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写了一段程序,但是,总是不能实现想要的效果,请大家指点一下(本人是刚刚开始学习j2me的)
想要实现的效果:
开始是一个图片canvas界面,点击fire健后,跳到textbox输入框,让用户输入自己的信息,之后,取得用户输入返回canvas低级界面,画在需要显示的地方
代码为:
import javax.microedition.midlet.MIDlet;
import javax.microedition.midlet.MIDletStateChangeException;
import javax.microedition.lcdui.*;
public class main extends MIDlet implements CommandListener{
public Image search_bg = null;
public Image search_content = null;
public Display m_display;
protected TextBox textBox;
Command commit;
boolean show_pic=true;
drawbg m_bg;
public main() {
try
{
search_bg = Image.createImage("/pic/search/search_bg.png");
search_content = Image.createImage("/pic/search/search_banner.png");
}catch(Exception e)
{
//装载图片失败程序需要退出
}
textBox = new TextBox("搜索内容", "nihao",
53, TextField.ANY);
commit = new Command("提交",Command.SCREEN,1);
m_bg = new drawbg(this);
m_display = Display.getDisplay(this);
setDisplayable(m_bg);
}
public void setDisplayable(Displayable displayable)
{
m_display.setCurrent(displayable);
}
protected void destroyApp(boolean arg0) throws MIDletStateChangeException {
// TODO Auto-generated method stub
}
protected void pauseApp() {
// TODO Auto-generated method stub
}
protected void startApp() throws MIDletStateChangeException {
// TODO Auto-generated method stub
}
public void search_interface()
{
// 将这个TextBox在当前屏幕上显示
m_display = Display.getDisplay(this);
textBox.addCommand(commit);
textBox.setCommandListener(this);
setDisplayable(textBox);
}
public void commandAction(Command c, Displayable s) {
TextBox tmp = (TextBox)s ;
System.out.println(tmp.getString()) ;
}
}
第二个类为drawbg :
import javax.microedition.lcdui.Canvas;
import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.CommandListener;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.Graphics;
import javax.microedition.lcdui.TextBox;
import javax.microedition.lcdui.TextField;
public class drawbg extends Canvas {
main m_pmidlet;
int bg_width = 0;
int bg_hight = 0;
public drawbg(main pMIDlet)
{
m_pmidlet = pMIDlet;
bg_width = m_pmidlet.search_bg.getWidth();
bg_hight = m_pmidlet.search_bg.getHeight();
}
public void paint(Graphics g)
{
g.drawImage(m_pmidlet.search_bg, 0, 0, Graphics.TOP ¦Graphics.LEFT);
g.drawImage(m_pmidlet.search_content, bg_width/10, bg_hight/3, Graphics.TOP ¦Graphics.LEFT);
}
protected void KeyPressed(int key)
{
switch(key)
{
case -6:
m_pmidlet.search_interface();
break;
default:
//back();
break;
}
}
}
请大家帮我看看吧
在线等 |
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