Android : Encrypting Application Data File That Is Bundled With Apk
Apr 21, 2009
I plan to bundle an xml data file that has all the metadata required by the application. When my app loads for the first time, the xml data file is read and local database is created and populated. This xml file is a crucial part of my app and it holds at least 100k entries. I don't want this data to be compromised.
Is there a way to encrypt this data file so that the file is unreadable in case someone opens the .apk file and extracts the data file.
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Mar 11, 2010
I have a database that I have already populated locally. I want to bundle it with my applications and access it at runtime (never want to re-write it anywhere, nor write to the database, simply read). What is the path of a file that I have added to the bundle? And, can i use that path with a SQLiteDatabase.openDatabase ?
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Aug 4, 2009
In my Android application I want to encrypt a db file. How can I do that?
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Oct 30, 2010
Hi everyone new to this forum and new to android, have to say loving my new Samsung Galaxy S, I have rooted and lag fixed, the increase in speed is massive.
Two questions I have that I cant find anywhere,
1.What is the best way to back up my phone?
2.Is there an app to let you surf safely, ie encrypting your data
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Aug 21, 2009
I have written a test case to implement a conference contact management system with Content Provider and SQLite. The launch activity is a Listactivity and the customized provider is extended from ContentProvider, u know, actually the sample is so similar to the Notepad Sample in the official SDK packages. However, i can't find the created .db file in the /data/data/myapp/ except the /lib directory. Why?
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Mar 1, 2010
i want to delete file data that i have created in android application. if my application is terminated abnomally or nomally?
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Feb 11, 2010
Was looking for some guidance here. I need to replace the garbage keyboard bundled with 1.6 for something else. Which in your opinion is the best replacement and why? Maybe some comparisons would help also. Oh, by the way i'm running a mytouch 3g!
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Mar 4, 2010
I'm making an Android Java app game (although this question applies to all languages really) and hope to release the first version soon. I'm nervous about how I save data in my game. My problem is that, if in a later update, I decide to store more data or store the same data in a different way, I need to be careful I don't lose or corrupt data for users that upgrade (i.e. I want users to be able to use data created by an old version in the new version, like their high scores from before).For example, say I want to save high scores in version 1.
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Nov 22, 2009
What would I use to: Encrypt a string in PHP and Decrypt that string from Android? What methods are supported by both and which is the most secure?
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May 22, 2010
The last week or so I have been thinking about how to send and receive text messages that employers/parents can't read (obviously text messages are stored for a long time on your provider's server).
Is there a clean app for easily encrypting text messages? I bet my boss had a pretty good time with some text messages I sent to my lady when she was out of town.
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Apr 11, 2010
I want to have a separate project that runs my server communication code in a normal JVM for the purposes of integration testing. This code uses these libraries which are build into the Android Framework...
http://developer.android.com/reference/org/apache/http/client/package-summary.html
Does anybody know what version of Apache HTTP Client this is supposed to be? I want to run it without the Android tests which are painfully slow.
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Mar 6, 2010
Does anybody know if there's a way to encrypt and password-protect sent and received SMS messages?
I'm not bothered about encrypting messages being sent - just those that are stored on my phone.
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Apr 13, 2009
I am trying to play file which is stored in SDCARD in emulator. I have Linux O/S. So i need to provide command in run configuration. I am providing following parameter.
-sdcard /usr/android/sdcard/mysdcard.iso -audio oss [i]
The following is my code to play file.
try { mMediaPlayer.setDataSource("/sdcard/test_cbr.mp3"); mMediaPlayer.prepare(); // Giving error. mMediaPlayer.start(); }
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Jul 31, 2009
I have some reference data in a text file (~5MB) that I want to use with might android application.The file is of the format:
1|a|This is line 1a
1|b|This is line 1b
2|a|This is line 2a
2|b|This is line 2b
2|c|This is line 2c
What I want to know is the most efficient way (less memory, fast, size etc.) to use this file within my application.
a.) Should I save the file as a raw resource and open and read the whole file whenever I need a certain line.
b.) Should I convert the file to XML and use XPath to query the file when ever I need to look up a value
<!--sample XML -->
<data>
<line number="1">
<entry name="a">This is line 1 a</entry>
</line>
</data>
c.) Should I just copy & paste the whole file as a static string array in the application and use that.
[EDIT] I will also need to search this file and jump to arbitrary keywords e.g. "line 1a".
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Apr 21, 2010
Like many of you I've just got my Desire today. I got it from Orange, and as a result it's bundled with loads of applications I don't want e.g. a few demo games, orange maps...etc. How do I remove these. If I go to applications I can see the app there, but if I tap it, there is no option to delete
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Apr 14, 2010
Is it possible to copy a file located on the sdcard to a package's internal filesytem located at /data/data/packagename/files/ folder?
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Mar 29, 2009
I am saving an image using openFileOutput and now i want to use this image in my java script file.
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Aug 5, 2013
Encrypted their Android smartphone? I kind of want to do it just for kicks and giggles but I was reading online that encrypting can reduce phone performance. , does it reduce performance by a noticeable amount? Also, I never read anything about this but it was just a thought, would the constant decrypting also decrease battery life?
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Jun 23, 2010
to start with I've gone through the entire notepad tutorial, I'm a professional game programmer who has some extra time. (though most of my time has been in C++, I did take a year or two of Java classes in college, and remember some of it). I'm not sure the site is a good site to ask questions like this.. If someone has a Forum that might be a good place to ask these newbie questions, please feel free to point me in the direction. I've examined a few of the samples, and think I've a grasp of what I want to do. I've a three to four project plan for some Android releases to sharpen my skills, but since this is my first project and I have never really developed for a mobile phone or the android before, I'd like to make sure I have a solid plan.The first project is an example of the license plate game, however I want to do a few things to change it. Heck maybe when I'm done it'll become a bingo style game, with bluetooth connectivity, you never know. The base idea is I want to offer a list of states, with checkboxes next to them. so to do this, I'll be starting with a Linear List layout similar to the note pad example, and then have a row that is only a Checkbox. I can use text and call strike through if it's been checked off. Perhaps offer an option to not show them if they are checked.
But I want the list to be generated from a set of lists. Maybe all of America's states, maybe reasonable American states (no Hawaii, no Alaska) maybe a North American list, (add in Mexico and some Canadian provinces), a European list, who knows. I'd probably have to have a pop up window that lists all of the lists I suppose using a radiogroup of some sort. So then as far as the data, after weighing options I think best solution is to make a database with two fields, "checked" and "name".I figure I can use the menu for most of the user interaction (aside from clicking on stuff we want to check off) with maybe a few context menu items, I understand how to make all of those already so I should be good. The question I have is what is the best way to populate the lists? Should I create raw data, and have different files for all the lists? Or is there some other way to do this? I've seen this done on the searchable dictionary, but I'd like to hear what people who have actually generated the data like this before. In addition is there an easy way to look at the sql database these applications create, or do you have to run searches on them and output the data? Finally any other suggestion or advice? I definitely want to try to get something like this on the market so I can see the full life cycle and see if anyone actually likes it. (luckily there's not a plethora of them already) but I also want a few people to look over my code if they're willing when I'm done to make sure I've done this right or at least not missing any basic mistakes.
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Feb 6, 2010
I want to add a flag that will tell how much time my application is running. This flag will have to stay even after the application is removed. And, if its installed back, i must have a way to recover this flag. What's a way to implement this?
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Mar 19, 2009
Does someone could tell me if it is or not possible to get raw data from a sound file?
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Oct 1, 2010
I am new to android.What i did is i am creating a xml file with some data.Now i need to add some additional data to existing xml file dynamically.How can i done this..
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Dec 29, 2009
This is truly a beginner's question. I installed and successfully ran the notepad
tutorials Note pad v1,2,3 and typed in a few notes. Can i import data (manually )from an
external text file into the sq lite dbs? I looked in my Notepad workspace folders
but no dbs seem to have been created? I looked for anything with .db extension or
named 'data' as specified in the code.
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Nov 19, 2010
Just wondering what would be the best way to grab the following data and parse it.Here's an example of some the data I want to pull.
<?xml version="1.0" encoding="UTF-8" ?>
<eveapi version="2">
<currentTime>2010-11-19 19:23:44</currentTime>
<result>
<rowset name="characters" key="characterID" columns="name,characterID,corporationName,corporationID">
<row name="jennyhills" characterID="90052591" corporationName="Imperial Academy" corporationID="1000166" />
</rowset>
</result>
<cachedUntil>2010-11-19 20:20:44</cachedUntil>
</eveapi>
I've seen some examples on how to parse XML data but they are all based on if statements and that's a lot of hard coding is there a more genertic way to do this?
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Mar 13, 2010
how to read/write log data into a text file in android that file should be res folder.
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Dec 10, 2009
My application needs to intensively manipulate (read-write) on some structured text data.The size of the data is significant 1Mb. And there is initial data available for the user to start with.My idea is to put this data as a file in the .apk. Then, on initial application launch to read this data and populate Android SQLite database with it. Then just work with this database. But after the database is populated the data file is no longer needed. And I'd like to remove it to free some memory. Alternate approach is to work with this data file instead of SQLite database. But I assume SQLite would work a magnitude faster then i/o on my data file..
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May 1, 2009
My question is how to copy a file from sdcard to /data/misc/wifi directory? I am working on a configuration tool for wiki supporting wpa enterprise. The configured file wpa_supplicant.conf must be put in / data/misc/wifi in order to work. So how can I move the file from sdcard to there? Is there any function calls to request a superuser access?
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Aug 30, 2010
I'm creating an app that I want to seed with a data file the app will use as its initial state. In the Eclipse project structure, where do I add the data file so that when the app is deployed to the device (and emulator) the data file is deployed with it?
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Nov 26, 2009
I am developing an application that periodically sends information to an external server.I make a local copy of the data being sent, for backup purposes.What is the best option to store the data in terms of saving battery life? Each data submission is a serialized object (the class has 5 fields, including a date, numbers and strings) of about 5K-10K.Any other idea?
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Sep 3, 2010
In my android app i am reading a file but require any the data on third line to be displayed.Is there any way to do that.
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