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reaching location through city map?

3 replies · 3,356 views · Started 14 March 2005

_Student 14 Mar 2005, 21:11

Hello every one

I want to develop an application that have the ability to determine for the user of the mobile where he is from a map that is located in the mobile ... that is the map is put in the phone and it was devided into regions; when the user want to know where he is, he can see the region of his location in the map!

U think that do that is possible through J2ME in symbianOS
and what i want to start that

Thanks for u ...

N/A 15 Mar 2005, 06:37

You can't get the cell ID from J2ME (you can from C++), but that's not a very accurate way (especially if you don't know where the base stations are physically).

You might be able to get the exact coordinates from a Bluetooth GPS device (at least you can with C++; there are plenty of C++ apps for Symbian OS that show the position on a map; WayFinder, TomTom, Route 66, Navicore).

Your biggest issue is where to get the maps (bitmap maps take up enormous amounts of memory, vector maps are expensive to buy).

unals 29 Mar 2005, 21:45

I actually want to develop a similar application too. Here is what was in my mind, and I think I will need a lot of help.
1. I would like to write a map browser application. Just like we do with mapquest or yahoomaps or googlemap on the net. I would like to download a map of interest from mapquest or google or yahoomap to the symbian phone and then I would like to be able to browse the map on the phone.
2. In the second stage I would like to be able to read GPS data (via bluetooth)from a GPS device (I know triangulation using the base station locations is not very accurate, but I would like to be able to do that too). Then, using the location data (be it from GPS device or from the base stations), I would like to be able to mark myself (and preferably my direction and speed) on the map.
Now, other than the technical questions, I have more fundamental qquestions:
1. Should I use java or C++? Which one do you think is better and easier? I have knowledge of C, some C++, but not much java. (However when I read some codes I can figure them out usually).

Any help is greatly appreciated.