?? navigator.java
字號:
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
import java.util.* ;
public class Navigator
{
final public static int MAIN_SCREEN = 1 ;
final public static int USERDATA_SCREEN = 2 ;
final public static int UPDATEUSERDATA_SCREEN = 3 ;
public static MIDlet midlet ;
public static Display display ;
public static int current ;
public static void show(Object obj)
{
switch(current)
{
case MAIN_SCREEN :
display.setCurrent(MainScreen.getInstance()) ;
break ;
case USERDATA_SCREEN :
display.setCurrent(new UserDataScreen((Vector)obj)) ;
break ;
case UPDATEUSERDATA_SCREEN :
display.setCurrent(UpdateUserDataScreen.getInstance()) ;
break ;
}
}
public static void flow(String cmd)
{
switch(current)
{
case MAIN_SCREEN :
if(cmd.equals("離開"))
{
midlet.notifyDestroyed() ;
}else if(cmd.equals("增加數據"))
{
current = UPDATEUSERDATA_SCREEN ;
show(null) ;
}
break ;
case USERDATA_SCREEN :
if(cmd.equals("離開"))
{
midlet.notifyDestroyed() ;
}else if(cmd.equals("回主功能"))
{
current = MAIN_SCREEN ;
show(null) ;
}
break ;
case UPDATEUSERDATA_SCREEN :
if(cmd.equals("回主功能"))
{
current = MAIN_SCREEN ;
show(null) ;
}
break ;
}
}
}
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