Thnx Kaj, well it is not really an app. I am exploring Android and Java, coming from an AS3 backgound. I havent even begun to look inot threads. But to answer your question. The app is just drawing dots to the canvas and one button is moving them all x+=1. I wanted to find out how to deal with this in Android. 1. use an intent that all the newly created dots are listenening to. 2. use a model and register this to listen to an intent. When it responds, it goes through the dots and updates them.
Jiri Kaj Bjurman wrote: > You haven't told us how many dots that you have, but I do think it > sounds like an odd design. What kind of application is it? How often > are they moved? How many dots do you have? What do they represent? > > I might of course be wrong here, but this sounds a bit like a common > problem that I often see in people who are starting with game > programming and is using e.g. one thread per "bullet" or what ever > they have that is moving. > > > On 11 Aug, 20:10, Jiri <[email protected]> wrote: >> Thanx Yusuf, >> >> your advice is right, i should optimise later. I have to admit i am just >> started exploring Java and the android API, so hence the sloppyness. >> >> The main point is, that being so new, i have to post these kind of >> questions to take away some insecurity on choices i make. If I >> understand your point correctly, it is not bad practice what i did. I >> just need to optimize... >> >> Using a dotmanager, isnt it more expensive to go through all the dots an >> update them. I can imagine by using the architecture as is and not >> implement another structure, this would be faster. >> >> Any ideas on that? >> >> Jiri >> >> >> >> Yusuf T. Mobile wrote: >>> Code first for simplicity then optimize if/as needed. That being said >>> (well, more like pontificated, sorry), a simpler design would be to >>> aggregate all your dots into a DotManager. This would listen and draw >>> all the dots as needed. Aggregation works if all the dots are similar >>> enough that their code can be centralized, and if I understand your >>> problem correctly (all dots listen for the same event and then they >>> all move), my brilliant and royalty-free design would be appropriate. >>> Yusuf Saib >>> Android >>> ·T· · ·Mobile· stick together >>> The views, opinions and statements in this email are those of the >>> author solely in their individual capacity, and do not necessarily >>> represent those of T-Mobile USA, Inc. >>> On Aug 11, 9:13 am, "[email protected]" >>> <[email protected]> wrote: >>>> I was wondering if the following is considered good practice. >>>> I am creating mulitple Dot instance. A Dot instance is a value object >>>> containing x,y, color, diameter fields. >>>> I draw each created Dot to a view: >>>> <code> >>>> canvas.drawCircle( dot.getX(),dot.getY(),dot.getDiameter >>>> (),paint); >>>> </code> >>>> Now i want all the Dots to listen to a certain event, lets say that i >>>> want to click a button and move all the Dots. >>>> What i do is in the Dot constructor i add this code: >>>> <code> >>>> IntentFilter intentFilter = new IntentFilter >>>> ("org.dadata.demo.SEND_TO_REACTOR"); >>>> Appcontext.registerReceiver(this, intentFilter); >>>> ....... >>>> @Override >>>> public void onReceive(Context context, Intent intent) { >>>> this.x += 5; >>>> } >>>> </code> >>>> Then from my button i send the intent : >>>> <code> >>>> intent.setAction("org.dadata.demo.SEND_TO_REACTOR"); >>>> getApplicationContext().sendBroadcast(intent); >>>> View.invalidate(); >>>> </code> >>>> I am wondering if someone could give me some feedback on this. Is it >>>> expensive for instance, and are there better ways to achive the same. >>>> Thank you, >>>> Jiri > > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~----------~----~----~----~------~----~------~--~---
