诺基亚表单不显示文本

Question

我只希望诺基亚的文档更有帮助。它对开发人员文档的搜索非常糟糕。

public class UpdateJourney extends Form implements CommandListener, Runnable {
    private LocationProvider myLocation;
    private Criteria myCriteria;
    private Location myCurrentLocation;
    private HomeScreen helloScreen;
    private Command exitCommand;
    private Thread getLocationThread = new Thread(this);;
    public UpdateJourney(HomeScreen helloScreen) {
        super("Taxeeta");
        this.helloScreen = helloScreen;
        getLocationThread.start();
    }

    public void run() {
        myCriteria = new Criteria();
        myCriteria.setHorizontalAccuracy(500);
        try {
            myLocation = LocationProvider.getInstance(myCriteria);
            myCurrentLocation = myLocation.getLocation(60);
        } catch (LocationException e) {
            e.printStackTrace();
            System.out
                    .println("Error : Unable to initialize location provider");
            return;
        } catch (InterruptedException e) {
            e.printStackTrace();
            System.out.println("Error: Waited enough for location to return");
            return;
        }
        System.out.println("Location returned Lat:"
                + myCurrentLocation.getQualifiedCoordinates().getLatitude()
                + " Lng:"
                + myCurrentLocation.getQualifiedCoordinates().getLongitude());
        String helloText = new String("Location returned Lat:"
                + myCurrentLocation.getQualifiedCoordinates().getLatitude()
                + " Lng:"
                + myCurrentLocation.getQualifiedCoordinates().getLongitude());
        super.append(helloText);
        exitCommand = new Command("Location returned Lat:"
                + myCurrentLocation.getQualifiedCoordinates().getLatitude()
                + " Lng:"
                + myCurrentLocation.getQualifiedCoordinates().getLongitude(),
                Command.EXIT, 1);
        addCommand(exitCommand);
        setCommandListener(this);
    }
}

Answer 1

你的意思是不显示这个命令吗?:

System.out.println("Location returned Lat:"
+ myCurrentLocation.getQualifiedCoordinates().getLatitude()
+ " Lng:"
+ myCurrentLocation.getQualifiedCoordinates().getLongitude());

手机屏幕没有显示。相反，它将显示在控制台(IDE/debugging)。

在表单上显示文本。您需要使用如下内容:

form.addComponent(new Label("hi...");

希望能有所帮助。