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  • Remove Substring from NSstring

    - by user3037815
    I see so many solution , but none of them was matching my problem . As i am new to iOS development . I have a String abc/_api/web/GetFolderByServerRelativeUrl('Documents/Root Folder/Level 1/Level 2/Level 1-1/Level 1/')/folders. I want to remove Remove Substring after last "/" for example my new string should look like this. abc/_api/web/GetFolderByServerRelativeUrl('Documents/Root Folder/Level 1/Level 2/Level 1-1/Level 1/) Can someone suggest me the best way to achieve this , thanks ,

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  • Can we use (id) in if- else condition ?

    - by srikanth rongali
    I have written my code in following way in cocos2d. id actionTo = [CCFadeOut actionWithDuration:4.0f]; id actionTo0 = [CCSequence actionWithDuration:2.0f]; if (m < enemyNumber) id actionTo1 = [CCCallFunc actionWithTarget:self selector:@selector(goToNextScene)]; else id actionTo1 = [CCCallFunc actionWithTarget:self selector:@selector(goToEndScene)]; id actionSeq = [CCSequence actions:actionTo, actionTo0, actionTo1, nil]; [targetE runAction: [CCSequence actions:actionSeq, nil]]; error: expected expression before 'id' I am getting the above error. Should not we use (id) in if condition ? I want to get called two selectors by using the if- else condition. How can I make it ? Thank You.

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  • Starting a SKProductsRequest gives -[_NSCFArray length] invalid selector error a moment later. LoadMicroPaymentsProductsOperation error.

    - by quantumpotato
    I'm fetching a list of identifiers from my server, then passing them off in a products request to Apple. Here's my code, and below is the error I'm getting. The iPhone 4 is not crashing when this happens. -(void)didReceiveData:(NSArray *)data { NSLog(@"Received Identifiers: %@",data); NSSet *productIdentifiers = [NSSet setWithArray:data]; SKProductsRequest *productsRequest = [[SKProductsRequest alloc] initWithProductIdentifiers:productIdentifiers]; productsRequest.delegate = self; [productsRequest start]; NSLog(@"productsRequest should have started by now"); } Wed Dec 29 09:42:14 iPhone XXXX-iphone[6363] <Warning>: Received Identifiers: ( ( 1, 10, "com.XXXX.XXXX.10" ) ) Wed Dec 29 09:42:14 iPhone XXXX-iphone[6363] <Warning>: productsRequest should have started by now Wed Dec 29 09:42:18 iPhone itunesstored[6367] : -[__NSCFArray length]: unrecognized selector sent to instance 0x119070 Wed Dec 29 09:42:18 iPhone itunesstored[6367] : caught -[__NSCFArray length]: unrecognized selector sent to instance 0x119070 exception with stack trace: (0x33ac0975 0x3347b49d 0x33ac2133 0x33a69aa9 0x33a69860 0x2717b 0x27515 0x31469651 0x314693ed 0x31469e39 0x3362795f 0x336276c3 0x3363c4eb 0x33c32680 0x33c32ba0 0x33bd7251 0x33bcf978)

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  • How to find out the format of a float?

    - by cannyboy
    I'm working with someone else's code, and there is a float with some unusual qualities. If I output the float using: NSLog(@"theFloat: %f", record.theFloat); I get: theFloat: 0.000000 However, if I use: NSLog(@"(int)theFloat = %i", (int) record.theFloat); I get: (int)theFloat: 71411232 How do I discover the real format and value of theFloat? I know that it should contain a large number. Incidentally, the Record class which contains the float propertizes it in such a way: @property (assign) float* theFloat; There is also floatLength: @property (assign) int floatLength; And has this method, which seems to indicate that the float is of variable length (?): - (void) copyFloat:(float*)theF ofLength:(int)len { float *floatcopy = malloc(len*sizeof(float)); memcpy(floatcopy, theF, len*sizeof(float)); self.theFloat = floatcopy; }

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  • Webservice connection data storage

    - by Mey
    Hello, I would like to ask you how can i implement the next: I have a tabBar where each tab make one different connection to one web service, and should show a different data. I would like to save this data "somewhere" and from it place load the different tabs. Where i should save this received data? Thank you, Best regards

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  • Where does the 'method' implementation go? (I'm a newbie)

    - by Spokane-Dude
    I have this code: #import "SQLiteDB.h" @implementation SQLiteDB @synthesize db, dbPath, databaseKey; @end //-------------- check for database or create it ----------------| - (void)checkForDatabase { NSFileManager *filemanager = [NSFileManager defaultManager]; NSString *databasePath = [[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0] stringByAppendingString:@"/ppcipher.s3db"]; if(![filemanager fileExistsAtPath:databasePath]) { //Database doesn't exist yet, so we create it... NSString *defaultDBPath = [[[NSBundle mainBundle] resourcePath] stringByAppendingString:@"/ppcipher.s3db"]; sqlite3 *db; if(sqlite3_open(databasePath, db) == SQLITE_OK) { } } } It's complaining that "method definition not in @implementation context". So where does it go? (I tried in the .h file, but still get the error)

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  • How do you know how much space an NSString (using default font) will occupy on a UITableView section

    - by paul_sns
    Basically I want to copy the behavior in iPhone's Calendar where the day of week (Mon, Tue, Wed) is on the left side of the table's section header (left justified) while the formatted date (Apr 1, 2010, May 1, 2010) based on locale is on the right side of the table's section header (right justified). I was thinking of inserting a variable amount of space in between the day of week and formatted date but I first need to know the actual space consumed by the text on both sides to figure out how much space to add. Hope to hear your thoughts on this. Thanks.

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  • data loading - app launching on tableview

    - by wallou
    hi, i encounter an issue with my application. On one hand when my app launches, the first view displayed is a tableview within a tableviewcontroller. On the other hand my app calls a web service to collect data. These methods are in MyAppDelegate\applicationDidFinishLaunching. The thing is that my tableview is made of custom cells that need data from the web service. I noticed that the view (with the tableview) is launched first and then MyAppDelegate\applicationDidFinishLaunchin is executed. As a result the labels of my custom cells are all equal to null as my arrays aren't filled yet by the web service. I would like to know the proper way to make it. If anyone has an idea please tell me. Wallou

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  • Is it possible to achieve string localization inside of a statically linked lib?

    - by user3696003
    I am working on building an SDK which will be built out as a statically linked library that third party applications can then drop in to their applications. Inside of this SDK, I was looking to be able to perform some "localization." Basically, I would like for the code in my SDK to be able to access some ".string" files to perform some string lookup and language translation capabilities. Then I could propagate these strings outward to implementing App layers through my exposed API's. Is this even possible? I thought it was but now that I have actually been trying, I am seriously having doubts.

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  • How can I set a connection time out manually?

    - by Daniel
    I use connect(socketfd, (struct sockaddr*)&remoteAddr, sizeof(remoteAddr)) to connect my iPhone to a computer (over WIFI) and it works fine so far. However if the computer is out of reach, my iPhone tries to establish a connection for more than a min. Is there a posibility to set the time manually out to a new value, e.g. 15 sec?

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  • Can I just release the top object (iPhone)?

    - by yar
    If I release the object that's holding a reference to the variable that I need to release, is that sufficient? Or must I release at every level of the containment hierarchy? I fear that my logic comes from working with a garbage collector for too long. For instance, I assigned to this property of a UIPickerView instance by hand instead of using IB @property(nonatomic, assign) id<UIPickerViewDelegate> delegate Since it's an assign property, I can't just release the reference after I assign it. When I finally release my UIPickerView instance, do I need to do this: [singlePicker.delegate release]; [singlePicker release]; or is the second line sufficient? Also: Are these assign properties the norm, or is that mostly for Interface Builder? I thought that retain properties were the normal thing to expect.

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  • Application frame leaves blank line at the top

    - by iFloh
    Any clues why my programmatically defined UIScrollView (using the application frame) always leaves an empty space at the top (below the navigationBar) of 20 pixels. How can I close that? UIScrollView *vScrollView = [[UIScrollView alloc] initWithFrame:[[UIScreen mainScreen] applicationFrame]]; vScrollView.backgroundColor = [UIColor redColor]; How do I need to call the application frame size to avoid that gap?

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  • Access a viewControllers View

    - by iFloh
    Hi, I am trying to get to grips with programmatically configuring views. I have a UIViewController and want to add a UIButton to its view. Well, I created the button: UIButton *newViewButton = [[UIButton alloc] initWithFrame:CGRectMake(baseX + viewPlusX, baseY + viewPlusY, viewWidth, viewHeight)]; [newViewButton setTitle:@"View" forState:UIControlStateNormal]; [newViewButton setTag:(int)key]; [newViewButton addTarget:myViewController action:@selector(viewButton:sender) forControlEvents:UIControlEventTouchUpInside]; but when trying to add it to the view [myViewController addSubview:newViewButton]; I get the error error: expected ':' before":" token any clue what I am doing wrong regards

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  • Incorrect rotation of a view controller in iOS 6

    - by XenElement
    In my app I've been using the now deprecated shouldAutoRotateToFace method. Now when using the iOS 6 simulator, all of my subviews are rotated to portrait orientation while the device is in landscape. Does anyone have any idea what could cause this? I've already tried replacing should autorotate in my main view controller with the supportedOrientations method (or whatever it is that you're now supposed to use instead).

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  • Ojective C Class or struct?

    - by Scott Pendleton
    I have a class Song with properties Title, Key, Artist, etc. There are no methods. I loop through a database of song information and create a Song object for each, populating the properties, and then store the Song objects in an NSArray. Then I thought, why not just have a struct Song with all those same properties instead of a class Song. Doing so would eliminate the class files, the #import Song line in the using class's .m file, and the need to alloc, init, release. On the other hand, I'd have to put the struct definition in every class that might need it. (Unless there's some globally accessible location -- is there?) Also, can a struct be stored in an NSArray?

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  • Difference between [object variable] and object.variable in Obj-C?

    - by John Smith
    I was working on a program today and hit this strange bug. I had a UIButton with an action assigned. The action was something like: -(void) someaction:(id) e { if ([e tag]==SOMETAG) { //dostuff } } What confuses me is that when I first wrote it, the if line was if (e.tag==SOMETAG) XCode refused to compile it, saying error: request for member 'tag' in 'e', which is of non-class type 'objc_object*' but I thought the two were equivalent. So under what circumstances are they not the same?

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  • There's @interface in my @implementation — why is that?

    - by Mark McDonald
    This is a pretty noobish question – I'm looking at some Cocoa sample code and there's @interface blocks in the .m files as well as the headers. For instance, in the AppDelegate class header, a UIWindow and UI navigation are defined as instance variables, but the @property declarations are actually made in the implementation file. Is there a functional reason for this, is it a stylistic choice, or… ?

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  • Poblem with "CFDataRef".

    - by zp26
    Hello I have a problem with "CFDataRef. I get the "data" field from a "kCFSocketDataCallBack. "data" should correspond to a string received on the socket. How do I convert, for example, in a NSString so I can put my text in a textbox?? Thank you very much static void AcceptDataCallback(CFSocketRef s, CFSocketCallBackType type, CFDataRef address, const void *data, void *info) { //my code for the textBox }

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  • Application to download video from youtube

    - by Nidal Saed
    I making an application to view videos form youtube, and I think it is very easy to write a code to make the user be able download the videos and save it in the documents folder of the application, my questions are: 1) is it legal to do this, and is there any concern of the application being rejected? 2) is it possible to make the user watch the video and when he finish (watched all the video) get this data and save it, (not to download it again since he already watched the video and downloaded it).

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