j2me学习笔记【2】——利用Display类的isColor()方法获取设备是否支持彩色的信息

利用Display类的isColor()方法获取设备是否支持彩色的信息。

 

package mtk;import javax.microedition.lcdui.Command;import javax.microedition.lcdui.CommandListener;import javax.microedition.lcdui.Display;import javax.microedition.lcdui.Displayable;import javax.microedition.lcdui.TextBox;import javax.microedition.midlet.MIDlet;import javax.microedition.midlet.MIDletStateChangeException;public class CheckColor extends MIDlet implements CommandListener {private Display display;private TextBox textbox;private Command CMD_EXIT=new Command("退出",Command.EXIT,1);public CheckColor() {// TODO Auto-generated constructor stubdisplay=Display.getDisplay(this);String message=null;if(display.isColor()){message="显示颜色";}else{message="颜色不能显示";}textbox=new TextBox("颜色确认",message,17,0);textbox.addCommand(CMD_EXIT);textbox.setCommandListener(this);}protected void destroyApp(boolean arg0) {}protected void pauseApp() {}protected void startApp() throws MIDletStateChangeException {display.setCurrent(textbox);}public void commandAction(Command c, Displayable d) {if(c==CMD_EXIT){destroyApp(false);notifyDestroyed();}}}