crash in gvr::PlatformInfo::GetApplicationName() when instantiating GVRCardboardView

[deeje]

Hi,

I am able to get GVRSDK iOS sample code to run on device, but am hitting a roadblock in my project. After instantiating a GVRCardboardView, it crashes deep inside setVRModeEnabled…

self.cardboardView = [[GVRCardboardView alloc] initWithFrame:stageFrame];
self.cardboardView.context = [[EAGLContext alloc] initWithAPI:kEAGLRenderingAPIOpenGLES2];
self.cardboardView.delegate = self;
self.cardboardView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
self.cardboardView.vrModeEnabled = YES;

EXC_BAD_ACCESS (code=1, address=0x0)

Thread 1 Queue : com.apple.main-thread (serial)
#0 0x0000000180da504c in strlen ()
#1 0x00000001003f8154 in gvr::PlatformInfo::GetApplicationName() const ()
#2 0x00000001003bbb24 in gvr::ServerLogger::BuildLogEvent(wireless_android_play_playlog::VREvent_EventType const&, std::__1::shared_ptr<wireless_android_play_playlog::VREvent>) ()
#3 0x00000001003bc5e0 in gvr::ServerLogger::Log(wireless_android_play_playlog::VREvent_EventType const&, std::__1::shared_ptr<wireless_android_play_playlog::VREvent>) ()
#4 0x00000001003bc4e0 in gvr::ServerLogger::Log(wireless_android_play_playlog::VREvent_EventType const&) ()
#5 0x0000000100391808 in gvr::CardboardApiImpl::CardboardApiImpl(gvr::DisplayMetrics const&, std::__1::shared_ptrgvr::PoseTracker, std::__1::shared_ptr<gvr::SingleTypeEventProducergvr::PoseState >, gvr::CardboardApiImpl::Detectors) ()
#6 0x00000001003912f8 in gvr::CardboardApiImpl::Create() ()
#7 0x0000000100391298 in gvr::CardboardApi::Create() ()
#8 0x0000000100275734 in +[GVRDeviceParamsHelper viewerModelName] ()
#9 0x0000000100284f78 in -[GVRTransitionView loadView] ()
#10 0x00000001002847d4 in -[GVRTransitionView initWithFrame:delegate:] ()
#11 0x000000010027c170 in -[GVROverlayViewController init] ()
#12 0x0000000100272cfc in -[GVRCardboardView presentModal] ()
#13 0x00000001002718e4 in -[GVRCardboardView setVrModeEnabled:] ()
#14 0x000000010016cc44 in -[SCNStageViewController viewDidLoad] at /Users/deeje/Documents/tapprtv-ios/Classes/SCNStageViewController.m:82
…

Does this ring a bell for anyone?

[sanjayc77]

Is this in the iOS Simulator or iOS Device?

[deeje]

on an iPhone 6 running iOS 9.3.5

[skycenter]

@deeje can you share your source code?

[deeje]

@skycenter :-|

contact me directly?

[deeje]

if I don't set vrModeEnabled = true, I still crash the first time thru calling Render

#0 0x0000000180da504c in strlen ()
#1 0x0000000100467624 in gvr::PlatformInfo::GetApplicationName() const ()
#2 0x000000010042aff4 in gvr::ServerLogger::BuildLogEvent(wireless_android_play_playlog::VREvent_EventType const&, std::__1::shared_ptr<wireless_android_play_playlog::VREvent>) ()
#3 0x000000010042bab0 in gvr::ServerLogger::Log(wireless_android_play_playlog::VREvent_EventType const&, std::__1::shared_ptr<wireless_android_play_playlog::VREvent>) ()
#4 0x000000010042b9b0 in gvr::ServerLogger::Log(wireless_android_play_playlog::VREvent_EventType const&) ()
#5 0x0000000100400cd8 in gvr::CardboardApiImpl::CardboardApiImpl(gvr::DisplayMetrics const&, std::__1::shared_ptrgvr::PoseTracker, std::__1::shared_ptr<gvr::SingleTypeEventProducergvr::PoseState >, gvr::CardboardApiImpl::Detectors) ()
#6 0x0000000100400884 in gvr::CardboardApiImpl::Create(gvr::DisplayMetrics const&) ()
#7 0x00000001002e1568 in -[GVRCardboardView initCardboardApi] ()
#8 0x00000001002e0fcc in -[GVRCardboardView render:] ()
#9 0x00000001013bcaa0 in -[DYDisplayLinkInterposer forwardDisplayLinkCallback:] ()
#10 0x0000000183e3422c in CA::Display::DisplayLinkItem::dispatch() ()
#11 0x0000000183e340e0 in CA::Display::DisplayLink::dispatch_items(unsigned long long, unsigned long long, unsigned long long) ()
#12 0x0000000181571e54 in IODispatchCalloutFromCFMessage ()
#13 0x0000000181299030 in __CFMachPortPerform ()
#14 0x00000001812b17d4 in CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION ()
#15 0x00000001812b0f0c in __CFRunLoopDoSource1 ()
#16 0x00000001812aec64 in __CFRunLoopRun ()
#17 0x00000001811d8c50 in CFRunLoopRunSpecific ()
#18 0x00000001812263a4 in CFRunLoopRun ()
#19 0x00000001001e7394 in -[CardboardRenderLoop threadMain] at /Users/deeje/Documents/tapprtv-ios/Classes/CardboardRenderLoop.m:90

[skycenter]

@deeje just emailed you

[sanjayc77]

The gvr::PlatformInfo::GetApplicationName() is constructed from: [[[NSBundle mainBundle]
objectForInfoDictionaryKey:(NSString *)kCFBundleNameKey] UTF8String].

Can you make sure this returns a bundle name properly?

[deeje]

OK, that fixed it. Any reason why you're using that key rather than kCFBundleDisplayNameKey?