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  • Objective-C Basic class related question, retaining the value of a specific object using a class fil

    - by von steiner
    Members, scholars, code gurus. My background is far from any computer programming thus my question may seems basic and somewhat trivial to you. Nevertheless it seems that I can't put my head around it. I have googled and searched for the answer, just to get myself confused even more. With that, I would kindly ask for a simple explanation suitable for a non technical person such as myself and for other alike arriving to this thread. I have left a comment with the text "Here is the issue" below, referring to my question. // character.h #import <Foundation/Foundation.h> @interface character : NSObject { NSString *name; int hitPoints; int armorClass; } @property (nonatomic,retain) NSString *name; @property int hitPoints,armorClass; -(void)giveCharacterInfo; @end // character.m #import "character.h" @implementation character @synthesize name,hitPoints,armorClass; -(void)giveCharacterInfo{ NSLog(@"name:%@ HP:%i AC:%i",name,hitPoints,armorClass); } @end // ClassAtLastViewController.h #import <UIKit/UIKit.h> @interface ClassAtLastViewController : UIViewController { } -(void)callAgain; @end // ClassAtLastViewController.m #import "ClassAtLastViewController.h" #import "character.h" @implementation ClassAtLastViewController - (void)viewDidLoad { //[super viewDidLoad]; character *player = [[character alloc]init]; player.name = @"Minsc"; player.hitPoints = 140; player.armorClass = 10; [player giveCharacterInfo]; [player release]; // Up until here, All peachy! [self performSelector:@selector(callAgain) withObject:nil afterDelay:2.0]; } -(void)callAgain{ // Here is the issue, I assume that since I init the player again I loss everything // Q1. I loss all the data I set above, where is it than? // Q2. What is the proper way to implement this character *player = [[character alloc]init]; [player giveCharacterInfo]; } Many thanks in advance, Kindly remember that my background is more related to Salmons breeding than to computer code, try and lower your answer to my level if it's all the same to you.

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  • release vs setting-to-nil to free memory

    - by Dan Ray
    In my root view controller, in my didReceiveMemoryWarning method, I go through a couple data structures (which I keep in a global singleton called DataManager), and ditch the heaviest things I've got--one or maybe two images associated with possibly twenty or thirty or more data records. Right now I'm going through and setting those to nil. I'm also setting myself a boolean flag so that various view controllers that need this data can easily know to reload. Thusly: DataManager *data = [DataManager sharedDataManager]; for (Event *event in data.eventList) { event.image = nil; event.thumbnail = nil; } for (WondrMark *mark in data.wondrMarks) { mark.image = nil; } [DataManager sharedDataManager].cleanedMemory = YES; Today I'm thinking, though... and I'm not actually sure all that allocated memory is really being freed when I do that. Should I instead release those images and maybe hit them with a new alloc and init when I need them again later?

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  • Best FTP wrapper for iPhone

    - by jamone
    I know you use the C based networking API to do FTP communication but I'd prefer to use something a little higher level. I've seen a few Objective-C based wrappers but I'm not sure what to use. I don't need that complex of FTP interaction. Its just the typical create/delete dirs, upload/download files... What do you recommend?

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  • How to call a method of a specific class from another class (created in this specific class) ?

    - by choise
    I created a TTModelViewController. in the createModel Method i created a TTURLRequestModel. after Loading content in the TTURLRequestModel i want to call a method in my TTModelViewController. TTModelViewController - (void) createModel { requestModel = [[singlePostModel alloc] initWithId:@"54"]; } - (void)didLoadModel:(BOOL)firstTime { NSLog(@"loaded"); } TTURLRequestModel (singlePostModel) - (void)requestDidFinishLoad:(TTURLRequest*)request { //doing something [super requestDidFinishLoad:request]; } first i thought "didLoadModel" gets called after requestDidFinishLoad was called, but its before. So, how can i call a method in my TTModelViewController after request is finished loading? is there a method that already does that and i only have to overwrite this? or something else? thanks // if knowbody knows how to do this with three20, anybody can tell me how to do this in general?

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  • vs2010 wpf c#: how to get friends list from facebook? (Desktop application)

    - by Ash
    As per this link code from stack overflow i have try this code for getting friendslist but after login i got this error "requires valid signature" string APIKey = ConfigurationManager.AppSettings["API_Key"]; string APISecret = ConfigurationManager.AppSettings["API_Secret"]; Facebook.Session.ConnectSession connectsession = new Facebook.Session.ConnectSession(APIKey, APISecret); Facebook.Rest.Api api = new Facebook.Rest.Api(connectsession); var friends = api.Friends.GetLists(); foreach (var friend in friends) { System.Console.WriteLine(friend.name); } guide me to find out the solution Thanks ash

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  • Releasing dynamically added UILabel.

    - by coure06
    I am adding a no. of UILable dynamically to my view like this UILabel *test = [[UILabel alloc] initWithFrame:CGRectMake(x, y, 50, 50)]; [self.view addSubview:tick]; Is it necessary to release these UILabel from memory in viewDidUnLoad and dealloc, if yes how i will release them? how i will get their reference?

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  • Real world goods in iPhone app?

    - by Moshe
    I've seen questions asked here before, but they do not address the issue. That said: "In App Purchases" specifically may not be real world goods or services, according to Apple. What services allow integration with iPhone apps so that I can use ObjectiveC to sell things in an iPhone app?

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  • UIWebView comparing current and defined URL's with a loop depending on result

    - by Syleron
    I am trying to compare the current url in webView with a defined url say google.com so in theory.. NSURLRequest *currentRequest = [webView request]; NSURL *currentURL = [currentRequest URL]; would give us our current url... NSString *newurl = @"http://www.google.com"; this would give us the compared to defined url while (!currentURL == newurl) { //do whatever here because currentURL does not equal the newurl } This does not seem to work though.. solutions?

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  • stop execution of process for miliseconds.

    - by Viral
    hi friends, I m creating a Tic tac toe game, in that after click made by user automatically the cpu will respond. I want the cpu response after 0.50 seconds, the sleep() function takes too many time, i don't want that much time, is there any other way to do so???

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  • Urban Airship - not receving push notifications on device?

    - by Silent
    Hey guys just installed everything to my app tried to push but no messages appear the token for my device is saved so thats working, when i push the website says it sent but no message on device. Right now im using production certificate for push notification with a developer pervision and not the distrubution certificate. I tried cleaning the build and reinstalling but no luck since an extra app was installed from the same one. I used the code that is on the sample file tutorial i think thats all the detail dont know what to do next.

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  • Where is the best place to run initialization code for a UITabBarController?

    - by bobobobo
    I have a UITabBarController in my application. I have to perform some customization to the NIB file using code the first time a view embedded in that UITabBarController gets loaded. When applicationDidFinishLaunching occurs, the UITabBarController's views apparently are not loaded -- if I try to modify the view controllers inside a tab bar that the tab bar is to load in applicationDidFinishLaunching, then those changes are ignored. I'm assuming this is because the tab bar didn't finish loading yet. So, I need a good place to put code that will run immediately after a tabbar is fully ready -- i.e. after it has loaded all the views from their respective nib files. I'm finding the only place I can do this is to track the first time viewDidAppear on each individual view controller. Note I can't use viewWillAppear because I need the value of tabBarController.selectedIndex to be accurate, and it is only actually updated after viewDidAppear gets fired, not when viewWillAppear gets fired.

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  • Add organization details in contact list

    - by Nemat
    Hi Friends..... I have to add organization details in contacts.Here is my code: Uri newPersonUri = null; ContentValues personValues = new ContentValues(); // Add name and get its Uri personValues.put(People.NAME, arrValues[0] + " " + arrValues[1]); personValues.put(People.STARRED, 0); // STARRED 0 = Contacts, 1 = Favorites personValues.put(People.NOTES, arrValues[9]); //add notes newPersonUri = context.getContentResolver().insert(android.provider.Contacts.People.CONTENT_URI, personValues); ContentValues organisationValues = new ContentValues(); Uri orgUri = Uri.withAppendedPath(newPersonUri, android.provider.Contacts.Organizations.CONTENT_DIRECTORY); //Uri orgUri =Uri.withAppendedPath(newPersonUri, "organizations"); organisationValues.clear(); organisationValues.put(Organizations.COMPANY, arrValues[10]); organisationValues.put(Organizations.TITLE, arrValues[11]); organisationValues.put(Organizations.TYPE, Organizations.TYPE_WORK); objContext.getContentResolver().insert(orgUri, organisationValues); It works fine in some phones but in some phones it gives "java.lang.UnsupportedOperationException: Unknown uri: content://contacts/people/201/organizations" What can be the reason..... Any help will be appreciated!!!! Thanks in Advance Nemat

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  • How can I simply change a class variable from another class in ObjectiveC?

    - by Daniel
    I simply want to change a variable of an object from another class. I can compile without a problem, but my variable always is set to 'null'. I used the following code: Object.h: @interface Object : NSObject { //... NSString *color; //... } @property(nonatomic, retain) NSString* color; + (id)Object; - (void)setColor:(NSString*)col; - (NSString*)getColor; @end Object.m: +(id)Object{ return [[[Object alloc] init] autorelease]; } - (void)setColor:(NSString*)col { self.color = col; } - (NSString*)getColor { return self.color; } MyViewController.h #import "Object.h" @interface ClassesTestViewController : UIViewController { Object *myObject; UILabel *label1; } @property UILabel *label1; @property (assign) Object *myObject; @end MyViewController.m: #import "Object.h" @implementation MyViewController @synthesize myObject; - (void)viewDidLoad { [myObject setColor:@"red"]; NSLog(@"Color = %@", [myObject getColor]); [super viewDidLoad]; } The NSLog message is always Color = (null) I tried many different ways to solve this problem, but no success. Any help would be appreciated.

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  • Android Force Recycle Large Bitmap?

    - by GuyNoir
    From another stackoverflow question, it seems that Android handles large bitmaps differently than other memory. It also seems like there is a way to force Android to recycle the bitmaps to free up memory. Can anyone enlighten me on how to do this. My application uses 2-6 huge bitmaps at all times, so it nearly kills the phone's memory when running, and I want to clear it up when the user quits.

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  • Back button of Navigation Controller does not work!

    - by JosephH
    For some reason, if I try to go back to the main menu using the back button on the upper left corner, only the title returns to the previous menu, but not the view controller. View controller would return to the previous menu only if I explicitly call popViewControllerAnimated using some other button. Is there anyway to solve this? I think I've coded something wrong. Tried googling but couldn't find any cases like mine.

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  • Android OS 2.2 Permissions: I have absolutely no idea why this simple piece of code doesn't work. Wh

    - by Kevin
    I'm just playing around with some code. I create an Activity and simply do something like this: long lo = currentTimeMillis(); System.out.println(lo); lo *= 3; System.out.println(lo); SystemClock.setCurrentTimeMillis(lo); System.out.println( currentTimeMillis() ); Yes, in my AndroidManifest.xml, I've added: <uses-permission android:name="android.permission.SET_TIME"></uses-permission> <uses-permission android:name="android.permission.SET_TIME_ZONE"></uses-permission> Nothing changes. The SystemClock is never reset...it just keeps on ticking. The error that I'm getting just says that the permission "SET_TIME" was not granted to the program. Protection level 3. The permissions are there...and in the API for 2.2 it says that this feature is supported now. I have no idea what I'm doing wrong. If android.content.Intent; comes into play, please explain. I don't really understand what the idea behind intents! Thanks for any help!

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  • Start one functon after another finished iphone

    - by user295944
    I have a function that updates the gps coordinate lat and long then sends a tweet with the lat and long info attached. I want the function to wait until the lat and long are filled before the tweet goes through but it seems to do both at the same time so the lat and long don't get filled in. How do I make the gps location update first?

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  • Iphone geo location permission check

    - by Johnny Mast
    Dear Developers, Hi i have a quick question about the iphone (iOS) geolocation api's. Currenly i have a map in my application and the operating system will ask the user if it wants to allow the use of geolocations. Now thats all nice but the thing is i want to change my app when geolocations is allowed to a so called "Geo location" mode where new options are available or "standard" mode with less ui elements when permissions are not granted. What can i use to check if permission is granted?. So basicaly is that an api that tells me permission granted yes or no.

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  • Most efficient way to download media files from a server from within an iPhone app.

    - by nikki
    Hi, I have an iPhone application which contains a lot of media files, so far we have been able to keep the size of the iPhone app to less than 20 MB. We add new content with new updates, it would be difficult to keep the app size within the 20 MB limit. The right thing to do here would be to fetch the files on demand from a media/web server. If you have any pointers on how to go about doing this, please suggest. What we would need is to fetch the media files (.jpg/.png images ) on demand when the user taps on a small thumbnail for the image. Are there existing frameworks/servers that provide such services to iPhone clients. Thanks.

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