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• coding on back button of navigation based application??

  - by hemant

  In one view during a function call i am assigning 1 to a flag...when i navigate back to previous view i want the the flag value to be retained to that view...how cAn i do coding on the button that appears on the screen to navigate back to the previous screen might be able to do it or is there any better solution???

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• "reset" cells after changing orientation

  - by Christian

  Hi, I added the interfaceOrientation to my app. It works fine concerning the views. Some of the table-cells I defined by CGRects to position the text in the cell. In portrait-mode the cell is 300px long, in landscape-mode 420px. I use the following code to change the CGRects depending the orientation: - (UITableViewCell *)tableView:(UITableView…

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• size of an image

  - by Mike

  From times to times I have to know the width and height of images. I am using the following code: UIImage *imageU = [UIImage imageWithContentsOfFile:[[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:@"myImage.png"]]; CGFloat imageW = CGImageGetWidth(imageU.CGImage); CGFloat imageH = CGImageGetHeight(imageU.CGImage); My…

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• Concise (yet still expressive) C++ syntax to invoke base class methods

  - by ShaChris23

  I want to specifically invoke the base class method; what's the most concise way to do this? For example: class Base { public: bool operator != (Base&); }; class Child : public Base { public: bool operator != (Child& child_) { if(Base::operator!=(child_)) // Is there a more concise syntax than this? return true; …

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• Cell Dequeue problem when table inside another table's cell content view

  - by Shailesh Kanzariya

  I am using two table views (Main Table and Sub Table), one table inside other's cell. I am adding Sub Table in Main Table's cell content view. I am also using different Cell Identifier for both table cells. Now, issue is : When - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath is…

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• using a test account for in app purchases??

  - by hemant

  i created in app purchases in my application.But still my test account doesn’t work fine. When i test my application using test account the sandbox environment asks me to buy the product and after buying it asks me to buy the product again straightaway. Is it some problem while using test accounts or is there a problem in my coding??…

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• make background dull while displaying activity indicator ??

  - by hemant

  while restoring some data i am displaying a activity indicator..but i want the background image to become dull or dim a bit so that the focus is on activity indicator..i have seen that in some applications but cant figure out how to achieve that??

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• How do you make a private member in the base class become a public member in the base class?

  - by jasonline

  Consider the following code: class Base { void f() { } }; class Derived: public Base { public: }; What can you change in the derived class, such that you can perform the following: Derived d; d.f(); If the member is declared as public in the base class, adding a using declaration for Base::f in the derived class public…

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• How to write to an XML file from the iPad OS?

  - by user345474

  I am developing an app for IPad, and I need to modify several attributes in a XML file at runtime. I found the class NSXMLDocument, http://developer.apple.com/mac/library/documentation/cocoa/reference/foundation/Classes/NSXMLDocument_Class/Reference/Reference.html But I haven't been able to import it to my project. Is this class…

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• One label, two different fonts?

  - by 4thSpace

  I need to format text in a label like this: username: some text from this user. This will create additional lines of text that will go on and on and on. Where "username" is bold. This will go into a UILabel, which is in a custom table cell. Is there a way to get this type of layout?

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• Displaying a "Loading..." screen in a UITableView like the AppStore App...

  - by Mugunth Kumar

  the App Store app and fairly a lot many apps display a view that says "Loading.." while the content is being retrieved. How can we do this? Should I remove the UITableView and call addSubView and then once the data is available, add the tableview back? Or is there any other shortcut? If my question is not clear, please see this…

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• Why am I losing precision when populating an NSDecimalNumber with a double?

  - by Mike

  Here is a simple code that shows what I think is a bug when dealing with double numbers... double wtf = 36.76662445068359375000; id xxx = [NSDecimalNumber numberWithDouble: wtf]; NSString *myBug = [xxx stringValue]; NSLog(@"%.20f", wtf); NSLog(@"%@", myBug); NSLog(@"-------\n"); the terminal will show two different numbers …

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• Obj-C crashes on substringWithRange message

  - by code_burgar

  The following code is making my app crash at line 3 without an error I would recognize or know how to deal with. Any ideas as to what I am doing wrong? NSInteger *match = [str1 intValue] + [str2 intValue]; NSString *strrep = [NSString stringWithFormat:@"%i", match]; label.text = [strrep substringWithRange:NSMakeRange(1,3)];

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• Users adding views

  - by adamprocter

  I have created a main page (myAppViewController) and a add page rect button I have also created a page template (TemplateAViewController) all set up in Interface builder. I would like users to be able to add as many templates themselves and then page through them. I am not sure where to start. I can create views programmatic…

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• Stubborn UIButton

  - by Mike

  I have a UIButton that is supposed to be disabled during certain phases. So, when this happens I do [myButton setEnabled:NO]; This is perfect because the button stays grayed and if clicked will not trigger its action, but... when the button is clicked even grayed, it enables again and a second click will trigger its…

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• preventing a specific view from auto rotating... is that possible?

  - by Mike

  I have a view based app. Its self.view has several subviews and shouldAutorotateToInterfaceOrientation is returning YES. When I rotate the device, all views rotate as expected. Is that possible to prevent a subview from auto rotating even if the view's parent is auto rotating?

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• cocoa - referencing a method on the parent

  - by Mike

  I had a method on my main view controller named "calculateThis". This method was run, obviously, as int newValue = [self calculateThis:myVariable]; when I run it from inside the view controller. Then I created a static class and I need to run this method from there. How do I reference this method from that class…

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• How to sort numbers in array from low to high

  - by Louie

  Hello all, I am trying to sort an array of prices from low to high. I have it working but not the way I want it to. Long story short, the sorter is putting numbers in order like this: 100 10900 200 290 instead of sorting like this 100 200 290 10900 here is my code I am doing this with. -(void)filterPriceLowHigh {…

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• testing an in app purchase??

  - by hemant

  i developed a application with in app purchases..when user buys the subscription it gets stored on my server..after testing it few times i deleted the data from server to test it again but when i buy it the sandbox environment says u you already purchased this.TAP OK to download it again for free also i have…

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• How to blur image while downloading? ( Like Facebook does )

  - by Louie

  Can anyone point me in the direction of blurring an image while the rest of it downloads? Its almost as if Facebook is downloading a percentage of the image, then blurs it while the rest is downloading? if that makes sense..? Thanks in advance!

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• Why need to call NSTimer again in this code?

  - by Tattat

  - (void) applicationDidFinishLaunching:(UIApplication *)application { //set up main loop [NSTimer scheduledTimerWithTimeInterval:0.033 target:self selector:@selector(gameLoop:) userInfo:nil repeats:NO]; //create instance of the first GameState [self doStateChange:[gsMain class]]; } -…

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• Add number of days to a date and calculate the end date?

  - by user355911

  How can I calculate the number of days from a specific date?in other words add number of days to a date. I looked up NSCalendar and NSdate and could not find anything specific to that regards.

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• How do I populate an NSMutableArray in one class with another object?

  - by AngeloS

  Hello, I know this is a simple answer, but I can't seem to find the solution. I created an object in its own class and I am trying to populate it with data from another class. For simple data types like NSString, I have no problem, but when trying make an NSMutableArray equal to another NSMutableArray or when…

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• how to determine when two NSDates are 1 week apart?

  - by cgossain

  I'm my app I have an NSMutableArray, and each entry has an NSMutableDictionary with several Key-Value pairs. One of these pairs contains the date of the entry. For one of the functions of my app I need to determine which entries are exactly 1 week apart from each other (i.e from Sunday to Saturday) and sum the…

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• How do I get the time when the Location has been updated in Android?

  - by Pentium10

  As you know we can get thast Last Known Location, but how do we get the time when that has changed?

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