gaugetest.java

微型JAVA人编写的J2ME教材! 中带的原代码!简单易懂

//GaugeTest.java
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
public class GaugeTest extends MIDlet implements ItemStateListener
{
	private Display display;
	Gauge g1 ;
	Gauge g2 ;
	public GaugeTest()
	{
		display = Display.getDisplay(this);
	}
	public void startApp()
	{
		Form f = new Form("FormTest") ;
		g1 = new Gauge("NoIteractive Gauge",false,100,40);
		g2 = new Gauge("Interactive Gauge",true,100,40);
		f.append(g1) ;
		f.append(g2) ;
		f.setItemStateListener(this) ;
		display.setCurrent(f) ;
	}
	public void pauseApp(){}
	public void destroyApp(boolean unconditional){}
	public void itemStateChanged(Item item)
	{
		Gauge tmp = (Gauge)item ;
		if(tmp.getLabel().equals("Gauge2"))
		{
			g1.setValue(tmp.getValue()) ;
		}
	}
}