I am trying to use a simple one UITextViewin a basic view, but this leads to an accidental application crash. Sometimes it crashes when I type something in it, sometimes when I scroll, sometimes after I press the return key. From the stack trace, it looks like it is called by a graphic or animation code to visualize user interface elements for spelling, grammar checking, etc.
Why is this crashing my application? Do I need to import additional libraries or do I need to specify some kind of delegate for UITextView? I literally just have a simple UITextView in barebones mode, nothing out of the ordinary.
Here's the stack trace:
Program received signal: "EXC_BAD_ACCESS".
(gdb) bt
#0 0x9535f9b1 in ?? ()
#1 0x9534c33f in ?? ()
#2 0x9534c13e in ?? ()
#3 0x9634df5c in ?? ()
#4 0x9418d244 in CGDataProviderRetain ()
#5 0x963b7036 in ?? ()
#6 0x98263486 in CGImageReadCreateWithProvider ()
#7 0x982633a2 in CGImageSourceCreateWithDataProvider ()
#8 0x020c0947 in CGImageCreateWithPNGDataProvider ()
#9 0x02ebfeed in WKGraphicsCreateImageFromBundleWithName ()
#10 0x02ebfc3b in WebCore::GraphicsContext::drawLineForMisspellingOrBadGrammar ()
#11 0x02ebf9cb in WebCore::InlineTextBox::paintSpellingOrGrammarMarker ()
#12 0x02e73932 in WebCore::InlineTextBox::paintDocumentMarkers ()
#13 0x02e730a1 in WebCore::InlineTextBox::paint ()
#14 0x02e717ef in WebCore::InlineFlowBox::paint ()
#15 0x02e71565 in WebCore::RootInlineBox::paint ()
#16 0x02e71220 in WebCore::RenderLineBoxList::paint ()
#17 0x0354c451 in WebCore::RenderBlock::paintContents ()
#18 0x02e6d7bd in WebCore::RenderBlock::paintObject ()
#19 0x02e6ed51 in WebCore::RenderBlock::paint ()
#20 0x02e6dcf2 in WebCore::RenderBlock::paintChildren ()
#21 0x02e6d7bd in WebCore::RenderBlock::paintObject ()
#22 0x02e6ed51 in WebCore::RenderBlock::paint ()
#23 0x02e6c502 in WebCore::RenderLayer::paintLayer ()
#24 0x02e6bce3 in WebCore::RenderLayer::paintLayer ()
#25 0x02e6b635 in WebCore::RenderLayer::paint ()
#26 0x02e6b3de in WebCore::FrameView::paintContents ()
#27 0x03bd71da in -[WebFrame(WebInternal) _drawRect:contentsOnly:] ()
#28 0x03bd7104 in -[WebHTMLView drawSingleRect:] ()
#29 0x02e6af68 in _WKViewDraw ()
#30 0x02e6b03f in _WKViewDraw ()
#31 0x02e6b03f in _WKViewDraw ()
#32 0x02e6b03f in _WKViewDraw ()
#33 0x02e6b03f in _WKViewDraw ()
#34 0x02e6adb0 in WKViewDisplayRect ()
#35 0x02e6ad41 in WKWindowDrawRect ()
#36 0x02e6a9d3 in WebCore::TileCache::drawLayer ()
#37 0x04041d63 in backing_callback ()
#38 0x0404161e in CABackingStoreUpdate ()
#39 0x040407f4 in -[CALayer _display] ()
#40 0x02e6a3d4 in -[TileLayer display] ()
#41 0x040402b1 in CALayerDisplayIfNeeded ()
#42 0x0403f65b in CA::Context::commit_transaction ()
#43 0x0403f2b0 in CA::Transaction::commit ()
#44 0x04046f5b in CA::Transaction::observer_callback ()
#45 0x02391d1b in __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ ()
#46 0x02326987 in __CFRunLoopDoObservers ()
#47 0x022efc17 in __CFRunLoopRun ()
#48 0x022ef280 in CFRunLoopRunSpecific ()
#49 0x022ef1a1 in CFRunLoopRunInMode ()
#50 0x02c152c8 in GSEventRunModal ()
#51 0x02c1538d in GSEventRun ()
#52 0x002e2b58 in UIApplicationMain ()
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}
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