<?xml version="1.0" encoding="UTF-8"?>
<!--
 Copyright 2014 The Android Open Source Project

 Licensed under the Apache License, Version 2.0 (the "License");
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 See the License for the specific language governing permissions and
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<sample>
    <name>Camera2Basic</name>
    <group>Media</group>
    <package>com.example.android.camera2basic</package>

    <minSdk>21</minSdk>
    <strings>
        <intro>
            <![CDATA[
            This sample demonstrates the basic use of Camera2 API. Check the source code to see how
            you can display camera preview and take pictures.
            ]]>
        </intro>
    </strings>

    <template src="base"/>

        <metadata>
        <status>PUBLISHED</status>
        <categories>Media, Camera, Camera2</categories>
        <technologies>Android</technologies>
        <languages>Java</languages>
        <solutions>Mobile</solutions>
        <level>INTERMEDIATE</level>
        <icon>screenshots/icon-web.png</icon>
        <screenshots>
            <img>screenshots/main.png</img>
        </screenshots>
        <api_refs>
            <android>android.hardware.camera2.CameraManager</android>
            <android>android.hardware.camera2.CameraDevice</android>
            <android>android.hardware.camera2.CameraCharacteristics</android>
            <android>android.hardware.camera2.CameraCaptureSession</android>
            <android>android.hardware.camera2.CaptureRequest</android>
            <android>android.hardware.camera2.CaptureResult</android>
            <android>android.view.TextureView</android>
        </api_refs>

        <description>
<![CDATA[
This sample demonstrates how to use basic functionalities of Camera2
API. You can learn how to iterate through characteristics of all the
cameras attached to the device, display a camera preview, and take
pictures.
]]>
        </description>

        <intro>
<![CDATA[
The [Camera2 API][1] provides an interface to individual camera
devices connected to an Android device. It replaces the deprecated
Camera class.

Use [getCameraIdList][2] to get a list of all the available
cameras. You can then use [getCameraCharacteristics][3] and find the
best camera that suits your need (front/rear facing, resolution etc).

Create an instance of [CameraDevice.StateCallback][4] and open a
camera. It is ready to start camera preview when the camera is opened.

This sample uses TextureView to show the camera preview. Create a
[CameraCaptureSession][5] and set a repeating [CaptureRequest][6] to it.

Still image capture takes several steps. First, you need to lock the
focus of the camera by updating the CaptureRequest for the camera
preview. Then, in a similar way, you need to run a precapture
sequence. After that, it is ready to capture a picture. Create a new
CaptureRequest and call [capture][7]. Don't forget to unlock the focus
when you are done.

[1]: https://developer.android.com/reference/android/hardware/camera2/package-summary.html
[2]: https://developer.android.com/reference/android/hardware/camera2/CameraManager.html#getCameraIdList()
[3]: https://developer.android.com/reference/android/hardware/camera2/CameraManager.html#getCameraCharacteristics(java.lang.String)
[4]: https://developer.android.com/reference/android/hardware/camera2/CameraDevice.StateCallback.html
[5]: https://developer.android.com/reference/android/hardware/camera2/CameraCaptureSession.html
[6]: https://developer.android.com/reference/android/hardware/camera2/CaptureRequest.html
[7]: https://developer.android.com/reference/android/hardware/camera2/CameraCaptureSession.html#capture(android.hardware.camera2.CaptureRequest, android.hardware.camera2.CameraCaptureSession.CaptureCallback, android.os.Handler)
]]>
        </intro>
    </metadata>

</sample>