Android : How Do You Store - Retrieve Data From A Text File In Java
Jun 17, 2010The question is in the title.
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Android :: Is It Efficient To Use Text File Or XML File To Store Static Data
Jul 31, 2009I 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".
Android : Way To Store - Retrieve Static Database File With Some Values
Feb 1, 2010I 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.
View 1 Replies View RelatedAndroid :: How To Store Data In Remote Database / Retrieve Back?
Dec 2, 2009Am new to mobile development environment as well as android. I m trying to store data in the remote database and retrieve back.
View 2 Replies View RelatedAndroid :: How To Store _ Retrieve Data From Database When Device Is In Offline
Aug 4, 2010I 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.
View 1 Replies View RelatedAndroid :: Store And Retrieve Byte Array (image Data) To And From SQLite Database?
Nov 16, 2010How do I store and retrieve a byte array (image data) to and from a SQLite database in Android?
View 1 Replies View RelatedAndroid :: Way To Store XML Data In A Java Object From A SAX Parser
Jun 21, 2010I 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?
Android : How Do I Store Data Into A Flat File In Phone?
Jul 15, 2010I 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..
View 2 Replies View RelatedAndroid : How To Store Contacts In Phone From A Text File?
May 10, 2010I 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?
View 2 Replies View RelatedAndroid :: Store Data In IPhone App Be Taken From Sqlite / Preferences List File?
Aug 3, 2010I 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?
View 3 Replies View RelatedAndroid :: Parse A Text File Using Java
Jul 25, 2010where 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.
View 1 Replies View RelatedAndroid :: What Java XML Parser To Extract Data From 2000 Lines File?
Oct 5, 2010In 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?
View 4 Replies View RelatedAndroid :: Reading Defining Line Of Text File In Java
Oct 2, 2010I 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?
View 1 Replies View RelatedAndroid :: Database Connection Java File - Check Data - Login Page
Jul 8, 2010I'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:
CODE:.......
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 UserDB.java is correct.
And I've also created login.java. Hardcoded Login page:
CODE:.........
So I want to know how I should apply the database connection on the login.java. 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 login.java and how to check with database whether the user enters the right username and password?
Android : Class Generator For Data Classes Used In Java / Droid From Existing Wsdl File?
Apr 3, 2010Is 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.
Android :: Store Map Coordinates In A Xml And Retrieve Them?
Oct 5, 2010I 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....
View 3 Replies View RelatedAndroid :: Store And Retrieve Preferences In Phone?
Jun 13, 2010How to store and retrieve preferences in ANDROID?
View 1 Replies View RelatedAndroid :: Store Image In Sd Card And Retrieve Path
Nov 15, 2010I 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.
Android :: Need To Store _ Retrieve Vector In Sqlite Database
Sep 1, 2010I 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?
View 2 Replies View RelatedAndroid : Way To Store / Retrieve Email Id / Password In Phone?
Jan 23, 2010I 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.
View 3 Replies View RelatedAndroid :: Read Data From Text File Without Downloading It?
Oct 27, 2010Is there a way to do it within an app without downloading the file first? Somehow stream the text content?
View 1 Replies View RelatedAndroid :: Read Text File Data In Droid?
May 25, 2010I 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 ?
View 1 Replies View RelatedAndroid :: Reading Text Or XML File In Android Java
Feb 2, 2010I 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[][]
Android :: Best Way To Store Application Data / When Data Stored / Data Format Could Change In Future Versions?
Mar 4, 2010I'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.
View 3 Replies View RelatedAndroid :: Need To Read Trace - Text File /no Data Directory
Sep 25, 2009Sometimes 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?
Android :: Sample Code To Store / Retrieve Images In SQLite Database In Droid?
Dec 16, 2009I 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.
View 3 Replies View RelatedAndroid :: Retrieve Java Script Function Value In Webview Component
Feb 17, 2010How can I retrieve the java script function value from a web page loaded withing a webview component?
View 1 Replies View RelatedAndroid :: Call Java File On Click In Another Java Class?
May 19, 2010i have two files
App.java
Gallery.java
App. java contains frontend buttons and functionalities Gallery.java lists the imagesin the sd card. i want to call Gallery.java in click event in app.java
App.java
package gallery.display;
import android.app.Activity;
import android.os.Bundle;
import android.view.View.OnClickListener;
import android.view.View;...........
Create App That Draws A Map Reading Data From Text File?
Oct 12, 2011I 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
Android :: Does The Dalvik File Format - .dx - Support More Instructions Than Java .class File
Apr 17, 2010Is 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?