Three things you should consider:

1) Separate your application into foreground Activity (more likely
multiple Activities) and a Service
2) do the download with a worker thread (e.g. AsyncTask)
3) Read up on the PowerManager (in package android.os), in particular,
the WakeLock object; PARTIAL_WAKE_LOCK is probably the flag you want.

On Jul 30, 1:11 am, Yannick Plenevaux <yplenevaux.geoli...@gmail.com>
wrote:
> Hello everybody,
>
> I am currently searching to set out an issue I encounter.
> I am developing an Application on Android which have to download a lot
> of data and then be unused for a while.
>
> During the download, the device is locked and switch to a kind of idle
> mode that close the wifi connection.
> I don't find out anything about it so I need your precious help.
>
> I would want to programmatically disable this idle mode. Is it
> possible, what sould I do for it?
>
> Respectfully regards,
>
> Yannick Plenevaux
> Geolives SA

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