Android :: How To Store Lots Of Longitudes On Device
Jul 26, 2010
I am looking into writing an Android app that has a database of approximately 2000 longitudes and latitudes which are effectively hard coded.I assume that once my app is installed, I can put this information into the SQLite database, but how should I distribute this information when the app is downloaded?One option I thought of was some kind of Patricia Trie to minimize the size of the data (the points will be in a number of clusters, rather than evenly distributed), but I'm not sure whether such a collection would work when there are two associated numbers to store, along with perhaps some other information such as place name.Does anyone have any thoughts, input or suggestions?
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Apr 9, 2010
I'm writing an application wherein users will sometimes make orders through it. I want to give users the option to save their billing info (name, address, etc.) so that it can be quickly restored later if they want to make another order. The user will enter a password to secure the data. Obviously I can't just put this as a file on the device, as anyone can root/find the data. Is there a built-in Android method for storing secure data that is locked with a password? If not, what is a good place to start for storing this data securely using Java?
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Jun 17, 2010
How to store username password in device memory.Even after the user closes the application and returns back , he should be able to authenticate his username and password. Right now I am testing in Eclipse. so please help me with some pointers/links which will allow me to test in Eclipse and eventually run on Mobile.
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Aug 4, 2010
I need to store and retrieve data from database when the device is in offline.When i run my application when the device have internet it fetches data and shows it user,but i also need the same output when the device is in offline by saving previously obtained data in database,anyone help me to implement it in my application.
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Sep 14, 2009
We want to store credentials for a user to a web service so the user doesn't have to repeatedly login, but we're concerned about security. We can't store a hash on the database, but we could probably use JCE encryption locally.
Is the content in SharedPreferences secured on the Android device?
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Jun 25, 2010
Is it possible to store custom ringtones on the device itself (nexus one) rather than on the sd card? t5hat would eliminate the problems resulting from a mounted sd card. when I have the sd card mounted and someone with a custom ringtone calls I don't get any ring at all.
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Feb 21, 2013
I'm from India and we do not have full play store. As soon as I login even when using USA VPN, play store shows me only apps and not the full version. as soon as i logout i can again view full play store.
Till 2 days ago I was able to access full site after login. On same PC when I use my brother's id I can see full play store. Something wrong with my account. It seems like Google has blocked my account for these services. M not able to make any purchases other than from App section.
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Feb 19, 2014
Can I keep apps deleted from Play Store if I format my device?
I have a great app that I can't find anymore in the play store, and not just from my device it's just GONE, though I can find several copycats but none are as good as the original. The thing is, I want to format my cell but I don't want to lose this app. Is there a way to copy the app to my pc and reinstall it after I formated my device?
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Jun 14, 2012
I have recently purchased a pendo pad http:[url].... and it has a getjar apps store on it instead of google play, I have attempted installing the gplay store on the device with the .apk and that didn't work.
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Nov 14, 2010
I am trying to post data to the Blob Store on google's app engine, this code runs without throwing any exceptions, but on the blobstore end there is no log on the post request at all. The server side stuff works when i post using a form (albeit with mime data). I have allowed my android app to use internet. This is a stab in the dark but if any of you folks might have had an issue like this before perhaps the problem i am having might ring a bell
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Mar 23, 2010
I am working on an app that allows sending lots of text messages. I have two questions:-
1) If I send too many messages together (around 80), only about 10 actually go and the rest fail in the first try. Do networks limit how many sms can we send per second or something? Will pausing after every sms help in this case?
2) I believe Android shows a dialog box if we send more than 100 sms in an hour. I am sending SMS from a separate thread. Can Android block that thread if there are too many SMS being sent?
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Sep 13, 2009
I have notices following:
If I have a project with minimum files in res folder, the project saves quickly, compiles quickly and launches quickly. But if I have a lot of resources, my project is saving, compiling and launching during relatively long period of time. This is really frustrating if you do some minor UI updates, and you have always wait Eclipse to generate R file etc.
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Jan 18, 2010
Just wanted to let you all know about my new app. It's called Searchify, it's free, and it hooks in to the Quick Search Box (on Android 1.6 or higher) to let you do all sorts of things. Searching lets you perform translations, calculations, unit conversions, wikipedia searches, calendar entry and more just by typing in searches. Some of the things you can do with it: Unit converter: type a quantity (e.g. "10 pints" or "5 oz") into the search box to see a list of conversions. Calendar entry: Type an event in text (e.g. "tue 3pm meeting" or "tomorrow 3pm - thursday 5am event @ John's") to add it to your calendar. Translator: Type "translate" then a word or phrase in any language to see translations into languages of your choice.
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Jul 7, 2010
I have a HorizontalScrollView that has lots of views and images inside it.
The issue is that if I have lots of stuff inside it I will get a 'java.lang.OutOfMemoryError: bitmap size exceeds VM budget'
is there any way to use some kind of cache, or add/remove stuff as I move left/right so its not on memory all the time?
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Jun 17, 2009
I switched to SDK-1.5-R2, and also the source code released in May, 2009. But when I start to compile the Launcher module, lots of errors occurred.
Some classes cannot be resolved cause there are no such classes in Android.jar file. I.E. android.os.ServiceManager; android.app.ISearchManager;
and some fields inherited from parent class cannot be resolved either. I'd be very appreciated if anybody help me out of this problem.
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Jun 12, 2010
I have around 3000 messages from one person, currently they are all in one conversation, because of the number it takes a few moments to load the page. I know I can set the phone up to delete the old messages, but I don't really like deleting messages, or email, I just don't like doing it. I'm looking for an app (or if the existing message app has a solution) that will allow me to have a smaller conversation or a way to load just the last few messages unless I ask to see older messages similar the the iphone. Does anyone know if this kind of thing exists?
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Oct 28, 2011
I'm trying to draw on a map using markers. The problem I'm having is when I try to add lots of them, then I can't get it to run. To illustrate my problem, let's say I want to draw a square made of 900 smaller squares (30x30).I'm trying to add the markers to an itemizedoverlay, then drawing it.
Code:
public class MyItemizedOverlay extends ItemizedOverlay{
private ArrayList<OverlayItem> mOverlays = new ArrayList<OverlayItem>();
private Context mContext;
[code]....
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Apr 10, 2013
I have music that is playable with Google Play Music player, but not with other players. I have chosen for the music to be "on the device", and it plays when even in Airplane Mode, so I know it is not streaming, but the music files do not show up in my "Music" directory tree, or under any other file trees that I can find. I have used ES File Explorer to do a top down search for some of the missing titles, but it doesn't find them. I'm perplexed. There must be a cache somewhere, but I can't find it.
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Apr 13, 2009
In my ListView, there's one line of code in my ViewBinder that causes lots of garbage collection as I scroll through the list, about every two seconds...
D/dalvikvm(16312): GC freed 13171 objects / 659576 bytes in 162ms D/dalvikvm(16312): GC freed 13122 objects / 654128 bytes in 129ms D/dalvikvm(16312): GC freed 13134 objects / 655416 bytes in 142ms D/dalvikvm(16312): GC freed 13129 objects / 654840 bytes in 129ms D/dalvikvm(16312): GC freed 13149 objects / 655000 bytes in 110ms D/dalvikvm(16312): GC freed 13150 objects / 655720 bytes in 127ms D/dalvikvm(16312): GC freed 13075 objects / 652256 bytes in 111ms D/dalvikvm(16312): GC freed 13232 objects / 659040 bytes in 136ms D/dalvikvm(16312): GC freed 13106 objects / 653920 bytes in 110ms D/dalvikvm(16312): GC freed 13155 objects / 655152 bytes in 110ms
The offending code is here, which formats a price for each item in the list: String price = cursor.getString(columnIndex); final float pricef = Float.parseFloat(price); price = new StringBuffer("$").append(String.format("%. 2f",pricef)).toString(); ((TextView)view).setText(price);
If I comment out the line with String.format, the garbage collection goes away. So what's the "right" way to do this to avoid allocations? That database field holds an unformatted text string which I'm trying to format into proper currency format (example: format "1.5" to "$1.50")
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Jun 7, 2010
The one I used on my Hero is not in the market anymore. Anyone want to recommend one that has lots of popular songs etc?
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Nov 18, 2010
Lots of VNW "number has changed" messages
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Jul 14, 2010
I have updated my contacts and Google Calendar in preparation for the Captivate. Anxious to get going. I have spent quite a few hours reviewing one 13 page thread of 'favorite apps', and put together a list that I interest in looking at. I have some searching to do for some things that didn't come up. Priorities are good Calendaring; Easy use of voice for calling contacts; Financial Software to track stocks. Many other things of interest. Here is what I probably will be installing for sure some time fairly quickly (not all of my interests are met in this list): NOTE: The links may take you to a descriptive site, or may take you to a review..............
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Sep 7, 2010
So I have two blank home screens and I am not really sure what else to put on them. Anyone have any ideas? Widgets, apps, anything that will be useful.
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Aug 15, 2010
I need to find a hard case for my phone with lots of protection any ideas i have the bodyglove already
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Sep 23, 2010
My new X10 has got lots of small scratches on it, its my own fault! have dropped it once and not got a case for it yet, is there any way of buffing the scratches out? I can get a new screen (about 50 off ebay) but dont really want to spend money on a new screen if i can help it.
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Sep 29, 2010
Lately it seems that installing or updating an app is about a 50/50 chance of failure. This is both before and after I rooted. Then I installed LithiumMod and see the same thing. It doesn't appear to be any particular apps, and I've noticed it most recently with pandora update, wow armory, angry birds lite, and others. It makes the phone very useless in the instance where I need a new app and can't get it to work.
Going to Settings > Applications > Market > Clear Data seems to work... again, 50/50. Doesn't fix it every time.
Any ideas? I've googled around and most solutions are the "clear data" method, or just "try it again".
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Oct 7, 2012
I'm trying to get the LiveView plugin template to work but upon import of the project into Eclipse, I already have 13 errors and 2 warnings. I have already downloaded SDK for Android 1.6 which I believe is what it requires. The errors are as follows:
Code:
The method startPlugin() of type AbstractPluginService.LiveViewCallback must override a superclass method AbstractPluginService.java /com.sonyericsson.extras.liveview.plugins.PluginPreferences/src/com/sonyericsson/extras/liveview/plugins line 173 Java Problem
[code]...
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Nov 15, 2013
So I have my T-Mobile Galaxy S4 running an unofficial CM11 ROM, and I noticed that battery life seems a little whack, and well Google Keyboard happened to be 2nd place for battery use, and has already downloaded almost 500mb, heck probably 502mb right now. I find that quite insane, and it just keeps going. I feel like this is also the reason why my phone is constantly overly warm. SGH-M919
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Sep 11, 2010
I noticed that facebook notifications don't work at all anymore. But since the most recent update my phone has rebooted at least 2 times a day. Most recently during a phone call? I got this phone as a refurb from Verizon after the OTA bricked my last one. Does this warrant a replacement or is it a software bug I have to track down? I honestly don't want to go through the exchange process again.
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Jul 27, 2012
When I install some custom Rom and try to unlock the screen display of my phone gets lots of dots and blur...
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