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How to store Google map file into Sqlite database?
Google maps has no real support for caching. There is no public API to get the map data in its entirety and cache it up for later usage. Thus, you're not really going to be able to view that data on a map if the user exits the map activity and goes offline. You can of course save placemarks and such to KML or a database (maybe even with a jpg snapshot of the map), but that doesn't sound like what you want.
Google Earth does have support for caching, however the cache is very small (I don't know the max size off the top of my head). Furthermore, you can't push any data through Google Earth on the phone since it has no public API. If you happen to have a Google Earth Enterprise server sitting around, you can point the phone at your server and use network links to serve data up to the globe with some evil black magic trickery.
In that case, I think you want to store only the co-ordinates into the database! You can get it by exploiting GPS. I am not a seasoned programmer, but trying to see myself, if I get an example answer soon, i will comeback :)
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In android mobiles there is possibility for clearing local data stored without any authentication.If we go to application manager and select an app->click clear data button the local data including files,database will get erased.I have an idea of introducing a routine to authenticate to clear the local data.So that other than user no one can clear it.Is it possible ?
This "CLEAR DATA" option is severely broken for the use-case of Home Screen widgets that may have shared preferences and/or some local cached data.
It is also completely against the developer documentation which says:
"You can save files directly on the device's internal storage. By default, files saved to the internal storage are private to your application and other applications cannot access them (nor can the user). When the user uninstalls your application, these files are removed."
I don't know if this answer is going to be helpful or not anyway i will tell you my idea,
i don't know if there is any mechanism that prevents the user from clearing the /data/data/<applicaton folder> but you can refer the Android device admin API at http://developer.android.com/guide/topics/admin/device-admin.html another approach is that(Don't know if that's even possible) to listen to the Settings>apps activity and show an authentication form but i think that wont be able to solve this problem here anyway maybe this idea may ring a bell
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I am working on android quiz game and dont know how to write code that save score of every user at the end of game with differnt id on server side. So that i can check the winner with highscore after some days. I prefer to use sqlite database but dont know much about this. If someone know about this problem plz help me with example of some code.
Thanks in advance!
Anyone have better answer than this?
There are different storage options available in android. Choose the one that suits you the best.
As far as Sqlite, Yes its good option for storing structured data in a private database. Go, through this simple Sqlite sample here , here and here
If you want to maintain achievements, leaderboards, and real-time multiplayer stats to your mobile then Google Play Games services should be your option as rightly mentioned by
#MarvinLabs.
You should use the Google Play Games services. That provides all you need and sample code.
https://developers.google.com/games/services/
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I am developing an app to capture an image of debit/credit card and redirect the bank URL of that card. Is there any idea to get bank URL API? because we are not supposed to develop own web service to retrieve the URL...Please Guide me what I have to do.
I doubt there's an image->url webservice ready for your use.
You will need some form of image handling algoritm. An easy way to do this is just measure the amount of colour in the card. Lots of green with a bit of red -> Bank A. All black -> Bank B. There are of course lots of ways to do this, few are easy and you will likely depend on background, lighting and so on.
Once you have a way to distinguish a card you will need a database, either locally on the phone or a web service that helps you go from image data to bank url.
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I have succeeded to determine the walking direction and the distance of a person.
I then wish to plot his or her position on the screen.
How may I do that?
I understand the question may not be that specific, but what I wish to get from you guys are just some ideas.
e.g. which section should I read in the Android Development website or which external library should I import to help?
Use googles LocationClient to get location updates. On every update get the lat and long of the position provided.
You can use Location Client along side google maps to plot location data. Every update you will just remove your marker and place it at the new location. Note you do not have to remove you marker. Then you will have a plot of the locations that you were at. I have seen trail programs that use this to plot hiking paths.
http://developer.android.com/reference/com/google/android/gms/location/LocationClient.html
There is also a locationmanager that will let you work a little more with the location providers.
http://developer.android.com/guide/topics/location/strategies.html
Here is an example program on the android dev site.
http://developer.android.com/training/location/retrieve-current.html
If I understand correctly, you are looking to plot this data in a graph. I would highly suggest using AndroidPlot (http://androidplot.com/) from here you can download their sample code to make a simple graph.
If you are looking to then to then show the person how far they went and for how long you can plot this data pretty easily in a graph.
If you really wish to show this data on a map then you do not want to use AndroidPlot.
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I'm an Android enthusiastic. I'm thinking of a eco-friendly app that awares the user about the electricity consumption they had made so far. So, I need some way to measure the electricity usage from the Electricity Meters. Most of the apps that I have browsed and used from Android market required me to enter the electricity usage manually which is kind of hectic and discouraging aspect of such apps. I want to automate that part and improve such apps. Any idea, Android Folks? Any suggestion, Android Guru?
As per http://en.wikipedia.org/wiki/Automatic_meter_reading there are many different types and likely proprietary implementations of the protocol used by these wireless meters.
Some likely even include encrypted or checksum verified protocols which would further prevent reading the data.
It's a good idea, but without official support from the companies supplying the meter reading technology you are probably out of luck.
Well, you could make the users take a picture of the meter. Then you could analyse the image...
Have you had a look at ioio ?
You may be able to interface it with a meter, if you have a way of converting the signal from a meter so the ioio can read it you should be able to make the app.
I am currently working on a project that implements this but a bit differently using a watt meter and amp meter
http://www.sparkfun.com/products/10748