Two alerts : Alert « J2ME « Java Tutorial

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Java Tutorial » J2ME » Alert 
31. 14. 1. Two alerts
Two alerts
import javax.microedition.lcdui.Alert;
import javax.microedition.lcdui.AlertType;
import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.CommandListener;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.TextBox;
import javax.microedition.lcdui.TextField;
import javax.microedition.midlet.MIDlet;

public class J2METwoAlerts extends MIDlet implements CommandListener {
  private Display mDisplay;

  private TextBox mTextBox= new TextBox("TwoAlerts"""32, TextField.ANY);

  private Alert mTimedAlert = new Alert("Network error""error occurred", null, AlertType.INFO);

  private Alert mModalAlert= new Alert("About TwoAlerts","Alerts.", null, AlertType.INFO);

  private Command mAboutCommand, mGoCommand, mExitCommand;

  public J2METwoAlerts() {
    mAboutCommand = new Command("About", Command.SCREEN, 1);
    mGoCommand = new Command("Go", Command.SCREEN, 1);
    mExitCommand = new Command("Exit", Command.EXIT, 2);

    mTextBox.addCommand(mAboutCommand);
    mTextBox.addCommand(mGoCommand);
    mTextBox.addCommand(mExitCommand);
    mTextBox.setCommandListener(this);

    mModalAlert.setTimeout(Alert.FOREVER);
  }

  public void startApp() {
    mDisplay = Display.getDisplay(this);

    mDisplay.setCurrent(mTextBox);
  }

  public void pauseApp() {
  }

  public void destroyApp(boolean unconditional) {
  }

  public void commandAction(Command c, Displayable s) {
    if (c == mAboutCommand)
      mDisplay.setCurrent(mModalAlert);
    else if (c == mGoCommand)
      mDisplay.setCurrent(mTimedAlert, mTextBox);
    else if (c == mExitCommand)
      notifyDestroyed();
  }
}
31. 14. Alert
31. 14. 1. Two alertsTwo alerts
31. 14. 2. Alarm alert, confirmation alert, error alert, info alert, warning alertAlarm alert, confirmation alert, error alert, info alert, warning alert
31. 14. 3. Set alert time outSet alert time out
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