[Ubuntu-ma] (sans objet)

[Nordin]

No problem, I'm glad I can help you.
You can ask me anytime, but than I assume you tried out your code before 
or there is something you just don't understand, no matter how often you 
read an article about it. (I mean I don't like questions like how to add 
two variables for example).

So don't hesitate to post a question ;-)



On 9-8-2010 16:13, H. Mohammed Amine wrote:
> Dude, you're great ! thnx a lot ! i hope you would answer some of my
> questions next time cuz i'm a kind of n00bs :s
>
> On Mon, Aug 9, 2010 at 1:55 PM, Nordin<bouchtaoui at gmail.com>  wrote:
>
>    
>> On 9-8-2010 15:27, H. Mohammed Amine wrote:
>>      
>>> great ! and what about using the threads ?
>>>
>>>        
>> Don't use threads for now, it's a horrible thing. Threads make things
>> more complicated than needed. It depends on what you want.
>> As far as my experience goes (on Windows with C++ and C#), you can only
>> access the user interface components like buttons and text fields from
>> the main thread. That's the thread your application is started from. If
>> you create another thread to do some calculation, than you can't just
>> access the graphic object to do the drawings. I'm sure there are tricks
>> to achieve that, but than you'll end up with lots of readings and
>> experimenting to have good control over it.
>>
>> Threads are useful if you have to wait a long time for a connection or
>> data (from a serial port or from a tcp connection), in that case,
>> instead of waiting all the time (which makes your UI not responding),
>> it's better to do that in a separate thread and let the thread do the
>> waiting. If something happens in that thread, you can inform the main
>> thread with a message, signal or whatever construction they use in Java.
>> In windows (using Visual C++) we have something like PostMessage()
>> function call, to send a message from one thread to another. In C# I
>> don't remember how to do that, but it's an ugly way to do that.
>>
>> So my advise is, don't use it for something like an animation, timers
>> are much better and very simple to use comparing to threads.
>> If you want to play with threads, we can do that next time together ;-).
>> I want to write a simple chat app for Android (just for experimenting),
>> we will use a thread for that (socket connection handling). If you can't
>> wait, there is enough opensource code that works with threads in Java :).
>>
>>
>>      
>>> On Mon, Aug 9, 2010 at 1:24 PM, Nordin<bouchtaoui at gmail.com>   wrote:
>>>
>>>
>>>        
>>>> No problem,
>>>>
>>>> This construction is used a lot, because that keeps the user interface
>>>> responsive.
>>>> Imagine your animation is repeating forever in a loop, you want to be
>>>> able to stop with a stop button.
>>>> But because you're app is caught in a loop, you're unable to press stop,
>>>> this makes your app is not responding and eats a lot of CPU resource.
>>>> I don't know if you've seen a windows app freezing, well, that's the
>>>> same result you'll get with your application.
>>>>
>>>> Using a timer your app can respond on a stop button and everything is
>>>> fine ;-)
>>>> I hope you understand :)
>>>>
>>>>
>>>>
>>>> On 9-8-2010 14:48, H. Mohammed Amine wrote:
>>>>
>>>>          
>>>>> nice idea ! thnx :) i'll try this
>>>>>
>>>>> On Mon, Aug 9, 2010 at 12:16 PM, Nordin<bouchtaoui at gmail.com>    wrote:
>>>>>
>>>>>
>>>>>
>>>>>            
>>>>>> On 9-8-2010 14:05, H. Mohammed Amine wrote:
>>>>>>
>>>>>>
>>>>>>              
>>>>>>> No, No Compil Error i'm okeh till now !! i'm looking for how to anime
>>>>>>>
>>>>>>>                
>>>> it
>>>>
>>>>          
>>>>>>>                
>>>>>> ! i
>>>>>>
>>>>>>
>>>>>>              
>>>>>>> think something called timer
>>>>>>> thnx :)
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>                
>>>>>> Yes, a timer would be the most logical way ;-)
>>>>>> I think you first try it by every time pushing on a button (manually)
>>>>>> and see if your animation does what it should do.
>>>>>> When everything goes fine, you can replace your button by a timer,
>>>>>>              
>> that
>>      
>>>>>> triggers every 200 ms. In the timer handler you do the calculation and
>>>>>> than update your drawings.
>>>>>>
>>>>>>
>>>>>>
>>>>>>              
>>>>>>> On Fri, Aug 6, 2010 at 3:57 PM, Gmail account<allali.ayoub at gmail.com
>>>>>>> wrote:
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>                
>>>>>>>> @H Mohammed Amine ,*
>>>>>>>> *what is wrong with your code ?
>>>>>>>> did you have any compilation error ?
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> AYYOUB Allali
>>>>>>>> JEE junior developer
>>>>>>>> +(212) 644 67 79 24
>>>>>>>>
>>>>>>>>
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>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>                  
>>>>>>>
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>>>>>>
>>>>>>              
>>>>>
>>>>>
>>>>>            
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>>>>          
>>>
>>>
>>>        
>>
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