Android :: Database Access Across Tabs

Jul 22, 2010

I have four tabs (reports, review reports, map and settings). I have an sqlite database populated with report information. I wish to have the database accessible throughout the application. The reports tab successfully adds data to the database however using the same methodology crashes the application. The Android debugger points to the line where the database is called again.

In the reports tab the following code is used to launch the database...

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

In the onCreate() method of the Review Tab - Where I wish to review reports - I try to access to the database through the call calling the return report method

this.reportDatabase = new ReportDatabase(this);

However this fails to work. In the android debugger highlights that the problem belongs with the context being provided to it. I realise that the report database has already been accessed by the report tab and wonder if this is causing the issue. I am new to programming android, the application is designed to report on flamingos in Africa, any help would be greatly appreciated!

Following the suggestion of Seva Alekseyev I have adapted as follows...

I have adapted my ReportDatabase as...

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

using...

reportDatabase = ReportDatabase.open(this);

As the call in both the report and review tab. Unfortunately this doesn't seem to work, the debugger stops on the same method. The full ReportDatabase.java file is here...

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


This method returns a double array and probably shouldn't be this hacky...

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

With the error stack being...

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

Android :: Database Access Across Tabs


Android : Store Values Of Variables To Access On Other Tabs?

Jun 9, 2010

I'm kinda noob to android so please bear with me. I'm currently developing app which uses tabs. My question now is: how to store values of variables so I can access them on the other tabs? I want to create something similar to sessions in PHP where I can save variables on one page and access on the other.

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Android :: Access Progress Bar In Main-activity Containing Tabhost From One Of Tabs?

Nov 14, 2010

I am developing an android application where I have a main-activity that contains a progress bar and a tabhost. the tabhost has 3 tabs.How do I from a tab-activity access the progress bar in the main activity? I want to be able to start and stop the progress bar when things changes inside each tab ativity.

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Android :: Scrollable Tabs - Dolphin Browser When Using Multiple Tabs

Jun 19, 2010

I'm currently working on my first android application. I am using a tabbed layout for my application. I followed the tutorial for this on the dev guide and ran into a problem. The tutorial only used three tabs, but I have a need for more. As such, the tabs resize and bunch up. I was hoping someone could tell me how I can make them scroll, like in dolphin browser when using multiple tabs.

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Android :: TABS In 2.0 Vs 1.5 - Rounded Corners TABS

Feb 27, 2010

I simply use the tabwidget :

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

Why are my tabs so uggly in 2.0 (no more rounded corners as in 1.5/1.6) ?

ugly tabs here

=>

This was better

What should I do now to show "rounded corners" TABS to Nexus One (for exemple) users ;-) ?

Is it because of the following manifest lines :

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

I have to keep android:anyDensity="true" otherwise I've got a problem with re-sizing of the menus described here

As a separate question, my users can change the Locale within my app itself, I then "redraw" the menus using onPrepareOptionsMenu (Menu menu) to refresh the strings within the menu with the new language choosen by the user. Is there an equivalent for TABS (I have local strings within the Title of the TABS) or do I have to delete all the tabs and re-create them from scratch ?

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Android :: Tabs - MapView - Activities Within Tabs

Oct 19, 2009

We're in the process of writing an app that has 4 tabs: Map, People, Places, Events. The People, Places, and Events in the App show up as Icons on the map. By default the People, Places, and Events tabs each show a listview, custom rendered, displaying all the People, Places, and Events respectively.

Now, right now each of the tabs has as its content an Intent set to launch the corresponding activity. For instance, there is a MapTabActivity that extends MapActivity, a ShowPeopleListActivity that shows the people, and so on and so forth.

I see a lot of StackOverflow questions/answers saying that due to various limitations in the way the TabHost is setup, it's best NOT to use activities as the content of tabs. For instance, it's impossible to launch a new activity and have it take the place of the existing activity within a tab, whereas it's possible to switch out a View with a different view.

Now, I'm at a crossroads. We've (for better or worse) devoted a fair amount of time trying to get this app to work the way it's currently structured, with the Activities as the content of the tabs. When an icon corresponding to a Person, Place, or Event is clicked, it fires off a VIEW Intent on a URI corresponding to that object; this is picked up by an Activity that then shows the object. The same mechanism is at work both in the Map and in the individual lists. We really like the loose coupling this provides us; we just give a VIEW command and the URI to the person/place/event and it automatically brings us to the right activity. Granted, the activity that's launched covers up the tab view rather than appearing inside of that, but we were willing to live with this.

Here's an issue though: from the Show activity, we want to be able to go back to the map, centered at that person, place, or event. We can launch a new activity to show the map again, but now we have the map activity as the content of the tab, plus the show activity, plus the new map activity in the activity stack; given how resource intensive the map activity is, I'm guessing this is not the ideal way to go.

I guess my question is, is there a GOOD tutorial somewhere showing exactly how to do complex tasks with a TabHost? I've seen HelloTabWidget; I'm looking for something much more sophisticated than this. I'm worried that if we switch to the View based way of doing things, we'll have to do a LOT of housekeeping to intercept all the back events, try to switch out the views, etc., etc., as well as strongly coupling our program in a way we don't want.

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Android :: Tabs Layout - Tab Activity With 4 Tabs

Nov 11, 2010

I have an Tab Activity with 4 tabs. Each of tab is showing me the list view. Suppose i m on 4th tab and dragged the list view to the last position and after that i click on 3rd tab and again when i go to 4th tab it is not refreshing and showing me the last visible screen. Actually i want to show the list view again from 1st element. is tabs refresh automatically or we need to do it programmatic?

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Android :: Web Access To Database

Dec 7, 2009

I would like to ask you smart people if anyone has seen any documentation regarding web access to a database from within an Android application. I would like to create a (FREE) application where the users can share information (rants/complains) around the globe. Each user will be able to see a little globe in his phone with locations of other users and some specific information about them.

Architecturally, I am thinking "database in my GoDaddy host, exposing a web service", and the web service accessed from the Android application. But I see no documentation about accessing web services. I can also go XML, maybe, but I am not seeing what mechanisms exist in the Android for over-the-web XML access.

I have a feeling I am mis-understanding something big in the picture. Can someone point me to docs, or knows something about this topic? (the iPhone has a Lighter app where you can see people lighting around the globe. Mine is similar, but people would not be lighting, instead they will be "complaining/ranting").

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Android :: Access Database

May 26, 2010

I am working on a Android app and I have a dilemma. I have a list of Objects. I have to update each of these objects with a database. I have 2 methods:

Method 1:I can loop through the Objects. For each object I can connect to the server, update it, and then move on to the next Object, and so forth.

Method 2:I can store the Objects in a list, send the whole list to the server, update it on the server side, then return a list of updated objects.

My questions are:

Which method is faster?
Which method is easier on the phone's battery?

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Android :: Access SQL Database

Jul 14, 2010

I understand that to access a SQL database from Android I need to create a web service that will run on the SQL server and will process requests from the Android application, what I need to know is how to create this web service and how to access it from Android.

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Android :: Database Access

Jul 27, 2010

I'm using an sqlite database in my app.

I have this dbhelper class in a services class like so.

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

In my activity classes I access and keep this application as a local variable like so:

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

And my service call looks like this:

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

I've added these overrides in to try to get rid of my memory leaks.

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

But I can't get my memory leaks to stop.

How to rid myself of these memory leaks? These leaks are of the type:

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

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Android :: Access Of Database

Jun 18, 2010

I am new to android platform. I am testing one android phone application. I want to see the database entries for that.

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How To Access Database On PC By Android App

Feb 1, 2012

I have to make android app that received files from mobiles and save it on database in pc.

How to create database on pc that i can access it by android app?which technique is the best for this Bluetooth or Wifi or...between the mobiles?

which technique is the best for this Bluetooth or Wifi or...between mobile and pc?

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Android :: Database Access / How To Close It

Aug 2, 2010

I am creating an android app that is basically a listing of information on Mushrooms. I get this information from an sqlite database. I have a global singleton with a services class inside it in which I use to access my db. Almost every activity accesses the db. Is it better to leave my db open all the time or open and close it as I need the data? If the best practice is to leave it open all the time, where do I need to make sure to close it and what is the worst case scenario if I left it open when the activity was destroyed?

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Android :: Access Data In An ASP.NET Database Via App

Jul 22, 2010

I have a Windows web server already set up with a website (unlimited application pools) and I want to be able to access a database on that server via the Android app I'm developing. How can I do this? Can someone point me to a tutorial or give code example of how this cross-platform (Android/Java to ASP.NET/C#) communication can be done? (I'm trying to create a leader board or global scoreboard for my Android game on my server.)

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Android :: Access Database In BroadcastReceiver?

Dec 12, 2009

I have a problem when using database in broadcastReceiver.

I can't open the database created in the activity. e.g: malwareDB = new PackageDB(this);

The eclipse give me the error that "PackageDB(this)" is undefined.

It seems that the BroadcastReceiver doesn't support the database?

Do have have to access the data base in the "service"?

Here is the definition of "PackageDB":

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

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Android : How To Access Distant Database From App?

Jan 16, 2010

I'd like to access an Internet database from my app to edit it and read it. Any link I should read or any advise?

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Android :: Access A Database Server Directly

Sep 6, 2010

Is there any way to access the a database server directly in Android? If not, why? Also, are there any external tools for this?

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Android :: Access The My Web Application Database In Emulator

Feb 11, 2010

How to access my web application database in android emulator, i want list out my database values. These are in my web application. database name employees and table: employee_data. i want to get employee_data data on android emulator.

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Android :: Access A Sqlite Database That Is Not Own By My Application

Jan 31, 2010

I'm searching information about how i can access a specific database that to not belong to me, and that is store in /data/data/com.... directory is it possible without root access? it it possible with root access, and how?

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Android :: Data Passing And Database Access

Sep 23, 2009

I am experiencing a problem where when the android device wake up from sleep, the Activity would take forever to get redrawn(and have to terminate it most of the time). I am not sure why, but when I comment out the code below where it retrieves an object from the database based on id stored in the bundle, the problem goes away.

Not sure why the db transaction is causing an issue.

secondly, is it better to store the object in bundle instead of storing its id and retrieving it from db in onCreate?

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

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Android :: Access Path Of Database Or File Of Different App

Aug 13, 2010

Is it possible to get path of database file in android at path : "/data/system/accounts.db"

In my app i want to use this database, but not getting its path. if i do hardcoding and remove the file i'm able to do it. But i want to access it as database so that i can drop the table.

code i tried:

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

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Android :: Database Access Design Approach

Aug 30, 2010

I have a general Android design question around data access. I have a number of activities in my application that need to access a SQLite database. In order to wrap up all data access logic in one place I have created a DatbaseHandler class that takes care of all data access logic. This class takes care of building up where clauses, calling the database and interrogating the resulting cursor to retrieve the query results and return them to the caller. The purpose of this class is to wrap all data access code in one place so that it can be easily managed and maintained as opposed to having data access logic scattered across all activities. Each activity that needs access to the database creates an instance of this DatabaseHandler class and passes it a reference of android.content.Context. The DatabaseHandler class then uses this Context object to call an underlying content provider as follows context_i.getContentResolver().query(...).

My data access logic (cursor handling logic to be specific) is not in the activity and so I cannot manage the cursors life cycle, therefore there is likely to be memory leaks.

My questions are as follows -

How can I (if its even possible) manage the cursors life cycle from outside an Activity? Should each activity even be creating an instance of this data handler class and passing an instance of Context to it? Perhaps my design approach is wrong and I should expose these data access functions as static methods that take an instance of the calling activity as a parameter. That way I could perform managed queries and let the activity take care of managing the cursors life cycle?

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Android :: Prevent Access To SQLite Database

Oct 18, 2010

I use a sqlite database in my project. The stored data in it must not be available for the user to edit. As I've read here I saw that if you have root access you can alter sqlite database. The only solution would be to encrypt database content, but this would be time consuming for device. Any solution to prevent access to database ?

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Android :: Allow To Access - Modify A Remote Database

Oct 30, 2010

I'm running a .net aspx application. I'll need my android app to access and modify/insert information into the ms sql database. is there any api ?

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Android :: How To Access / Manipulate A Web Based Database?

Jul 18, 2010

I am quite familiar with web programming (HTML, PHP, MySQL) and semi-familiar with Android Java programming, and would like to begin a project that combines the two together. Can someone point me into the right direction for how I would access/manipulate a web-based MySQL database from an android app?

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Android :: How To Access Database From Command Line?

Sep 28, 2010

I am new to the development, i have created a database and i have inserted values using eclipse code and i have successes on that But i want to see where this database exists, i have checked on tools directory from command prompt and if i query the table using select , it is saying that no table exists, Can anyone please tell me that how to access database from command line?

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Android :: How To Access The Database When Developing On A Phone

May 11, 2010

I am having trouble accessing the database while I am developing on the phone. Whenever I execute

cd /data/data/com.mycompck/databases

then if I try to run ls I get opendir failed, Permission denied

Or whenever I type in:
sqlite3 I get sqlite3: permission denied

What I am doing wrong?

Are there some applications that can help me getting a human view of content resolvers values and/or SQLite databases?

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Android : Way To Access Database On Server Side?

Mar 18, 2010

I'm having a problem in accessing a database on remote server from my android application. In some blogs i found that by using Webservices we can do it. but i dont know what are webservices? Can any one help me how do i do that?

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Android : Way To Access An Sqlite Database In Droid?

Dec 23, 2009

So far we have developed apps in android that create database on runtime. We like to know how can we access a pre-built or existing database/sqlite file in our android app?

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