
	 */
	private RadioButton button;
	
	/**
	 * Constructs a screen that shows a <code>RadioButton</code> component in action.
	 * 
	 * @param previous is the screen to return to once this done.
	 */
	public RadioButtonExample (DeviceScreen previous)
	{
		this.previous = previous;
		
		// Set the title and menu.
		setTitle( "RadioButton Example" );
		setMenuText( "Back", null );

		// Add the phone number box.
		button = new RadioButton();
		button.setLabel( "Log Levels" );
		
		button.append( Level.DEBUG.toString() );
		button.append( Level.INFO.toString() );
		button.append( Level.WARN.toString() );
		button.append( Level.ERROR.toString() );
		button.append( Level.OFF.toString() );
		
		button.setSelectedIndex( 1 );  // INFO
		
		append( button );
	}

	/**
	 * Takes the user to the previous screen.
	 */
	protected void declineNotify ()
	{
		previous.show();
	}
}