Docs / Camera Wireless SDK for Android

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Live View

This page shows how to obtain live view of connected camera devices using RICOH Camera Wireless SDK.

Contents

The following interfaces and classes are used when you obtain live view:

CameraEventListener

  • The CameraEventListener class is a event listener which receives notifications from camera devices.

CameraDevice

  • The CameraDevice interface represents a camera device.
  • This interface include methods for obtaining camera information and operating camera device.

Set up Live View Event

To start live view, override the virtual method liveViewFrameUpdated included in the CameraEventListener class with the user-defined derived class.
JPEG data is streamed all the time, which keeps calling liveViewFrameUpdated.

class UserEventListener extends CameraEventListener {
    // Display liveViewFrame in imageView
    @Override
    public void liveViewFrameUpdated(
            CameraDevice sender, byte[] liveViewFrame) {
        final Bitmap bitmap =
                BitmapFactory.decodeByteArray(
                        liveViewFrame, 0, liveViewFrame.length);
        getActivity().runOnUiThread(new Runnable() {
            @Override
            public void run() {
                imageView.setImageBitmap(bitmap);
            }
        });
    }
}

Start Live View

Use the startLiveView to start live view.

CameraEventListener cameraEventListener = new UserEventListener();
cameraDevice.addEventListener(cameraEventListener);
Response response = cameraDevice.startLiveView();

Stop Live View

Use the stopLiveView to stop live view.

Response response = cameraDevice.stopLiveView();

See Also

  • Events - Describes events such as liveViewFrameUpdated.