How to change the color of the border of TextBoxField OnFocus

Hi all

I use the following code to the TextBoxField:

http://NA.BlackBerry.com/eng/devjournals/resources/journals/jul_2005/creating_textbox_field.jsp

now, I try to change the color of border TextBoxField when it focused. But could not able to get.

need help on this.

Thank you

amsiddh wrote:

Hi arkadyz,

I really appreciate how you explained and thanks for sharing the code snippet. I tried your code snippet of change of border.

I have a few problems at the border change on focus, but I could not able to see the cursor in the text box and cannot able to type something in the text box or can it be get typed but not painted on the screen. If I remove this methods I see the cursor and the type of keywords but not border change.

I added these two methods

protected void onFocus(int direction) {
   if(direction == 0 ||  direction == 1 || direction == -1) {
       myBorderColor = Color.BLUE;
    }
}

protected void onUnfocus() {
     myBorderColor = Color.BLACK;
}

I think it has to do with a painting of editField method. I have tried to understand but not succeeded. can u please help

Where did you add these methods?  The field only focusable you have is editField, if you need it.  Furthermore, I already mentioned that you need to invalidate() your TextBoxField together for it to be repainted.  Thus, the creation of editField should look like this:

    EditField editField = new EditField("", "", EditField.DEFAULT_MAXCHARS, FOCUSABLE) {
        protected void onFocus(int direction) {
            myBorderColor = Color.BLUE;
            TextBoxField.this.invalidate();
        }

        protected void onUnfocus() {
            myBorderColor = Color.BLACK;
            TextBoxField.this.invalidate();
        }
    };

Your myBorderColor must be a member of private int TextBoxField himself.

Edit: first, add super.onFocus (branch) and super.onUnfocus () as the first lines of the corresponding methods.  Secondly, I just found out that onUnfocus() is never called!  You're talking about BlackBerry framework!  I tested it under Simulator (9000 "BOLD"), but things GUI is usually the same on the actual device.

What is interesting, is that I have used these methods several times and they always work.  Strange...  When I have the time to study more, I'll know what goes wrong and post the results here.

Tags: BlackBerry Developers

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