Get value from TextField : TextBox « J2ME « Java Tutorial





Get value from TextField
import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.CommandListener;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.Form;
import javax.microedition.lcdui.TextField;
import javax.microedition.midlet.MIDlet;

public class J2METextFieldCapture extends MIDlet implements CommandListener {
  private Display display;

  private Form form = new Form("Sign In Please");

  private Command submit = new Command("Submit", Command.SCREEN, 1);

  private Command exit = new Command("Exit", Command.EXIT, 1);

  private TextField textfield = new TextField("First Name:", "", 30, TextField.ANY);

  public J2METextFieldCapture() {
    display = Display.getDisplay(this);
    form.addCommand(exit);
    form.addCommand(submit);
    form.append(textfield);
    form.setCommandListener(this);
  }

  public void startApp() {
    display.setCurrent(form);
  }

  public void pauseApp() {
  }

  public void destroyApp(boolean unconditional) {
  }

  public void commandAction(Command command, Displayable displayable) {
    if (command == submit) {
      textfield.setString("Hello, " + textfield.getString());
      form.removeCommand(submit);
    } else if (command == exit) {
      destroyApp(false);
      notifyDestroyed();
    }
  }
}










31.5.TextBox
31.5.1.Add TextBox to a formAdd TextBox to a form
31.5.2.TextBox which accepts any inputTextBox which accepts any input
31.5.3.Phonenumber TextFieldPhonenumber TextField
31.5.4.Numeric TextFieldNumeric TextField
31.5.5.TextField.PASSWORD | TextField.NUMERIC)TextField.PASSWORD | TextField.NUMERIC)
31.5.6.TextField.PASSWORDTextField.PASSWORD
31.5.7.Check the input value of a password fieldCheck the input value of a password field
31.5.8.TextBox with size
31.5.9.Text AnchorText Anchor
31.5.10.Display text in TextBoxDisplay text in TextBox
31.5.11.Get value from TextFieldGet value from TextField
31.5.12.Remove command from TextBoxRemove command from TextBox