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  • uitableview delegate methods are not called

    - by Sean
    hi all i got the problem that the tableview methods are not called the first time the tableview is shown. if switch back to the previous view and then click the button to show the tableview again, the methods are called this time. i've to say that i show an actionsheet while the tableview is loading. the actionsheet i call in the ViewWillAppear method. thanks in advance sean

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  • How to I pass @selector as a parameter?

    - by erotsppa
    For the method [NSThread detachNewThreadSelector:@selector(method:) toTarget:self withObject:(id)SELECTOR]; How do I pass in a @selector? I tried casting it to (id) to make it compile but it crashes in runtime. More specifically, I have a method like this +(void)method1:(SEL)selector{ [NSThread detachNewThreadSelector:@selector(method2:) toTarget:self withObject:selector]; } it crashes, how do I pass in the selector without crashing? So that the new thread can call the selector when the thread is ready?

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  • AudioQueue recording as float

    - by niklassaers
    Hi guys, I would like to have the result from my recording as a float in the range [0.0, 1.0], alternatively [-1.0, 1.0] because of a bit of math I want to do on it. When I set my recordingformat to be in float, like this: mRecordFormat.mFormatFlags = kLinearPCMFormatFlagIsFloat; I get: Error: AudioQueueNewInput failed ('fmt?') Does this mean the hardware doesn't support recording to floats? If not, how do I set it to record in floats? If so, are there any processor-friendly ways I can convert a signed integer array to a float array? Cheers Nik

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  • Is that possible using "setAutoresizingMask" to make the view autoresizing after hiding/showing navi

    - by Mickey Shine
    I am doing this with the following: [[self navigationController] setNavigationBarHidden:YES animated:YES]; and also I didn't use IB to create view objects. But my view did not auto-resize after hiding navigation bar(there was a blank area where the navigation bar used to be) I am wondering if I could make it auto-resize only by "setAutoresizingMask", or do I have to use some hand-writing animation stuff?

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  • CATiledLayer blanking tiles before drawing contents

    - by Greg Plesur
    All, I'm having trouble getting behavior that I want from CATiledLayer. Is there a way that I can trigger the tiles to redraw without having the side-effect that their areas are cleared to white first? I've already subclassed CATiledLayer to set fadeDuration to return 0. To be more specific, here are the details of what I'm seeing and what I'm trying to achieve: I have a UIScrollView with a big content size...~12000x800. Its content view is a UIView backed by a CATiledLayer. The UIView is rendered with a lot of custom-drawn lines Everything works fine, but the contents of the UIView sometimes change. When that happens, I'd like to redraw the tiles as seamlessly as possible. When I use setNeedsDisplay on the view, the tiles redraw but they are first cleared to white and there's a fraction-of-a-second delay before the new content is drawn. I've already subclassed CATiledLayer so that fadeDuration is set to 0. The behavior that I want seems like it should be possible...when you zoom in on the scrollview and the content gets redrawn at a higher resolution, there's no blanking before the redraw; the new content is drawn right on top of the old one. That's what I'm looking for. Thanks; I appreciate your ideas. Update: Just to follow up - I realized that the tiles weren't being cleared to white before the redraw, they're being taken out entirely; the white that I was seeing is the color of the view that's beneath my CATiledLayer-backed view. As a quick hack/fix, I put a UIImageView beneath the UIScrollView, and before triggering a redraw of the CATiledLayer-backed view I render its visible section into the UIImageView and let it show. This smooths out the redraw significantly. If anyone has a better solution, like keeping the redraw-targeted tiles from going away before being redrawn in the first place, I'd still love to hear it.

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  • how to remove seperator from tableview

    - by thndrkiss
    Hi, I used interface builder and changed my tableview style as grouped and seperator as none. I was able to see the change in the display style which is grouped right now. But The seperator change is not getting reflected. Kindly help me how to remove the seperator.

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  • UITableViewCellStyleValue2 edit indicators?

    - by Jason Jardim
    I am using this style of table view UITableViewCellStyleValue2. I set editing, but I cant seem to get the arrows to show up on the right of the cell - like the Contacts app. Also in the contacts app I notice that if I have a Favorite it puts a * (star) to the right. Any info on how to get an image would be appreciated. Thanks!

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  • Is it possible to hide the tabbar when a button is pressed to allow a full screen view of the conten

    - by Jonah
    I have a UITabBar in the detail view of my navigation based application. I am storing text and images in a tableview and would like the user to be able to tap on a cell to hide the navigation controller and the tabbar for full screen viewing of the content. I found this code for hiding the top bars, but it does not seem as easy to hide the tabbar. [[UIApplication sharedApplication] setStatusBarHidden:YES animated:YES]; [self.navigationController setNavigationBarHidden:YES animated:YES]; Does anyone know how to do this? This code does not work to hide the tabBar once the view is already loaded. yourTabViewController.hidesBottomBarWhenPushed = YES;

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  • how to add a instance variable and use it in a custom UIButton

    - by thndrkiss
    Hi, I created a custom UIButton like this @interface CustomButton : UIButton { NSString *firstLine; NSString *secondLine; } @property (nonatomic, retain) NSString *firstLine; @property (nonatomic, retain) NSString *secondLine; @end CustomButton* rightButton = [CustomButton buttonWithType:UIButtonTypeDetailDisclosure]; rightButton.secondLine:@"hello"; error message is * Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '* -[UIButton setSecondLine:]: unrecognized selector sent to instance 0x43280e0' What has to be done to fix this up ? how should the instance variable added ?

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  • sqlite3 update text in uitextview

    - by summer
    i had the sqlite statement ready for update..but i am confuse about grabbing text from uitextview and updating it..and i waned to update it using a uibutton..how do i carry on after creating the sql statement???kinda lost..any new solution is appreciate.. - (void) saveAllData { if(isDirty) { if(updateStmt == nil) { const char *sql = "update Snap Set snapTitle = ?, snapDesc = ?, Where snapID = ?"; if(sqlite3_prepare_v2(database, sql, -1, &updateStmt, NULL) != SQLITE_OK) NSAssert1(0, @"Error while creating update statement. '%s'", sqlite3_errmsg(database)); } sqlite3_bind_text(updateStmt, 1, [snapTitle UTF8String], -1, SQLITE_TRANSIENT); sqlite3_bind_text(updateStmt, 2, [snapDescription UTF8String], -2, SQLITE_TRANSIENT); sqlite3_bind_int(updateStmt, 3, snapID); if(SQLITE_DONE != sqlite3_step(updateStmt)) NSAssert1(0, @"Error while updating. '%s'", sqlite3_errmsg(database)); sqlite3_reset(updateStmt); isDirty = NO; } //Reclaim all memory here. [snapTitle release]; snapTitle = nil; [snapDescription release]; snapDescription = nil; //isDetailViewHydrated = NO; }

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  • AVAudioPlayer making noise when playing multiple sounds at the same time

    - by Rob
    I am having an issue where AVAudioPlayer is introducing noise into playback ONLY when I play multiple sound files at the same time. If I play them each individually, they all sound perfect. But, if I play sound clip B while sound clip A is still playing, the speakers start crackling like there is noise. I have tried both m4a files AND caf files and both make the same noise, so it has to be something with how I am implementing this method or a quirk with AVAudioPlayer. Any insights? code I am using: UITouch* touch = [[event allTouches] anyObject]; NSString* filename = [soundArray objectAtIndex:[touch view].tag]; NSString *path = [[NSBundle mainBundle] pathForResource:filename ofType:@"m4a"]; AVAudioPlayer * newAudio=[[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:path] error:NULL]; self.theAudio = newAudio; // automatically retain audio and dealloc old file if new m4a file is loaded [newAudio release]; // release the audio safely theAudio.delegate = self; [theAudio prepareToPlay]; [theAudio setNumberOfLoops:0]; [theAudio setVolume: volumeLevel]; [theAudio play];

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  • Stop UITextView from jumping when programatically setting text

    - by Michael Waterfall
    Hi there, I have to update a small amount of text in a scrolling UITextView. I'll only be inserting a character where the cursor currently is, and I'll be doing this on a press of a button on my navigation bar. My problem is that whenever I call the setText method of the text view, it jumps to the bottom of the text. I've tried using contentOffset and resetting the selectedRange but it doesn't work! Here's my example: // Remember offset and selection CGPoint contentOffset = [entryTextView contentOffset]; NSRange selectedRange = [entryTextView selectedRange]; // Update text entryTextView.text = entryTextView.text; // Try and reset offset and selection [entryTextView setContentOffset:contentOffset animated:NO]; [entryTextView setSelectedRange: selectedRange]; Is there any way you can update the text without any scroll movement at all... as if they'd just typed something on the keyboard? Many thanks, Michael Edit: I've tried using the textViewDidChange: delegate method but it's still not scrolling up to the original location. - (void)textViewDidChange:(UITextView *)textView { if (self.programChanged) { [textView setSelectedRange:self.selectedRange]; [textView setContentOffset:self.contentOffset animated:NO]; self.programChanged = NO; } } - (void)changeButtonPressed:(id)sender { // Remember position self.programChanged = YES; self.contentOffset = [entryTextView contentOffset]; self.selectedRange = [entryTextView selectedRange]; // Update text entryTextView.text = entryTextView.text; }

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  • First Tap on customcell of uitableview should expand it and second should contract it.

    - by neha
    Hi all, In my application I have this requirement that first tap on custom cell of uitableview with a label in it should expand it and second should contract it. I'm able to expand and contract cell and expand label inside cell, but not able to contract the label on second tap. I'm using this function - (void)setSelected:(BOOL)selected animated:(BOOL)animated { [super setSelected:selected animated:animated]; if( selected == YES ) { [self expandRow]; } else { [self contractRow]; } height = [lblFeed frame].size.height + 75; } expandRow expands the label and contractRow contracts it. I'm perplexed as for how many rows this function gets called. It doesn't get called only for the cell tapped, it gets called more number of times for single tap on single cell may be for other cells but I'm not getting which rows. This' really urgent. Can anybody please help?

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  • Remove In-App Purchase from free app and increase the price

    - by Arseniy Banayev
    The current version of an application in the App Store is free and has very limited functionality. An In-App Purchase unlocks everything else. I have decided to remove the In-App Purchase and just make the application cost the same price as the In-App Purchase did. But if I make the update now, then those users who have the free version but who have not yet paid for the In-App Purchase will get a free update into the full version. I have removed all traces of my singleton class, PurchaseManager, from the application, so that at this point, when I build/run it, all of the features are unlocked. At this point, how can I make sure that the free-version users don't just ride an update into the full version? Maybe there's a way to test whether the app is obtained through an update or through a purchase? That way, if it's through an update, I will see if it's the free version w/o the IAP and then force the user to purchase the IAP to continue playing. Any ideas?

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  • Why are my "tel:" links not working

    - by Griffo
    I have a tableView which has cells with phone numbers. The app is not dialing the numbers though. See the code below - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { if (indexPath.section == 2) { UITableViewCell *selectedCell = [tableView cellForRowAtIndexPath:indexPath]; NSString *numberToDial = [NSString stringWithFormat:@"tel:%@", selectedCell.detailTextLabel.text]; NSLog(@"%@",numberToDial); [[UIApplication sharedApplication] openURL:[NSURL URLWithString:numberToDial]]; } } Console ouput: 2010-03-08 01:32:30.830 AIB[1217:207] tel:01 8350098 As you can see, the number goes to the console, but doesn't get dialled. The weird thing is, if I change the last statement to this: [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"tel:171"]]; the phone dials the number 171 without any issue

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  • How do I reduce the height of a TableView when it is constructed in IB?

    - by erotsppa
    I wanted to add a view to the bottom of my screen. The controller is a UITableViewController, how do I shrink the tableView and add a extra view at the bottom of the tableview? I've tried setting the frame of self.tableView in different places (viewDidLoad, viewWillAppear etc) but nothing happens. The tableView is created by IB and not programtically. I've tried added a footer to my table view but that's not what I want, because the footer actually scrolls up, I want a static non moving View at the bottom of the screen.

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  • Problem with testing In App with sandbox test account

    - by Nava Carmon
    Hi, I created a test user account through the Manage User Accounts in iTunes Connect. When you create such an account you have to select a valid storefront for your account. I chose US Store. Now I signed out from the store in App Store settings on my device. Ran the application and tried to perform a purchase. I successfully login with my test account. After I press Confirm when entering my credentials I get an alert, that comes from SKPaymentTransactionStateFailed from the observer. It says "Your account is only valid for purchases in the US iTunes Store". The error state = 0 unknown. Second time when i try to perform the purchase, StoreKit only asks me for a password like the previous login was successful. After entering a password I can perform a purchase. My question is whether it's only because it's a testing account and the application is not actually on AppStore? What should I do to avoid this message or at least to continue the purchasing process? Thanks a lot, Nava

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  • Can a ViewController (AdMob AdViewController) control a view that is a subview of the controlled vie

    - by RexOnRoids
    I am trying to use the IB AdMob ad in my app. I followed the instructions provided but I am getting an EXC_BAD_ACCESS from the AdMob class. I am trying to figure out what the problem is. Anyway, my question is Can a ViewController (AdMob AdViewController) control a view that is a subview of the controlled view of another UIViewController? Here is how I set it up: I start off with a UIViewController in IB. Step 1) I add a UIView sized 320 x 48 to the UIView controlled by the UIViewController. Step 2) I add an Object to the hierarchy (not under any other object). Step 3) I set the class of the Object to AdViewController (AdViewController.h of AdMob SDK) Step 4) I set connect the view outlet of the Object to the UIView of Step 1

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