Java Development

[andemartini]

On phones that don't have a touch screen, I'm having trouble with scrolling.  I have a Main screen that contains two vertical field managers one immediatly following the other.  Inside both of these managers are a bunch of labels.  I want to be able to scroll down the screen when the labels contain alot of text.   

Main Screen

|-----------------|

|  Inside vert  |

| manager 1  |

|-----------------|

| Inside vert   |

| manager 2  |

|                       |

-----------------

This works on touch screen phones but not with the trackball.  I just can't scroll anywhere with the trackball but I do see the little arrow at the bottom of the screen that indicates you should be able to scroll down.  Any ideas?

[peter_strange]

Tracked will only scroll onto focusable Fields.  So you have to have focusable Fields to do scrolling normally.  Add a NullField between your labels and the trackpad scrolling will start working.  Alternatively, make your labels focusable.

[andemartini]

Thank you for the response Peter.  Adding the null fields allows scrolling, but unfortunately the scrolling is not fine enough.  That is, a single scroll increment will jump too far down.  This happens when a single textfield contains many lines of text.  Is there some kind of scrollable textbox in blackberry?

[andemartini]

And how does the blackberry email client do it?  There is a nice cursor that moves through the text as you scroll.  Is this custom built for that app?

[andemartini]

So I figured out what to do.  Instead of use LabelField, I use an EditField.  Also, to prevent editing I call setEditable(false) on each EditField.

[peter_strange · Accepted solution]

That works, but FYI in this sort of situation I use RichTextField, which is read only by default. 

[andemartini]

Ok, great thank you.