Android : Creating Multiple Tables In A Single Database?

Feb 22, 2010

How to create two or more tables in one database in single class which extends sqliteopenhelper in one function oncreate.

Android : Creating multiple tables in a single database?


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Android :: Best Practices For Creating Multiple App Versions From A Single Codebase?

May 4, 2010

Are there any viable approaches for creating multiple .APKs out of a single codebase? The apps may share the same code, but they could have different manifest files, different resources, or different external libraries (for example in an app with both free and paid versions, the free version could have a library for display ads). Ideally, this would be a single Eclipse project, with a way to specify which app to build/debug, and possibly a command line way to batch build everything.

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Android :: Android ContentProvider Database Query Multiple Tables

May 7, 2010

I'm writing an RSS reader for Android. I've faced a certain difficulty which the problem I can't resolve since databases aren't my expertise.. So i figured out maybe one of you could help me out! I currently have 3 tables (Categories, links and feeds). My goal is too link a feed to multiple categories. Therefor I'm using a Link table. My databases is an Android ContentProvider (sqlite) and looks like the following:

| Categories | | Links | | Feeds |
|------------| |---------| |-------|
| _ID | | Category| | _ID |
| Title | | Feed | | Title |
| URL |

I currently wrote the following code in my FeedListActivity to retrieve a list of links and their feeds.

CODE:.................

Now my question:

I was wondering how I could optimize this database layout, code or query so I would get my entries in a more efficient way. Because i believe this link table or the query to retrieve links isn't needed! Or am i doing this the correct way?

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Android :: Android - Accessing Single Database From Multiple Activities In Application

Dec 15, 2009

I have a todo list type application that stores all of the note data in a sqlite3 database. Each activity in the application needs access to the database to edit different parts of the data in real time.

Currently, I have each activity open its own DBManager object (the helper class I created to manage the database). This is causing problems though and I would like a slightly more global access solution so I don't have to keep opening/closing/creating a database.

I'm considering several options, and would like to hear pros and cons of each as well as other suggestions.

Singleton style. Have a wrapper class that returns a reference to the only database manager so any activity that needs it can use it.

Static Manager. Have the manager class be entirely static members and have it open the database on load. Easily accessible by anyone that needs it (which is everyone).

Merger between 1 and 2. I could make a database manager class that initializes the member singleton instance of the database and all of the data manipulation methods were static. Then I wouldn't even need a reference to the singleton to access the database.

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Android :: Create Database With Two Tables?

Jul 30, 2009

I am trying to create a database with two tables. Employees and Computers. A spinner with employee names fill properly when I don't try create and do anything with the second table...

The code to create is:

CODE:.........................

Is there somehting I am doing wrong during the creating, as the rest of the code (to read data) is exactly the same...

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Android :: View Tables Created In Database

Oct 6, 2010

I created a data base named as example.db with some tables in SqlLite. It worked fine. It was also created in data/data/com.mypackage.myapp/databases/example.db. Now, I need to open that database and see the content in the database.

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Android :: Way To Retrieve A List Of All Tables In Database?

Nov 10, 2010

I have this database file under the usual databases folder and a bunch of tables inside it. Please note that I don't want to retrieve under the command line. I know I can use the ".tables" command. I want to retrieve a list of all tables in it, using code, so that I can execute some specific algorithms on each of them. Also, I didn't find any questions with this problem on Android, so please forgive me if there is any. I was wondering if there is any function I can use under Databases, but I didn't find any either.

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Android :: Tables Created Using SQlite Database Will Be Stored

Oct 16, 2010

Where do the tables created using SQlite database will be stored in Android? how to access them and see the data contained in them.

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Android : Tool To See Phone Database - Tables And Data

Jan 27, 2010

I am new to Android and i would like to know if there's any tool to see databases (.db) tables and data into these tables.

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Android : Multiple Tables In One ContentProvider

Oct 6, 2009

I want to operate on multiple tables. I searched a lot but everywhere I could find is single table with one content provider.

How can I use multiple tables under one content provider? How can I get result from two/three tables ?

Can I provide my own SQL select query from multiple tables in ContentProvider?

Can anybody give me any example or link where I can get idea?

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Android :: Way To Achieve Listview From Multiple Tables?

Aug 22, 2010

I'd like to populate a listview from 2 tables. Anyone know how I can achieve this? Currently what I have looks like but it only works with one adapter.

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Android :: Optimization Proposals For ListView With Data From Multiple Tables

Aug 18, 2010

I just encountered the following situation. I have an Android app with a scenario which I guess may happen in multiple apps. It's about tagging/labeling/categorizing, call it as you want.After CommonsWare's feedback here a bit of a clarification. I'm weird about doing the second query to the DB inside the CursorAdapter, basically this would result in one query per row and I fear this will heavily impact my performance (I've still to test it on a real device with a substantial amount of data to see how much this impacts).My question therefore is on whether there are some strategies on how to avoid this given my data model or whether I have to basically "live" with that :)

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Android :: Functionality To Search Database Tables In Android

Aug 7, 2010

I have implemented the search functionality using the android search dialog.to search multiple columns of a table using LIKE query.But search became slow as I have written a query in such a way that every time the text of each field(like the sample fields title,description category etc.) will be searched. title LIKE "---"OR description LIKE ''---"OR.....category LIKE "---"OR location LIKE"---"to. So is there any other way to speed up the functionality..

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Android :: Creating Database In SQLite

May 23, 2009

I am new to android and I have a problem in creating a database.

public class database extends ListActivity {
/** Called when the activity is first created. */
private final String MY_DATABASE_NAME = "myCoolUserDB.db";
private final String MY_DATABASE_TABLE = "t_Users";
Context c;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
ArrayList<String> results = new ArrayList<String>();
setContentView(R.layout.main);
SQLiteDatabase mydb=null;
try
{
mydb.openOrCreateDatabase(MY_DATABASE_NAME, null);

} catch(Exception e){}
}}

When I run this code it throws a run time exception.

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Android :: Creating Database For Application

Apr 18, 2010

I have started creating database for my application. It is working well. The data is also getting stored.But the issue is that i require dropping table, that already exists, every time i run the application.

But one thing i found is that whenever i change the version of the database in my code, the table gets dropped. But i would like to know whether it is possible to drop table without changing the version number of the database.

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Android :: Creating SQLite Database In Phone

Jun 14, 2010

I want to create a SQLite database in my app, which contains three tables, I will add data into tables and will use them later on.but I like to keep database ,as if when app is first time installed it checks whether the database exist or not, if exists it updates it else if not then creates a new database.further more I am making a DB class to facilitate my app,so I wont be creating an activity for my database creation.if there are possible advices, please share with me

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Android : Creating App Database With Big Amount Of Data

Dec 23, 2009

The database of my application need to be filled with a lot of data, so during onCreate(), it's not only some create table sql instructions, there is a lot of inserts. The solution I chose is to store all this instructions in a sql file located in res/raw and which
is loaded with Resources.openRawResource(id).

It works well but I face to encoding issue, I have some accentuated caharacters in the sql file which appears bad in my application. This
my code to do this : Code...

The solution I found to avoid this is to load the sql instructions from a huge static final string instead of a file, and all accentuated characters appears well.

But Isn't there a more elegant way to load sql instructions than a big static final String attribute with all sql instructions?

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Can Use Own Database When Creating App

Jun 6, 2011

Is there a way that I can use my own database when creating an app?

What I mean by that is that I want the app to start with a database already loaded so one doesn't have to be created when the app is started?

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Android :: Want Multiple Activities In A Single View

Nov 19, 2010

Were looking into Android for writing a tablet based system. Part of the design is for the system to be as modular as possible. One aspect of this is to display any "STATUS" activities in a side view on the screen. It looks like I can use PackageManager queryIntentActivities() to find the activities that show status information. But, can I display these in a single view all at the same time (via a linear layout)? The activities would be installed in separate apk's (features). Can this be accomplished using ActivityGroup? Is this even allowed in Android? Everything I've read implies that Activities take the whole screen or float on top. This implies only one activity can be active at a time where as the design I'm thinking of uses the activities more like widgets.

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Android :: Multiple Applications Using Single Service

Jan 14, 2010

I have to write an application which starts a service. There will be other applications which have to use the service. Is it possible to write an application that only starts service and finishes with the service running?? How can i communicate from the different applications to the service? Is it possible to expose an interface from the service so that application can pass data to the service?

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Android :: Using Single Intent With Multiple Buttons

Aug 12, 2010

I have an android context menu with various selections and depending on the user selection I want to start an intent. The intent starts the same activity for all the buttons but will contain different String variables depending on the selection. I am currently using a switch, case methodology for my click listener but keep running into 'duplicate local variable' problems as I try to eliminate code repetition! If anyone could provide a-bit of pseudo-code that would be even better.

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Android :: Multiple Binds To Single Service?

Dec 25, 2009

Is there anything preventing more than one activity from binding to the same running service?

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Android : Multiple Listviews In Single Activity?

Apr 5, 2010

I want to have multiple listviews in single activity. But only one listview should be displayed at one time. The listviews will be loaded dynamically. So, how can I fill all the four listviews at the same time and display only one?

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Android : How To Add Multiple Listviews To Single Activity

Oct 29, 2010

I have been trying to get a specific layout for more than two days now and really struck with it, what am trying to achieve is: To have a layout like the following

LISTVIEW A

VIEW

LISTVIEW B

VIEW

LISTVIEW C

(VIEWS are basically for headers) Can any one help to sort out this task?

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Android : Multiple SingleTasks Within A Single Application

Jul 1, 2010

I have 2 activities declared as singleTask in my application. The reason for this is, with standard mode, pressing "HOME" in one activity (say A) and launching another (say B), still shows activity A.

However, a new problem arises because of this.

A -> "HOME" -> B (Result : B, Expected Result: B) -> "BACK" -> (Result:A, Expected Result: Home Screen) Any ideas why?

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Android : Multiple Handlers In A Single Activity

May 13, 2010

I've more than one Handlers in an Activity. I create all the handlers in the onCreate() of the main activity. My understanding is the handleMessage() method of each handler will never be called at the same time because all messages are put in the same queue (the Activity thread MessageQueue). Therefore, they will be executed in the order in which are put into the Queue. They will also be executed in the main activity thread. Is this correct ? Code...

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Creating Database Search App

Mar 27, 2014

i have a church database which i want to create an App which contains all details in the database....with a search button to search the database...

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Android :: Display Multiple Activities In A Single Activity

Jun 12, 2010

I want to know if we can display multiple activities in a single activity using ActivityGroup.Can anyone please help me out with this?

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Android :: Want To Create Multiple Images In Single Image

Oct 12, 2010

i want to create a bitmap / image which has many images like "Collage" which has more then one images in a single picture. I have stored all my images in a grid view but now i want to create a single image from all those images. And even i want to make few images click able so what can be the road map to do this ? any sort of help / example will be helpful. search for a for collage image image in google . one can see what it is exactly.

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Android :: Aldiko Won't Import Multiple / Single Books

Oct 12, 2010

I have the motorola devour and the latest aldiko, i have imported one book before, and today i tried importing a few, both multiple at a time and one at a time and i could not get it to "find" any of the books, they were all converted to epub via calibre, and all placed in the import folder(in ebook) anyone know any solutions?

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