J2ME

Development Platform:

Java

WelcomeCanvas.java：Code Content

							package phoneLeter;
import javax.microedition.lcdui.Canvas;
import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.CommandListener;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.Graphics;
import javax.microedition.lcdui.Font;
//欢迎界面
public class WelcomeCanvas extends Canvas implements CommandListener {
	private Command cmdPhone=new Command("通讯录",Command.SCREEN,1);
	private Command cmdExit=new Command("退出",Command.EXIT,1);
	private phoneMIDlet pm;
	
	public WelcomeCanvas(phoneMIDlet pm)
	{
		this.pm=pm;
		this.addCommand(cmdPhone);
		this.addCommand(cmdExit);
		this.setCommandListener(this);
	}
	
	protected void paint(Graphics arg0) {
		// TODO Auto-generated method stub
		String str="欢迎光临";
		arg0.setFont(Font.getFont(Font.FACE_SYSTEM,Font.STYLE_BOLD,Font.SIZE_LARGE));
		arg0.setColor(255,0,0);
		arg0.drawString(str,this.getWidth()/2,50,Graphics.TOP|Graphics.HCENTER);
	}
	public void commandAction(Command arg0, Displayable arg1) {
		if(arg0==cmdPhone)
		{
			pm.changeInterface("phoneList");
		}
		else if(arg0==cmdExit)
		{
			pm.notifyDestroyed();
		}
	}
}

						