我一直在努力将Camera2 api集成到我的应用中。当我从纵向模式切换为横向模式时，会引发异常
java.lang.IllegalStateException: CameraDevice was already closed
at android.hardware.camera2.impl.CameraDeviceImpl.checkIfCameraClosedOrInError(CameraDeviceImpl.java:1984)
at android.hardware.camera2.impl.CameraDeviceImpl.submitCaptureRequest(CameraDeviceImpl.java:825)
at android.hardware.camera2.impl.CameraDeviceImpl.setRepeatingRequest(CameraDeviceImpl.java:880)
at android.hardware.camera2.impl.CameraCaptureSessionImpl.setRepeatingRequest(CameraCaptureSessionImpl.java:231)
at com.essentialsln.memtalk.ui.fragments.Camera2Fragment$11.onConfigured(Camera2Fragment.java:795)
at java.lang.reflect.Method.invoke(Native Method)
at android.hardware.camera2.dispatch.InvokeDispatcher.dispatch(InvokeDispatcher.java:39)
at android.hardware.camera2.dispatch.HandlerDispatcher$1.run(HandlerDispatcher.java:65)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:148)
at android.os.HandlerThread.run(HandlerThread.java:61)
最佳答案
我遇到了类似的问题，这对我有所帮助。如果您一直在引用Sample app，则应通过重写onClosed（CameraDevice）方法来停止CameraDevice.StateCallback中的线程：
mCameraDevice.createCaptureSession(outputSurfaces,
new CameraCaptureSession.StateCallback() {
@Override
public void onClosed(@NonNull CameraCaptureSession session) {
super.onClosed(session);
stopBackgroundThread();
}