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Fixed in 5.5.1



Found in


Issue ID




[iOS] Crash in application:openURL:sourceApplication:annotation due to missing null check with Facebook SDK



App crashes in application:openURL:sourceApplication:annotation when returning from login with Facebook SDK. This occurs due to missing nil check.

Steps to reproduce:
1) Open the latest attached project.
2) Build for iOS.
3) Run on a device (connected to Internet).
4) Press 'FB.Init' UI button.
5) Press 'Login' button.
- The app will probably crash now if bundle ID is not set up with Facebook. If not - proceed.
6) If not already logged in, enter your FB credentials and login.

After logging in and returning to the app, a crash occurs in application:openURL:sourceApplication:annotation.

Manually adding nil check to fixes the issue:
auto addItem = [&](NSString* key, id value)
[keys addObject:key];
[values addObject:value];

Needs to be changed to:
auto addItem = [&](NSString* key, id value) {
[keys addObject:key];
if (value == nil) {
[values addObject:[NSNull null]];
} else {
[values addObject:value];

This way, the crash doesn't occur.

Reproduced on:
5.6.0a6, 5.5.0f3

Did not reproduce:

Devices tested:
iPhone 7 iOS 10.2
iPhone 6+ iOS 10.0

Comments (2)

  1. mopsicus

    Apr 04, 2017 09:03

    thx FOURDESIRE, I tired while find to fix it

  2. fourdesire

    Jan 03, 2017 06:34

    I temporarily fixed the issue i mentioned by


    addItem(@"annotation", annotation);


    addItem(@"annotation", annotation ? annotation : @{});

    - (BOOL)application:(UIApplication*)application openURL:(NSURL*)url sourceApplication:(NSString*)sourceApplication annotation:(id)annotation

    because the annotation could be nil

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