如何将控件从GUI创建的表单传递给codenameONe中的代码创建的表单 [英] How to pass control from GUI created form to code created form in codenameONe

问题描述

我已经使用GUI构建器创建了一个表单，并通过加载Google地图的代码创建了另一个表单。表单中有一个使用GUI Builder创建的按钮，我需要在单击该按钮的同时转到地图。怎么做 ？

I have created a form using GUI builder and another form via code which loads the google map. There is a button in the form which was created by using GUI builder, I need to go to the map while clicking the button. How to do it ? please help.

推荐答案

在按钮上添加一个ActionListener并在StateMachine中生成的方法中调用新表单。

Add an actionListener to your button and call the new form in the method generated in StateMachine.

您的表单应在StateMachine中创建。

Your form should be created in StateMachine.

例如：

protected void onPage2_ButtonAction(Component c, ActionEvent event) {
    Form hi = new GmapForm("Native Maps Test");
    hi.show();
}

Gmap表单类：

public class GmapForm extends Form {

 public GmapForm(String title) {
    t.setTitle(title);
    setLayout(new BorderLayout());
    final MapContainer cnt = new MapContainer();
    addComponent(BorderLayout.CENTER, cnt);
    addCommand(new Command("Move Camera") {
        public void actionPerformed(ActionEvent ev) {
            cnt.setCameraPosition(new Coord(-33.867, 151.206));
        }
    });
    addCommand(new Command("Add Marker") {
        public void actionPerformed(ActionEvent ev) {

            System.out.println("Marker");

            try {
                cnt.setCameraPosition(new Coord(41.889, -87.622));
                cnt.addMarker(EncodedImage.create("/maps-pin.png"), new Coord(41.889, -87.622), "Hi marker", "Optional long description", new ActionListener() {
                    public void actionPerformed(ActionEvent evt) {
                        Dialog.show("Marker Clicked!", "You clicked the marker", "OK", null);
                    }
                });

            } catch(IOException err) {
                // since the image is iin the jar this is unlikely
                err.printStackTrace();
            }

        }
    });
    addCommand(new Command("Add Path") {
        public void actionPerformed(ActionEvent ev) {
            cnt.setCameraPosition(new Coord(-18.142, 178.431));
            cnt.addPath(new Coord(-33.866, 151.195), // Sydney
                new Coord(-18.142, 178.431),  // Fiji
                new Coord(21.291, -157.821),  // Hawaii
                new Coord(37.423, -122.091)  // Mountain View
            );
        }
    });
    addCommand(new Command("Clear All") {
        public void actionPerformed(ActionEvent ev) {
            cnt.clearMapLayers();
        }
    });
    revalidate();
  }

从Gmap类中删除上述代码，然后取消注释 // new StateMachine（ / theme）;

Remove the above code from your Gmap class and Uncomment // new StateMachine("/theme");

这篇关于如何将控件从GUI创建的表单传递给codenameONe中的代码创建的表单的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！