Java by API/javax.microedition.lcdui/Form

Form: addCommand(Command cmd)

   <source lang="java">
 

import javax.microedition.lcdui.Alert; import javax.microedition.lcdui.AlertType; import javax.microedition.lcdui.rumand; import javax.microedition.lcdui.rumandListener; import javax.microedition.lcdui.Display; import javax.microedition.lcdui.Displayable; import javax.microedition.lcdui.Form; import javax.microedition.lcdui.StringItem; import javax.microedition.midlet.MIDlet; public class Main extends MIDlet implements CommandListener {

 private Command exitCommand = new Command("Exit", Command.EXIT, 1);
 private Command setLabelCommand = new Command("Label", Command.SCREEN, 1);
 private Command setTextCommand = new Command("Text", Command.SCREEN, 1);
 private Command getLabelTextCommand = new Command("Get", Command.SCREEN, 1);
 private StringItem stringItem1 = new StringItem("Label1", "Content1");
 private StringItem stringItem2 = new StringItem(null, "Content2");
 private Display display = Display.getDisplay(this);
 public Main() {
 }
 public void startApp() {
   Form aForm = new Form("StringItem");
   aForm.append(stringItem1);
   aForm.append(stringItem2);
   aForm.addCommand(exitCommand);
   aForm.addCommand(setLabelCommand);
   aForm.addCommand(setTextCommand);
   aForm.addCommand(getLabelTextCommand);
   aForm.setCommandListener(this);
   display.setCurrent(aForm);
 }
 public void pauseApp() {
 }
 public void destroyApp(boolean unconditional) {
 }
 public void commandAction(Command c, Displayable s) {
   if (c == exitCommand) {
     destroyApp(false);
     notifyDestroyed();
   }
   if (c == setLabelCommand)
     stringItem1.setLabel("new label");
   if (c == setTextCommand)
     stringItem2.setText("new text");
   if (c == getLabelTextCommand) {
     Alert alert = new Alert("Info", stringItem1.getLabel() + ":" + stringItem1.getText(), null,
         AlertType.INFO);
     alert.setTimeout(5000);
     display.setCurrent(alert);
   }
 }

}

 </source>
   
  
 
  

Form: append(Item item)

   <source lang="java">
 

import javax.microedition.lcdui.Display; import javax.microedition.lcdui.Form; import javax.microedition.lcdui.TextField; import javax.microedition.midlet.MIDlet; public class Main extends MIDlet {

 protected Display display;
 protected boolean started;
 protected void startApp() {
   if (!started) {
     display = Display.getDisplay(this);
     Form form = new Form("Item Layout");
     form.append("line");
     form.append(new TextField("Name", "J. Doe", 32, TextField.ANY));
     form.append("Address");
     form.append(new TextField(null, null, 32, TextField.ANY));
     display.setCurrent(form);
     started = true;
   }
 }
 protected void pauseApp() {
 }
 protected void destroyApp(boolean unconditional) {
 }

}

 </source>
   
  
 
  

Form: setItemStateListener(ItemStateListener iListener)

   <source lang="java">
 

import javax.microedition.lcdui.Display; import javax.microedition.lcdui.Form; import javax.microedition.lcdui.Gauge; import javax.microedition.lcdui.Item; import javax.microedition.lcdui.ItemStateListener; import javax.microedition.lcdui.StringItem; import javax.microedition.midlet.MIDlet; public class Main extends MIDlet implements ItemStateListener {

 private Gauge mGauge;
 private StringItem mStringItem;
 public Main() {
   int initialValue = 5;
   mGauge = new Gauge("GaugeTitle", true, 10, initialValue);
   mStringItem = new StringItem(null, "[value]");
   itemStateChanged(mGauge);
 }
 public void itemStateChanged(Item item) {
   if (item == mGauge)
     mStringItem.setText("Value = " + mGauge.getValue());
 }
 public void startApp() {
   Form form = new Form("GaugeTracker");
   form.append(mGauge);
   form.append(mStringItem);
   form.setItemStateListener(this);
   Display.getDisplay(this).setCurrent(form);
 }
 public void pauseApp() {
 }
 public void destroyApp(boolean unconditional) {
 }

}

 </source>
   
  
 
  

new Form(String value)

   <source lang="java">
 

import javax.microedition.lcdui.Display; import javax.microedition.lcdui.Form; import javax.microedition.lcdui.TextField; import javax.microedition.midlet.MIDlet; public class Main extends MIDlet {

 protected Display display;
 protected boolean started;
 protected void startApp() {
   if (!started) {
     display = Display.getDisplay(this);
     Form form = new Form("Item Layout");
     form.append("line");
     form.append(new TextField("Name", "J. Doe", 32, TextField.ANY));
     form.append("Address");
     form.append(new TextField(null, null, 32, TextField.ANY));
     display.setCurrent(form);
     started = true;
   }
 }
 protected void pauseApp() {
 }
 protected void destroyApp(boolean unconditional) {
 }

}

 </source>