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  • Returning objects with autorelease but I still leak memory

    - by gok
    I am leaking memory on this: my custom class: + (id)vectorWithX:(float)dimx Y:(float)dimy{ return [[[Vector alloc] initVectorWithX:dimx Y:dimy] autorelease]; } - (Vector*)add:(Vector*)q { return [[[Vector vectorWithX:x+q.x Y:y+q.y] retain] autorelease]; } in app delegate I initiate it: Vector *v1 = [[Vector alloc] initVector]; Vector *v2 = [[Vector alloc] initVector]; Vector *vtotal = [[v1 add:v2] retain]; [v1 release]; [v2 release]; [vtotal release]; How this leaks? I release or autorelease them properly. The app crashes immediately if I don't retain these, because of an early release I guess. It also crashes if I add another release.

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  • Where can I find the Visual Studio 2010 RTM release notes?

    - by Lernkurve
    Question Where can I find a list of changes introduced to Visual Studio 2010 Ultimate RTM that were added since Visual Studio 2010 Ultimate RC? In fact, I'm only interested in changes related to MS Test Manager 2010 and Coded UI Tests. Where I have looked so far I have searched the Internet, looked for a readme.txt in the installation folder, looked into the Visual Studio help (F1) and browsed the "What's new in Visual Studio 2010" section on MSDN. No luck. Found Scott Guthrie's blog post Visual Studio 2010 and .NET 4 Released, but that's not exactly what I am looking for. It's not a changelog since VS2010RC. I suppose there is no such file because they made too many changes to document and hand out to end users. But if there was, I'd be glad if someone could point me to it. Thanks.

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  • Follow up viewDidUnload vs. dealloc question...

    - by entaroadun
    Clarification question as a follow up to: http://stackoverflow.com/questions/2261972/what-exactly-must-i-do-in-viewdidunload http://stackoverflow.com/questions/1158788/when-should-i-release-objects-in-voidviewdidunload-rather-than-in-dealloc So let's say there's a low memory error, and the view is hidden, and viewDidUnload is called. We do the release and nil dance. Later the entire view stack is not needed, so dealloc is called. Since I already have the release and nil stuff in viewDidUnload, I don't have it in dealloc. Perfect. But if there's no low memory error, viewDidUnload is never called. dealloc is called and since I don't have the release and nil stuff, there's a memory leak. In other words, will dealloc ever be called without viewDidUnload being called first? And the practical follow up to that is, if I alloc and set something in viewDidLoad, and I release it and set to nil in viewDidUnload, do I leave it out of dealloc, or do I do a defensive nil check in dealloc and release/nil it if it's not nil?

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  • When to release the model(representedObject) of the corresponding UIViewController.

    - by user313786
    Hi, In AppKit we have "representedObject" available through NSViewController, this representedObject is generally set to ModelController or the model which the NSViewController displays, this works great with bindings as you just set the new representedObject and model details are updated in the view, BUT in case of iPhone (UIKit, with NO Cocoa bindings available), there is no such representedObject in UIViewController so here are few things I am interested in knowing:- What is the best/recommended way of binding the model to the UIViewController?, preferably dont want to maintain lot of IBOutlets and calls setters to updated the changed model data for display in view. How/When should the related model of the UIViewController be released? When is the -[UIViewController dealloc] called, in the typical iPhone application. Am looking for architecting some classes so that the UIViewController coordinates between the view and the model, but at the same time, deallocs the model when ever not necessary. TIA.

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  • Should I update an application when a used framework release a new version?

    - by Alex
    I have an application that use several libraries and frameworks, should I update my application to use the latest version of those frameworks when a new stable version is available? For example, migrate from python 2.x to python 3.x, or from spring 2.5 to spring 3.0, but the question es very general, not language specific. If I keep the application updated to use the latest stable frameworks versions then I will have new features available in case I need them. If I don't, then may be in a future I will need to do the update and it will be a lot of work to update the application. Is there any best practice about this?

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  • How can I automatically release resources RAII-style in Perl?

    - by Philip Potter
    Say I have a resource (e.g. a filehandle or network socket) which has to be freed: open my $fh, "<", "filename" or die "Couldn't open filename: $!"; process($fh); close $fh or die "Couldn't close filename: $!"; Suppose that process might die. Then the code block exits early, and $fh doesn't get closed. I could explicitly check for errors: open my $fh, "<", "filename" or die "Couldn't open filename: $!"; eval {process($fh)}; my $saved_error = $@; close $fh or die "Couldn't close filename: $!"; die $saved_error if $saved_error; but this kind of code is notoriously difficult to get right, and only gets more complicated when you add more resources. In C++ I would use RAII to create an object which owns the resource, and whose destructor would free it. That way, I don't have to remember to free the resource, and resource cleanup happens correctly as soon as the RAII object goes out of scope - even if an exception is thrown. Unfortunately in Perl a DESTROY method is unsuitable for this purpose as there are no guarantees for when it will be called. Is there a Perlish way to ensure resources are automatically freed like this even in the presence of exceptions? Or is explicit error checking the only option?

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  • What should I really release as open source when I use Berkeley DB (JE)?

    - by Ersin Er
    The Berkeley DB (JE) license information says: "...Redistributions in any form must be accompanied by information on how to obtain complete source code for the DB software and any accompanying software that uses the DB software.... For an executable file, complete source code means the source code for all modules it contains. It does not include source code for modules or files that typically accompany the major components of the operating system on which the executable file runs." If I build an abstraction level on top of BDB JE, should I open source only that library or any software that uses BDB JE indirectly?

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  • Does The Clear Method On A Collection Release The Event Subscriptions?

    - by DaveB
    I have a collection private ObservableCollection<Contact> _contacts; In the constructor of my class I create it _contacts = new ObservableCollection<Contact>(); I have methods to add and remove items from my collection. I want to track changes to the entities in my collection which implement the IPropertyChanged interface so I subscribe to their PropertyChanged event. public void AddContact(Contact contact) { ((INotifyPropertyChanged)contact).PropertyChanged += new PropertyChangedEventHandler(Contact_PropertyChanged); _contacts.Add(contact); } public void AddContact(int index, Contact contact) { ((INotifyPropertyChanged)contact).PropertyChanged += new PropertyChangedEventHandler(Contact_PropertyChanged); _contacts.Insert(index, contact); } When I remove an entity from the collection, I unsubscribe from the PropertyChanged event. I am told this is to allow the entity to be garbage collected and not create memory issues. public void RemoveContact(Contact contact) { ((INotifyPropertyChanged)contact).PropertyChanged -= Contact_PropertyChanged; _contacts.Remove(contact); } So, I hope this is all good. Now, I need to clear the collection in one of my methods. My first thought would be to call _contacts.Clear(). Then I got to wondering if this releases those event subscriptions? Would I need to create my own clear method? Something like this: public void ClearContacts() { foreach(Contact contact in _contacts) { this.RemoveContact(contact); } } I am hoping one of the .NET C# experts here could clear this up for me or tell me what I am doing wrong.

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  • UI View Controller crashes after interruption

    - by nosuic
    Given the multitasking of iOS I thought it wouldn't be a pain to pause and resume my app, by pressing the home button or due to a phone call, but for a particular view controller it crashes. The navigation bar is working fine i.e. when I tap "Back" it's ok, but if I try to tap controls of the displayed UI View Controller then I get EXC_BAD_ACCESS.. =/ Please find the code of my problematic View Controller below. I'm not very sure about it myself, because I used loadView to build its View, but apart from this interruption problem it works fine. StoreViewController.h #import <UIKit/UIKit.h> @protocol StoreViewDelegate <NSObject> @optional - (void)DirectionsClicked:(double)lat:(double)lon; @end @interface StoreViewController : UIViewController { double latitude; double longitude; NSString *description; NSString *imageURL; short rating; NSString *storeType; NSString *offerType; UIImageView *imageView; UILabel *descriptionLabel; id<StoreViewDelegate> storeViewDel; } @property (nonatomic) double latitude; @property (nonatomic) double longitude; @property (nonatomic) short rating; @property (nonatomic,retain) NSString *description; @property (nonatomic,retain) NSString *imageURL; @property (nonatomic,retain) NSString *storeType; @property (nonatomic,retain) NSString *offerType; @property (assign) id<StoreViewDelegate> storeViewDel; @end StoreViewController.m #import "StoreViewController.h" #import <QuartzCore/QuartzCore.h> @interface StoreViewController() -(CGSize) calcLabelSize:(NSString *)string withFont:(UIFont *)font maxSize:(CGSize)maxSize; @end @implementation StoreViewController @synthesize storeViewDel, longitude, latitude, description, imageURL, rating, offerType, storeType; - (void)mapsButtonClicked:(id)sender { } - (void)loadView { UIView *storeView = [[UIView alloc] initWithFrame:CGRectMake(0.0f, 0.0f, 0.0f, 0.0f)]; // Colours UIColor *lightBlue = [[UIColor alloc] initWithRed:(189.0f / 255.0f) green:(230.0f / 255.0f) blue:(252.0f / 255.0f) alpha:1.0f]; UIColor *darkBlue = [[UIColor alloc] initWithRed:(28.0f/255.0f) green:(157.0f/255.0f) blue:(215.0f/255.0f) alpha:1.0f]; // Layout int width = self.navigationController.view.frame.size.width; int height = self.navigationController.view.frame.size.height; float firstRowHeight = 100.0f; int margin = width / 20; int imgWidth = (width - 3 * margin) / 2; // Set ImageView imageView = [[UIImageView alloc] initWithFrame:CGRectMake(margin, margin, imgWidth, imgWidth)]; CALayer *imgLayer = [imageView layer]; [imgLayer setMasksToBounds:YES]; [imgLayer setCornerRadius:10.0f]; [imgLayer setBorderWidth:4.0f]; [imgLayer setBorderColor:[lightBlue CGColor]]; // Load default image NSData *imageData = [NSData dataWithContentsOfFile:@"thumb-null.png"]; UIImage *image = [UIImage imageWithData:imageData]; [imageView setImage:image]; [storeView addSubview:imageView]; // Set Rating UIImageView *ratingView = [[UIImageView alloc] initWithFrame:CGRectMake(3 * width / 4 - 59.0f, margin, 118.0f, 36.0f)]; UIImage *ratingImage = [UIImage imageNamed:@"bb-rating-0.png"]; [ratingView setImage:ratingImage]; [ratingImage release]; [storeView addSubview:ratingView]; // Set Get Directions button UIButton *btn = [[UIButton alloc] initWithFrame:CGRectMake(3 * width / 4 - 71.5f, 36.0f + 2*margin, 143.0f, 63.0f)]; [btn addTarget:self action:@selector(mapsButtonClicked:) forControlEvents:UIControlEventTouchUpInside]; UIImage *mapsImgUp = [UIImage imageNamed:@"bb-maps-up.png"]; [btn setImage:mapsImgUp forState:UIControlStateNormal]; [mapsImgUp release]; UIImage *mapsImgDown = [UIImage imageNamed:@"bb-maps-down.png"]; [btn setImage:mapsImgDown forState:UIControlStateHighlighted]; [mapsImgDown release]; [storeView addSubview:btn]; [btn release]; // Set Description Text UIScrollView *descriptionView = [[UIScrollView alloc] initWithFrame:CGRectMake(0.0f, imgWidth + 2 * margin, width, height - firstRowHeight)]; descriptionView.backgroundColor = lightBlue; CGSize s = [self calcLabelSize:description withFont:[UIFont systemFontOfSize:18.0f] maxSize:CGSizeMake(width, 9999.0f)]; descriptionLabel = [[UILabel alloc] initWithFrame:CGRectMake(margin, margin, width - 2 * margin, s.height)]; descriptionLabel.lineBreakMode = UILineBreakModeWordWrap; descriptionLabel.numberOfLines = 0; descriptionLabel.font = [UIFont systemFontOfSize:18.0f]; descriptionLabel.textColor = darkBlue; descriptionLabel.text = description; descriptionLabel.backgroundColor = lightBlue; [descriptionView addSubview:descriptionLabel]; [storeView addSubview:descriptionView]; [descriptionLabel release]; [lightBlue release]; [darkBlue release]; self.view = storeView; [storeView release]; } - (void)didReceiveMemoryWarning { // Releases the view if it doesn't have a superview. [super didReceiveMemoryWarning]; // Release any cached data, images, etc. that aren't in use. } - (void)viewDidUnload { [super viewDidUnload]; // Release any retained subviews of the main view. // e.g. self.myOutlet = nil; } - (void)dealloc { [imageView release]; [descriptionLabel release]; [super dealloc]; } @end Any suggestions ? Thank you, F.

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  • In XAML is there way to bind key press and key release to specific commands?

    - by Ashley Davis
    In my application I have keys that bound to commands using the KeyBinding class. The command is executed when the key is pressed and released. I have a special case where I want to bind separate commands to the pressed action and to the released action. For example when the space key is pressed I want my app to run a command to enter a special mode. Then when the space key is released I want to run another command to exit that special mode. Currently I do this by manually handling the KeyUp and KeyDown events. Is there anyway to execute commands for pressed and released purely in XAML?

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  • EASY: How does one release memory correctly in the attached C array?

    - by Tricky
    Hi, I'm just trying to work out why the following code is leaking memory and I have a funny feeling that i'm not releasing the array memory correctly. This is a C function in a wider objective-c app and I'm not native to C... i've tried just using free() on the array, but have a feeling this isn't the whole story... Could someone have a look and see what I'm missing here. Thanks! CFIndex theNumberOfSettings = 3; CTParagraphStyleSetting theSettings[3] = { {kCTParagraphStyleSpecifierAlignment, sizeof(CTTextAlignment), &alignment}, {kCTParagraphStyleSpecifierLineSpacing, sizeof(lineSpacing), &lineSpacing}, {kCTParagraphStyleSpecifierHeadIndent, sizeof(headIndent), &headIndent} }; CTParagraphStyleRef theParagraphRef = CTParagraphStyleCreate(theSettings, theNumberOfSettings); CFAttributedStringSetAttribute(attrString, CFRangeMake(0, CFAttributedStringGetLength(attrString)-1), kCTParagraphStyleAttributeName, theParagraphRef); CFRelease(theParagraphRef); free(theSettings);

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  • Is this a safe way to release resources in Java?

    - by palto
    Usually when code needs some resource that needs to be released I see it done like this: InputStream in = null; try{ in = new FileInputStream("myfile.txt"); doSomethingWithStream(in); }finally{ if(in != null){ in.close(); } } What I don't like is that you have to initialize the variable to null and after that set it to another value and in the finally block check if the resource was initialized by checking if it is null. If it is not null, it needs to be released. I know I'm nitpicking, but I feel like this could be done cleaner. What I would like to do is this: InputStream in = new FileInputStream("myfile.txt"); try{ doSomethingWithStream(in); }finally{ in.close(); } To my eyes this looks almost as safe as the previous one. If resource initialization fails and it throws an exception, there's nothing to be done(since I didn't get the resource) so it doesn't have to be inside the try block. The only thing I'm worried is if there is some way(I'm not Java certified) that an exception or error can be thrown between operations? Even simpler example: Inputstream in = new FileInputStream("myfile.txt"); in.close(); Is there any way the stream would be left open that a try-finally block would prevent?

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  • Options and best practices to release free and paid version of the same app to Android Market

    - by Rich
    I have installed a couple of free apps on my Android phone and then later "upgraded" to the paid full version. My first instincts for doing the same would be to create two apps with the same package name so that installing one overwrites the other, but apps in the Market must be unique by package name. What are some patterns and best practices for sharing code and resources for free and paid versions of the same app and any naming conventions or project structures that work for this scenario as well?

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  • Ember-App-Kit: How to execute code only in release mode?

    - by Dominik Schmidt
    I have created an error handler as described here: http://emberjs.com/guides/understanding-ember/debugging/#toc_implement-a-code-ember-onerror-code-hook-to-log-all-errors-in-production But this code is not only executed in production mode but also in normal debug builds which floods my server logs. I know that Ember.debug() calls and alike are being filtered out for production builds, but I couldn't find out where/how that is implemented and if that same mechanism could be used to make my code only fire in production code.

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  • Linux - Bash Redirect a String to a file

    - by user3502786
    I wrote a simple script that is reading the file content and incrementing a a number inside this file, then i'm holding the change using awk, when i'm trying ro redirect the new String using '' the whole string is redirected in one line and not like the original was which is 4 lines. #!/bin/bash -x # This script is for Incrementing build numbers path=/home/RND/abrodov file=tst.txt tst=`cat $path/$file` printf "this is the content of the file before incrementing: \n $tst" newexpr=`awk '/^Build Number/{$4=$4+1;}1' /home/RND/abrodov/tst.txt` printf "\n the new content \n $newexpr" echo $newexpr > $path/$file This is the original file before running the script: Major Release Number = 4 Minor Release Number = 1 Service Pack Release Number = 2 Build Number = 22 This is the content after i used the script: Major Release Number = 4 Minor Release Number = 1 Service Pack Release Number = 2 Build Number = 23 I'm trying to figure out how can i redirect the text in the original format which is 4 lines.

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  • this.Dispose() Don't release memory used by Form after Closing it .

    - by Ehab Sutan
    Hello, in C# Application. I've a windows form application in which clicking certain button make object from a 2nd Form. On closing this 2nd From by user Memory used by this form not released (from Task Manager). I Tried using this.dispose() on exit button ,tried this.close() , tried form2 =null in the main code ,and tried clearing all controls from this form by code before Disposing and every time the clicks the button memory usage by the application increases more and memory used by previous instance not released. What shall i use to solve this problem ?

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  • Run Oracle E-Business Suite Period Close Diagnostic

    - by Get Proactive Customer Adoption Team
    Untitled Document Be Proactive & Save Time—Use the Period Close Diagnostic During the Month Have you ever closed your books at the end of the month and, due to problems with your Oracle E-Business Suite Period Close, you found yourself working all night or all weekend to resolve your issues? You can avoid issues by running the Oracle E-Business Suite Period Close Diagnostics throughout the month, prior to closing Oracle Financial Assets, General Ledger, Payables, and/or Receivables. You can identify issues that will interfere with your period close early, preventing last minute fire drills. Correct your errors or, if you need Oracle Support’s assistance, attach the output to a service request for faster resolution by the support engineer. Oracle E-Business Suite Diagnostics are included in your Oracle Premier Support agreement at no extra charge. They are proactive, easy to use, tools provided by Oracle Support to ease the gathering and analyzing of information from your E-Business Suite, specific to an existing issue or setup. Formatted output displays the information gathered, the findings of the analysis, and the appropriate actions to take if necessary. These tools are designed for both the functional and technical user, providing no EBS administration features, so you can safely assign this responsibility to users who are not administrators. A good place to start with the Support Diagnostics is the install patch Note 167000.1. Everything you need is in this patch and you install it on top of your E-Business Suite. If you are on EBS 12.0.6 or below, Oracle delivers the diagnostic tests in a standard Oracle patch and you apply it using the adpatch utility. If you are on EBS release 12.1.1 or above, your diagnostics are already there. Oracle E-Business Suite Diagnostics: Prevent Issues—resolving configuration and data issues that would cause processes to fail Identify Issues Quickly—resolving problems without the need to contact Oracle Support Reduce Resolution Time—minimizing the time spent to resolve an issue by increasing support engineer efficiency In the example below, you will see how to run the EBS Period Close Diagnostic step-by-step using an SQLGL Period Closing Activity Test. This allows you to check throughout the month to identify and resolve any issue that might prevent closing the period in the General Ledger on schedule.   Click the Select Application button. Select your Application. In this example, we will use the Period Close test. Scroll down to Period Close Place a check mark in the Period Closing box in the Select column. Click the Execute button at the bottom of the page Input the parameters. Click the Submit button Click the Refresh button, until the Status of the test changes from “In Progress” to “Completed” Click the icon under, View Report to view the test results   The report will complete successfully or show completed with errors. The report will show where the error is located, what the error is, and what action(s) to take for resolution. Remember, if you need to work with Oracle Support to resolve your issue, attach the report to your Service Request so the engineer can start working the issue. Completed with errors Completed successfully with no errors If you have questions, please ask in the E-Business Suite Category’s Diagnostic Tools Community. You may find the answer waiting for you in a prior community discussion or in one of the resources posted by an Oracle Support moderator. Oracle’s Period Close Diagnostic, and the other E-Business Suite Diagnostics, save you time and help keep you on schedule. If you run the Period Close Diagnostic throughout the month, you can identify issues to resolve and get help, if needed. When opening a Service Request, attaching the output from the diagnostic report, speeds resolution. With the issues resolved ahead of time, your Period Close should complete without errors. Avoiding the unexpected, helps to close your books on time and without late nights or working through your weekend. Recommended Reads E-Business Suite Diagnostics Period / Year End Close [ID 402237.1] lists all of the Closing Period Diagnostic Tests. I highly recommend that customers execute these tests prior to closing a period. The period closing tests listed in this document help you identify known issues that prevent a successful period close. Use these tests prior to closing a period. To learn about all the available EBS Diagnostics, please review the E-Business Suite Diagnostics Overview [ID 342459.1].

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  • Yet another UITableView Question

    - by barbgal
    Hi, I have a strange issue in my iPhone application. I have created a UITableView with 4 Sections and 3 Rows so totally 12 Rows. But - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath The above method only gets called for 9 times instead of 12 times.why this happenning. My 4th section is not getting constructed but my 1st section gets duplicated as 4th section. Thanks for your time and help. Plese refer my code below @interface MainViewController : UITableViewController<UITextFieldDelegate,UITableViewDelegate,UITableViewDataSource> { } @end // Implement viewDidLoad to do additional setup after loading the view, typically from a nib. - (void)viewDidLoad { CGRect frameRect = CGRectMake(0,0,320,460); UITableView *tableView = [[UITableView alloc] initWithFrame:frameRect style:UITableViewStyleGrouped]; tableView.delegate = self; tableView.dataSource = self; tableView.backgroundColor = [UIColor purpleColor]; tableView.scrollEnabled = YES; self.view = tableView; [tableView release]; [super viewDidLoad]; } - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section { // Return the number of rows in the section. return 3; } - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView { // Return the number of sections. return 4; } // Customize the appearance of table view cells. - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { NSLog(@"CELL IS NIL %i", indexPath.section); static NSString *CellIdentifier = @"Cell"; UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; if (cell == nil) { cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease]; if (indexPath.section == 0) { if(indexPath.row == 0) { cell.text = @"Tmail"; UITextField *aField = [[UITextField alloc]initWithFrame:CGRectMake(100,10,200,40)]; aField.placeholder = @"Mandatory"; aField.delegate = self; aField.textColor = [UIColor blackColor]; [cell addSubview:aField]; [aField release]; } else if ( indexPath.row == 1 ) { cell.text = @"English"; UITextField *aField = [[UITextField alloc]initWithFrame:CGRectMake(100,10,200,40)]; aField.placeholder = @"Mandatory"; aField.delegate = self; aField.textColor = [UIColor blackColor]; [cell addSubview:aField]; [aField release]; } else { cell.text = @"Hindi"; UITextField *aField = [[UITextField alloc]initWithFrame:CGRectMake(100,10,200,40)]; aField.placeholder = @"Mandatory"; aField.delegate = self; aField.textColor = [UIColor blackColor]; [cell addSubview:aField]; [aField release]; } } else if (indexPath.section == 1) { if(indexPath.row == 0) { cell.text = @"Street"; UITextField *aField = [[UITextField alloc]initWithFrame:CGRectMake(100,10,200,40)]; aField.placeholder = @"Mandatory"; aField.delegate = self; aField.textColor = [UIColor blackColor]; [cell addSubview:aField]; [aField release]; } else if ( indexPath.row == 1 ) { cell.text = @"City"; UITextField *aField = [[UITextField alloc]initWithFrame:CGRectMake(100,10,200,40)]; aField.placeholder = @"Mandatory"; aField.delegate = self; aField.textColor = [UIColor blackColor]; [cell addSubview:aField]; [aField release]; } else { cell.text = @"State"; UITextField *aField = [[UITextField alloc]initWithFrame:CGRectMake(100,10,200,40)]; aField.placeholder = @"Mandatory"; aField.delegate = self; aField.textColor = [UIColor blackColor]; [cell addSubview:aField]; [aField release]; } } else if (indexPath.section == 2) { if(indexPath.row == 0) { cell.text = @"Salem"; UITextField *aField = [[UITextField alloc]initWithFrame:CGRectMake(100,10,200,40)]; aField.placeholder = @"Mandatory"; aField.delegate = self; aField.textColor = [UIColor blackColor]; [cell addSubview:aField]; [aField release]; } else if ( indexPath.row == 1 ) { cell.text = @"Samalpatti"; UITextField *aField = [[UITextField alloc]initWithFrame:CGRectMake(100,10,200,40)]; aField.placeholder = @"Mandatory"; aField.delegate = self; aField.textColor = [UIColor blackColor]; [cell addSubview:aField]; [aField release]; } else { cell.text = @"Chennai"; UITextField *aField = [[UITextField alloc]initWithFrame:CGRectMake(100,10,200,40)]; aField.placeholder = @"Mandatory"; aField.delegate = self; aField.textColor = [UIColor blackColor]; [cell addSubview:aField]; [aField release]; } } else if (indexPath.section == 3) { if(indexPath.row == 0) { cell.text = @"NOKIA"; UITextField *aField = [[UITextField alloc]initWithFrame:CGRectMake(100,10,200,40)]; aField.placeholder = @"Mandatory"; aField.delegate = self; aField.textColor = [UIColor blackColor]; [cell addSubview:aField]; [aField release]; } else if ( indexPath.row == 1) { cell.text = @"SAMSUNG"; UITextField *aField = [[UITextField alloc]initWithFrame:CGRectMake(100,10,200,40)]; aField.placeholder = @"Mandatory"; aField.delegate = self; aField.textColor = [UIColor blackColor]; [cell addSubview:aField]; [aField release]; } else { cell.text = @"SONY"; UITextField *aField = [[UITextField alloc]initWithFrame:CGRectMake(100,10,200,40)]; aField.placeholder = @"Mandatory"; aField.delegate = self; aField.textColor = [UIColor blackColor]; [cell addSubview:aField]; [aField release]; } } } return cell; }

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  • How can I change 'self.view' within a button method created outside of 'loadView'

    - by Scott
    Hey guys. So I am creating buttons dynamically within loadView. Each of these buttons is given an action using the @Selector method, such as : [button addTarget:self action:@selector(showCCView) forControlEvents:UIControlEventTouchUpInside]; Now that showCCView method is defined outside of loadView, where this above statement is located. The point of the method is to change the view currently on the screen (so set self.view = ccView). It gives me an error every time I try and access self.view outside of loadView, and even sometimes when I try and access it at random places within loadView, it just has been acting really weird. I tried to change it around so I wouldn't have to deal with this either. I had made a function + (void) showView: (UIView*) oldView: (UIView*) newView; but this didn't work out either because the @Selector was being real prissy about using it with a function that needed two parameters. Any help please? Here is my code: // // SiteOneController.m // InstantNavigator // // Created by dni on 2/22/10. // Copyright 2010 __MyCompanyName__. All rights reserved. // #import "SiteOneController.h" @implementation SiteOneController + (UIView*) ccContent { UIView *ccContent = [[UIView alloc] initWithFrame:[[UIScreen mainScreen] applicationFrame]]; ccContent.backgroundColor = [UIColor whiteColor]; [ccContent addSubview:[SiteOneController myNavBar1:@"Constitution Center Content"]]; return ccContent; } // Button Dimensions int a = 62; int b = 80; int c = 200; int d = 30; // NPSIN Green Color + (UIColor*)myColor1 { return [UIColor colorWithRed:0.0f/255.0f green:76.0f/255.0f blue:29.0f/255.0f alpha:1.0f]; } // Creates Nav Bar with default Green at top of screen with given String as title + (UINavigationBar*)myNavBar1: (NSString*)input { UIView *test = [[UIView alloc] initWithFrame:[[UIScreen mainScreen] applicationFrame]]; UINavigationBar *navBar = [[UINavigationBar alloc] initWithFrame:CGRectMake(0.0, 0.0, test.bounds.size.width, 45)]; navBar.tintColor = [SiteOneController myColor1]; UINavigationItem *navItem; navItem = [UINavigationItem alloc]; navItem.title = input; [navBar pushNavigationItem:navItem animated:false]; return navBar; } //-------------------------------------------------------------------------------------------// //-------------------------------------------------------------------------------------------// //-------------------------------------------------------------------------------------------// // Implement loadView to create a view hierarchy programmatically, without using a nib. - (void)loadView { //hard coded array of content for each site // CC NSMutableArray *allccContent = [[NSMutableArray alloc] init]; NSString *cc1 = @"House Model"; NSString *cc2 = @"James Dexter History"; [allccContent addObject: cc1]; [cc1 release]; [allccContent addObject: cc2]; [cc2 release]; // FC NSMutableArray *allfcContent = [[NSMutableArray alloc] init]; NSString *fc1 = @"Ghost House"; NSString *fc2 = @"Franklins Letters"; NSString *fc3 = @"Franklins Business"; [allfcContent addObject: fc1]; [fc1 release]; [allfcContent addObject: fc2]; [fc2 release]; [allfcContent addObject: fc3]; [fc3 release]; // PC NSMutableArray *allphContent = [[NSMutableArray alloc] init]; NSString *ph1 = @"Changing Occupancy"; NSString *ph2 = @"Sketches"; NSString *ph3 = @"Servant House"; NSString *ph4 = @"Monument"; NSString *ph5 = @"Virtual Model"; [allphContent addObject: ph1]; [ph1 release]; [allphContent addObject: ph2]; [ph2 release]; [allphContent addObject: ph3]; [ph3 release]; [allphContent addObject: ph4]; [ph4 release]; [allphContent addObject: ph5]; [ph5 release]; // Each content page's view //UIView *ccContent = [[UIView alloc] initWithFrame:[[UIScreen mainScreen] applicationFrame]]; UIView *fcContent = [[UIView alloc] initWithFrame:[[UIScreen mainScreen] applicationFrame]]; UIView *phContent = [[UIView alloc] initWithFrame:[[UIScreen mainScreen] applicationFrame]]; //ccContent.backgroundColor = [UIColor whiteColor]; fcContent.backgroundColor = [UIColor whiteColor]; phContent.backgroundColor = [UIColor whiteColor]; //[ccContent addSubview:[SiteOneController myNavBar1:@"Constitution Center Content"]]; [fcContent addSubview:[SiteOneController myNavBar1:@"Franklin Court Content"]]; [phContent addSubview:[SiteOneController myNavBar1:@"Presidents House Content"]]; //allocate the view self.view = [[UIView alloc] initWithFrame:[[UIScreen mainScreen] applicationFrame]]; //set the view's background color self.view.backgroundColor = [UIColor whiteColor]; [self.view addSubview:[SiteOneController myNavBar1:@"Sites"]]; NSMutableArray *sites = [[NSMutableArray alloc] init]; NSString *one = @"Constution Center"; NSString *two = @"Franklin Court"; NSString *three = @"Presidents House"; [sites addObject: one]; [one release]; [sites addObject: two]; [two release]; [sites addObject: three]; [three release]; NSString *ccName = @"Constitution Center"; NSString *fcName = @"Franklin Court"; NSString *element; int j = 0; for (element in sites) { UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom]; //setframe (where on screen) //separation is 15px past the width (45-30) button.frame = CGRectMake(a, b + (j*45), c, d); [button setTitle:element forState:UIControlStateNormal]; button.backgroundColor = [SiteOneController myColor1]; /*- (void) fooFirstInput:(NSString*) first secondInput:(NSString*) second { NSLog(@"Logs %@ then %@", first, second); } - (void) performMethodsViaSelectors { [self performSelector:@selector(fooNoInputs)]; [self performSelector:@selector(fooOneInput:) withObject:@"first"]; [self performSelector;@selector(fooFirstInput:secondInput:) withObject:@"first" withObject:@"second"];*/ //UIView *old = self.view; if (element == ccName) { [button addTarget:self action:@selector(showCCView) forControlEvents:UIControlEventTouchUpInside]; } else if (element == fcName) { } else { } [self.view addSubview: button]; j++; } } // This method show the content views for each of the sites. /*+ (void) showCCView { self.view = [SiteOneController ccContent]; }*/

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