Search Results

Search found 6791 results on 272 pages for 'touch typing'.

Page 246/272 | < Previous Page | 242 243 244 245 246 247 248 249 250 251 252 253  | Next Page >

• Should I base my Embedded Linux product on Qt?

  - by Udi

  My company is developing a medical product. One of the components is a pda-like platform that will run embedded linux. We were considering Qt as the UI framework but found out that Qt is a lot more than that (we are not familiar with Qt). In general, the device needs to do the following: 1. Receive measurements over USB HID from another device (USB HID is used for convenience). 2. Process the measurements. 3. Store them in a database. 4. Interact with the user using the device's touch screen lcd. 5. Communicate (wi-fi, tcp-ip) with a central management station that collects the data and configures the device. 6. Include a web server to allow accessing the device via a browser. We intend to program in C++. My questions are: 1. Is that a good choice for such a device? 2. Assuming we choose Qt, how do we build our product? - Do we use Qt just as a GUI framework and write the application code in a separate process (passing messages between Qt and the application process)? - Do we write the entire application inside Qt, using all of the services the tool has to offer? - Another approach?

  Read the article

• Git is not using the first editor in my $PATH

  - by GuillaumeA

  I am using OS X 10.8, and I used brew to install a more recent version of emacs than the one shipped with OS X. The newer emacs binary is installed in /usr/local/bin (24.2.1), and the old "shipped-with-osx" one in /usr/bin (22.1.1). I updated my $PATH env variable by prepending /usr/local/bin to it. It works fine in my shell (ie. typing emacs runs the 24.2.1 version), but when git opens the editor, the emacs version is 22.1.1. Isn't git supposed to use $PATH to find the editor I want to use ? Additional informations: $ type -a emacs emacs is /usr/local/bin/emacs emacs is /usr/bin/emacs emacs is /usr/local/bin/emacs $ env PATH=/usr/local/bin:/usr/local/sbin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin SHELL=/bin/zsh PAGER=most EDITOR=emacs -nw _=/usr/bin/env Please note that I'd prefer not to set the absolute path of my editor directly in my git conf, as I use this conf across multiple systems. EDIT: Here's an bit of my .zshrc: # Mac OS X if [ `uname` = "Darwin" ]; then # Brew binaries PATH="/usr/local/bin":"/usr/local/sbin":$PATH else # Everyone else (Linux) # snip fi So, yes, I could add a line export EDITOR='/usr/local/bin emacs -nw' in the first if, but I'd like to understand why git is not using my PATH variable :)

  Read the article

• OpenGL ES and real world development

  - by Mark

  Hi Guys, I'm trying to learn OpenGL ES quickly (I know, I know, but these are the pressures that have been thrusted upon me) and I have been read around a fair bit, which lots of success at rendering basic models, some basic lighting and 'some' texturing success too. But this is CONSTANTLY the point at which all OpenGL ES tutorials end, they never say more of what a real life app may need. So I have a few questions that Im hoping arent too difficult. How do people get 3d models from their favorite 3d modeling tool into the iPhone/iPad application? I have seen a couple of blog posts where people have written some python scripts for tools like Blender which create .h files that you can use, is this what people seem to do everytime? Or do the "big" tooling suites (3DS, Maya, etc...) have exporting features? Say I have my model in a nice .h file, all the vertexes, texture points, etc.. are lined up, how to I make my model (say of a basic person) walk? Or to be more general, how do you animate "part" of a model (legs only, turn head, etc...)? Do they need to be a massive mash-up of many different tiny models, or can you pre-bake animations these days "into" models (somehow) Truely great 3D games for the iPhone are (im sure) unbelievably complex, but how do people (game dev firms) seem to manage that designer/developer workflow? Surely not all the animations, textures, etc... are done programatically. I hope these are not stupid questions, and in actual fact, my app that Im trying to investigate how to make is really quite simple, just a basic 3D model that I want to be able to pan/tilt around using touch. Has anyone ever done/seen anything like this that I might be able to read up on? Thanks for any help you can give, I appreciate all types of response big or small :) Cheers, Mark

  Read the article

• How to get an embedded function to run multiple times

  - by Guy Montag

  The question I have is how to I get multiple instances of a function to run. Here is my function below - A simple fade function. Problem I'm having is that when it is called a second time it abandons the first call. So if a user clicks on a button it will display a message which fades. If the user clicks on another button the previous fading message just stops at the current opacity level. Try it here - www.arcmarks.com ( please do not repost this domain name) click on SignUp and than quickly click on SignIn with out typing anything. You will see the previous message simply halts. ? What is the stopping mechanism? Where did the previous function go? The function function newEffects(element, direction, max_time ) { newEffects.arrayHold = []; newEffects.arrayHold[element.id] = 0; function next() { newEffects.arrayHold[element.id] += 10; if ( direction === 'up' ) { element.style.opacity = newEffects.arrayHold[element.id] / max_time; } else if ( direction === 'down' ) { element.style.opacity = ( max_time - newEffects.arrayHold[element.id] ) / max_time; } if ( newEffects.arrayHold[element.id] <= max_time ) { setTimeout( next, 10 ); } } next(); return true; }; The Call newEffects(this.element, 'down', 4000 );

  Read the article

• File/Property rename problem in Visual Studio and Explorer

  - by user211377

  I am running Windows 7. In Visual Studio, if I try to rename a file by right-click/rename, it behaves as normal for a couple of seconds, then switches out of edit mode. A similar problem occurs when I try to change a property, for example the name of a control. When I click in the property value, I can start editing, but then it assumes the edit is complete, and if I continue typing it overwrites the text. It does this every couple of seconds, so, for example, if I want to name a control mnuFile, I might get mn, then uFi, then le. S, the control ends upgetting called whatever I typed in the last 2-3 characters. I have the same problem with file rename in Explorer. Looks to me as though some timeout is kicking in and terminating the edit. Well, I was going to try a 'Repair install', but that's not an option in Windows 7! So, I went through the re-install, up to the point where I thought is was going to trash my install, and then cancelled it! By some miracle, that has fixed the problem!#Thanks for the advice about ShellExView, I'll try that next time it happens. Thanks for the answers guys! In my view it is more a Visual Studio issue, since it affects both file renames and properties in VS. In Explorer it only affects file rename, which is (just slightly) less annoying!

  Read the article

• cannot eliminate space between 2 horizontal divs inside containing div

  - by wantTheBest

  Should be easy, right? Just set the outer containing div's padding to zero, and set the two side-by-side divs inside the outer div to have margin:0 but that's having no effect on the space between the 2 horizontal divs. What I need is the red-outlined left div to touch the green-outlined right-side div. Despite my effort using padding and margin, the space between the 2 divs will not go away. I have looked at many answers on SO but so far no one's broken it down to this simple example -- my fiddle shows this issue, at http://jsfiddle.net/Shomer/tLZrm/7/ And here is the very simple code: <div style="border: 4px solid blue; white-space:nowrap; margin:0; padding:0; width:80%"> <div style="display:inline-block; width:45%; overflow:hidden; margin:0; border: 1px solid red"> Flimmy-flammy </div> <div style="display:inline-block; width:50%; overflow:hidden; margin:0px; border: 1px solid green"> Hambone-Sammy </div> </div>

  Read the article

• Debugging instance of another thread altering my data

  - by Mick

  I have a huge global array of structures. Some regions of the array are tied to individual threads and those threads can modify their regions of the array without having to use critical sections. But there is one special region of the array which all threads may have access to. The code that accesses these parts of the array needs to carefully use critical sections (each array element has its own critical section) to prevent any possibility of two threads writing to the structure simultaneously. Now I have a mysterious bug I am trying to chase, it is occurring unpredictably and very infrequently. It seems that one of the structures is being filled with some incorrect number. One obvious explanation is that another thread has accidentally been allowed to set this number when it should be excluded from doing so. Unfortunately it seems close to impossible to track this bug. The array element in which the bad data appears is different each time. What I would love to be able to do is set some kind of trap for the bug as follows: I would enter a critical section for array element N, then I know that no other thread should be able to touch the data, then (until I exit the critical section) set some kind of flag to a debugging tool saying "if any other thread attempts to change the data here please break and show me the offending patch of source code"... but I suspect no such tool exists... or does it? Or is there some completely different debugging methodology that I should be employing.

  Read the article

• Rails: updating an association

  - by Sam

  I have a Reservation model which belongs_to a Sharedorder and so a Sharedorder has_many reservations. Give you a little background. I sharedorder has many reservations and each reservation can have an amount. A sharedorder has three status: 1) reserved, 2) confirmed, 3) and purchased. Here is my problem. When a reservation gets added to a sharedorder or an existing reservation's amount is updated I need this to affect the associated sharedoder because the status listed latter should only change when 100% of the reservations have been placed and so on. Here are the things I have tried: . class Reservation < ActiveRecord::Base before_save :sharedorder_reserved_status def sharedorder_reserved_status if self.sharedorder.reserved_percent(reservations_to_be_added) >= 100 && !self.sharedorder.reserved self.sharedorder.update_attribute(:reserved, true) self.sharedorder.update_attribute(:reserved_at, Time.now) end end def reservations_to_be_added if self.new_record? self.amount elsif self.amount_changed? self.amount - self.amount_was else 0 end end end And then in the Sharedorder model: class Sharedorder < ActiveRecord::Base def reserved_percent(amount_change) (((reserved_sum + amount_change).to_f / self.product.twenty_hq_size.to_f)*100).to_i end def reserved_sum if !@reserved_sum reserved_sum = 0 reserved_reservations.collect {|x| reserved_sum += x.amount } reserved_sum else @reserved_sum end end def reserved_reservations @reserved_reservations ||= Reservation.find(:all, :conditions => ['canceled = ? AND sharedorder_id = ?', false, self.id ]) end end I have also tried :touch => true on the reservation model to update the sharedorder put for some reason it doesn't seem to include the latest reservation being added or being updated. So what I'm trying to do is update the status of the sharedorder if a certain percent is reached and I have to send the additional amounts the the sharedorder for it to know to include additional reservations or updates on existing ones. How should I do this?

  Read the article

• Xcode Code Sense horribly broken?

  - by Philippe Leybaert

  Ever since I started using Xcode, I've experienced extremely annoying problems using Xcode and Code Sense. The problem is that when Code Sense kicks in for code completion, sometimes the source code text below the line I'm working on goes "crazy". If I continue typing, the problem gets worse, and after a while the source code is completely screwed up (funny colors, missing lines and characters, ...). Strange enough, the source code itself is unaffected, because when I select another source file and then go back to the one I was working on, everything looks fine again. The problem can be seen in this screencast: http://www.screencast.com/t/OGY3NWE5 Interesting facts: This problem has occurred on 3 different machines, so it's not related to a corrupt installation. Sometimes it's fine for a while (up to one hour) after launching Xcode, but once it starts happening, it's getting worse and worse, until Xcode is restarted. Then it's fine again (for a while) I've searched the web for similar experiences, and I can't find anything. I would think that it is a known problem, since it occurs on 3 different Macs here (both running 10.5 and 10.6). Anyone having the same problems? Or a suggestion for fixing this?

  Read the article

• How to accommodate for the different screen resolution of iPhone 4?

  - by mystify

  This is a programming question! Read on before you vote to close! According to Apple, iPhone 4 has a new screen resolution: 3.5-inch (diagonal) widescreen Multi-Touch display 960-by-640-pixel resolution at 326 ppi This little detail affects our apps in a heavy way. Most of the demo apps on the net have one thing in common: They position views in the believe that the screen has a fixed size of 320 x 480 pixels. So what most -if not all- developers do is: They designed everything in such a way, that a touchable area is -for example- 50 x 50 pixels big. Just enough to tap it. Things have been positioned relative to the upper left, to reach a specific position on screen - let's say the center, or somewhere at the bottom. Edit: It seems Apple has integrated an switch that allows to tell if an app is highRes or not. Nice. When we develop high-resolution apps, probably they won't work on older devices. And if they did, they would suffer a lot from 4-times the size of any image, having to scale them down in memory. This is community wiki. Just add anything that you think is relevant to this huge problem (constant screen res was one of the main reasons why I didn't go for Android!!).

  Read the article

• Increment the number of times an article has been read

  - by r.sendecky

  I have a situation where I need to increase the number of time article has been read. Once someone opens an article it should be reflected in the database by incrementing number of reads by one. Simple. Sending POST request to the server increments the number of reads by one. The article in question is supplied via URL parameter. Doing it manually by typing the URL in a browser works as expected. So server side is not at fault. My problems start with the javascript side of it or rather jquery. I hook the event to the article link. So every time a user clicks on the article link it increments the number of reads like so: $('#list-articles .article-link').click(function(e){ var oid = $(this).parent().parent().attr('data-oid').toString(); //Get the article id $.post( "/articles/viewed/" + oid ); }); Now this does not work! Number is not increased. I don't prevent default action since I need the link to actually open and display the article. Now if I put an alert right after the post like this: $('#list-articles .article-link').click(function(e){ var oid = $(this).parent().parent().attr('data-oid').toString(); //Get the article id $.post( "/articles/viewed/" + oid ); alert(oid); }); This variant works. After I dismiss the alert window, the number is incremented. Why is this so?? How can I fix this to actually work without the alert event present?

  Read the article

• Want to mimic iphone address book search (In terms of interface & interaction)

  - by mr-sk

  Hi, When you do a search in the address book the flow is: 1) Select the search bar 2) The right most transparent a-z index is removed 3) A transparent black window is placed over the current UITableView 4) When you begin typing, a new UITableView is loaded with no data 5) The UITableView is populated with data as you type. 6) If you select an item you are brought to it 7) If you cancel the search you return to the main UITalbeView My first real question is, how do I load a new UITableView when a user begins searching? Is it as easy as popping a new view on the stack? It would then be a seperate .m/.h file with its own implementation? The second question is how do you remove the right most index? Or just that just go away when you render the new (blank) UITableView? I've gotten search working, but mine does it in the same UITableView, which when you start contains like 2K results, is grouped (A results under A Heading, etc) and has a right most index. I'd be happy leaving the results in the table, if I could; 1) Remove the rightmost a-z index 2) Drop the table groupings 3) Tell the view I only have N search results so it will build the scroll bar correctly. Thanks for your input; sk

  Read the article

• Best practice to hide/encrypt email adress in webpage

  - by Sebi

  I couldn't find a similar question, that's why here it is: Whats the best way to hide or encrypt an email link in a website, so that a crawler can't read it, but the user can nevertheless click it? I don't want to conufse the users by typing the email like this: john (at) mail.com or similar ways. (and i think this kind of links can nevertheless read by crawlers?) I also tried things like that: <script>// <![CDATA[eval(unescape('%76%61%72%20%73%3D%27%61%6D%6C%69%6F%74%72%3A%62%61%40%65%64%61%6E%6F%6C%2E%69%27%3B%76%61%72%20%72%3D%27%27%3B%66%6F%72%28%76%61%72%20%69%3D%30%3B%69%3C%73%2E%6C%65%6E%67%74%68%3B%69%2B%2B%2C%69%2B%2B%29%7B%72%3D%72%2B%73%2E%73%75%62%73%74%72%69%6E%67%28%69%2B%31%2C%69%2B%32%29%2B%73%2E%73%75%62%73%74%72%69%6E%67%28%69%2C%69%2B%31%29%7D%64%6F%63%75%6D%65%6E%74%2E%77%72%69%74%65%28%27%3C%61%20%68%72%65%66%3D%22%27%2B%72%2B%27%22%3E%4F%62%65%72%70%61%72%6C%65%69%74%65%72%3C%2F%61%3E%27%29%3B'))]]></script> but i heard this can also be read by crawler and it isn't really good practices are ther any common approaches?

  Read the article

• How can I make VS2010 insert using statements in the order dictated by StyleCop rules.

  - by Hamish Grubijan

  The related default StyleCop rules are: Place using statements inside namespace. Sort using statements alphabetically. But ... System using come first (still trying to figure out if that means just using System; or using System[.*];). So, my use case: I find a bug and decide that I need to at least add an intelligible Assert to make debugging less painful for the next guy. So I start typing Debug.Assert( and intellisense marks it in Red. I hover mouse over Debug and between using System.Diagnostics; and System.Diagnostics.Debug I choose the former. This inserts using System.Diagnostics; after all other using statements. It would be nice if VS2010 did not assist me in writing code that won't build due to warnings as errors. How can I make VS2010 smarter? Is there some sort of setting, or does this require a full-fledged add-in of some sort?

  Read the article

• Is it possible to customize @synthesized properties?

  - by Dan K.

  I'm probably just being a bit lazy here, but bear with me. Here's my situation. I have a class with two nonatomic, retained properties. Let's say: @property (nonatomic, retain) UITextField *dateField; @property (nonatomic, retain) NSDate *date; I synthesize them as expected in the implementation. What I want to happen is that whenever the setter on date is invoked, it also does something to the dateField (i.e. it sets the text property on the dateField to be a nicely formatted version of the date). I realize I can just manually override the setter for date in my implementation by doing the following: - (void) setDate:(NSDate *)newDate { if (date != newDate) { [date release]; date = [newDate retain]; // my code to touch the dateField goes here } } What would be awesome is if I could let Objective C handle the retain/release cycle, but still be able to "register" (for lack of a better term) a custom handler that would be invoked after the retain/release/set happens. My guess is that isn't possible. My google-fu didn't come up with any answer to this, though, so I thought I'd ask.

  Read the article

• Save as Ringtone from ContextMenu

  - by kostas_menu

  I have created a button that onClick plays a mp3 file.I have also create a context menu that when you press the button for 2 secs it prompts you to save it as ringtone.How can i save it somewhere in my sd?this is my code: public void onCreate(Bundle icicle) { super.onCreate(icicle); setContentView(R.layout.main); Toast.makeText(a.this, "Touch and listen", Toast.LENGTH_SHORT).show(); Button button = (Button) findViewById(R.id.btn1); registerForContextMenu(button); button.setOnClickListener(new View.OnClickListener() { public void onClick(View v){ MediaPlayer mp = MediaPlayer.create(a.this, R.raw.myalo); mp.start(); Toast.makeText(a.this, "Eisai sto myalo", Toast.LENGTH_SHORT).show(); } }); @Override public void onCreateContextMenu(ContextMenu menu, View v,ContextMenuInfo menuInfo) { super.onCreateContextMenu(menu, v, menuInfo); menu.setHeaderTitle("Save As:"); menu.add(0, v.getId(), 0, "Ringtone"); } @Override public boolean onContextItemSelected(MenuItem item) { if(item.getTitle()=="Ringtone"){function1(item.getItemId());} else {return false;} return true; } public void function1(int id){ Toast.makeText(this, "Ringtone Saved", Toast.LENGTH_SHORT).show(); } }

  Read the article

• Calling a WPF Appliaction and modify exposed properties?

  - by Justin

  I have a WPF Keyboard Application, it is developed in such a way that an application could call it and modify its properties to adapt the Keyboard to do what it needs to. Right now I have a file *.Keys.Set which tells the appliaction (on open) to style itself according to that new style. I know this file could be passed as a command line argument into the appliaction. That would not be a problem. My concern is, is thier a way via a managed environment to change the properties of the executable as long as they are exposed properly, an example: 'Creates a new instance of the Keyboard Appliaction Dim e_key as new WpfAppliaction("C:\egt\components\keyboard.exe") 'Sets the style path e_key.SetStylePath("c:\users\joe\apps\me\default.keys.set") e_key.Refresh() 'Applies the style e_key.HideMenu() 'Hides the menu e_key.ShowDeck("PIN") 'Shows the custom "deck" of keyboard keys the developer 'Created in the style appliaction. ''work with events and resposne 'Clear the instance from memory e_key.close e_key.dispose e_key = nothing This would allow my application to become easily accessible to other Touch Screen Application Developers, allowing them to use my key_board and keep the functionality they need. It seems like it might be possible because (name of executable).application shows all the exposed functions, properties, and values. I just have never done this before. Any help would be appreciated, thank you in advance.

  Read the article

• Parsing data from txt file in J2ME

  - by CSFYPMAIL

  Basically I'm creating an indoor navigation system in J2ME. I've put the location details in a .txt file i.e. Locations names and their coordinates. Edges with respective start node and end node as well as the weight (length of the node). I put both details in the same file so users dont have to download multiple files to get their map working (it could become time consuming and seem complex). So what i did is to seperate the deferent details by typing out location Names and coordinates first, After that I seperated that section from the next section which is the edges by drawing a line with multiple underscores. Now the problem I'm having is parsing the different details into seperate arrays by setting up a command (while manually tokenizing the input stream) to check wether the the next token is an underscore. If it is, (in pseudocode terms), move to the next line in the stream, create a new array and fill it up with the next set of details. I found a some explanation/code HERE that does something similar but still parses into one array, although it manually tokenizes the input. Any ideas on what to do? Thanks Text File Explanation The text has the following format... <--1stSection--  /**   * Section one has the following format   * xCoordinate;yCoordinate;LocationName   */ 12;13;New York City 40;12;Washington D.C. ...e.t.c _________________________ <--(underscore divider) <--2ndSection--  /**   * Its actually an adjacency list but indirectly provides "edge" details.   * Its in this form   * StartNode/MainReferencePoint;Endnode1;distance2endNode1;Endnode2;distance2endNode2;...e.t.c   */ philadelphia;Washington D.C.;7;New York City;2 New York City;Florida;24;Illinois;71 ...e.t.c

  Read the article

• Table cellspacing with CSS

  - by antpaw

  hey, is it possible to add spacing between the cells? <!DOCTYPE html> <html> <head> <meta charset="utf-8" /> <title>test</title> <style> #wrap { display: table-row; /* there is no also cellspacing in CSS afaik :( */ } #wrap div { display: table-cell; /* margin: 40px; doesn't work for table-cell :( */ /* border: 30px solid transparent; works but it's as good as adding padding */ /* border: 30px solid white; works but the page background is invisible */ /* decoration: */ background-color: green; padding: 20px; } </style> </head> <body> <!-- don't touch the markup --> <div id="wrap"> <div>text1</div> <div>text2</div> </div> </body> </html>

  Read the article

• Jquery.Validate plugin + realPerson plugin

  - by Dave Watts

  I can't figure out how to make it so the form wont fire unless the realPerson captcha is "valid". I can see that when the user types in the correct/valid letters and clicks submit it adds a class of "valid" to the input. So Ive been trying to figure out how to get the jquery.validate plugin to only fire when the class "valid" is present. <script type="text/javascript"> $(document).ready(function(){ $('#defaultReal').realperson(); $('#contact_form2').validate({ submitHandler: function(form) { var str = $("form").serialize(); $.ajax({ type: "POST", url: "contactpage.php", data: str, success: function(){ $('#contact_form2').html("<div id='message'></div>"); $('#message').html("<h2>Contact Form Submitted!</h2>") .append("<p>We will be in touch soon.</p>") .hide() .fadeIn(1500, function() { $('#message').append("<img id='checkmark' src='images/check.png' />"); }); }}); return false; } }); Thank you in advanced! -Dave

  Read the article

• Why Is the sender type null when dealing with events

  - by ChloeRadshaw

  From C# Via CLR: Note A lot of people wonder why the event pattern requires the sender parameter to always be of type Object After all, since the MailManager will be the only type raising an event with a NewMail EventArgs object, it makes more sense for the callback method to be prototyped like this: void MethodName(Mai l Manager sender, NewMail EventArgs e); The pattern requires the sender parameter to be of type Object mostly because of inheritance What if Mai lManager were used as a base class for SmtpMailManager? In this case, the callback method should have the sender parameter prototyped as SmtpMailManager instead of Mail Manager, but this can’t happen because SmtpMai lManager just inherited the NewMai l event So the code that was expecting SmtpMail Manager to raise the event must still have to cast the sender argument to SmtpMailManager In other words, the cast is still required, so the sender parameter might as well be typed as Obj ect The next reason for typing the sender parameter as Obj ect is just fexibility It allows the delegate to be used by multiple types that offer an event that passes a NewMail EventArgs object For example, a PopMai lManager class could use the delegate even if this class were not derived from Mail Manager I just simply cannot understand why the sender is an object - Why can it not be generified? so most of the time we do not need to do generic casts

  Read the article

• Updated to Android 2.2 and now my apps input-lines don't show well, do I need to update my SDK?

  - by Allan

  My Android app has a couple input-lines made to receive numbers, it's a calc app. I just updated my Nexus One to Android 2.2 and now my apps input-lines don't respond like the way they should. When I touch the input-line, the Android keyboard used to pop-up just enough to kind of 'lift' the input-line above the keyboard - into the users view. Then when I scrolled down to the next input-line, that input-line used to 'lift-up' into view also. Now, after I updated my N1 to Android 2.2 - the input-lines are not lifting into view all the way. Also, when I scroll down to the next input-line and type in numbers - they don't appear, but when I scroll left...there they are. It's hard to describe my problem but things have definitely changed in the way my apps input-lines respond since the 2.2 update I did. If I try to update my SDk stuff in Eclipse and then recompile my app, might that fix it? Whenever there's an Android update - developers don't always have to recompile all of their apps do they?

  Read the article

• Building a structure/object in a place other than the constructor

  - by Vishal Naidu

  I have different types of objects representing the same business entity. UIObject, PowershellObject, DevCodeModelObject, WMIObject all are different representation to the same entity. So say if the entity is Animal then I have AnimalUIObject, AnimalPSObject, AnimalModelObject, AnimalWMIObject, etc. Now the implementations of AnimalUIObject, AnimalPSObject, AnimalModelObject are all in separate assemblies. Now my scenario is I want to verify the contents of business entity Animal irrespective of the assembly it came from. So I created a GenericAnimal class to represent the Animal entity. Now in GenericAnimal I added the following constructors: GenericAnimal(AnimalUIObject) GenericAnimal(AnimalPSObject) GenericAnimal(AnimalModelObject) Basically I made GenericAnimal depend on all the underlying assemblies so that while verifying I deal with this abstraction. Now the other approach to do this is have GenericAnimal with an empty constructor an allow these underlying assemblies to have a Transform() method which would build the GenericAnimal. Both approaches have some pros and cons: The 1st approach: Pros: All construction logic is in one place in one class GenericAnimal Cons: GenericAnimal class must be touched every-time there is a new representation form. The 2nd approach: Pros: construction responsibility is delegated to the underlying assembly. Cons: As construction logic is spread accross assemblies, tomorrow if I need to add a property X in GenericAnimal then I have to touch all the assemblies to change the Transform method. Which approach looks better ? or Which would you consider a lesser evil ? Is there any alternative way better than the above two ?

  Read the article

• smart phone UI limitations

  - by Manny

  I would like to know, what limitations there are for how far one can go in terms of replacing UI components of current touch screen smart phones, in particular iPhone, Blackberry and android based phones. What I would like to do is create a custom UI for dialing out and incoming calls. I have some experience with Blackberry development. The theme builder for it, can be used to customize certain items on the incoming call screen, but it doesn't look like that you can increase the size of answer button. I know Blackberry also gives you access to all the phone APIs, but I'm not sure that you can create your own UI that can gain preference over the Blackberry incoming call screen. And if you try to customize the incoming call screen by adding any buttons to it, they would be rendered as pictures. I could possibly design a complete UI for android, since different manufactures have different UI for android based phones. Can I do what I want to do using iPhone, Blackberry or android? Or any other phone for that matter? I am guessing may be for Nokia phones using Qt, but I prefer the 3 platforms I listed. Thanks for all your help.

  Read the article

• Generics in a bidirectional association

  - by Verhoevenv

  Let's say I have two classes A and B, with B a subtype of A. This is only part of a richer type hierarchy, obviously, but I don't think that's relevant. Assume A is the root of the hierarchy. There is a collection class C that keeps track of a list of A's. However, I want to make C generic, so that it is possible to make an instance that only keeps B's and won't accept A's. class A(val c: C[A]) { c.addEntry(this) } class B(c: C[A]) extends A(c) class C[T <: A]{ val entries = new ArrayBuffer[T]() def addEntry(e: T) { entries += e } } object Generic { def main(args : Array[String]) { val c = new C[B]() new B(c) } } The code above obviously give the error 'type mismatch: found C[B], required C[A]' on the new B(c) line. I'm not sure how this can be fixed. It's not possible to make C covariant in T (like C[+T <: A]) because the ArrayBuffer is non-variantly typed in T. It's not possible to make the constructor of B require a C[B] because C can't be covariant. Am I barking up the wrong tree here? I'm a complete Scala newbie, so any ideas and tips might be helpful. Thank you! EDIT: Basically, what I'd like to have is that the compiler accepts both val c = new C[B]() new B(c) and val c = new C[A]() new B(c) but would reject val c = new C[B]() new A(c) It's probably possible to relax the typing of the ArrayBuffer in C to be A instead of T, and thus in the addEntry method as well, if that helps.

  Read the article

< Previous Page | 242 243 244 245 246 247 248 249 250 251 252 253  | Next Page >