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Articles indexed Saturday May 29 2010

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  • Nested Views-button aint clicking

    - by Deepika
    i have a view which has a datepicker and a button added to it. There is another view which adds the above view as subview. But the events like touchesBegan and button's action are not being clicked on the subview. Please help The code of the parent view is: iTagDatePicker *dt=[[iTagDatePicker alloc] initWithFrame:CGRectMake(0.0, 180.0, 320.0, 240.0)]; //dt.userInteractionEnabled=YES; //[dt becomeFirstResponder]; dt.backgroundColor=[UIColor clearColor]; [UIView beginAnimations:@"animation" context:nil]; [UIView setAnimationDuration:1.0]; CGPoint cntr; cntr.x=160.0; cntr.y=420.0; dt.center=cntr; [self.view addSubview:dt]; self.view.userInteractionEnabled=YES; CGPoint cntr1; cntr1.x=160.0; cntr1.y=158.0; dt.center=cntr1; [UIView commitAnimations]; [dt release]; and the code for the sub class is: - (id)initWithFrame:(CGRect)frame { if (self = [super initWithFrame:frame]) { dtPicker=[[UIDatePicker alloc] initWithFrame:CGRectMake(frame.origin.x, frame.origin.y, 320.0, 216.0)]; dtPicker.datePickerMode=UIDatePickerModeDate; dtPicker.date=[NSDate date]; [self addSubview:dtPicker]; btn=[[UIButton buttonWithType:UIButtonTypeDetailDisclosure]retain]; btn.frame=CGRectMake(110.0, 400.0, 100.0, 20.0); [btn setTitle:@"Done" forState:UIControlStateNormal]; btn.userInteractionEnabled=YES; [btn becomeFirstResponder]; [btn addTarget:self action:@selector(SelectedVal:) forControlEvents:UIControlEventTouchDown]; [self addSubview:btn]; } return self; } The button is not working

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  • iPad receiving memory warning with low memory use

    - by Fer
    I have an UIWebKit with a HTML, this HTML have several images and text, but just displaying it gives me the memory warning. So I did some tests: The same HTML with different images, fullsize, and after the same images but reduced 50% from it's original size, for the 50% reduced images, I went to preview and reduced all images in 50% The surprising part is the 50% test, you can see that even with 16 images, the memory peak is 4.90MB. That's really surprising. Notice that these values are not always the same, they change but there's not a huge difference between the tests. In the 50% issue, in the 8 and 16 images, although the memory is low, sometimes a memory warning appears, but the performance enhance is noticeable compared to the full size images standing still = memory after scrolling all article 1 Image = [standing still 5MB] [rotating 5.6MB] 2 Images = [standing still 6.99MB] [rotating 7.7MB] 3 Images = [standing still 9.04MB] [rotating 10.9MB] 4 Images = [standing still 10.89MB] [rotating 13.20MB] 8 Images = [standing still 23.14MB] [rotating 25.20MB] (sometimes crashes) 16 Images = [standing still 27.14MB and app crashes] 50% 1 Image = [standing still 3.2MB] [rotating 3.67MB] 2 Image = [standing still 3.2MB] [rotating 3.70MB] 3 Image = [standing still 3.3MB] [rotating 3.79MB] 4 Image = [standing still 3.3MB] [rotating 3.80MB] 8 Images = [standing still 4.29MB] [rotating 4,63MB] (sometimes crashes) 16 Images = [standing still 4.79MB] [rotating 4,90MB] (sometimes crashes) My question is: The app sometimes crashed with 16 small images. Why? The memory was much lower. What is the limit of memory use? These numbers are helpful if you also tell us the maximum. But, the maximum seemed different with the 50% size images. 13.2MB works for large images and 3.8 for small images. Anything higher sometimes crashes. That makes no sense.

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  • Why do hosts prefer Linux to Windows Server?

    - by iconiK
    So far I see a HUGE majority of hosts provide only Linux shared hosting, providing Windows only to VPS (or even to only dedicated servers). Why is it so? While Windows is a lot more expensive than Linux (though it depends on a lot of factors, not just initial and support license cost), it also provides ASP.NET, IIS and of course, Microsoft SQL Server. I know in the past it might have been because of cPanel being Linux only but now they have a Windows version. But still, why is Linux predominantly used on shared hosting? PHP works on both systems. IIS can be (and probably is) faster. MySQL runs on both systems as well. cPanel has a Windows version. Python, Perl, Ruby, all run on Windows as well. You even have MS SQL Server Express, which I find more superior than MySQL in both speed and features. Access is there for low usage requirements, as is SQLite (which is so great for quick small stuff). And with PowerShell you have a good alternative to the Unix shell. EDIT: I am looking for common reasons, I realize each hosting company (and/or it's clients) may have different needs. This becomes very important when you get to VPS or Cloud which give you a full operating system to use.

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  • Firefox 3.6 performance increase tricks.......

    - by metal gear solid
    I use many Add-ons which helps me in Web development so i can't uninstall those addons. and usually I keep open lots of tabs in Firefox. And almost always keep Firefox on on my system. I use default profile only I always keep every addons and firefox itself updated. I found some addons to reduce memory use on Firefox addons site , but user reviews were not good for them still Is there any tested tricks to increase performance and reduce memory use of Firefox 3.6, which really works?

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  • How to count time securely in a Flash game?

    - by user352353
    Hello. I'm developing a Flash game in ActionScript 2, and the issue if that this game has to count the time securely. It can't count the time from the Date class because the Flash Player takes the time from the local computer, and the user can change the local time so the time reported would be fake. I haven't considerend to take the time from the server because there's a 3WH (3 way handshake) time and it would not be practical. What do you sugest me??

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  • How to programmatically generate an audio podcast file?

    - by adib
    Hi Anybody know how to programmatically generate MP3 files with bookmarks that can be used in iTunes / iPod / iPhone / iPod touch? Specifically text bookmarks (bookmarks with titles) that the listener can skip to a specific point in time in the audio file. Also how to add the text transcription of the podcast's content. Even better if you have an example Cocoa code or library to write the MP3 file. Thanks.

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  • Jquery and Prototype Conflict

    - by patrick
    I am having trouble running two javascript files on the same page. I used JQuery.noConflict() (http://api.jquery.com/jQuery.noConflict/) but no luck. <script src="http://www.google.com/jsapi"></script> <script> google.load("prototype", "1.6.0.3",{uncompressed:false}); google.load("scriptaculous", "1.8.1",{uncompressed:false}); </script> <script src="js/jquery.tools.min.js"></script> <script type="text/javascript"> $jQuery.noConflict(); jQuery(document).ready(function($) { $("#download_now").tooltip({ effect: 'slide'}); }); function show_text() { new Ajax.Request('./new.php', { method: 'post', parameters: { userid: $('userid').value }, onSuccess: function(r) { $('update').update(r.responseText) } }); } document.observe("dom:loaded", function() { $('loading').hide(); Ajax.Responders.register({ onCreate: function() { new Effect.Opacity('loading',{ from: 1.0, to: 0.3, duration: 0.7 }); new Effect.toggle('loading', 'appear'); }, onComplete: function() { new Effect.Opacity('loading', { from: 0.3, to: 1, duration: 0.7 }); new Effect.toggle('loading', 'appear'); } }); }); </script>

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  • A question about Drupal Node and Views

    - by Sushi
    I have created an "Add Question" content-type node which lets users ask questions. The questions have a title, image attachment option, and the content. I am showing the questions which have image as a block by filtering it as "Content: Photofield - list True" in Views. This way, only the questions which have images attached to the question appear in this block. Photofield by the way is the content type. I want to create a new block which only shows the questions which have no attached image. I have done filtering this block view by keeping filters as "Content: Photofield - list False" but in vain. There's also some expose option and I did some messing around with it too without coming to the result I want. Can anyone help?

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  • Linq-to-SQL: how many datacontexts ?

    - by sh00
    I have a SQL Server 2008 database with 300 tables. The application I have to design is an Windows Forms app, .NET 3.5, C#. Which is the best way to work with Linq-to-SQL ? I intend to make a datacontext for each business entity. Is there any problem ? I need to know if this way of working with Linq-to-SQL has any disadvantage or can create performance issues ? Thanks.

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  • "no block given" errors with cache_money

    - by emh
    i've inherited a site that in production is generating dozens of "no block given" exceptions every 5 minutes. the top of the stack trace is: vendor/gems/nkallen-cache-money-0.2.5/lib/cash/accessor.rb:42:in `add' vendor/gems/nkallen-cache-money-0.2.5/lib/cash/accessor.rb:33:in `get' vendor/gems/nkallen-cache-money-0.2.5/lib/cash/accessor.rb:22:in `call' vendor/gems/nkallen-cache-money-0.2.5/lib/cash/accessor.rb:22:in `fetch' vendor/gems/nkallen-cache-money-0.2.5/lib/cash/accessor.rb:31:in `get' so it appears that the problem is in the cache money plugin. has anyone experienced something similar? i've cut and pasted the relevant code below -- anyone more familiar with blocks able to discern any obvious problems? 11 def fetch(keys, options = {}, &block) 12 case keys 13 when Array 14 keys = keys.collect { |key| cache_key(key) } 15 hits = repository.get_multi(keys) 16 if (missed_keys = keys - hits.keys).any? 17 missed_values = block.call(missed_keys) 18 hits.merge!(missed_keys.zip(Array(missed_values)).to_hash) 19 end 20 hits 21 else 22 repository.get(cache_key(keys), options[:raw]) || (block ? block.call : nil) 23 end 24 end 25 26 def get(keys, options = {}, &block) 27 case keys 28 when Array 29 fetch(keys, options, &block) 30 else 31 fetch(keys, options) do 32 if block_given? 33 add(keys, result = yield(keys), options) 34 result 35 end 36 end 37 end 38 end 39 40 def add(key, value, options = {}) 41 if repository.add(cache_key(key), value, options[:ttl] || 0, options[:raw]) == "NOT_STORED\r\n" 42 yield 43 end 44 end

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  • Sphinx non-fulltext, integer only search

    - by James
    Hello guys, I've got a few tables that literally only hold integers, no "words" and for some reason Sphinx is unable to hold this data in it's library. Just returns "0 bytes" errors for these indexes. Is it possible to do this? If so, how? Below is an example from my Sphinx.conf for one that fails. source track { type = mysql sql_host = host sql_user = user sql_pass = pass sql_db = db sql_port = port sql_query = SELECT id, user, time FROM track; sql_attr_uint = user sql_attr_uint = time sql_query_info = SELECT * FROM track WHERE id=$id } index track { source = track path = /var/lib/sphinx/track docinfo = extern charset_type = utf-8 min_prefix_len = 1 enable_star = 1 }

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  • Multi-reader IPC solution?

    - by gct
    I'm working on a framework in C++ (just for fun for now), that lets the user write plugins that use a standard API to stream data between each other. There's going to be three basic transport mechanisms for the data: files, sockets, and some kind of IPC piping system. The system is set up so that for the non-file transport, each stream can have multiple readers. IE once a server socket it setup, multiple computers can connect and stream the data. I'm a little stuck at the multi-reader IPC system though. All my plugins run in threads so they live in the same address space, so some kind of shared memory system would work fine, I was thinking I'd write my own circular buffer with a write pointer and read pointers chassing it around the buffer, but I have my doubts that I can achieve the same performance as something like linux pipes. I'm curious what people would suggest for a multi-reader solution to something like this? Is the overhead for pipes or domain sockets low enough that I could just open a connection to each reader and issue separate writes to each reader? This is intended to be significant volumes of data (tens of mega-samples/sec), so performance is a must.

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  • Sending images using Http Post

    - by primal
    I want to send an image from the android client to the Django server using Http Post. The image is chosen from the gallery. At present, I am using list value name Pairs to send the necessary data to the server and receiving responses from Django in JSON. Can the same approach be used for images (with urls for images embedded in JSON responses)? Also which of, accesssing images remotely without downloading them from the server or downloading and storing them in a Bitmap array and using them locally is a better method? The images are few in number (<10) and small in size (50*50 dip). Any tutorial to tackle these problems would be much appreciated.

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  • Version control of software refactoring

    - by Muhammad Alkarouri
    What is the best way of doing version control of large scale refactoring? My typical style of programming (actually of writing documents as well) is getting something out as quickly as possible and then refactoring it. Typically, refactoring takes place at the same time as adding other functionality. In addition to standard refactoring of classes and functions, functions may move from one file to another, files get split and merged or just reordered. For the time being, I am using version control as a lone user, so there is no issue of interaction with other developers at this stage. Still, version control gives me two aspects: Backup and ability to revert to a good version "in case". Looking at the history tells me how the project progressed and the flow of ideas. I am using mercurial on windows using TortoiseHg which enables selections of hunks to commit. The reason I mention this is that I would like advice on the granularity of a commit in refactoring. Should I split refactoring from functionality added always in committing? I have looked at the answers of http://stackoverflow.com/questions/68459/refactoring-and-source-control-how-to but it doesn't answer my question. That question focuses on collaboration with a team. This one concentrates on having a history that is understandable in future (assuming I don't rewrite history as some VCS seem to allow).

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