exc-bad-access

问题 I use CoreAnimation to animate UIImageView (curve Bezier animation). Here`s my code: CAKeyframeAnimation *pathAnimation = [CAKeyframeAnimation animationWithKeyPath:@"position"]; pathAnimation.calculationMode = kCAAnimationCubic; pathAnimation.fillMode = kCAFillModeForwards; pathAnimation.removedOnCompletion = NO; CGPoint endPoint = originalPosition; UIBezierPath *path = [UIBezierPath bezierPath]; [path moveToPoint:star.layer.position]; [path addQuadCurveToPoint:endPoint controlPoint

问题 I have a UITextView which I have created programmatically in the following code: NSLog(@"creating the first blurb"); blurb = [[UITextView alloc]initWithFrame:CGRectMake(0, 0, 320, 50)]; [blurb setText:total]; blurb.backgroundColor = [UIColor redColor]; where blurb is defined as a UITextView in the @interface . Here's where I'm having the problem: total is an NSString that is defined to get the text from a .txt file from a specified domain. It is mutated as: NSString *url = @"https://sites

问题 My iPhone application blows up when it accesses an instance variable from within one of the UITableView delegate methods. I think I'm retaining it so I do not understand why I can't access it without a problem. Here's my .h file #import <Foundation/Foundation.h> #import "AlertSummaryCell.h" #import "AlertDetailViewController.h" @interface AlertSummaryTableViewController : UITableViewController { NSDictionary *alerts; NSString *alertKind; } @property (nonatomic, retain) NSDictionary *alerts;

问题 I have been building an app for a client and everything was going smoothly until I started getting this error. This is a unique situation, I've learned how to use instruments and NSZombie however I can't run instruments with NSZombieEnabled on the iPhone only on the simulator. I have to debug this problem in the iPhone because I'm using UIImagePicker to take a picture and the error happens shortly after I take the picture. I'm also using ARC so I can't set release or retain info at all, ARC

问题 I have a PlaceAnnotation class that I fill into an NSMutableArray. In viewDidLoad, i initiate ihatethis _ihatethis = [[NSMutableArray alloc]init]; I use a MKLocalSearchCompletionHandler to search. And handle the mapitems like this: for (MKMapItem *mapItem in [response mapItems]){ PlaceAnnotation *place = [[PlaceAnnotation alloc] init]; [place assignTitle:[[mapItem placemark] name]; [_ihatethis addObject:place]; } [_ihatethis removeObjectAtIndex:2]; /*BAD ACCESS HERE*/ [_tableView reloadData];

问题 I got a strange error. Thread 1: EXC_BAD_ACCESS (code=1, address=0x20) When a View subView on another view. Both v iew object not nil. How do I solve this issue. Edit: I am implementing a video chat code with VOIP. When an incoming call comes and after accept the call. I need to display a screen. This screen is showing fine and other UIElements button etc.. (including button functionalities) everything is working as expected for audio calls. But, in video call after receive the remote user

问题 I am doing a homework assignment and I am running into these issues. I am getting EXC_BAD_ACCESS when I call allocate(); void* Pool::allocate() { if( free == NULL) { this->expandPool(); } void* tmp = free; void* mem = malloc(elemSize); memcpy(&free,free,sizeof(char*)); //exec bad access right here memcpy(tmp,mem,sizeof(elemSize)); return tmp; } Here is my expandPool method: void Pool::expandPool() { poolSize++; // Is this the first time? if(poolSize <= 1) pool = new char*[poolSize]; else {

问题 I have a problem with getting MySQL working with my code. I get the EXC_BAD_ACCESS(code=EXC_i386_GPFLT) error on the connect line. The code is the following: try { driver =sql::mysql::get_driver_instance(); connection = driver->connect("tcp://127.0.0.1:3306/", "root", ""); I've seen the post MySQL Connector/C++ OS X 10.9 Mavericks and XCODE 5.0.2 but I can't do the same thing because I use a bunch of libraries that were linked the same way, and they are more difficult to configure in Xcode

问题 I am getting a crash on my app. It's occurring on dismissModalViewControllerAnimated: message, but... if I set a breakpoint on the NSLog, and step over, it goes through with problem, the EXC_BAD_ACCESS code is 2 and address 0x4: Thread 1: EXC_BAD_ACCESS(code=2, address=0x4) I've never had something work with breakpoints and EXC_BAD_ACCESS without them, any ideas? Please note that my appController is fine. (not released anywhere). if (appController.modalViewController) { NSLog(@"==== RETAIN

问题 This is a Q&A to hopefully help anyone else who runs into this issue. The problem occurred seemingly at random while I was working on transferring the FirstResponder chain between controls. The controls were custom control objects inherited from UIView with either a UITextField or UITextView added as a subview (with other controls) and generated entirely in code. Not every instance of the controls that were generated threw the exception, but the ones that did did so consistently whether the