textfieldsystemconstraintsdemo.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 TextFieldSystemConstraintsDemo extends MIDlet implements CommandListener {
    private Command exitCommand = new Command("Exit", Command.EXIT, 1);
    private Form mainForm;
    public TextFieldSystemConstraintsDemo() {
        mainForm = new Form("TextField演示");
    }
    protected void startApp() {
	    mainForm.append(
                    new TextField("密码输入", "", 15, TextField.PASSWORD));
            mainForm.append(
	            new TextField("不可改变", "", 15, TextField.UNEDITABLE));
            mainForm.append(
	            new TextField("敏感数据", "", 15, TextField.SENSITIVE));
            mainForm.append(
	            new TextField("禁止联想", "", 15, TextField.NON_PREDICTIVE));
            mainForm.append(
	            new TextField("单词大写", "", 15, TextField.INITIAL_CAPS_WORD));
            mainForm.append(
	            new TextField("句子大写", "", 15, TextField.INITIAL_CAPS_SENTENCE));
	    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() {
    }
}