Android Question Real Time Data Pushing

[tufanv]

Hello

I have a question. Some finance apps provides live prices of market data like stock exchange , currency etc. The app updates this every second and the prices are updated live. I am sure that , they do not download a file from the internet and update it every second so how do they do it =? Generally these type of data is provided with an xml feed. So can you point me to a correct place where i can find info on live updating of data through my app ?

TY

 

[DonManfred]

If there is no api to use then all you can do is download the xml and show the info.

 

[tufanv]

If there is no api to use then all you can do is download the xml and show the info.

So,

Downlading every 5 seconds the xml for example would donwload how many kbs or mbs to user approx ? and if there was an api from the feeder how could i achive this ?

 

[DonManfred]

for example would donwload how many kbs or mbs to user approx

YOU tell me! I dont know the size of the xml. You know the size, you know how often you´ll download. Take a calculator and cound the right KBs

 

[tufanv]

YOU tell me! I dont know the size of the xml. You know the size, you know how often you´ll download. Take a calculator and cound the right KBs

I also dont know because i have to purchase the xml feed package of a data provider first =)
Canyou tell the difference of updating the data every 5 seconds for example and using an api ? How do i use an api to update data every second without donloading the feed ?

 

[DonManfred]

Maybe their api provide a way they send you the new data. With push notification for ex.
I don´t know how it would be with their api. I dont know the api.