Android : How Do You Store - Retrieve Data From A Text File In Java

Jun 17, 2010

The question is in the title.

Android : How do you store - retrieve data from a text file in Java


Android :: Is It Efficient To Use Text File Or XML File To Store Static Data

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 -->
<line number="1">
<entry name="a">This is line 1 a</entry>
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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Android : Way To Store - Retrieve Static Database File With Some Values

Feb 1, 2010

I am using ganymade eclipse 3.4 IDE and android sdk for development . I am trying to store static database file with some values on it in sqlite format. how can i add this file into the IDE and fetch the data from that file and store it . give me the guidance to do the development.

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Android :: How To Store Data In Remote Database / Retrieve Back?

Dec 2, 2009

Am new to mobile development environment as well as android. I m trying to store data in the remote database and retrieve back.

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Android :: How To Store _ Retrieve Data From Database When Device Is In Offline

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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Android :: Store And Retrieve Byte Array (image Data) To And From SQLite Database?

Nov 16, 2010

How do I store and retrieve a byte array (image data) to and from a SQLite database in Android?

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Android :: Way To Store XML Data In A Java Object From A SAX Parser

Jun 21, 2010

I have created a class with 3 sub classes in Java. The 3 sub classes contain variables to store information from my XML document. I am able to store in the first two for there are only single instances of the data in the XML. The third class contains variables that repeat multiple times. I want to store an object of "third class" objects. I also have a SAX parser class. I am doing this within an Android environment (1.6).

Does this make enough sense without displaying any code?

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Android : How Do I Store Data Into A Flat File In Phone?

Jul 15, 2010

I want to store a few values in the form of high scores. But since im not going to be storing more than 5 values, using SQLlite doesn't seem appropriate. Another option considering was a flat file, but not sure how to go about..

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Android : How To Store Contacts In Phone From A Text File?

May 10, 2010

I have one txt file which contains contacts in vcf format, Now I want to update my address book (insert that contacts in my address book) using this txt file. How to do that?

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Android :: Store Data In IPhone App Be Taken From Sqlite / Preferences List File?

Aug 3, 2010

I am planning to store a password in my Native app (Android and iPhone). Should I store them after encrypting it ? or can I store it without any encryption? Are they really secure?

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Android :: Parse A Text File Using Java

Jul 25, 2010

where I can find more information about how to parse a text file in Java and extracting a particular String or reg ex out of It.

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Android :: What Java XML Parser To Extract Data From 2000 Lines File?

Oct 5, 2010

In my Android app I need to extract data from a xml file (the file will have less than 2000 lines). I have no experience with XML parsing, so I don't know what the best approach is. DOM parser is perhaps not a good option, because I am on a mobile device. On the other hand with SAX I would probably end with more complicated code. What would you recommend?

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Android :: Reading Defining Line Of Text File In Java

Oct 2, 2010

I am trying to develop application for android . how I can get the defining line of textfile? For instance I have to read 15. line of textfile. how I can do that?

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Android :: Database Connection Java File - Check Data - Login Page

Jul 8, 2010

I'm doing Major Project on my final year and I'm very new to Android plus I;m not good at codings. I need help with my login page.

I've created something like a database connection java file which is this:


I've already created a database for users using SQLite. The database name is Users and the table is called User. The records inside the table are Username, Password, LastName, FirstName. I've inserted one user's info into the database. The problem is I do not know whether my is correct.

And I've also created Hardcoded Login page:


So I want to know how I should apply the database connection on the Should I insert database connection something like db.Open();? I studied ASP.Net a few months back and I kind of forget most of what I've learnt. So how should I open the database connection on and how to check with database whether the user enters the right username and password?

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Android : Class Generator For Data Classes Used In Java / Droid From Existing Wsdl File?

Apr 3, 2010

Is there any class generators to process web services in Android/Java? I may have to write my own to generate classes against WSDL but I'm trying not to. Also is there one for REST services as well?

If not providing me with discovery service suggestions like disco/wsdl are good enough.

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Android :: Store Map Coordinates In A Xml And Retrieve Them?

Oct 5, 2010

I have 100 map coordinates which I plan to store in 5 xml,s, how can I store them in a xml and retrieve them in this code....

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Android :: Store And Retrieve Preferences In Phone?

Jun 13, 2010

How to store and retrieve preferences in ANDROID?

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Android :: Store Image In Sd Card And Retrieve Path

Nov 15, 2010

I am using ACTION_IMAGE_CAPTURE for capturing image using intent as follwo..

Intent cameraIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, (new File(Environment.getExternalStorageDirectory(),
String.valueOf(System.currentTimeMillis()) + ".jpg")));
startActivityForResult(cameraIntent, 0);

i need to store image in sdcard and retrieve path of that image in onActivityResult() method i don't know how to get image path of currently captured image.

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Android :: Need To Store _ Retrieve Vector In Sqlite Database

Sep 1, 2010

I need to store an retrieve a vector of an unknown number of objects in an android sqlite database. Essentially, the setup is this: I am developing a task management app, where the user can add as many notes as they like to their tasks. My current setup uses one database, with one row per task. This presents a problem when I need to associate multiple notes and their associated information with one task. I can see two approaches: try to store an array of notes or a vector or something as a BLOB in the task's row, or have another notes database in which each row contains a note and it's info, as well the id of the task which the note belongs to. This seems a little easier to implement, as all I would have to do to retrieve the data would be to get a cursor of all notes matching a particular id and then iterate through that to display them to the user. However, it seems a little inefficient to have a whole new database just for notes, and it makes syncing and deleting notes a little more difficult as well. What do you think? Is it worth it to have a separate notes database? Should I use a BLOB or go for the separate database? If a BLOB, are there any good tutorials out there for storing and retrieving objects as BLOBs?

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Android : Way To Store / Retrieve Email Id / Password In Phone?

Jan 23, 2010

I am developing an application which requires to store and retrieve email id and password because when the user login into the application he should be directly logged in into the application.

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Android :: Read Data From Text File Without Downloading It?

Oct 27, 2010

Is there a way to do it within an app without downloading the file first? Somehow stream the text content?

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Android :: Read Text File Data In Droid?

May 25, 2010

I am new to android.I need to read text file from SDcard and display that text file.Is there any possibility to view a text file directly in android. or else how to read and display the text file ?

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Android :: Reading Text Or XML File In Android Java

Feb 2, 2010

I am currently working on a group project to build an Android game. I have been delegated the task of building a PC based level editor (which is all done). All I have to do now is decide on the file format for the map that is outputted. At the moment it is just a standard text file with different numbers to represent different tiles; E.G 0=path 1=wall 2=enemy.

1 1 1 1 1 1 1 1
1 0 0 0 2 0 0 1
1 1 1 1 1 1 1 1

The actual Android game then takes this file and stores the values into a 2D Array. However those who are making the actual game are having difficulty opening a text file, and others have told me it has to be done using an XML file. I have now been asked to find a away to take in this input. how I would read the text file and put the values into a int array[][] ? Or if it is easier, use an XML file and tell me how to format that file and read the values into a int array[][]

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Android :: Best Way To Store Application Data / When Data Stored / Data Format Could Change In Future Versions?

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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Android :: Need To Read Trace - Text File /no Data Directory

Sep 25, 2009

Sometimes in LogCat I'll see Wrote stack trace to '/data/anr/traces.txt'

But when using the DDMS perspective, "File Explorer" View, I can't see anything in the "data" directory, I'm assuming because permission denied. Is there a way (short of rooting my ion device) to read what's in that text file?

Is there perhaps an android app for developers that will show the contents of the file? It would seem there would have to be some way of reading the file without rooting the device, otherwise why does the o.s. write it out? How can I read this file?

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Android :: Sample Code To Store / Retrieve Images In SQLite Database In Droid?

Dec 16, 2009

I want to know how to store the images in SQLite database in android.and also how to retrieve it. anyone give the samplecode or any URL give me to develop my application.

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Android :: Retrieve Java Script Function Value In Webview Component

Feb 17, 2010

How can I retrieve the java script function value from a web page loaded withing a webview component?

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Android :: Call Java File On Click In Another Java Class?

May 19, 2010

i have two files

App. java contains frontend buttons and functionalities lists the imagesin the sd card. i want to call in click event in
package gallery.display;
import android.os.Bundle;
import android.view.View.OnClickListener;
import android.view.View;...........

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Create App That Draws A Map Reading Data From Text File?

Oct 12, 2011

I have to create an app that draws a map reading data from a text file : for example the text file can be like

. index x y orientation
vertex 1 0 0 0
vertex 2 5 0 0.5
vertex 3 10 2 0.3

so i need to do in java something like fscanf does in c (fscanf scans the text file for known formatted data... example, in the file i written i know each line has a string float float float and i need to put them into a specific data structure that can be a list of elements "vertex"

next, when i have all the data, draw a simple image rappresenting the data..

my questions are...

there is a function like fscanf?

and then.. what's better for drawing the 2d map? i have tu use Opengl? At the end i have to draw the image pixel by pixel.. i hope there is something easier then openGL

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Android :: Does The Dalvik File Format - .dx - Support More Instructions Than Java .class File

Apr 17, 2010

Is there anything the Dalvik VM supports (in terms of bytecode) which is not used currently because the .class files don't have it?

As an example, if people would write their own Source-to-DX converter for their functional language XYZ, would they be able to implement e. g. full tail calls although the .class file does support tail calls only under certain circumstances?

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