react-native-nfc-manager: App crash with Null pointer Exception when press start Tag detection in example
Hi,
I have followed the Readme and trying the example.
The example screen showing however the app crashed after i pressed start tag detection

My environment:
environment:
OS: Android 4.2.1
Packages: (installed)
react: 16.3.0-alpha.1
react-native: 0.54.3
react-native-nfc-manager: ^0.3.2
Logcat in android studio:
E/AndroidRuntime: FATAL EXCEPTION: mqt_native_modules
java.lang.NullPointerException
at java.lang.AbstractStringBuilder.<init>(AbstractStringBuilder.java:86)
at java.lang.StringBuilder.<init>(StringBuilder.java:95)
at com.facebook.react.devsupport.DevSupportManagerImpl$JSExceptionLogger.log(DevSupportManagerImpl.java:303)
at com.facebook.react.devsupport.DevSupportManagerImpl.handleException(DevSupportManagerImpl.java:287)
at com.facebook.react.bridge.CatalystInstanceImpl.onNativeException(CatalystInstanceImpl.java:501)
at com.facebook.react.bridge.CatalystInstanceImpl.access$900(CatalystInstanceImpl.java:40)
at com.facebook.react.bridge.CatalystInstanceImpl$NativeExceptionHandler.handleException(CatalystInstanceImpl.java:517)
at com.facebook.react.bridge.queue.MessageQueueThreadHandler.dispatchMessage(MessageQueueThreadHandler.java:33)
at android.os.Looper.loop(Looper.java:137)
at com.facebook.react.bridge.queue.MessageQueueThreadImpl$3.run(MessageQueueThreadImpl.java:194)
at java.lang.Thread.run(Thread.java:856)
Would you please let me know how to fix the issue. Thank you.
About this issue
- Original URL
- State: closed
- Created 6 years ago
- Comments: 16 (11 by maintainers)
@christianchown +1, I think it’s related to my previous comment: https://github.com/whitedogg13/react-native-nfc-manager/issues/45#issuecomment-399759177