Setting exposure values on android with OpenCV

[tomy]

Originally Posted by jreneew2

Hello, I finished watching 254's presentation recently and have begun working on a similar android app where it would find the target and send the data back to the roborio. I have opencv running on my phone and can run opencv functions fine.

What i am having trouble with is setting the exposure / iso values from within the code. I am trying to use CaptureRequest.set() and the app instantly crashes saying:

AndroidRuntime: FATAL EXCEPTION: Thread-3171

java.lang.NullPointerException: Attempt to invoke virtual method 'void android.hardware.camera2.CaptureRequest$Builder.set(android.hardware.camera2.CaptureRequest$Key, java.lang.Object)' on a null object reference

My code is here: http://pastebin.com/3XgvKGQN

Any help is appreciated,
Drew (Team 2053)

Not to get of topic but could you link the video. I'd be interested in watching it.