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• Replace standard Android JSON parser for better performance?

  - by Eno

  I know that Android has a JSON parser baked in but I was wondering if it was worth using something that offered better performance (like Jackson - see http://jackson.codehaus.org/) ? Anybody tried that ?

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• Discrete seekbar in Android app?

  - by vee

  i would like to create a seekbar for an Android app that allows the user to select a value between -5 and 5 (which maps to "strongly disagree" and "strongly agree"). how do i make a seekbar with discrete values? or is there a better UI widget i could use for this? thanks.

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• vb classic coder to android how to transition?

  - by user366654

  Hi guys. I'm a VB/vba coder and would like to start android dev. Currently I'm learning Java from scratch and. Its quite tough. I've read about oop but never actually written any OO code. Java syntax is also quite foreign but I'm getting the hang of it. My question is, which is absolutely the best transition path for a vb old dog to writing for froyo?

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• Where can I get source code for apps on the andorid emulator?

  - by Kaustubh

  Hello, greetings. I have 2 question to put forward: I was very interested, even intrigued by the Maps application on the android emulator. Where can I get the source code for it? There is a Maps Editor on the Android Market, it cannot be downloaded to the emualtor. but again, where can I find the source code to that? Thank You, Kaustubh.

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• Android SQLite: nullColumnHack parameter in insert/replace methods

  - by poke

  The Android SDK has some convenience methods for manipulating data with SQLite. However both the insert and replace methods use some nullColumnHack parameter which usage I don't understand. The documentation explains it with the following, but what if a table has multiple columns that allow NULL? I really don't get it :/ SQL doesn't allow inserting a completely empty row, so if initialValues is empty this column [/row for replace] will explicitly be assigned a NULL value

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• Store and retrieve images from file system instead of database

  - by Karsten

  Hi I need a place to store images. My first thought was to use the database, but many seems to recommend using the filesystem. This seems to fit my case, but how do I implement it? The filenames need to be unique, how to do that. Should I use a guid? How to retrieve the files, should I go directly to the database using the filename, make a aspx page and passing either filename or primary key as a querystring and then read the file. What about client side caching, is that enabled when using a page like image.aspx?id=123 ? How do I delete the files, when the associated record is deleted? I guess there are many other things that I still haven't thought about. Links, samples and guidelines are very welcome!

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• Database entries existence depends on time / boolean value of a field changed automatically

  - by lisak

  Hey, I have this situation here. An auction system listing orders that are "active" (their deadline didn't occur yet) There is a lot of orders so it is better to have a field "active" instead of listing them based on time queries I'm not a database expert, just a user. What is the best way to implement this scenario ? Do I have to manually check the "deadLine" field and change "active" status every once in a while ? Is Mysql able to change the field automatically ? How demanding are queries of type "select orders where "deadline" has passed " Do I need to use TIMESTAMP (long data type of number of milisecond since UTC epoch time or DATETIME for the queries to the database to be more efficient ? Finally I have to move old order entries to a different backup table .

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• Android SDK on a 64-bit linux machine

  - by celil

  Is it possible to develop using the Android SDK on a 64-bit linux machine. The available SDK downloads seem to be just for 32-bit versions of Linux.

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• Android: retrieving all Drawable resources from Resources object

  - by Matt Huggins

  In my Android project, I want to loop through the entire collection of Drawable resources. Normally, you can only retrieve a specific resource via its ID using something like: InputStream is = Resources.getSystem().openRawResource(resourceId) However, I want to get all Drawable resources where I won't know their ID's beforehand. Is there a collection I can loop through or perhaps a way to get the list of resource ID's given the resources in my project? Or, is there a way for me in Java to extract all property values from the R.drawable static class?

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• Android - where's code for Genie widget?

  - by DroidIn.net

  I've been looking all over http://android.git.kernel.org for Genie Widget code but unfortunately there's no top level search and lot of GITs to go through. If someone can point me to the right location I would really appreciate it. The Genie Widget is also known as News & Weather

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• Database design - alternatives for Entity Attribute Value (EAV)

  - by Bob

  Hi, see http://stackoverflow.com/questions/695752/product-table-many-kinds-of-product-each-product-has-many-parameters for similar topic. My question: i want to design a database, that will be used for a production facility of different types of products where each product has its own (number of) parameters. because i want the serial numbers to be in one tabel for overview purposes i have a problem with these different paraeters . One solution could be EAV, but it has its downsides, certainly because we have +- 5 products with every product +- 20.000 serial numbers (records). it looks a bit overkill to me... I just don't know how one could design a database so that you have an attribute in a mastertable that says: 'hey, you could find details of this record in THAT detail-table". 'in a way that you qould easely query the results) currenty i am using Visual Basic & Acces 2007. but i'm going to Visual Basic & MySQL. thanks for your help. Bob

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• AndroidManifest from Jars

  - by Jeremy Edwards

  Is it possible to have an AndroidManifest.xml and or resource files in a Jar file and import that into a executable Android project? My goal is to provide styles, resources, and services from a jar library that can be accessed from a main android project for my common tools.

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• Roadmap for HTML5 features in WebKit for Android

  - by mobileopen

  I recently tried out the applicationCache / offline web apps on Android 2.1's WebKit and unfortunately it does not work exactly like on a webkit on the iPhone. I was wondering how I can easily see what features should be implemented and if there is something like a roadmap? Does that information somewhere exist?

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• Animate change of view background color in Android

  - by hgpc

  How do you animate the change of background color of a view in Android? For example: I have a view with a red background color. The background color of the view changes to blue. How can I do a smooth transition between colors?

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• Unable to connect to mysql database using tomcat6 on ubuntu

  - by Rakesh

  I am able to deploy the application on my local system.... connecting to the same remote database... however when I deploy the same war file on the ubuntu server I get the following exception javax.servlet.ServletException: Could not connect to wikipedia database... org.wikipedia.miner.service.WikipediaMinerServlet.init(WikipediaMinerServlet.java:81) sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) java.lang.reflect.Method.invoke(Method.java:616) org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:244) java.security.AccessController.doPrivileged(Native Method) javax.security.auth.Subject.doAsPrivileged(Subject.java:537) org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:276) org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:162) org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:115) org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286) org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845) org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583) org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447) java.lang.Thread.run(Thread.java:636) I have even placed the mysql connector jar under tomcat6 lib direcotry.... Please help

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• How to set android lock screen image

  - by robintw

  Hi, I'm just getting started with android programming, and want to see if there is a way to programmatically set the lock screen image. I've found various ways of setting the wallpaper in the API, but I can't seem to find the equivalent ways of setting the lock screen image. I've seen various posts saying that customising the lock screen by adding widgets or bits of applications is not possible, but surely there must be a way to set the image programmatically? Cheers, Robin

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• Examples for Android Launch modes

  - by Casebash

  I am finding it hard to understand the exact circumstances in which each the various launch modes would be used in Android. Could anyone provide me with some examples to help understand when the various modes are appropriate?

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• Android WebView Click Event Problem

  - by Shalini Singh

  i am using android web view and want to perform some action on it's click event but code is not working ,,, my code is giving bellow.... webView.setOnClickListener(new OnClickListener(){ public void onClick(View v) {` Log.d("web view","CLIKKKKKKKKKKKKKKKKK"); }});

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• Android quiz .....?

  - by user346665

  How to make android quiz? I will have question with 3 possible answers (radio buttons),next another question, another... etc How is the smartly to make? To have one view and dynamically to create controls or to have view for each question.

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• Android 2.2 - and exchange password policy enforcement

  - by Moshe

  Hi, In Android 2.2 site (link text it's written: Improved security with the addition of numeric pin or alpha-numeric password options to unlock device. Exchange administrators can enforce password policy across devices But while I'm using N1 with 2.2 and try to connect to my company exchange server it didn't enforce me to set a password, although connecting to the same server from Windows Mobile 6 device enforce this. I know that exchange server is configured to enforce password. Is there anything special the administrator need to do? Thank you, Moshe

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• Show milliseconds with Android Chronometer

  - by Matthew Steeples

  I'm looking for a way to make the Chronometer in Android (preferably 1.6 and upwards) show 10ths of a second while counting up. Is it possible to do this? If not, is there a free (and preferably open source) library that does the same? Failing that I'll write my own, but I'd rather use someone else's!

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• android calender delete event

  - by Faisal khan

  I am suing android calender. how can i remove calender's event using code ? is it possible ? for clarification i would like to mention that i don't want sync process or want to remove remove event using gdata api. Only want to remove local calender's event.

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• Android: TabHost

  - by paradroid666

  Hi, I have a question in regards to http://developer.android.com/resources/tutorials/views/hello-tabwidget.html Lots of issues are already discussed but this example only works for me if I in the onCreate() method do NOT use setContentView(R.layout.main); Why is that? What do I have to do if I want to mix a tab layout with other elements? Thanks. paradroid666

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• Need help with android WebView

  - by Jesse

  Hello, I am new to Android and java development. I create a WebView object in the OnCreate function. Now I need to be able to pass this same object to other functions in the code, such as the onOptionsItemSelected function. I currently have it where I just create a new WebView object in each function where I need it, but this slows down the code since it has to recreate it and such.

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• Class Generator for web services against Java/Android

  - by Jeremy Edwards

  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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