什么是获取旅行应用程序数据的好方法

Question

I have ran into a small issue with an Android App that I am currently working on. I have a list of points of interest declared in an XML file. The POI's look like this:

    <hotel>
    <name>Hotel Atlas</name>
    <latitude>45.612079</latitude>
    <longitude>25.660756</longitude>
    <thumb_url>/hotels/atlas.jpg</thumb_url>
    <phone>039999999</phone>
    </hotel>

The problem that I have is that there are about 200 points of interest and every time the users access the app the XML is read every time from an online location and that means high volumes of internet traffic. The XML is stored online so I can update it every time I want to add another POI and not force users to update the app. Is there any way to send this data to the app and not require to download the entire XML?

I have not yet found an optimum sollution for this and decided to ask for some opinions.

Thanks, Vlad

Answer 1

There are only 2 possible ways:

1. Either give static database with all POI or
2. Load data from web whenever required.

Now you can do one thing, keep static database with App. Make web call once app starts and check for the updated data if any changes you made in server database. If there is any change on server database, then update only those data to the local(static) database.

For implementing above step, you must have to pass Last Updated date to/from server. I mean whenever you make web call, you need to pass last updated date from the client, server will check for new data to be updated post this date. Server will store client date as updated date and return back to client.

Answer 2

Maybe it's possible to store POIs like "One POI - One file"? In this case you can easily read only new points from server