I'm having a random UIWebView
crash using iOS8.1 and UIWebView
, using an iPhone5. In my tests the crash doesn't appear on iOS7.
I've created this github repository to reproduce the crash: https://github.com/crarau/WebViewCrash
Basically I'm adding a UIWebView
and loading www.amazon.com
Randomly the app is crashing on the WebThread
with EXC_ARM_BREAKPOINT
After enabling Zombie tracking on the console there is this message:
[UIViewAnimationState release]: message sent to deallocated instance 0x14deff70
Here what happens on UIView
load:
[super viewDidLoad];
NSURLRequest * urlRequest = [NSURLRequest requestWithURL:[NSURL URLWithString:@"http://www.amazon.com"]];
self.webView.layer.cornerRadius = 0;
self.webView.userInteractionEnabled = YES;
self.webView.multipleTouchEnabled = YES;
self.webView.backgroundColor = [UIColor clearColor];
self.webView.scrollView.scrollEnabled = NO;
self.webView.scrollView.bounces = NO;
[self.webView loadRequest:urlRequest];
The exception stacktrace:
Exception Type: EXC_BREAKPOINT (SIGTRAP)
Exception Codes: 0x0000000000000001, 0x000000000000defe
Triggered by Thread: 2
Thread 0 name: Dispatch queue: com.apple.main-thread
Thread 0:
0 libsystem_kernel.dylib 0x2fe054f0 mach_msg_trap + 20
1 libsystem_kernel.dylib 0x2fe052e4 mach_msg + 36
2 CoreFoundation 0x21fed936 __CFRunLoopServiceMachPort + 142
3 CoreFoundation 0x21febedc __CFRunLoopRun + 1012
4 CoreFoundation 0x21f3a20c CFRunLoopRunSpecific + 472
5 CoreFoundation 0x21f3a01e CFRunLoopRunInMode + 102
6 GraphicsServices 0x293330a4 GSEventRunModal + 132
7 UIKit 0x255461cc UIApplicationMain + 1436
8 WebViewCrash 0x0002deec main (main.m:14)
9 libdyld.dylib 0x2fd52aac start + 0
Thread 1 name: Dispatch queue: com.apple.libdispatch-manager
Thread 1:
0 libsystem_kernel.dylib 0x2fe052a0 kevent64 + 24
1 libdispatch.dylib 0x00162674 0x154000 + 58996
2 libdispatch.dylib 0x00157496 0x154000 + 13462
Thread 2 name: WebThread
Thread 2 Crashed:
0 CoreFoundation 0x2202aea2 ___forwarding___ + 534
1 CoreFoundation 0x21f5cdf4 _CF_forwarding_prep_0 + 20
2 CoreFoundation 0x21f2ee58 CFRelease + 596
3 QuartzCore 0x24f0ba60 CA::release_objects(X::List<void const*>*) + 12
4 QuartzCore 0x24f10dc2 -[CAAnimation dealloc] + 50
5 libobjc.A.dylib 0x2f7ecd5a objc_object::sidetable_release(bool) + 162
6 libobjc.A.dylib 0x2f7ed1a4 (anonymous namespace)::AutoreleasePoolPage::pop(void*) + 400
7 CoreFoundation 0x21fee2a4 __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ + 12
8 CoreFoundation 0x21fede1e __CFRunLoopDoTimer + 646
9 CoreFoundation 0x21fec06e __CFRunLoopRun + 1414
10 CoreFoundation 0x21f3a20c CFRunLoopRunSpecific + 472
11 CoreFoundation 0x21f3a01e CFRunLoopRunInMode + 102
12 WebCore 0x2d362ebe RunWebThread(void*) + 414
13 libsystem_pthread.dylib 0x2fe95e90 _pthread_body + 136
14 libsystem_pthread.dylib 0x2fe95e02 _pthread_start + 114
15 libsystem_pthread.dylib 0x2fe93b8c thread_start + 4
Any advice is appreciated Thanks
I'm experiencing the same issue on iOS 8 and more specifically an iPad 3 fails much more often than others.
Based on your post and a couple of others that I was able to find, it seems that it's an issue with UIWebView
on iOS8 only, as it works on iOS7.
What I've done is to use the new WKWebView
on iOS8, which doesn't present the same issue, while continuing to use UIWebView
on iOS7.
The best thing to do would be to file a radar with Apple and switch to WKWebView
in the meantime.
If you are not using animations you can avoid this bug by disabling Animations. Put this in your controller init method:
[UIView setAnimationsEnabled:NO];
[super viewDidLoad];
[[MPVolumeView alloc] init]; <------ add this line, that will be ok too.
NSURLRequest * urlRequest = [NSURLRequest requestWithURL:[NSURL URLWithString:@"http://www.amazon.com"]];
self.webView.layer.cornerRadius = 0;
self.webView.userInteractionEnabled = YES;
self.webView.multipleTouchEnabled = YES;
self.webView.backgroundColor = [UIColor clearColor];
self.webView.scrollView.scrollEnabled = NO;
self.webView.scrollView.bounces = NO;
[self.webView loadRequest:urlRequest];
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