Android :: Way To Achieve Listview From Multiple Tables?
Aug 22, 2010I'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, 2010I 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 :)
View 2 Replies View RelatedAndroid : Multiple Tables In One ContentProvider
Oct 6, 2009I 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?
Android : Achieve Mixed Layout With ListView?
Apr 19, 2010Things go fine, and i am able to design a layout like this...
View 3 Replies View RelatedAndroid : Creating Multiple Tables In A Single Database?
Feb 22, 2010How to create two or more tables in one database in single class which extends sqliteopenhelper in one function oncreate.
View 2 Replies View RelatedAndroid :: Create Multiple Threads To Achieve Ftp Download And Display In Imageview?
Jun 30, 2010The following code executes a function that retrieves a file via ftp and then displays it in an imageview. Since I'm using the main thread the UI locks up, somebody tells me I can use asynctask to make this work but I can't figure it out :<
Is anybody familiar with this that could offer me some guidance? code...
Android :: Android ContentProvider Database Query Multiple Tables
May 7, 2010I'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?
Android :: How To Achieve Multiple Screen Sizes In Android 1.5
Mar 1, 2010i am developing a game and i need to use android1.5 only.
i wrote sample application using 1.6 and kept drawable-hdpi,-ldpi ... and application is working fine in emulator of 1.6. i made apk and opened an emulator (android 1.5) from command prompt application is also working fine.
in 1.6 if i change emulator resolutions the application UI is resizing. but in 1.5 emulators not.
is that mean, the application developed in android 1.6 runs in 1.5 emulator but multi screen support is not achieved?
..."how to achieve multiple screen sizes in android 1.5". multiple screen support is available from 1.6.
Android :: Multiple Views For For Row In ListView
Jan 17, 2010I have a ListView that could have 4 different views for a row depending on the data for the row. I have the ListView working correctly overriding getViewTypeCount and getItemViewTYpe. I originally was trying to dynamiclly update the view type count as new views were inflated by forcing calls to getViewTypeCount because it was possible that maybe one or two views may be all that would be needed. The app never functioned correctly crashing after there was more than one view added. The problem was fixed by setting getViewTypeCount to always return 4. I noticed getViewTypeCount is automatically called on app start-up and never called again unless a force call is made. So I'm just curious if this can be changed dynamically or do you need to know the number of max views you can possibly have and override getViewTypeCount to return that max value.
View 1 Replies View RelatedAndroid :: Way To Add Multiple Views To A Listview?
Jun 15, 2010I tried to add these views to list view using this kind of factory but everytime I try and add the view to a ListActivity, it comes up with nothing. What am I doing wrong?
View 3 Replies View RelatedAndroid :: How To Handle Multiple Adapters For One ListView?
Jul 6, 2009Currently I'm trying to find an efficient way to handle the following scenario. Please comment on my current implementations and all feedback is greatly appreciated! I have about 7 adapters with data. This data comes from database and some come from xml queries over the internet which are kept static in memory. In my current implementation I re-use one ListView constantly to display this data as requested by the user. Here are the questions: 1. Is this a proper approach? or should I have a ListView for every Adapter?
View 9 Replies View RelatedAndroid :: Want To Select Multiple Items In ListView?
Apr 23, 2010I have a ListView and I want to select multiple items in the ListView without using CheckedTextView.
View 2 Replies View RelatedAndroid :: Multiple Intents In A ListView Populated Via Subclass
Jun 2, 2010I have a ListActivity which is being filled via an internal class "OrderAdapter" - while the list is being populated I set various OnClickListeners on the TextView elements which should open the same view with different parameter values per line. My problem I have is that no matter which entry in the list I click I will always get to a view with the same parameter ID (it's always the ID of the last line in the list) - even though the output of the ID varies if I output it to the TextView.
Here is the code of the internal class which populates the list in the ListActivity:
CODE:.............
Any ideas why it always opens the view with the same ID even though the TextView "tvCheatTitle" displays a different value in every line?
Android :: How To Select Multiple Item In ListView In Phone?
Sep 1, 2009How to select multiple item in ListView in android.?
View 3 Replies View RelatedAndroid :: Listview Item Color - Multiple Selection
Mar 8, 2010My list view is a multiple selection list view. i have to show the selected list view items in one color(say green) and the other items in some other color(red). How to achieve this?
View 3 Replies View RelatedAndroid :: Listview / Arrayadapter With Rows Containing Multiple Text Views?
May 27, 2009I want to create a listview with rows that have an image and two textviews. This must be a very common activity but I can't find a class/or source code that does this.
View 9 Replies View RelatedAndroid :: Cursor Adapter - Binding Multiple Item Values In ListView
Jan 12, 2010I have the following code to intantiate a SimpleCursorAdapter to use with a ListView. As you can see I have passed the R.layout.log_item to display the list items, and one value/control to bind to (TripDate).
SimpleCursorAdapter sca = new SimpleCursorAdapter(this, R.layout.log_item,c,new String[] {DBAdapter.KEY_LOG_TRIPDATE},new int[]{R.id.txtTripDate});
This works. I currently only have one widget in the layout xml, a TextView to hold the TripDate.
How do I pass multiple binding parameters for the additional widgets in the layout? So I can also display other info.
Android :: Achieve Folder By Polling?
Jul 11, 2010Is it possible to do polling in Android? For example, I want my application to monitor a directory continuously. If there is for example a new folder created in that directory I want to log it down. Is it possible to acheive this by polling? Or is there any other way to do this?
View 7 Replies View RelatedAndroid :: Query Two Tables In One Statement?
Sep 27, 2010I'm trying to reduce the number of queries I do to the Android's database. Basically I want to get any email or IM address that contains a user defined search term. Right now I'm doing two separate queries:
Email:...............
Android :: Using SQLiteQueryBuilder To Join Two Tables?
Nov 20, 2010I'm trying to use Android SDK's SQLiteQueryBuilder to join two tables, let's call them t1 and t2, and query that table based on an attribute from each table, say t1.att1 and t2.att2, equaling a certain value. I'm a little confused on the syntax when it comes to the selection.
View 1 Replies View RelatedAndroid :: SQL Syntax To Combine Several Tables
Feb 28, 2010I need to display a single list, ordered by date which contains different types of data, images, video and whatnot.
I guess you could have one separate table for each type and the use something like FULL OUTER JOIN (simulated as sqlite doesn't support it) and sort on date. But this would be complicated because I still need to have unique IDs across all tables.
Maybe having a master list which has ID and date, and then JOIN in the types tables? But how bad is the performance of this using sqlite? I really like to avoid having a super table which contains columns all the combined types could ever need.
Android :: Create Database With Two Tables?
Jul 30, 2009I 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...
Android : How To Create Dynamic Tables?
Sep 4, 2010Does anyone of you know how to create dynamic Tablelayouts? On my Emulator Android just shows nothing.
View 2 Replies View RelatedAndroid :: Web View User Clicks On Particular Url - How Can I Achieve This?
Jun 24, 2009I have a webview and need to trigger a function when a user clicks on particular url. How can I achieve this?
View 5 Replies View RelatedAndroid :: Application-wide Resources / How To Achieve?
Sep 17, 2010So I'm struggling a bit with what is probably a fairly basic concept.. Activity Lifecycle.I have read a bunch of thread on the topic, and I feel I understand well both the functionality, and rationale behind the lifecycle model implemented for Activities, but it raises a bit of a problem for me. My app (game) has a couple of distinct Activities for various sections:
1. The TitleActivity is a very small Activity that just launches a GLSurfaceView and renders a startup logo.I use this to detect the OpenGL capabilities of the device (eg so I know if it's using a software renderer)
2. The LaunchActivity is the main menu screen where the user can access options etc and start a game
3. The GameActivity will either launches a GLSurfaceView or a standard View depending on hardware capabilties.
The issue I am having is that I want to pre-load some "slow-to-load" resources, specifically audio, in the Title Activity so when the Launch Activity renders I can play some background music.I have the concept of a "media library" which I use throughout the game.Because of memory limitations in the SoundPool, I have limited this to only absolute real-time sounds and all others are played using mulitple instances of MediaPlayer.Hence my media library has a bunch of pre-loaded MediaPlayer instances which I access regularly during game play.. so it makes sense to have a centralized access point for all audio.All fine, however the problem is that when I launch one activity from another.. for example the TitleActivity starts the LaunchActivity (via a call to startActivity(Intent...)), the former goes through the onDestroy stage of its lifecycle.Now logically I had assumed that if I allocate a bunch of resources in the onCreate of an Activity, I should clean them up in the onDestroy, however in the case of my "media library" if I load up the audio files in the onCreate of my TitleActivity they will be torn down when the LaunchActivity is started because the TitleActivity will have its onDestroy() method called.
Android :: Obtain Endless Views / Can I Achieve
Oct 26, 2009I am developing an application in which a user keeps on scrolling and each view displays a single text. The views are not suppose to end. How can i achieve that?
View 4 Replies View RelatedAndroid :: Achieve Droid Project's Internationalization?
May 28, 2009I want to make my android project Internationalization,but i don't know how to achieve it. I have searched on the internet,and just know i have to make values-xx file in
es.I want to know what should i do about the code.
Android : How To Achieve Logging Inside Framework?
Oct 8, 2010I am trying to develop small application for reset Logging on Phone. Can some one throw some Lights on how to achieve logging in AndriodRunTimeInit whenever there is exception? I want to write into file whenever there is RunTime exception.
View 1 Replies View RelatedAndroid : Achieve Perspective Drawing Of An Image
Jul 15, 2009Is there any way to achieve perspective drawing of an image.. are there any APIs.. or is OpenGL the only solution..
View 2 Replies View RelatedAndroid :: View Tables Created In Database
Oct 6, 2010I 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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