📄 mainform.java
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package org.gui.com;
import javax.microedition.lcdui.Canvas;
import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.CommandListener;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.Form;
import javax.microedition.midlet.MIDlet;
import javax.microedition.midlet.MIDletStateChangeException;
public class MainForm extends MIDlet implements CommandListener {
private Command exitCommand;
private Command playCommand;
private Command stopCommand;
private MusicCanvas musicCanvas;
private Display display;
/**
* 欢迎界面
*/
private Canvas splash;
public MainForm() {
super();
display = Display.getDisplay(this);
exitCommand = new Command("Exit", Command.EXIT, 1);
playCommand = new Command("Play", Command.SCREEN, 2);
stopCommand = new Command("Stop", Command.SCREEN, 2);
if ((musicCanvas = new MusicCanvas()) != null) {
musicCanvas.addCommand(exitCommand);
musicCanvas.addCommand(playCommand);
musicCanvas.addCommand(stopCommand);
musicCanvas.setCommandListener(this);
}
}
protected void startApp() throws MIDletStateChangeException {
splash = new SplashForm(display,this,musicCanvas);
}
protected void pauseApp() {
}
protected void destroyApp(boolean arg0) throws MIDletStateChangeException {
musicCanvas.stop();
}
public void exit() {
try {
destroyApp(false);
} catch (MIDletStateChangeException e) {
e.printStackTrace();
}
notifyDestroyed();
}
public void commandAction(Command c, Displayable s) {
if (c == exitCommand)
{
musicCanvas.stop();
try{
destroyApp(true);
}catch(MIDletStateChangeException ex){
//ex.printlnStackTace();
}
notifyDestroyed();
} else if (c == playCommand) //播放Wav文件
{
musicCanvas.playsong();
} else if (c == stopCommand) //停止播放
{
musicCanvas.stop();
}
}
}
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