Android Studio中的NoClassDefFoundError

Question

I'm working with camera2 in Android Studio and when testing it I get a NoClassDefFoundError (runtime exception) on this line:
mCameraManager.openCamera("0", new CameraDevice.StateCallback() {
I'm not sure what's causing this, but looking around at NoClassDefFoundError in general leads me to believe that it's caused when the static initialization code for a class (here, presumably CameraDevice.StateCallBack?) throws an exception. I'm wondering how I can fix this error. Do I need to initialize the CameraDevice.StateCallback in some other way?

Answer 1

This is method got added in API level 21 (Lollipop). This means you are testing on a device that has an API lower than 21.

You can always check th documentation .