iphone

When and where are controller's properties supposed to be set ?

Hey guys, This time, I was wondering when I was supposed to set my properties ... I got a nav bar which I use to push a new controller (controlling a Web View) : NewsViewController *webViewController = [[NewsViewController alloc] init]; // I create my controller webViewController.urlText = @"http://www.google.fr"; // I set the prope...

If-Statement for String/Int

Hi, my if clause always runs into the else statement? Whats the fault? NSLog([[category objectForKey:@"id"] stringValue]); // Traces 15 if ([[category objectForKey:@"id"] stringValue] == "15") { result.isExternal = YES; } else { result.isExternal = NO; } thanks for helping ...

iPhone dynamic UIButton in UITableView

I'm creating a button for each cell row in a tableview. The button acts as switch to add the selected row as 'favorite' in NSUserDefaults. My problem is that whenever I press this button, a new one get drawn on top of the old one. How do I release/reuse it right? This is what my cellForRowAtIndexPath method looks like: - (UITableViewCel...

Decimal points in sqlite table?

I'm trying to get a float to show up with the decimal point in my sqlite table. I've included the code below for how it shoes up in the game which is all fine. As well as for what happens at the end of a level. And how it gets updated to the sqlite table. It shoes up fine as a decimal during the game, but it gets recorded to the tabl...

Xcode acts weird on Build and Debug

Hi, I'm currently developing an iPhone app and so far things have worked out smoothly. However, tonight I've been getting some weird behavior from Xcode when choosing 'Build and Debug', especially when using the simulator. In simulator it seems I'm getting two builds of my app installed, there's two identical icons on the homescreen of t...

Call obj-c class function from another class

Im new to Obj-C, and I have a class, with a variable of a class in it, and I have a function not in a class that I need to call a function of the variable of the first one from, when the first class calls the function. Thats written all wrong, but I dont know the right words so: Root.h: @interface Root { UITableView *tableview; } ...

Best database for mobile phone development

I am writing an application that initially will be developed as web (probably Silverlight) and Android application. I found on Android website that SQLite is supported, but I plan to release the same app for Windows Mobile, Palm Web OS and iPhone as well. Could you please advice me on which database would be the best to work with for al...

Using Google's Go Language to Write a Library for an iPhone App

I'm considering using Go as a low-level, performant language alternative to C/Objective-C to implement a library for an iPhone App. Could either of the Go compilers generate a library that could be linked into a native iPhone app with the Go runtime, etc.? Is there an ARM port for Go or does gccgo/gcc support this? I imagine that since g...

MP3 playback and stop issue?

This code works fine until I exit the view and try to come back into it. If I do this, the stop button no longer works. How do I get it to still work after leaving the view? -(IBAction)musiconButtonClicked:(id)sender{ NSString *path = [[NSBundle mainBundle] pathForResource:@"NextRevIt" ofType:@"mp3"]; self.audioPlayer = [[AVA...

iPhone Memory Management with Properties of Singletons

I seem to have a fundamental gap in my memory management understanding. The code below is located within a singleton that gets called multiple times within my app to parse data that is downloaded from the web. For each article I download, I allocate a mutable string, then do tons of parsing, then write the file to the file system for la...

What's the best approach to asynchronous image caching on the iPhone?

I'm creating an iPhone app that will pull data down from a Web API, including email addresses. I'd like to display an image associated with each email address in table cells, so I'm searching the Address Book for images and falling back on a default if the email address isn't in the book. This works great, but I have a few concerns: Pe...

Error Undefined symbols: "_compress" with Image Upload Class

Hi, im want use this Class http://stackoverflow.com/questions/125306/how-can-i-upload-a-photo-to-a-server-with-the-iphone to Upload an image from my iPhone App to my Webserver. Ive Copyd the header and main file and added "#import "EPUploader.m"" to my ViewControler where i call the EPUploader Method. Error Message is: Ld build/Relea...

iPod touch debugging: Error on install/run only if app exists on device already?

Hi all, I am using an iPod to test an app. The device is all set up with the right provisioning profiles, etc-- that's not really the issue. But every time I start the app from Xcode on the device, I get the "A signed resource has been added, modified, or deleted." error from the Organizer window. Wait, I know, you think it's a provis...

How to disable the highlight control state of a UIButton?

I've got a UIButton that, when selected, shouldn't change state when being touched. The default behaviour is for it to be in UIControlStateHighlighted while being touched, and this is making me angry. Suggestions? ...

Debugger not working in C++

I've written an iPhone program which includes a library. The library uses some C++. The program runs fine in the simulator as long as debugger is turned off. GDB immediately complains with the following /SourceCache/gdb/gdb-962/src/gdb/dwarf2read.c:7593: internal-error: could not find partial DIE in cache A problem internal to GDB ha...

iPhone - NavigationBar Custom Background

I am looking for a way to have a custom navigation bar and need to have a custom navigation bar background to achieve this. I was looking around for how to do this, but could not find a solution. If anyone has the solution, help is much appreciated. ...

How can I call the ViewDidAppear only one time?

When the user start the app I want it show the stockholm.xib and It does here: -(void)viewDidAppear:(BOOL)animated{ [super viewDidAppear:animated]; NSUserDefaults *startPage =[NSUserDefaults standardUserDefaults]; NSString *page =[startPage stringForKey:@"page"]; NSLog(page); if(page==nil) { //Do nothin...

Where can I get fancy red and green UIButtons kind of like "End Call", etc?

Is there any resource for an iPhone developer who wants bright red and green buttons in their app? I mean, as in pre-cut buttons? The closest I've found are the Photoshop templates and those are a bit difficult to cut out just right. Thanks. ...

How do I Increase the speed of this sqlite db query / object creation in Objective-C?

Hi, I have the following method which queries a sqlite db table on the iPhone it pulls about 6,000 rows from the table and then cycles through those creating 6,000 objects based on the information and stuffing them into an array. The while loop is somewhat slow (takes ~ 10 seconds to iterate through them on my device) Any thoughts on ho...

Enum or typedef with types

I'd like to create a simple object that I can access like this: myobject.floatValue1 = 1.0; myobject.floatValue2 = 2.0; It shouldn't have anymore than the two properties. Is it possible to create an enum or typedef with such a simple structure. Or must I create a class? ...