iPhone Development - Assisted GPS
What's the deal with iPhone's GPS? I never get a good reading when i'm in my office building, or in my room. What really ticks it! and what doesn't? Please help me understand the assisted GPS science. ...
3gs
Appstore app works perfectly on iPhone 3GS but crashes on iPod Touch and iPhone 3G on launch
I developed an app with Xcode 3.2.3 and iphone SDK 4.0, it works fine on both iPhone 3GS and 3G if I run it directly with xcode. However, if I download and install the app from appstore, it crashes at the launch screen for iPhone 3G and iPod Touch. (But works on 3GS with OS 3.1.3 or iOS 4.0) The device log shows the following: Except...
iphone jailbreaking for iphone 3gs which has been updated to 4.0 version
Hi, I have a question How to remove latest iphone 4.0 version from iphone 3GS(4.0 has been updated on 3GS unknowingly)? Is it can be done through jailbreaking?Please help me in this. Thanks, ...
App crashes on iPhone 4?
This code causes my app to crash on an iPhone 4 and on the simulator but works perfectly fine on a 3GS. Any ideas why this might be? -(IBAction)startButtonClicked{ GameViewController *screen = [[GameViewController alloc] initWithNibName:nil bundle:nil]; screen.modalTransitionStyle = UIModalTransitionStyleCrossDissolve; [self presen...
recorder works on iPhone 3GS but not on iPhone 3G
Hi everybody, I have a AVAudioRecorder, which gets initialized like: _recorder = [AVAudioRecorder alloc]; NSMutableDictionary *recordSettings = [[[NSMutableDictionary alloc] initWithCapacity:2] autorelease]; [recordSettings setObject:[NSNumber numberWithInt:kAudioFormatMPEG4AAC] forKey: AVFormatIDKey]; [recordSettings setObject:[NSNumb...
Why is CLLocationManager so lazy when set with a low accuracy?
I've discovered by tests that setting a low desired accuracy for CLLocationManager leads to a buggy behavior of this component. Here are the 2 tests I've made : Set the desired accuracy to kCLLocationAccuracyHundredMeters. Then the device can't find my position as accurately as I want. Here are the logs from my CLLocationManager's del...
Everytime Camera dismiss, Viewdidload got called
it happens only on the 3GS, 4 or 3G is OK. seems like viewcontroller got called everytime camera dismissed. any thoughts on that? It's Iphone, the system calls viewdidunload my view of viewcontroller when I did a [self presentModalViewController:picker1 animated:YES]; I don't want the system to dismiss my view. I did a [self.view...
iPhone performance tuning: __longcpy consume most cpu time and running very slow on 3GS but very smooth on older version
Hi guys, I'm currently working on a iPhone STG. I developed the system based on a 2D graphic engine developed by other engineers. Both are based on C++. The game run extremely slow on 3GS(about 5~10 fps). I tried 2 version of iOS: 4.1 and 3.1.2, both very slow. But when I installed the game on an iPhone (yes only "iPhone". Not 3G. Not ...