Java by API/javax.microedition.lcdui/AlertType
AlertType.CONFIRMATION
<source lang="java">
import java.io.IOException; 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.Image; import javax.microedition.lcdui.TextBox; import javax.microedition.lcdui.TextField; import javax.microedition.midlet.MIDlet; public class FewAlertsMIDlet extends MIDlet implements CommandListener {
private Command exitCommand = new Command("exit", Command.SCREEN, 1); private Command alarmCommand = new Command("alarm", Command.SCREEN, 2); private Command confirmCommand= new Command("confirm", Command.SCREEN, 2); private Command errorCommand = new Command("error", Command.SCREEN, 2); private Command infoCommand = new Command("info", Command.SCREEN, 2); private Command warningCommand = new Command("warning", Command.SCREEN, 2); private Alert alarmAlert = new Alert("alarm",null,null, AlertType.ALARM); private Alert confirmAlert = new Alert("confirm", null,null, AlertType.CONFIRMATION); private Alert errorAlert = new Alert("error", null, null,AlertType.ERROR);
// private Alert infoAlert = new Alert("info", null,infoImage, AlertType.INFO);
private Alert warningAlert = new Alert("warning",null, null, AlertType.WARNING); private Display display = Display.getDisplay(this); public FewAlertsMIDlet() { } public void startApp() { TextBox main = new TextBox("","",26,TextField.ANY); Image infoImage = null; try { infoImage = Image.createImage("/a.png"); } catch (IOException e) { } alarmAlert.setTimeout(Alert.FOREVER); confirmAlert.setTimeout(3000); errorAlert.setTimeout(3000); // infoAlert.setTimeout(3000); warningAlert.setTimeout(3000); main.addCommand(exitCommand); main.addCommand(alarmCommand); main.addCommand(confirmCommand); main.addCommand(errorCommand); main.addCommand(infoCommand); main.addCommand(warningCommand); main.setCommandListener(this); display.setCurrent(main); } public void pauseApp() { } public void destroyApp(boolean unconditional) { } public void commandAction(Command c, Displayable s) { if (c == exitCommand) { destroyApp(false); notifyDestroyed(); } if (c == alarmCommand) { display.setCurrent(alarmAlert); } if (c == confirmCommand) { display.setCurrent(confirmAlert); } if (c == errorCommand) { display.setCurrent(errorAlert); } // if (c == infoCommand) { // display.setCurrent(infoAlert); // } if (c == warningCommand) { display.setCurrent(warningAlert); } }
}
</source>
AlertType.INFO
<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>
AlertType.WARNING
<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.midlet.MIDlet; import javax.microedition.midlet.MIDletStateChangeException; public class J2MEDisplayAlert extends MIDlet implements CommandListener {
private Display display; private Alert alert; private Form form; private Command exit; private boolean exitFlag; public J2MEDisplayAlert() { exitFlag = false; display = Display.getDisplay(this); exit = new Command("Exit", Command.SCREEN, 1); form = new Form("Throw Exception"); form.addCommand(exit); form.setCommandListener(this); } public void startApp() { display.setCurrent(form); } public void pauseApp() { } public void destroyApp(boolean unconditional) throws MIDletStateChangeException { if (unconditional == false) { throw new MIDletStateChangeException(); } } public void commandAction(Command command, Displayable displayable) { if (command == exit) { try { if (exitFlag == false) { alert = new Alert("Busy", "Please try again.", null, AlertType.WARNING); alert.setTimeout(Alert.FOREVER); display.setCurrent(alert, form); destroyApp(false); } else { destroyApp(true); notifyDestroyed(); } } catch (MIDletStateChangeException exception) { exitFlag = true; } } }
}
</source>