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  • Problem releasing UIImageView after adding to UIScrollView

    - by Josiah Jordan
    I'm having a memory problem related to UIImageView. After adding this view to my UIScrollView, if I try to release the UIImageView the application crashes. According to the stack trace, something is calling [UIImageView stopAnimating] after [UIImageView dealloc] is called. However, if I don't release the view the memory is never freed up, and I've confirmed that there remains an extra retain call on the view after deallocating...which causes my total allocations to climb quickly and eventually crash the app after loading the view multiple times. I'm not sure what I'm doing wrong here though...I don't know what is trying to access the UIImageView after it has been released. I've included the relevant header and implementation code below (I'm using the Three20 framework, if that has anything to do with it...also, AppScrollView is just a UIScrollView that forwards the touchesEnded event to the next responder): Header: @interface PhotoHiResPreviewController : TTViewController <UIScrollViewDelegate> { NSString* imageURL; UIImage* hiResImage; UIImageView* imageView; UIView* mainView; AppScrollView* mainScrollView; } @property (nonatomic, retain) NSString* imageURL; @property (nonatomic, retain) NSString* imageShortURL; @property (nonatomic, retain) UIImage* hiResImage; @property (nonatomic, retain) UIImageView* imageView; - (id)initWithImageURL:(NSString*)imageTTURL; Implementation: @implementation PhotoHiResPreviewController @synthesize imageURL, hiResImage, imageView; - (id)initWithImageURL:(NSString*)imageTTURL { if (self = [super init]) { hiResImage = nil; NSString *documentsDirectory = [NSString stringWithString:[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject]]; [self setImageURL:[NSString stringWithFormat:@"%@/%@.jpg", documentsDirectory, imageTTURL]]; } return self; } - (void)loadView { [super loadView]; // Initialize the scroll view hiResImage = [UIImage imageWithContentsOfFile:self.imageURL]; CGSize photoSize = [hiResImage size]; mainScrollView = [[AppScrollView alloc] initWithFrame:[UIScreen mainScreen].bounds]; mainScrollView.autoresizingMask = ( UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight); mainScrollView.backgroundColor = [UIColor blackColor]; mainScrollView.contentSize = photoSize; mainScrollView.contentMode = UIViewContentModeScaleAspectFit; mainScrollView.delegate = self; // Create the image view and add it to the scrollview. UIImageView *tempImageView = [[UIImageView alloc] initWithFrame:CGRectMake(0.0, 0.0, photoSize.width, photoSize.height)]; tempImageView.contentMode = UIViewContentModeCenter; [tempImageView setImage:hiResImage]; self.imageView = tempImageView; [tempImageView release]; [mainScrollView addSubview:imageView]; // Configure zooming. CGSize screenSize = [[UIScreen mainScreen] bounds].size; CGFloat widthRatio = screenSize.width / photoSize.width; CGFloat heightRatio = screenSize.height / photoSize.height; CGFloat initialZoom = (widthRatio > heightRatio) ? heightRatio : widthRatio; mainScrollView.maximumZoomScale = 3.0; mainScrollView.minimumZoomScale = initialZoom; mainScrollView.zoomScale = initialZoom; mainScrollView.bouncesZoom = YES; mainView = [[UIView alloc] initWithFrame:[UIScreen mainScreen].bounds]; mainView.autoresizingMask = ( UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight); mainView.backgroundColor = [UIColor blackColor]; mainView.contentMode = UIViewContentModeScaleAspectFit; [mainView addSubview:mainScrollView]; // Add to view self.view = mainView; [imageView release]; [mainScrollView release]; [mainView release]; } - (UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView { return imageView; } - (void)dealloc { mainScrollView.delegate = nil; TT_RELEASE_SAFELY(imageURL); TT_RELEASE_SAFELY(hiResImage); [super dealloc]; } I'm not sure how to get around this. If I remove the call to [imageView release] at the end of the loadView method everything works fine...but I have massive allocations that quickly climb to a breaking point. If I DO release it, however, there's that [UIImageView stopAnimating] call that crashes the application after the view is deallocated. Thanks for any help! I've been banging my head against this one for days. :-P Cheers, Josiah

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  • What do I need to do to prevent exploitation of my postfix server?

    - by Josiah
    I have a a web server that needs to send emails, but not recieve them. I have installed postfix (it came with nagios, also installed on this server) and now I need to make sure that my server does not get used as a spam server. What steps do I need to take to ensure that this does not happen? What additional security measures do I need to put in place? Server is Ubuntu 10.4

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  • How do I make webmin secure?

    - by Josiah
    I want to install webmin to make server administration tasks on my Ubuntu 10.4 server easier. However I'm very nervious about having that kind of power accessable over the web. So I want to know how to secure webmin so that it can't be used to comprimise my server. So far here are my ideas, but I still don't feel comfortable: Make webmin accessable from only the localhost (how?) Use SSH tunneling to access the webmin server whenever I need to administrate it Can anyone help me with instructions on making webmin accessable only from the localhost? What other ways can I make webmin secure?

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  • Automatic Edit Photoshop Canvas Dimensions in Bulk

    - by Josiah
    On a website that I maintain I am required to edit hundreds of images to have a certain canvas size. The images come in all different shapes and sizes. I am trying to figure out a way to automatically edit them so that I dont have to write ineffective AHK scripts to do it. Is there a feature inside of Photoshop (cs3) to do this? I am more than willing to try different software. Thanks guys!

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  • Downloading file from FTP using cURL

    - by Josiah
    I'm trying to use a cURL command to download a file from an FTP server to a local drive on my computer. I've tried curl "ftp://myftpsite" --user name:password -Q "CWD /users/myfolder/" -O "myfile.raw" But it returns an error that says: curl: Remote file name has no length! curl: try 'curl --help' or 'curl --manual' for more information curl: (6) Could not resolve host: myfile.raw; No data record of requested type I've tried some other methods, but nothing seems to work. Also, I'm not quite sure how to specify which folder I want the file to be downloaded to. How would I do that?

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  • Skin issues with multiple controls in a Dot Net Nuke module

    - by Josiah
    In the Dot Net Nuke module that I'm developing I need to separate the controls into several different areas. Unfortunately, it appears that Dot Net Nuke thinks that any control identified by a control key is an 'edit' screen and changes the skin automatically. Is it possible to change this behaviour programmatically? What is the best method of switching controls without having the skin changed?

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  • FullCalendar Events: Confused how to enable resizing.

    - by Josiah Kiehl
    I'm using the FullCalendar plugin, and am very pleased with it, however I can't figure out how to enable resizing. I looked at the source of the calendar on the main FullCalendar page, and my code is no different save that I get my events from a source rather than explicitly define them. What am I missing? $('#schedule').fullCalendar({ events: '/campaigns/scheduled', editable: true });

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  • JWPlayer plays videos at 3x speed on the first run, then works fine in subsequent runs on the same p

    - by Josiah Kiehl
    Go here: http://nano.materials.drexel.edu/research/videolibrary For some bizarre reason, the videos will play at 3x speed on the first run through, but then will play at normal speed each subsequent play. This doesn't happen all the time, and it's not always the same video(s) that do it. I'm utterly baffled. I've reconverted the videos from m4p to flv (using BitComet's converter) several times, double checking the settings each time through with no change to the behavior. Anyone have a clue what's going on?

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  • Undefined method `add' on a cucumber step that usually works.

    - by Josiah Kiehl
    I have a path defined: when /the admin home\s?page/ "/admin/" I have scenario that is passing: Scenario: Let admins see the admin homepage Given "pojo" is logged in And "pojo" is an "admin" And I am on the admin home page Then I should see "Hi there." And I have a scenario that is failing: Scenario: Review flagged photo Given "pojo" is logged in And "pojo" is an "admin" ...bunch of steps that create stuff in the database... And I am on the admin home page Then ... the rest of the steps The step that fails in the second one is "And I am on the admin home page" which passes just fine in the first scenario. Here's the error I get: And I am on the admin home page # features/step_definitions/web_steps.rb:18 undefined method `add' for {}:Hash (NoMethodError) ./app/controllers/admin_controller.rb:13:in `index' ./app/controllers/admin_controller.rb:11:in `each' ./app/controllers/admin_controller.rb:11:in `index' /usr/lib/ruby/1.8/benchmark.rb:308:in `realtime' ./features/step_definitions/web_steps.rb:19:in `/^(?:|I )am on (.+)$/' features/admin.feature:52:in `And I am on the admin home page' This is very odd... why would it be fine in the first case, and not in the second where the only difference are a bunch of steps that create records in the db? [edit] Here's the add stuff to database step: Given /^there is a "([^\"]*)" with the following:$/ do |model, table| model.constantize.create!(table.rows_hash) end

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  • Calculating confidence intervals for a non-normal distribution

    - by Josiah
    Hi all, First, I should specify that my knowledge of statistics is fairly limited, so please forgive me if my question seems trivial or perhaps doesn't even make sense. I have data that doesn't appear to be normally distributed. Typically, when I plot confidence intervals, I would use the mean +- 2 standard deviations, but I don't think that is acceptible for a non-uniform distribution. My sample size is currently set to 1000 samples, which would seem like enough to determine if it was a normal distribution or not. I use Matlab for all my processing, so are there any functions in Matlab that would make it easy to calculate the confidence intervals (say 95%)? I know there are the 'quantile' and 'prctile' functions, but I'm not sure if that's what I need to use. The function 'mle' also returns confidence intervals for normally distributed data, although you can also supply your own pdf. Could I use ksdensity to create a pdf for my data, then feed that pdf into the mle function to give me confidence intervals? Also, how would I go about determining if my data is normally distributed. I mean I can currently tell just by looking at the histogram or pdf from ksdensity, but is there a way to quantitatively measure it? Thanks!

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  • Deleting a resource in a Cucumber (Capybara) step doesn't work

    - by Josiah Kiehl
    Here is my Scenario: Scenario: Delete a match Given pojo is logged in And there is a match with the following: | game_id | 1 | | name | Game del Pojo | | date_and_time | 2010-02-23 17:52:00 | | players | 2 | | teams | 2 | | comment | This is an awesome comment | | user_id | 1 | And I am on the show match 1 page And show me the page When I follow "Delete" And I follow "Yes, delete it" Then there should not be a match with the following: | game_id | 1 | | name | Game del Pojo | | date_and_time | 2010-02-23 17:52:00 | | players | 2 | | teams | 2 | | comment | This is an awesome comment | | user_id | 1 | If I walk through these steps manually, they work. When I click the confirmation: Yes, delete it, then the match is deleted. Cucumber, however, fails to delete the record and the last step fails. And I follow "Yes, delete it" # features/step_definitions/web_steps.rb:32 Then there should not be a match with the following: # features/step_definitions/match_steps.rb:8 | game_id | 1 | | name | Game del Pojo | | date_and_time | 2010-02-23 17:52:00 | | players | 2 | | teams | 2 | | comment | This is an awesome comment | | user_id | 1 | <nil> expected but was <#<Match id: 1, name: "Game del Pojo", date_and_time: "2010-02-23 17:52:00", teams: 2, created_at: "2010-03-02 23:06:33", updated_at: "2010-03-02 23:06:33", comment: "This is an awesome comment", players: 2, game_id: 1, user_id: 1>>. (Test::Unit::AssertionFailedError) /usr/lib/ruby/1.8/test/unit/assertions.rb:48:in `assert_block' /usr/lib/ruby/1.8/test/unit/assertions.rb:495:in `_wrap_assertion' /usr/lib/ruby/1.8/test/unit/assertions.rb:46:in `assert_block' /usr/lib/ruby/1.8/test/unit/assertions.rb:83:in `assert_equal' /usr/lib/ruby/1.8/test/unit/assertions.rb:172:in `assert_nil' ./features/step_definitions/match_steps.rb:22:in `/^there should (not)? be a match with the following:$/' features/matches.feature:124:in `Then there should not be a match with the following:' Any clue how to debug this? Thanks!

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  • I like to learn computer science and programming, but i have no understanding.

    - by Josiah
    Hi all, I like to learn computer science and programming, but i don't know where and how to start. For the past two months, i have been researching on types of programming, i found my interest in desktop programming, and also found this subjects (discrete maths, logic, algorithms, data structures, artificial intelligence, simulation) said to be a most known (subjects). Well as a beginner, i have no understanding on what type of language or books that can cover all these subjects, or even how to write any code. Secondly, am as young as you can guess and i need a language to start with that will be easy for me to understand, and books to read. Thank you.

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  • New to Android: Dynamically changing views

    - by Josiah Kiehl
    I'm trying to learn how to build apps for Android. The first simple app, which will become a component of a bigger app I hope to build, is to have a button on the screen where, when tapped, it adds something new to the view. For instance: Imagine a layout that only has a button: [Create!] When that button, the view gets a new row added to it: [Create!] A Something! Upon subsequent presses, more rows are added [Create!] A Something! A Something! And so on. I've made a LinearLayout and placed the button in it, and have attached a click listener to it. That all works great. What I can't figure out is how to get a handle on the LinearLayout in the onClick function with which I'll addView() the new TextView that says "A Something!" Am I on the right track? What basic thing am I missing? Thanks!

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  • Why does animate not work for the first few 'selections' of my next button?

    - by Josiah
    I'll just start right off the bat and say I'm fairly new to JQuery, so if you see some glaring issues with my code....let me know what I'm doing wrong! Either way, I've been working on a script to fade divs in and out using the z-index and animate. It "works" after about 2-3 clicks, but the first two clicks do not fade or animate as I was hoping....why is that? I'll just throw javascript up here, but if you need/want more code, just let me know. Thanks! $(document).ready(function() { //Slide rotation/movement variables var first = $('#main div.slide:first').attr('title'); var last = $('#main div.slide').length; //Needed for the next/prev buttons var next; //Set the first div to the front, and variable for first div var $active = $('#main div.slide[title='+first+']'); //Hide the links until the div is hovered over and take them away when mouse leaves $('#main').children('a').hide(); $('#main').mouseenter(function() { $('#main').children('a').fadeIn(750); }).mouseleave(function() { $('#main').children('a').fadeOut(750); }); $active.css('z-index', '4'); $('#main #next').click(function() { if ((next = parseInt($active.attr('title')) + 1) > last) { next = 1; } $active.css('z-index', '0').stop().animate({opacity: 0}, 1000); $active = $('#main div[title='+next+']').css('z-index', '4').stop().animate({opacity : 1}, 1000); }); });

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  • How to use css to change <pre> font size

    - by user289346
    pre{font-family:cursive;font-style:italic;font-size:xxx-small} how to change pre font size Hancock New Hampshire: Massachusetts: Rhode Island: Connecticut: New York: New Jersey: Pennsylvania: Josiah Bartlett, John Hancock, Stephen Hopkins, Roger Sherman, William Floyd, Richard Stockton, Robert Morris, William Whipple, Samuel Adams, William Ellery Samuel Huntington, Philip Livingston, John Witherspoon, Benjamin Franklin, Matthew Thornton

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