How to coloriate differently even rows and odd rows of a List in LWUIT? - lwuit

Question

There is a List in a LWUIT application. I want to make odd rows and even rows to be of different colors. How to achieve that ?

Answer 1

You can set two differents UIIDs to the rows. Setting this UIID you can modify selectively the colors of your rows.
EDIT
Ok this will be more difficult.
You need to make a Render and set it in your List with List.setRender(Render r).
The ´Render´ class will extend from ListCellRender. In this class you can set UIID to the Render, setting its Selected or Unselected styles.
See this example. #Shai Almog could have more info for your problem.
http://www.lwuit.com/2008/07/lwuit-list-renderer-by-chen-fishbein.html

Answer 2

What you need is the Generic List Cell Renderer, you will probably have to create the styles in code, or set the UIID from the resource editor.
List list = new List(createGenericListCellRendererModelData());
list.setRenderer(new GenericListCellRenderer(createGenericRendererContainer(), createGenericRendererContainer()));
private Container createGenericRendererContainer() {
Container c = new Container(new BorderLayout());
c.setUIID("ListRenderer");
Label name = new Label();
name.setFocusable(true);
name.setName("Name");
c.addComponent(BorderLayout.CENTER, name);
Label surname = new Label();
surname.setFocusable(true);
surname.setName("Surname");
c.addComponent(BorderLayout.SOUTH, surname);
CheckBox selected = new CheckBox();
selected.setName("Selected");
selected.setFocusable(true);
c.addComponent(BorderLayout.WEST, selected);
return c;
}
private Hashtable[] createGenericListCellRendererModelData() {
Hashtable[] data = new Hashtable[5];
data[0] = new Hashtable();
data[0].put("Name", "Shai");
data[0].put("Surname", "Almog");
data[0].put("Selected", Boolean.TRUE);
data[1] = new Hashtable();
data[1].put("Name", "Chen");
data[1].put("Surname", "Fishbein");
data[1].put("Selected", Boolean.TRUE);
data[2] = new Hashtable();
data[2].put("Name", "Ofir");
data[2].put("Surname", "Leitner");
data[3] = new Hashtable();
data[3].put("Name", "Yaniv");
data[3].put("Surname", "Vakarat");
data[4] = new Hashtable();
data[4].put("Name", "Meirav");
data[4].put("Surname", "Nachmanovitch");
return data;
}
Full details here : http://lwuit.blogspot.com/2011/03/list-rendering-easy-way-generic-list.html (code gotten from this link).