在canvas类里调用textbox

代码

/**

* TextBox´´s instance

*/

PRivate TextBox inputName = null;

/**

* 「cancel」Command

* command in TextBox

*/

private Command cCancel = new Command("cancel", Command.CANCEL, 1);

/**

* 「ok」Command

* command in TextBox

*/

private Command cOK = new Command("ok", Command.OK, 1);

/**

* 保存在TextBox中已输入的值

*/

private String name = "";

/**

* 调用TextBox

* The method disposes the key pressing action

* the code of pressed key

* @param key

*/

public void keyPressed(int key) {

if (key == Canvas.FIRE) {

inputName = new TextBox("请输入姓名", name, 8, TextField.ANY);

inputName.addCommand(cCancel);

inputName.addCommand(cOK);

inputName.setCommandListener(this);

Display.getDisplay(BustRoyal.instance).setCurrent(inputName);

//其中BustRoyal.instance为MIDlet的实例

}

}

/**

* TextBox中的command的处理

*/

public void commandAction(Command c, Displayable d) {

if (c == cCancel) {

Display.getDisplay(BustRoyal.instance).setCurrent(this);

} else if (c == cOK) {

name = inputName.getString().trim();

Display.getDisplay(BustRoyal.instance).setCurrent(this);

}

}