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  • Detect if NSString contains a URL and generate a "link" to open inside the app a Safari View

    - by Cy
    I have am reading a twitter feed in my iPhone application and can do it correctly, but I'd like to evolve it in a way to detect if the whole NSString contains any URL or URLs and create a "link" that will open a UIWebView within the same application. Can you guide me on how to perform this task? -(void) setTextTwitter:(NSString *)text WithDate:(NSString*)date { [text retain]; [textTwitter release], textTwitter = nil; textTwitter = text; [date retain]; [dateTwitter release], dateTwitter = nil; dateTwitter = date; [self setNeedsDisplay]; }

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  • How do I get more control of UIImageView animation?

    - by Pickles
    I'm trying to display a series of images in a animation where the duration between the images changes frame to frame. I can successfully animate images where the duration is the same. I've looked into subclassing UIImageView but it doesn't seem to allow you access anything that could be helpful. I've also looked into subclassing UIView directly but it seems like I'd have to write a lot of the stuff that UIImageView already does for me. Is there a way to do this with UIImageView? Or if I am going to have to build my own UIView animation can someone point me the right direction to get started? Thanks.

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  • How to write multiple files from one NSData object?

    - by Kevin Cupp
    Hi there! I'm writing an iPhone app that includes in-app purchasing. It downloads a zip file, then I unzip the file using the popular NSData category (zlibDeflate) which outputs the uncompressed file into an NSData object. The zip file contains multiple files in it which I need to write to the Documents directory. How can I write each file separately from this one NSData object? writeToFile just writes the whole thing to one file. Thank you and let me know if you need any more information.

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  • can I use NSDictionary values as [@"[array abjectAtIndex:value]", key1,nil] ?

    - by srikanth rongali
    I have a string of comma separated values in this way (0.2,0.3,0.4,1.0). I used componentsSeperatedByString to store the values in an NSArray. Now I need to store them in NSDictionary as (1st value from NSArray), key1, (2nd Value of NsArray), key2,..nil]; My program is in this way NSArray *split1; NSDictionary *enemy1; float value1; for(id line in lines) { string1 = line; split1 = [string1 componentsSeparatedByString:@","]; numberOfValues = [split1 count]; for(id value in split1) { enemy1 = [NSDictionary dictionaryWithObjectsAndKeys:@"[[split1 objectAtIndex:0]flaotValue]", @"A1", nil]; } } value1 = [enemy1 objectForKey:@"A1"]; Here lines is an NSArray consisting of CSV strings of number 10. I am getting error as error: incompatible types in assignment Should I do not write my code in this way? Where I doing wrong ? Please tell me my mistakes. Thank You.

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  • Why can't I call my doSomething method?

    - by Tattat
    This is my DrawSomethingCmd: #import "Command.h"; @interface DrawSomethingCmd : Command { } -(void)doSomething; -(void)execute; @end and the DrawSomethingCmd.m's doSomething method is: -(void)doSomething{ NSLog(@"did"); } The Command.h: #import <Foundation/Foundation.h> @interface Command : NSObject { } -(void)execute; And Command.m: #import "Command.h" @implementation Command -(id)init{ return self; } -(void)execute{ } @end And I have a method like this: DrawSomethingCmd *tempCmd = [[DrawSomethingCmd alloc] init]; [tempCmd doSomething]; But my console didn't show anything. What's going on?

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  • Which way to store this data is effective?

    - by Tattat
    I am writing a game, which need a map, and I want to store the map. The first thing I can think of, is using a 2D-array. But the problem is what data should I store in the 2D-array. The player can tap different place to have different reaction. So, I am thinking store a 2D-array with objects, when player click some position, and I find it in the array, and use the object in that array to execute a cmd. But I have a concern that storing lots of object may use lots of memory. So, I am think storing char/int only. But it seems that not enough for me. I want to store the data like that: { Type:1 Color:Green } No matter what color is, if they are all type 1, the have same reactions in logic, but the visual effect is based on the color. So, it is not easy to store using a prue char/int data, unless I make something like this: 1-5 --> all type 1. 1=color green , 2=color red, 3 = color yellow.... ... 6-10 --> all type 2. 2 = color green, 2 = color red ... ... So, do you have any ideas on how to minimize the ram use, but also easy for me to read... ...thx

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  • Is it possible to Prevent TO fileld to be edit in MFMailComposeViewController

    - by mihirpmehta
    in my Application i am using MFMailComposeViewController for emails... I am Adding to Field in it programmaticly... I want To prevent user to edit the TO field, User can't change TO field's email address... I am not able to find neither i know if it is possible or not It is not necessary but still code is NSArray *arr = [NSArray arrayWithObject:Emailstr]; MFMailComposeViewController* controller = [[MFMailComposeViewController alloc] init]; controller.mailComposeDelegate = self; [controller setToRecipients:arr]; [controller [controller setMessageBody:@"Hello there." isHTML:NO]; [self presentModalViewController:controller animated:YES];

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  • How to use accessors within the same class in Objective C?

    - by Azeworai
    Hi, I have a few properties defined in my header file like so @property (assign) bool connectivity_N; @property (assign) bool isConnected_N; In my implementation file I have an init and the synthesized properties like so @implementation Map @synthesize connectivity_N; @synthesize isConnected_N; a init to set the initial values like so -(id) init { if( (self=[super init]) ) { //initialise default properties self.connectivity_N=NO; self.isConnected_N=NO; } return self; } I'm running into an error that states Error: accessing unknown 'connectivity_N' class method. In this public method within the class +(bool) isConnectable:(directions) theDirection{ bool isTheDirectionConnectable= NO; switch (theDirection) { case north: isTheDirectionConnectable= self.connectivity_N; break; I'm not sure why is this so as I'm trying to grab the value of the property. According to the apple developer documentation "The default names for the getter and setter methods associated with a property are propertyName and setPropertyName: respectively—for example, given a property “foo”, the accessors would be foo and setFoo:" That has given me a clue that I've done something wrong here, I'm fairly new to objective C so would appreciate anyone who spends the time to explain this to me. Thanks!

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  • How can we show the preview image of the video in table view cell ?

    - by srikanth rongali
    I have a table view and if we touch a cell a video plays. I need to show the preview image of the video in the UITableViewCell. I have kept some dummy image in the cell at image place and remaining space ion cell is with some labels and buttons. I need the image preview of the video with play symbol on it. How can I make this ? Should I use any photoshop type of things or any programable things. I do not know photoshop. Thank You.

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  • How do I use a contact's photo in a table view cell?

    - by Andy
    I've got an app that has a table view that displays contact information in each row. I'd like to use the contact's stored image (if there is one available) as the image on the left-hand side of the cell. I've found some sketchy sample code in Apple's documentation, but the address book references some kind of weird data type (CFDataRef) that doesn't appear to correspond to the data types referenced in the table view programming guide (mainly UIImage). This seems like a pretty basic task, but I can't seem to wrap my head around it. Thanks in advance for any help you can offer.

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  • queued view updates not happening when performSelector afterDelay:0 used

    - by JosephH
    Hi all, I have an app that performs some calculations based on data arriving on a socket or local user interaction. I want to show an 'activity spinner' whilst the calculation happens. spinner = [[UIActivityIndiactorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhiteLarge]; [spinner setCenter:self.view.center]; [self.view addSubview:spinner]; [spinner startAnimating]; [self performSelector:@selector(doCalcs) withObject:nil afterDelay:0]; This works well, except in the case where the code is run as a result of a message arriving over the network. I'm using http://code.google.com/p/cocoaasyncsocket/ to handle sockets and the code is running in the onSocket:didReadData:withTag: method. 'doCalcs' takes a few seconds. The spinner doesn't appear whilst it's running. If I change afterDelay:0 to afterDelay:1 then the spinner does appear the whole time doCalcs is running, but with the downside that it takes an extra second. So it seems the code is all correct, but for whatever reason the spinner isn't getting a chance to get on screen before doCalcs runs. Any suggestions would be most welcome.

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  • set Width & Height alone on Views in iPhone Development

    - by ChethanRao
    Hey guys, I am working on an iPhone project where i need to change the width and height of a UIImageView dynamically. I have come across CGPointMake to change x & y positions alone, but what should i use for changing width & height alone??. There's something called CGSizeMake but i am not able to make it work. Can someone help...any idea abt this....???.. Thanks.

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  • Saving core data in a thread, how to ensure its done writing before quitting?

    - by Shizam
    So I'm saving small images to core data which take a really short amount of time to save, like .2 seconds but I'm doing it while the user is flipping through a scroll view so in order to improve responsiveness I'm moving the saving to a thread. This works great, everything gets saved and the app is responsive. However, there is one thing in the core-data + multithreading doco that worries me: "In Cocoa, only the main thread is not-detached. If you need to save on other threads, you must write additional code such that the main thread prevents the application from quitting until all the save operation is complete." Ok, how do you do that? It only needs to last ~ .2 seconds and its rarely going to happen since the chance of the app quitting as something is saving is very low. How do I run something on the main thread that'll prevent the app from quitting AND not block the gui? Thanks

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  • How to run a widget inside of an activity in Android?

    - by user220755
    I have a widget built to give the user the chance to choose the date (I did not build it, I am building on top of an open source software). Now, I need to display this widget inside of a class that extends the activity class in Android. Let me show some code. Let us say this is the activity class: public class RandomClass extends Activity { public void onCreate(Bundle savedInstanceState) { // I want to run the widget here when the class is created // (the activity is created) } } The widget i want to run is a widget that lets the user choose the date. I know I code use one of Android's activities but I need to build on top of the code so I have to run it inside of the activity class I created. Sorry if this is not clear, ask any questions and i will be more than glad to answer them and clarify.

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  • How to call a method in init method ?

    - by srikanth rongali
    My program looks like this: -(id)init { if ( (self = [super init]) ) { //TargetWithActions *targetActions= [[TargetWithActions alloc] init]; [self countDownSpeed123]; } return self; } -(void)countDownSpeed123 { countDownSpeed = 5.0f; } @end warning: 'TargetWithActions' may not respond to '-countDownSpeed123' I am getting the warning in this way. Where I am wrong in my program. Please explain ? Thank You.

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  • import pictures from the iphone photos storage to the canvas within uiwebview

    - by How2iphone
    I am currently experimenting with canvas drawing function in a uiwebview.Its a simple app that allows you to finger paint on the Iphone.Can someone point me in the rite direction on a problem I'm having.I need to be able to import pictures from the photos storage to the canvas within the uiwebview.Its built on Html,javascript and css.Would prefer to use objective C in xcode to acomplish this.Any ideas would be greatly appreciated.

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  • Converting &amp; to & in Objective-C

    - by nbojja
    Hi All, I have a URL string in the following format. http://myserver.com/_layouts/feed.aspx?xsl=4&amp;web=%2F&amp;page=dda3fd10-c776-4d69-8c55-2f1c74b343e2&amp;wp=476f174a-82df-4611-a3df-e13255d97533 I want to replace &amp; with & in the above URL. My result should be: http://myserver.com/_layouts/feed.aspx?xsl=4&web=%2F&page=dda3fd10-c776-4d69-8c55-2f1c74b343e2&amp;wp=476f174a-82df-4611-a3df-e13255d97533 Can someone post me the code to get this done? Thanks

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  • Error with custom Class definition in protocol

    - by Greg
    I'm trying to set up a custom delegate protocol and am getting a strange error that I don't understand. I wonder if someone could point out what I'm doing wrong here (I'm still new to Ob-C and protocol use)... The situation is that I've built my own URLLoader class to manage loading and parsing data from the internet. I'm now trying to set up a protocol for delegates to implement that will respond to the URLLoader's events. So, below is my protocol... #import <UIKit/UIKit.h> #import "URLLoader.h" /** * Protocol for delegates that will respond to a load. */ @protocol URLLoadResponder <NSObject> - (void)loadDidComplete:(URLLoader *)loader; - (void)loadDidFail:(URLLoader *)loader withError:(NSString *)error; @end However, I'm getting the following error for both method signatures: Expected ')' before 'URLLoader' I feel like I must be overlooking something small and silly. Any help folks could offer would be greatly appreciated! Whoops ... it was pointed out that I should include URLLoader.h. Here it is: #import <Foundation/Foundation.h> #import "URLLoadResponder.h" /** * URLLoader inferface. */ @interface URLLoader : NSObject { NSString *name; NSString *loadedData; NSMutableData *responseData; NSObject *delegate; BOOL _isLoaded; } @property (nonatomic, retain) NSString *name; @property (nonatomic, retain) NSString *loadedData; @property (nonatomic, retain) NSObject *delegate; - (void)loadFromURL:(NSString *)url; - (void)addCompleteListener:(id)observer selector:(SEL)sel; - (void)removeCompleteListener:(id)observer; - (void)parseLoadedData:(NSString *)data; - (void)complete; - (void)close; - (BOOL)isLoaded; + (NSURL *)makeUrlWithString:(NSString *)url; + (URLLoader *)initWithName:(NSString *)name; @end

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  • Image animation over CGContextDrawPDFPage

    - by BittenApple
    I have a pdf page displayed with CGContextDrawPDFPage. I want to keep this page shown and have an image slide in from top over this page, just as it can be seen in the iBooks application. It's a book, the sliding image is a bookmark that slides in when you are about to close the book. What is the best way to go about implementing this?

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  • Need help/guidance about creating a desktop application with gui

    - by Somebody still uses you MS-DOS
    I'm planning to do an Desktop application using Python, to learn some Desktop concepts. I'm going to use GTK or Qt, I still haven't decided which one. Fact is: I would like to create an application with the possibility to be called from command line, AND using a GUI. So it would be useful for cmd fans, and GUI users as well. It would be interesting to create a web interface too in the future, so it could be run in a server somewhere using an html interface created with a template language. I'm thinking about two approaches: - Creating a "model" with a simple interface which is called from a desktop/web implementation; - Creating a "model" with an html interface, and embeb a browser component so I could reuse all the code in both desktop/web scenarios. My question is: which exactly concepts are involved in this project? What advantages/disadvantages each approach has? Are they possible? By naming "interface", I'm planning to just do some interfaces.py files with def calls. Is this a bad approach? I would like to know some book recommendations, or resources to both options - or source code from projects which share the same GUI/cmd/web goals I'm after. Thanks in advance!

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  • NavigationControllers navigationbar hidden problem

    - by Infinity
    Hello guys! I would like to hide the navigationbar with this code: [self.navigationController setNavigationBarHidden:navbarAndToolbarHidden animated:YES]; Do you see? It is animated, but it doesn't animated when I check... Also I tried to do this with toolbar with this code [self.navigationController setToolbarHidden:navbarAndToolbarHidden animated:YES]; and it works perfectly. Any idea how to fix this?

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