cannot read property 'activateShield' of null

[qomi-cupist]

1. Can I just type the code together? How should I change it?

  useEffect(() => {
    if (Platform.OS === 'ios') {
      ScreenGuardModule?.register(
        //insert any hex color you want here, default black if null or empty
        '#000000',
        _ => {
          // .....do anything you want after the screenshot
        },
      );
    }
  }, []);

2. And if you want to perform this action when the capture button is clicked on a specific page.. Can I use the same as above? When I put it in useEffect, there was an issue where a black screen was set without capturing

[gbumps]

1. have you cd ios && pod install yet ? Please double check README again to continue.
2. the module has already been registered and run until unregisted is called. So call the function only ONCE is enough.

When I put it in useEffect, there was an issue where a black screen was set without capturing -> describe your problem more detail, iOS version running, simulator, library version you are using.

[qomi-cupist]

1.It works fine after cd ios && pod install, thank you🙂 , but the same issue occurs on Android. Share the device type

• ios version: 16.1.1
• android version: 10

2. I solved it, thank you

[qomi-cupist]

hmm... sorry It happens on android for both 1 and 2, can you tell me why? 🥲

[gbumps]

have you check this yet ?

https://github.com/gbumps/react-native-screenguard#post-installation-setting-for-android-important

if yes, open Android Studio and check the module react-native-screenguard in the Project section to see if it is linked automatically yet. (i recommend to use yarn install for autolinking).

I have checked on Android and still run normally. (I'm running v.0.2.0 (latest), Android 10, react-native 0.71.8)

[qomi-cupist]

I'm running v.0.2.0 (latest), Android 10, react-native 0.70.7

I think it would be good if you also update the version of react native. For example, 'RN 0.71 and higher'

Thanks for the quick reply 🙇‍♀️

[meredithvf]

I am getting the same error: cannot read property 'activateShield' of null. I am running with expo on ios and have followed the installation & setup including cd ios && pod install. My react version is 0.72.6.

[gbumps]

@meredithvf please eject expo first to continue and try latest version of react-native-screenguard v0.3.5.

[antonyjo1]

The same error on Expo 51.0.26 and RN 0.74.5 IOS. On simulator everything is ok but on device shows the error.