[android-developers] Re: remarkable slowness
It was in a loop. I'm using Stringbuilder now, and I got it down from
38 seconds to about 1.
On Sep 4, 7:10 pm, Nick Risaro <nris...@gmail.com> wrote:
> On Sun, Sep 4, 2011 at 9:02 PM, bob <b...@coolgroups.com> wrote:
> > I am seeing some remarkable slowness in code like this:
>
> > String html = "<html><head><style
> > type=\"text/css\">tr:nth-child(odd)
> > { background-color: rgba(0, 0, 0, 1.0); }"
> > + " tr:nth-child(even) { background-color:
> > rgba(0, 0, 0, 1.0); }
> > td { padding: 4px; font-size: 13px; } "
> > + "body { color: white; font-family:
> > \"Helvetica Neue\"; padding:
> > 0; border: 0; margin: 0;"
> > + "}" +
>
> > "</style></head><body bgcolor=0><table
> > width=320 border=0>";
>
> > String dotline = "<tr><td colspan=4 align=center><font
> > color=#aed136
> > size=3px><b>· · · · · ·
> > · · · · · · ·
> > · · · · · · ·
> > · · · · · · ·
> > · · · ·</td></tr>";
> > html += dotline;
> > html += "<tr><td/><td align=center><font
> > color=#aed136><b>TEAMS</
> > td><td align=center><font color=#aed136><b>TIME</td></tr>\n";
>
> > The only thing I can think of is that I ought to use a StringBuffer to
> > build the HTML. Can a mistake like that really cause so much
> > slowness?
>
> Each time you concatenate two strings a third one is created to hold the
> result. Strings are inmutables and expensive. Try with the
> StringBuffer/StringBuilder and check the results. Your code will be faster
> and more legible.
>
>
>
>
>
>
>
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posted by twitter @ 5:57 PM
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