java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.Thread$State java.lang.Thread.getState()' on a null object reference about barcode-reader

[muhammad-farhan-bakht]

Hey guys I hope everyone is doing great.

Recently I have also faced this Bug and solved it. I have made the Pull Request for this bug.

In the meantime, if you want to fix it temporarily till @ravi8x merges the PR you can do the following.

1. Download or Cloned the Library.
2. Import this Library as a module in your Project.
3. When completing steps 1 & 2 now go to CameraSource.java class.
4. Remove this line assert (mProcessingThread.getState() == State.TERMINATED);

It will fix the bug.

Thanks!

[Brayan1863]

I recently solved this error by uploading the same repository and making the adjustment since it has not received updates for a while, you just change the name of the package and that's it

https://github.com/Brayan1863/Barcode-Reader

[nanometer34688]

@azzaxx Have you managed to fix this issue?

[Adnan-addi]

having same issue in on destroy activity , any fix would help thank you

[Tahaelhosseny]

if anyone solves it please write your solution

[KushalMehta1995]

have anyone solved it? please write your solution

[SagarMaher2]

I recently solved this error by uploading the same repository and making the adjustment since it has not received updates for a while, you just change the name of the package and that's it

https://github.com/Brayan1863/Barcode-Reader

This resolve my app crash issue.

[vikas0]

why was the line -
assert (mProcessingThread.getState() == Thread.State.TERMINATED);
was there in the first place.

I first added a null check for mProcessingThread before the line, it fixed the crash, later i realised this line was not at all needed. As before release method is called =, stop() was already callled and mProcessingThread is actually set null.