I'm not sure what you mean by framerate... we are talking about http requests, right? They shouldn't be tied to a frame rate. You really need to think about the repercussions of running on a mobile device:
- When on a EDGE network, it can easily take more than a second just to set up a network connection. - Opening a network connection puts the device in to a high power state, and it will remain in that state for at least 10 seconds as it expects more network traffic. This will drain the battery very quickly. - Even if you get the network connection up in time, it is doubtful you will get all of your data back within 1 second. As a target, I would recommend trying to do a network connection no more than once a minute (and this only when your app is in the foreground; when in the background you want to be much more frugal than that). In that connection, you can retrieve all of the information around the current area that you might be interested in. That is, batch your requests so that you can get a lot of data in a small number of batches, to help mitigate the impact of network connection delays and bringing the device in to a high power state by performing network activity. Another option you can use is to keep a persistent connection open while your app is in the foreground, which the server and client talk back and forth on as needed. When there is no traffic on the connection the device can go into a lower power state (though there is still the delay so you still want to batch interactions as much as possible), but this avoids the initial setup overhead. I'm not sure how useful this is for doing repeated requests, except for getting rid of the htttp and network setup overhead, but it can be very useful when a server is pushing data to an app on the server's schedule. On Sep 3, 10:56 am, barbapapaz <[EMAIL PROTECTED]> wrote: > Hello it's for a map application you can see a video > herehttp://www.youtube.com/watch?v=3cHyRdLi1D8 > > What are rational framerate for this type of application? For example > when you use google map or google earth what is methodology? > > Thanks for your interest > > On 3 sep, 18:34, hackbod <[EMAIL PROTECTED]> wrote: > > > You are making an http request every second? Though I don't know what > > you are doing, that seems way too frequent to me. This will be very > > hard on the battery, effectively causing the device to keep its radio > > turned on in a high power state for the entire time you are running. > > > On Sep 3, 2:20 am, barbapapaz <[EMAIL PROTECTED]> wrote: > > > > Hello > > > > I have question about efficiency in loop. In my app I have loop called > > > with sceduler each second. In this loop I launch request with > > > httpclient, I must cronstruct an entity with MultipartEntity. > > > > this procedure explain here (http://groups.google.com/group/android- > > > developers/browse_thread/thread/e4230ed22c196772/1284daa5723acd0c? > > > lnk=gst&q=MultipartEntity#1284daa5723acd0c) > > > > ContentBody[] parts = { new > > > StringBody(Float.toString(latitudeMin)), > > > > > > new StringBody(Float.toString(latitudeMax)), > > > > > > new StringBody(Float.toString(longitudeMin)), > > > > > > new StringBody(Float.toString(longitudeMax)), > > > > > > new StringBody(dateMin), > > > > > > new StringBody(dateMax), > > > > > > new StringBody(noteMin), > > > > > > new StringBody(categories) > > > }; > > > > MultipartEntity getMessagesRequestContent = new > > > MultipartEntity(); > > > getMessagesRequestContent.addPart("latitudeMin", > > > parts[0]); > > > getMessagesRequestContent.addPart("latitudeMax", > > > parts[1]); > > > getMessagesRequestContent.addPart("longitudeMin", > > > parts[2]); > > > getMessagesRequestContent.addPart("longitudeMax", > > > parts[3]); > > > getMessagesRequestContent.addPart("dateMin", > > > parts[4]); > > > getMessagesRequestContent.addPart("dateMax", > > > parts[5]); > > > getMessagesRequestContent.addPart("noteMin", > > > parts[6]); > > > getMessagesRequestContent.addPart("categories", > > > parts[7]); > > > > In this code there are lot of "new" and the garbage collector is often > > > called! > > > MultipartEntity and StringBody objects aren't clear or erase function, > > > I must called new each loop! > > > > Do you think that is no problem? > > > Do you think that I musn't use this new (do you have solution)? > > > > MultipartEntity and StringBody objects are in an opensource library > > > (code > > > herehttp://hc.apache.org/httpcomponents-client/httpmime/xref/index.html). > > > Do you think that I must write clear funtion to don't called new > > > function (and recompile)? > > > > Thanks --~--~---------~--~----~------------~-------~--~----~ 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] Announcing the new Android 0.9 SDK beta! http://android-developers.blogspot.com/2008/08/announcing-beta-release-of-android-sdk.html For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~----------~----~----~----~------~----~------~--~---
