textfieldinputconstraintsdemo.java

J2ME手机游戏开发技术详解,适合初学者阅读使用

import javax.microedition.midlet.MIDlet;
import javax.microedition.lcdui.*;
public class TextFieldInputConstraintsDemo extends MIDlet implements CommandListener {
    private Command exitCommand = new Command("Exit", Command.EXIT, 1);
    private Form mainForm;
    public TextFieldInputConstraintsDemo() {
        mainForm = new Form("TextField演示");
    }
    protected void startApp() {

            mainForm.append(
	            new TextField("文本", "", 30, TextField.ANY));
            mainForm.append(
		    new TextField("邮箱", "", 30, TextField.EMAILADDR));
            mainForm.append(
                    new TextField("数字", "", 30, TextField.NUMERIC));
            mainForm.append(
                    new TextField("小数", "", 30, TextField.DECIMAL));
            mainForm.append(
                    new TextField("电话", "", 30, TextField.PHONENUMBER));
            mainForm.append(
                    new TextField("链接", "", 30, TextField.URL));
            mainForm.append(
                    new TextField("密码", "", 30, TextField.PASSWORD));
            mainForm.addCommand(exitCommand);
            mainForm.setCommandListener(this);
            Display.getDisplay(this).setCurrent(mainForm);
    }
    public void commandAction(Command c, Displayable s) {
	if (c == exitCommand) {
	    destroyApp(false);
	    notifyDestroyed();
	}	
    }
    protected void destroyApp(boolean unconditional) {
    }
    protected void pauseApp() {
    }
}