【Java开源代码栏目提醒】:以下是网学会员为您推荐的Java开源代码-TextExample.java,希望本篇文章对您学习有所帮助。
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
public class TextExample extends MIDlet
{
private Display display;
private MyCanvas canvas;
public TextExample ()
{
//获取MIDlet的Display对象实例
display = Display.getDisplay(this);
//声明Canvas屏幕对象
canvas = new MyCanvas (this);
}
protected void startApp()
{
display.setCurrent(canvas);
}
protected void pauseApp()
{
}
protected void destroyApp( boolean unconditional )
{
}
public void exitMIDlet()
{
destroyApp(true);
notifyDestroyed();
}
}
class MyCanvas extends Canvas implements CommandListener
{
private Command exit;
private TextExample textExample;
public MyCanvas (TextExample textExample)
{
this. textExample = textExample;
exit = new Command("Exit", Command.EXIT, 1);
addCommand(exit);
setCommandListener(this);
}
protected void paint(Graphics graphics)
{
//设置画笔颜色为白色
graphics.setColor(255,255,255);
//填充屏幕
graphics.fillRect(0, 0, getWidth(), getHeight());
//设置画笔颜色为红色
graphics.setColor(255,0,0);
//设置字体格式
graphics.setFont(Font.getFont(Font.FACE_PROPORTIONAL,
Font.STYLE_BOLD, Font.SIZE_LARGE));
//绘制字符串
graphics.drawString("Hello World.", 50, 10, Graphics.HCENTER|Graphics.BASELINE);
}
public void commandAction(Command command, Displayable displayable)
{
if (command == exit)
{
textExample.exitMIDlet();
}
}
}
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