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  • Why is my Android app force closing when I try to check if an EditText has a double

    - by user336861
    Scanner scanner = new Scanner(lapsPerMile_st); if (!scanner.hasNextDouble()) { Context context = getApplicationContext(); String msg = "Please Enter Digits and Decmials Only"; int duration = Toast.LENGTH_LONG; Toast.makeText(context, msg, duration).show(); lapsPerMileEditText.setText(""); return; } else { //Edit box has only digits, Set data and display stats data.setLapsPerMile(Integer.parseInt(lapsPerMile_st)); lapsRunLabel.setVisibility(0); lapsRunTextView.setText(Integer.toString(data.getLapsRun())); milesRunLabel.setVisibility(0); milesRunTextView.setText(Double.toString(data.getLapsRun()/data.getLapsPerMile())); } <EditText android:id="@+id/mileCount" android:layout_width="100dp" android:layout_height="wrap_content" android:layout_marginTop="110dp" android:inputType="numberDecimal" android:maxLength="4" /> For some reason if I enter a non decimal number such as 3, or 5, it works fine but when I enter a floating point such as 3.4 or 5.8 it force closes. I cant seem to figure out whats going on. Any ideas? Thanks

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  • Using an embedded DB (SQLite / SQL Compact) for Message Passing within an app?

    - by wk1989
    Hello, Just out of curiosity, for applications that have a fairly complicated module tree, would something like sqlite/sql compact edition work well for message passing? So if I have modules containing data such as: \SubsystemA\SubSubSysB\ModuleB\ModuleDataC, \SubSystemB\SubSubSystemC\ModuleA\ModuleDataX Using traditional message passing/routing, you have to go through intermediate modules in order to pass a message to ModuleB to request say ModuleDataC. Instead of doing that, if we we simply store "\SubsystemA\SubSubSysB\ModuleB\ModuleDataC" in a sqlite database, getting that data is as simple as a sql query and needs no routing and passing stuff around. Has anyone done this before? Even if you haven't, do you foresee any issues & performance impact? The only concern I have right now would be the passing of custom types, e.g. if ModuleDataC is a custom data structure or a pointer, I'll need some way of storing the data structure into the DB or storing the pointer into the DB. Thanks, JW EDIT One usage case I haven't thought about is when you want to send a message from ModuleA to ModuleB to get ModuleB to do something rather than just getting/setting data. Is it possible to do this using an embedded DB? I believe callback from the DB would be needed, how feasible is this?

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  • How do I avoid a race condition in my Rails app?

    - by Cathal
    Hi, I have a really simple Rails application that allows users to register their attendance on a set of courses. The ActiveRecord models are as follows: class Course < ActiveRecord::Base has_many :scheduled_runs ... end class ScheduledRun < ActiveRecord::Base belongs_to :course has_many :attendances has_many :attendees, :through => :attendances ... end class Attendance < ActiveRecord::Base belongs_to :user belongs_to :scheduled_run, :counter_cache => true ... end class User < ActiveRecord::Base has_many :attendances has_many :registered_courses, :through => :attendances, :source => :scheduled_run end A ScheduledRun instance has a finite number of places available, and once the limit is reached, no more attendances can be accepted. def full? attendances_count == capacity end attendances_count is a counter cache column holding the number of attendance associations created for a particular ScheduledRun record. My problem is that I don't fully know the correct way to ensure that a race condition doesn't occur when 1 or more people attempt to register for the last available place on a course at the same time. My Attendance controller looks like this: class AttendancesController < ApplicationController before_filter :load_scheduled_run before_filter :load_user, :only => :create def new @user = User.new end def create unless @user.valid? render :action => 'new' end @attendance = @user.attendances.build(:scheduled_run_id => params[:scheduled_run_id]) if @attendance.save flash[:notice] = "Successfully created attendance." redirect_to root_url else render :action => 'new' end end protected def load_scheduled_run @run = ScheduledRun.find(params[:scheduled_run_id]) end def load_user @user = User.create_new_or_load_existing(params[:user]) end end As you can see, it doesn't take into account where the ScheduledRun instance has already reached capacity. Any help on this would be greatly appreciated.

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  • wav stopped working with AudioServices on my iPhone app?

    - by user157733
    I have a wav file that was working fine. It is played using the AudioServices methods. Suddenly it stopped working. The weird thing is if i change he wav file to a different one that works. Any idea what is going on? The non working sound is slightly longer (still <10seconds) but it was originally working so I just can't figure it out. Any suggestions of what to try would be most appreciated. Thanks :-)

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  • Java memory usage increases when App is used, but doesnt decrease when not being used.

    - by gren
    I have a java application that uses a lot of memory when used, but when the program is not being used, the memory usage doesnt go down. Is there a way to force Java to release this memory? Because this memory is not needed at that time, I can understand to reserve a small amount of memory, but Java just reserves all the memory it ever uses. It also reuses this memory later but there must be a way to force Java to release it when its not needed. System.gc is not working.

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  • How do you force a Linux process (Java webstart App) to stop locking a Filesystem (CD-ROM) WITHOUT k

    - by Blake
    In Linux (CentOS 5.4), how do you force a process to stop locking a file system without killing the process? I am trying to get my Java Webstart Application, running locally, to eject a CD. I do not have this problem if I am just browsing through the files using a JFileChooser, but once I read the contents of a file, I can no longer eject the CD...even after removing ALL references to any files. Hitting the eject button will give the error (Title - "Cannot Eject Volume"): "An application is preventing the volume 'volume name' from being ejected" Thus, my goal is to tell the process to stop targeting the CD-ROM in order to free it up. Thank you for any help or direction!! Attempted Fix: -running the commands: sudo umount -l /media/Volume_Name //-l Lazy Unmount forces the unmount sudo eject Problem: When a new CD is inserted, it is no longer mounted automatically probably because the process is still "targeting" it.

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  • How can I change a connection string, or other app settings, at test time in Visual Studio 2008?

    - by David
    I need to test a class library project in VS. This project, itself, does not have a web.config file, but the classes do on the web server to which it's deployed. I access these like this: ConfigurationManager.ConnectionStrings["stringname"].ConnectionString; Can I adjust these strings while running unit tests in VS? Should I have considered a different design method to avoid this problem?

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  • How to set the ReturnUrl for the Login link in MVC 3 app?

    - by user762196
    using System; using Microsoft.Practices.Unity; namespace <MyNameSpace> { public class UrlFactory { public static UrlFactory Current { get { return HttpApplicationUnityContext.Current.Resolve<UrlFactory>(); } } public string GetLoginUrl() { return String.Format("{0}/login?ReturnUrl={1}", MyConfig.BaseHttpUrl, <GET_PAGE_URL>); } } The user can be on any page on the site and click the Login link. But the ReturnUrl must always point to the exact page where he clicked it. I must take the user back to the page he clicked the login link. In my code above, how do I get the page url in <GET_PAGE_URL>? Thanks

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  • Is it possible to use System.Configuration, if there is no local app.config? And how to, if it is po

    - by Aen Sidhe
    Hello. I have a client apllication that run in very restricted area - it has no direct access to computer, where it is running. I don't want to invent another one System.Configuration system to configure my application. But there is no method in ConfigurationManager, that allows to load configuration from string or Stream. It seems to me that it's impossible to use a ConfigurationManager in this particular scenario, but may be (and I hope to) wrong?

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  • How to get a 3D picture in an iphone app?

    - by wolverine
    In an application, i saw that they used to display pictures of vehicles. But what was amazing was when we touch and swipe in that picture, it rotates in 3d way left and right. And from the front view we can rotate and get to see its back view also. It is a very good feature and i was trying to replicate it. But couldnt get an idea of how and where to start. My doubts are Whats the actual format of the thing, it surely isn't a picture. How do they get to rotate it? Could someone give me an idea where i should start or where I should look upon?

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  • Can I write a module/filter that gets fired before the web app get's run in Tomcat?

    - by Blankman
    Can I write a module/filter that gets put into the processing pipleline in Tomcat BEFORE the web application even gets run? Something that I could turn on/off for each web application that tomcat is handling. is this possible? So basically it would be a re-usable filter that hooks into the web pipeline that could alter the requests behavior or perform/modify the requests. One example would be to log all ip's, or redirect based on the url, block the request, etc.

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  • Inconsistent email formatting with inline css created using Javamail

    - by user1816183
    Okay, so I have a program that sends an email when it is finished running. I use inline css to format the email. This was working up until yesterday however now I am seeing different formats depending on which email account I view the email in. It coincides with an upgrade from Selenium 2.35.0 to 2.37.0 however I don't think this is my issue since I rolled back to 2.35.0 and it still happens. package tests; import java.util.Properties; import javax.mail.Message; import javax.mail.Session; import javax.mail.Transport; import javax.mail.internet.InternetAddress; import javax.mail.internet.MimeMessage; public class TESTTEST { public static void main(String[] args) throws Exception { Properties props = new Properties(); props.put("mail.smtp.host","xxx.xxx.xxx.xxx"); Session session = Session.getInstance(props); String emailFrom="[email protected]"; String emailTo1="[email protected]"; MimeMessage message = new MimeMessage(session); message.setSubject("Testing HTML Email"); message.setFrom(new InternetAddress(emailFrom)); String htmlBody = "<STYLE>body {font-family:sans-serif,arial,helvetica,sans-serif;font-size:9pt;}" +"TABLE {border-collapse:collapse;border:1px solid black;}" +"TH {background-color:grey;color:white;padding:5px;border:1px solid black;font-size:9pt;}" +"TD {padding:5px;border:1px solid black;font-size:9pt;}" +"H3 {font-size:12pt;}" +".PASSED {background-color:#00FF00}" +".FAILED {background-color:#FF0000}" +".SKIPPED {background-color:#DEDEDE}" +".ITALIC {font-style:italic}" +"</STYLE>" + "<TABLE><TR><TD CLASS=PASSED>FAIL</TD><TD STYLE=background-color:#FF0000>FAIL</TD></TR></TABLE>"; message.setContent(htmlBody, "text/html; charset=ISO-8859-1"); message.addRecipient(Message.RecipientType.TO,new InternetAddress(emailTo1)); Transport.send(message,message.getRecipients(Message.RecipientType.TO)); System.out.println(htmlBody); System.out.println("Email Sent"); } } When I view the email in Hotmail/Outlook.com, it looks fine In Gmail In Lotus Notes Anybody able to help?

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  • Detect if NSString contains a URL and generate a "link" to open inside the app a Safari View

    - by Cy
    I have am reading a twitter feed in my iPhone application and can do it correctly, but I'd like to evolve it in a way to detect if the whole NSString contains any URL or URLs and create a "link" that will open a UIWebView within the same application. Can you guide me on how to perform this task? -(void) setTextTwitter:(NSString *)text WithDate:(NSString*)date { [text retain]; [textTwitter release], textTwitter = nil; textTwitter = text; [date retain]; [dateTwitter release], dateTwitter = nil; dateTwitter = date; [self setNeedsDisplay]; }

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  • Why are there performance differences when a SQL function is called from .Net app vs when the same c

    - by Dan Snell
    We are having a problem in our test and dev environments with a function that runs quite slowly at times when called from an .Net Application. When we call this function directly from management studio it works fine. Here are the differences when they are profiled: From the Application: CPU: 906 Reads: 61853 Writes: 0 Duration: 926 From SSMS: CPU: 15 Reads: 11243 Writes: 0 Duration: 31 Now we have determined that when we recompile the function the performance returns to what we are expecting and the performance profile when run from the application matches that of what we get when we run it from SSMS. It will start slowing down again at what appear to random intervals. We have not seen this in prod but they may be in part because everything is recompiled there on a weekly basis. So what might cause this sort of behavior?

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  • Where best to instantiate and close a Silverlight-enabled WCF Service from the Silverlight app?

    - by Yttrium
    When using a Silverlight-enabled WCF service, where is the best place to instantiate the service and to call the CloseAsync() method? Should you say, instantiate an instance each time you need to make a call to the service, or is it better to just instantiate an instance as a variable of the UserControl that will be making the calls? Then, where is it better to call the CloseAsync method? Should you call it in each of the "someServiceCall_completed" event methods? Or, if created as a variable of the UserControl class, is there a single place to call it? Like a Dispose method, or something equivalent for the UserControl class. Thanks, Jeff

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  • My iPhone app ran fine in simulator but crashed in device (iPod touch 3.1.2) test, I got the followi

    - by Mickey Shine
    I was running myapp on an iPod touch and I noticed it missed some libraries. Is that the reason? [Session started at 2010-03-19 15:57:04 +0800.] GNU gdb 6.3.50-20050815 (Apple version gdb-1128) (Fri Dec 18 10:08:53 UTC 2009) Copyright 2004 Free Software Foundation, Inc. GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Type "show copying" to see the conditions. There is absolutely no warranty for GDB. Type "show warranty" for details. This GDB was configured as "--host=i386-apple-darwin --target=arm-apple-darwin".tty /dev/ttys007 Loading program into debugger… Program loaded. target remote-mobile /tmp/.XcodeGDBRemote-237-78 Switching to remote-macosx protocol mem 0x1000 0x3fffffff cache mem 0x40000000 0xffffffff none mem 0x00000000 0x0fff none run Running… [Switching to thread 11779] [Switching to thread 11779] sharedlibrary apply-load-rules all (gdb) continue warning: Unable to read symbols for "/Library/MobileSubstrate/MobileSubstrate.dylib" (file not found). 2010-03-19 15:57:18.892 myapp[2338:207] MS:Notice: Installing: com.yourcompany.myapp [myapp] (478.52) 2010-03-19 15:57:19.145 myapp[2338:207] MS:Notice: Loading: /Library/MobileSubstrate/DynamicLibraries/Backgrounder.dylib warning: Unable to read symbols for "/Library/MobileSubstrate/DynamicLibraries/Backgrounder.dylib" (file not found). warning: Unable to read symbols for "/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS3.1.2.sdk/usr/lib/libsubstrate.dylib" (file not found). MS:Warning: message not found [myappAppDelegate applicationWillResignActive:] MS:Warning: message not found [myappAppDelegate applicationDidBecomeActive:] 2010-03-19 15:57:19.550 myapp[2338:207] in FirstViewController 2010-03-19 15:57:20.344 myapp[2338:207] in load table view 2010-03-19 15:57:20.478 myapp[2338:207] in loading splash view 2010-03-19 15:57:22.793 myapp[2338:207] in set interface Program received signal: “0”. warning: check_safe_call: could not restore current frame

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  • Add my own RSS reader app on a http://feeds2.feedburner.com/exampleofname "subscribe feed using" lis

    - by user333647
    Hello everyone, I'm doing a RSS reader for a University Project. The feed urls have to be added by hand tipically with the copy/paste method, and I don't like this option because is poor for the users. My question is: can I do like in webpage http://feeds2.feedburner.com/microsiervos a list of web applications (Google Reader, Netvibes, etc.). There is a way to do so? I may have to create a firefox addon? I'm quite lost, I think... Thank you very very much, and sorry for my bad english but in this F***ing country that is Spain, there are lots of FIESTA and what you want but null english education... hehehe Byeeee!

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