Display a Back-Facing Camera Full-Screen Preview
For this initial camera app shown below, we’ll display the view seen by the back-facing Android camera. The illustration shows a camera preview image at a resolution of 1280×768 pixels, displayed on the touch screen of a Google Nexus 6, whose resolution is 2560 ×1440 pixels.
We’ll use the KetaiCamera class to connect to and start the camera. The KetaiCamera class streamlines this process significantly for us. For example, creating a simple camera preview app using KetaiCamera takes about ten lines of code, compared with about three hundred documented on the Android developer site.[121] KetaiCamera ...
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