I'm doing an app in Titanium for Android and IOS. When I navigate a lot in the application I have a random exception and the app crashes.
How can I know where is the problem?
The app is a little complex to explain:
It has two windows, first window is for "home" view that is only in portrait mode, and when I click to go to another view, I close the first window, I open another window and I add a view with the content to this window. The content view load the same web view with different url.
The app loads ok and I can navigate for the different views and windows ok. But when I navigate a lot, finally I have a EXC_BAC_ACCESS (SIGSEGV) and KERN_INVALID_ADDRESS
This only happens on device (on simulator it works ok) with iPad os 5.1.1 and os 7.0.2.
This is the log where the thread crashes:
Incident Identifier: 1A3E94A0-E6FC-4BFF-BB3B-7651D66664DE
CrashReporter Key: d4422d11c83ca9acf2212996b20dd1078f00f36c
Hardware Model: iPad3,3
Process: Appname [16747]
Path: /var/mobile/Applications/1BACB160-AED8-4F5F-A599-4F7F1F4A4DC4/Appname.app/Appname
Identifier: Appname
Version: ??? (???)
Code Type: ARM (Native)
Parent Process: launchd [1]
Date/Time: 2013-10-31 11:56:58.680 +0100
OS Version: iPhone OS 5.1.1 (9B206)
Report Version: 104
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x00000000
Crashed Thread: 0
Thread 0 name: Dispatch queue: com.apple.main-thread
Thread 0 Crashed:
0 libicucore.A.dylib 0x37953fb2 utext_setNativeIndex + 122
1 libicucore.A.dylib 0x379542a6 icu::RuleBasedBreakIterator::following(int) + 246
2 WebKit 0x35f20b2c -[NSString(WebStringDrawing) __web_drawInRect:withFont:ellipsis:alignment:letterSpacing:lineSpacing:includeEmoji:truncationRect:measureOnly:renderedStringOut:drawUnderline:] + 2176
3 WebKit 0x35e99078 -[NSString(WebStringDrawing) __web_drawInRect:withFont:ellipsis:alignment:letterSpacing:lineSpacing:includeEmoji:truncationRect:measureOnly:renderedStringOut:] + 108
4 WebKit 0x35e98ffc -[NSString(WebStringDrawing) __web_drawInRect:withFont:ellipsis:alignment:letterSpacing:lineSpacing:includeEmoji:truncationRect:measureOnly:] + 100
5 WebKit 0x35e98f88 -[NSString(WebStringDrawing) _web_drawInRect:withFont:ellipsis:alignment:lineSpacing:includeEmoji:truncationRect:measureOnly:] + 100
6 WebKit 0x35e98f14 -[NSString(WebStringDrawing) _web_sizeInRect:withFont:ellipsis:lineSpacing:] + 80
7 UIKit 0x34fba65c -[NSString(UIStringDrawing) sizeWithFont:constrainedToSize:lineBreakMode:lineSpacing:] + 108
8 UIKit 0x3512ee0e -[NSString(UIStringDrawing) sizeWithFont:constrainedToSize:lineBreakMode:] + 46
9 Appname 0x0014528c -[TiUILabel sizeForFont:] (TiUILabel.m:57)
10 Appname 0x0014537a -[TiUILabel contentWidthForWidth:] (TiUILabel.m:69)
11 Appname 0x001449bc -[TiUILabelProxy contentWidthForWidth:] (TiUILabelProxy.m:17)
12 Appname 0x00116fb4 -[TiViewProxy autoWidthForSize:] (TiViewProxy.m:756)
13 Appname 0x00120dbc -[TiViewProxy computeChildSandbox:withBounds:] (TiViewProxy.m:2543)
14 Appname 0x0011fbb8 -[TiViewProxy measureChildren:] (TiViewProxy.m:2352)
15 Appname 0x00121e36 -[TiViewProxy layoutChildren:] (TiViewProxy.m:2818)
16 Appname 0x0011dd9a -[TiViewProxy refreshView:] (TiViewProxy.m:2061)
17 Appname 0x0011f25c -[TiViewProxy layoutChildrenIfNeeded] (TiViewProxy.m:2264)
18 Appname 0x001d5ba0 +[TiLayoutQueue layoutProxy:] (TiLayoutQueue.m:79)
19 Appname 0x001d59b0 performLayoutRefresh (TiLayoutQueue.m:46)
20 CoreFoundation 0x32a5fa2c __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ + 8
21 CoreFoundation 0x32a5f692 __CFRunLoopDoTimer + 358
22 CoreFoundation 0x32a5e268 __CFRunLoopRun + 1200
23 CoreFoundation 0x329e149e CFRunLoopRunSpecific + 294
24 CoreFoundation 0x329e1366 CFRunLoopRunInMode + 98
25 GraphicsServices 0x32b2e432 GSEventRunModal + 130
26 UIKit 0x34fc0cce UIApplicationMain + 1074
27 Appname 0x000b8c34 main (main.m:36)
28 Appname 0x000b8470 ___lldb_unnamed_function1$$Appname + 32
Thread 0 crashed with ARM Thread State:
r0: 0x00000000 r1: 0x00000000 r2: 0x00000000 r3: 0x00000000
r4: 0x0d65c6b0 r5: 0x0d65c690 r6: 0x00000000 r7: 0x2feabfac
r8: 0x00000003 r9: 0x2feabf6c r10: 0x00000003 r11: 0x08052950
ip: 0x00000000 sp: 0x2feabfa4 lr: 0x00000000 pc: 0x37953fb2
cpsr: 0x80000030
I've also had the log of other threads and information about Binary Images. If it's useful I can paste it.
How can I know what is the cause of the problem and where is the problem?
Thank you very much
Finally, I think it was a problem with webview component. I created a web view in each view (I need it to show some graphs) and when I return to home view, I tried to remove it. I think the problem is that you can't remove it completely and it takes a lot of memory.
Finally I solved it creating a webview in app.js and using it in all views changing the url and dimensions.