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I am new to Android programming. I am developing and Android App that would capture an image after which it would send the image to a server where it would be modified and then returned back to the phone. My question is can i use a Java Servlet running on the server to handle this request and also how can I do this, like how do is send the image back to the phone.

BalusC
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SaNmm
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  • I am not sure on also how do is send photo from the phone to Sever and back ...my choice would be to use a server with java servelt – SaNmm Oct 26 '11 at 01:16
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Yes, this is possible. You've asked a very general question so all I can do is give you a general answer. You're going to want to do your communication with the server on a separate thread, not the UI thread. I suggest using an AsyncTaskLoader for this. To actually communicate with the server, use the HttpUrlConnection. When you get a response from the server, have the onLoaderFinished callback present the image to your user in your activity.

For more on Loaders, checkout this documentation.

Kurtis Nusbaum
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for client-server transactions, it's better to use a service rather than asynctask.

josephus
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  • can you give any example for such service i am planning to use JSON and HTTP Client and HTTPPOst to pass it to the server. – SaNmm Oct 26 '11 at 05:47
  • can't whip up a working example for you right now, but this [link](http://stackoverflow.com/questions/3197335/android-restful-api-service) can help you start with creating your own service, while this [link](http://timewasted.net/?p=127) should teach you how to do a rest request and handle response using HTTP Client. – josephus Oct 26 '11 at 12:16
  • Not always, it depends. If it's just going to be a one shot deal and none of the data is going to be cached, you probably don't have to spend time on the complexities of a Service. – Kurtis Nusbaum Oct 31 '11 at 14:11