How to create ComboBox in J2ME?

Question

I want to create a function which takes two arguments

1. A String value (name)
2. An array of String objects

The function creates LWUIT Combobox with these two parameters and returns a ComboBox varialble...

I have written following code...

 public void createComboxBox(String recStoreName,String [] values){
    comboBox = new ComboBox(recStoreName, values);
    surveyForm.addComponent(comboBox);

}

Answer 1

   //create a form and set its title
    Form f = new Form("Simple ComboBox");

    //set layout manager for the form
    //f.setLayout(new FlowLayout());

    //set form background colour
    f.getStyle().setBgColor(0xd5fff9);
    .
    .
    .

The first two lines of code are quite self-explanatory and should be familiar to AWT/Swing developers. The third line sets the background color attribute for the form.

The combo box is also instantiated in a similar manner:

    // Create a set of items
    String[] items = { "Red", "Blue", "Green", "Yellow" };

    //create a combobox with String[] items
    ComboBox combobox = new ComboBox(items);

---

Resource

• Using Styles, Themes, and Painters with LWUIT

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Also See

• The Lightweight User Interface Toolkit (LWUIT): An Introduction

Answer 2

Just create the bean class like set the key and value. For example,

public void beanClass {

String value;
String key;

 public beanClass() {
} 
public void setValue(String value) {
this.value = value;
public void getValue() {
return value;
}
public void setValue(String key) {
this.key= key;
public void getKey() {
return key;
}
}

then create the beanClass array on your class and pass the Key's and Value's. then pass the beanClass array to ComboBox .

comboBox.getSelectedItem() returns the beanClass. So you can get the key and value from selected beanClass .