Just my 2 stotinki -- I see more and more developers using this WRONG
resource acquisition pattern with try...finally:
try
{
acquireResource();
}
finally
{
releaseResource();
}
This is plain wrong. The correct way to obtain a resource and release
it is to acquire it BEFORE the try block, and release it in the
finally block:
acquireResource();
try
{
// do whatever with the resource
}
finally
{
releaseResource();
}
if acquireResource could throw an error, the correct way to handle it
is in an outer try block:
try
{
acquireResource();
try
{
// do whatever with the resource
}
finally
{
releaseResource();
}
}
catch (WhateverException e)
{
}
as opposed to this anti-pattern (again widely used):
Resource r = null;
try
{
r = acquireResource();
// do whatever with the resource
}
finally
{
if (r != null)
{
releaseResource();
}
}
Cheers
On Fri, Apr 10, 2009 at 8:00 PM, mcmc <manni...@gmail.com> wrote:
>
> thank you sooo much, everyone!
> i've been meaning for someone to tell me that since a very long time
> ago, but no one did, so i was stuck!
>
> :)
>
> On Apr 9, 3:30 pm, Dianne Hackborn <hack...@android.com> wrote:
>> If you want to use the standard 2d APIs, don't use OpenGL.
>>
>>
>>
>> On Thu, Apr 9, 2009 at 1:45 PM, mcmc <manni...@gmail.com> wrote:
>>
>> > wow thanks so much for your help. I think you're right! :D
>>
>> > however, now I run into another problem. Do you know how to convert
>> > openGL to simply using the standard android/java 2D APIs?
>>
>> > On Apr 9, 2:31 am, "ellipsoidmob...@googlemail.com"
>> > <ellipsoidmob...@googlemail.com> wrote:
>> > > I hadn't realised you are doing openGL stuff. I've used surfaceview/
>> > > holder in the same was as the lunarlander, but I haven't used openGL
>> > > so I don't know how that works.
>>
>> > > But, at a glance, it looks like you've got a mix of two different
>> > > approaches here - maybe the lockcanvas/unlockcanvasandpost approach is
>> > > not appropriate when using openGL as the openGL code is controlling
>> > > and locking the surface?
>>
>> --
>> Dianne Hackborn
>> Android framework engineer
>> hack...@android.com
>>
>> Note: please don't send private questions to me, as I don't have time to
>> provide private support, and so won't reply to such e-mails. All such
>> questions should be posted on public forums, where I and others can see and
>> answer them.
> >
>
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