App crashes on back pressed.

[faiqkhan480]

If I open scanner & then pressed back button in few seconds app is crashed.
its happens when I set cardScannerTimeOut to any value greater than 0 & then pressed back before timeout is done.

[94wogus]

same here

[94wogus]

Occurs when you go back by the back button at the bottom of Android.

[94wogus]

i change code
/.pub-cache/hosted/pub.dartlang.org/card_scanner-1.0.1-prerelease/android/src/main/java/com/nateshmbhat/card_scanner/CardScannerCameraActivity.kt

line 187 onBackPressed

override fun onBackPressed() {
    setResult(Activity.RESULT_CANCELED)
    try{
      super.onBackPressed()
    }catch(e: NullPointerException){
      Log.d("NullPointerException")
    }
  }