分析MIDP的高级事件处理机制 - 编程入门网
作者 佚名技术
来源 NET编程
浏览
发布时间 2012-06-18
| extField;
import javax.microedition.midlet.MIDlet;
public class MainUI extends Form implements CommandListener, ItemStateListener
{
private HighLevelMIDlet midlet;
private TextField inputField;
private ChoiceGroup choice;
private TextField inputField2;
private int index;
public static final Command cmd = new Command("Display", Command.ITEM, 2);
public MainUI(HighLevelMIDlet midlet)
{
super("form");
this.midlet = midlet;
init();
}
public void init()
{
inputField = new TextField("Input", null, 25, TextField.ANY);
inputField2 = new TextField("Input2", null, 25, TextField.ANY);
choice = new ChoiceGroup("click", Choice.MULTIPLE);
choice.append("Another", null);
this.append(inputField);
this.append(choice);
this.addCommand(cmd);
this.setCommandListener(this);
this.setItemStateListener(this);
}
public void commandAction(Command arg0, Displayable arg1)
{
if(arg0 == cmd)
{
String input = inputField.getString();
System.out.println(input);
midlet.getDisplayUI().setInput(input);
midlet.getDisplay().setCurrent(midlet.getDisplayUI());
}
}
public void itemStateChanged(Item arg0)
{
if(arg0 == choice)
{
if(choice.isSelected(0) == true)
{
index = this.append(inputField2);
}
else
{
this.delete(index);
}
}
}
}
import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.CommandListener;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.Form;
import javax.microedition.lcdui.StringItem;
public class DisplayUI extends Form implements CommandListener
{
private HighLevelMIDlet midlet;
private StringItem displayItem;
private Displayable backUI;
public static final Command backCommand = new Command("Back", Command.BACK,
2);
public DisplayUI(HighLevelMIDlet midlet,Displayable backUI)
{
super("Display");
this.midlet = midlet;
this.backUI = backUI;
init();
this.addCommand(backCommand);
this.setCommandListener(this);
}
private void init()
{
displayItem = new StringItem("you input", null);
this.append(displayItem);
}
public void setInput(String input)
{
displayItem.setText(input);
}
public void commandAction(Command arg0, Displayable arg1)
{
if(arg0 == backCommand)
{
midlet.getDisplay().setCurrent(backUI);
}
}
} |
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