iphone

making an iphone favorites tab

how is possible to make an iphone tab that loads selected data from an array and changes based on user selection. ...

NSInvalidException:NULLcString in iPhone using SQLite

Hi, I am displaying the contacts on the table. Section I pass in the method is name of section i.e. A-Z.. and the index is the index of the row in that particular section. So to get the id based on the row I tapped in particular section,I wrote the following method. I am trying to get the id from the database whose values match with the ...

In Objective-C Determine if a Property is an int, float, double, NSString, NSDate, NSNumber, etc.

I need to determine an object's property (passed by name) type in order to perform deserialization from XML. I have some general pseudo-code (however I am unsure of how to perform these comparisons in Objective-C): id object = [[[Record alloc] init] autorelease]; NSString *element = @"date"; NSString *data = @"2010-10-16"; objc_proper...

How to get started with mobile development?

Hi, I want to get started with mobile development , I know HTML,CSS,JavaScript,PHP and C#. What is the best way to get started? I know that for example, if i want to create an iphone application i need to know objective c (and get mac),Which language is the best for mobile development (and cross platform - works on Nokia,IPhone,android,p...

Retrieve co-ordinates of points from a saved google map

My client has saved a public Google Map with several points of interest marked on it. I need to somehow lift those co-ordinates and put them in an iPhone Google Map. How would I get the longitude & latitude of each of these points? ...

iphone: error and pdf pages question

I am building a pdf viewer app. my skills are at medium LOL voodoo level now... I've got real far on my own with this app but I'm pretty stuck ether on my theory or on my code. My app has a paging scroll view that makes its self the length of the entire pdf document, then it shows the current page in another scrollview (ImageScrollView) ...

Do I need to remove subviews that aren't visible in UIScrollView to keep it running smoothly?

I'm working on making a special UIScrollView to show a timeline of events, (Like a gantt chart if you're familiar with such things) and there could potentially be dozens of these events, some visible and some not at different times. What I'm wondering is this: should I make an implementation similar to UITableView to remove the items th...

Does UIGestureRecognizer Work with UIWebView

I am trying to get a UITapGesture Recognizer to work with a UIWebView. I want to be able to detect when a button is pushed on my web view. If i set the userInteractionEnabled property of the webview to NO it works, it also works if numberOfTouchesRequired is set to 2. How do i detect touches and the position of the touch in a UIWebView?...

How would you debug this iphone bug

-[CFString respondsToSelector:]: message sent to deallocated instance 0x4b9e720 I don't where to start, tried static analyzer and stepped through each line of code but still no help. ...

Is there a simple way to create a modal button menu on the iPhone?

Plenty of applications seem to do this. For example, go to Apple's mail application and press the "reply" button on the toolbar. You'll get a menu with buttons that say "Reply", "Reply All", "Forward" and "Cancel" that will scroll up from the bottom. The way I figure I could do this is to create a short view in IB with the buttons I wa...

Intercept obj-c delegate messages within a subclass

I have a subclass of UIScrollView that I need to internally respond to scrolling behaviour. However the viewcontroller will still need to listen to scrolling delegate callbacks so I can't outright steal the delegate within my component. Is there a way to keep the property named "delegate" and just listen to messages sent along it, or els...

UIButton only background slightly transparent

Is it possible to make just the background semi transparent? If I change the alpha it changes the title and the boarder. I can change the titleLabel.alpha property but it won't go above the buttons Alpha, only below it. I know I can make a custom one but thought there would be an easier way ...

UITableView adding/deleting sections while not in editing mode?

I have a UITableView and basically I'm making some in app settings, and if the first section's UISegmentedControl is toggled to index 1, then I want to display a new section, but if index 1 was previously set and the user selects index 0 then I need to remove section 2. To do this I had this code set to fire on the UISegmentedControl's ...

iPhone - Bike physics game

I want to make a game where you ride a bicycle down a hill - using accelerometer for rider tilt and a pedal/brake button (vaguely like Moto X Meyhem). Does any one have any ideas where i can find tutorials/documentation of the things that i would have to do. (don't know where to start) I guess what i need is: To simulate physics of the...

Black Translucent Nav Bar / UITableView / Content Inset / Scroll Position Issues

Hello, I'm implementing a UITableView that has the index along the right hand size as well as section headers. I'm essentially implementing a stock NSFetchedResultsController as depicted in Apple's docs. The UITableView is contained within a UINavigationController with a Black Translucent Nav Bar. I have the top content and scroller ins...

MFMessageComposeViewController alloc returns nil

In my application, MFMailComposeViewController works fine but creating a new instance of MFMessageComposeViewController fails. Here is the code for both: -( IBAction)sendSMS: (id)sender { MFMessageComposeViewController *picker = [[[MFMessageComposeViewController alloc] init] autorelease]; picker.messageComposeDelegate = self; NSAr...

stop sms messaging to iPhone programatically

Hi iPhone/iPad Developers, I want to confirm a feature , a client asks to me develop an app with a feature that it is able to stop sms messages to the phone for a certain period of time. I have done some research and found a link pasted below ( and the screen shot of the page ) in which the author of a renown iPhone App development book...

fbconnect facebook iphone sdk

Hi all I would like to make a button in order the user to be able to connect and join a group i have created in facebook...is this possible with fbconnect could you please give a tutorial or something? ...

How can I change a ViewController list (by changing predicate) without popping and pushing?

I have a ViewController whose view results from data from a fetch request with Predicate 1. I'd like to repeat the fetch request with a more restrictive Predicate 2 that will give a SUBSET of the data using Predicate 1. Then I'd like to update (and possibly animate) that view on the iPhone screen by pressing a toggle button, so that ...

scheduling async downloads in main thread's runloop vs bg thread's runloop on iOS?

Here's a slide from WWDC 2010 session 208: conn = [[NSURLConnection alloc] initWithRequest:req delegate:self startImmediately:NO]; [conn scheduleInRunLoop: [NSRunLoop currentRunLoop] forMode: NSDefaultRunLoopMode]; [conn start]; Are there any problems associated with putting multiple conn's in the currentRunLoop? What benefits do...