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      1 <?xml version="1.0" encoding="UTF-8"?>
      2 <!--
      3  Copyright 2014 The Android Open Source Project
      4 
      5  Licensed under the Apache License, Version 2.0 (the "License");
      6  you may not use this file except in compliance with the License.
      7  You may obtain a copy of the License at
      8 
      9      http://www.apache.org/licenses/LICENSE-2.0
     10 
     11  Unless required by applicable law or agreed to in writing, software
     12  distributed under the License is distributed on an "AS IS" BASIS,
     13  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     14  See the License for the specific language governing permissions and
     15  limitations under the License.
     16 -->
     17 
     18 
     19 
     20 <sample>
     21     <name>Camera2Basic</name>
     22     <group>Media</group>
     23     <package>com.example.android.camera2basic</package>
     24 
     25     <minSdk>21</minSdk>
     26     <strings>
     27         <intro>
     28             <![CDATA[
     29             This sample demonstrates the basic use of Camera2 API. Check the source code to see how
     30             you can display camera preview and take pictures.
     31             ]]>
     32         </intro>
     33     </strings>
     34 
     35     <template src="base"/>
     36 
     37         <metadata>
     38         <status>PUBLISHED</status>
     39         <categories>Media, Camera, Camera2</categories>
     40         <technologies>Android</technologies>
     41         <languages>Java</languages>
     42         <solutions>Mobile</solutions>
     43         <level>INTERMEDIATE</level>
     44         <icon>screenshots/icon-web.png</icon>
     45         <screenshots>
     46             <img>screenshots/main.png</img>
     47         </screenshots>
     48         <api_refs>
     49             <android>android.hardware.camera2.CameraManager</android>
     50             <android>android.hardware.camera2.CameraDevice</android>
     51             <android>android.hardware.camera2.CameraCharacteristics</android>
     52             <android>android.hardware.camera2.CameraCaptureSession</android>
     53             <android>android.hardware.camera2.CaptureRequest</android>
     54             <android>android.hardware.camera2.CaptureResult</android>
     55             <android>android.view.TextureView</android>
     56         </api_refs>
     57 
     58         <description>
     59 <![CDATA[
     60 This sample demonstrates how to use basic functionalities of Camera2
     61 API. You can learn how to iterate through characteristics of all the
     62 cameras attached to the device, display a camera preview, and take
     63 pictures.
     64 ]]>
     65         </description>
     66 
     67         <intro>
     68 <![CDATA[
     69 The [Camera2 API][1] provides an interface to individual camera
     70 devices connected to an Android device. It replaces the deprecated
     71 Camera class.
     72 
     73 Use [getCameraIdList][2] to get a list of all the available
     74 cameras. You can then use [getCameraCharacteristics][3] and find the
     75 best camera that suits your need (front/rear facing, resolution etc).
     76 
     77 Create an instance of [CameraDevice.StateCallback][4] and open a
     78 camera. It is ready to start camera preview when the camera is opened.
     79 
     80 This sample uses TextureView to show the camera preview. Create a
     81 [CameraCaptureSession][5] and set a repeating [CaptureRequest][6] to it.
     82 
     83 Still image capture takes several steps. First, you need to lock the
     84 focus of the camera by updating the CaptureRequest for the camera
     85 preview. Then, in a similar way, you need to run a precapture
     86 sequence. After that, it is ready to capture a picture. Create a new
     87 CaptureRequest and call [capture][7]. Don't forget to unlock the focus
     88 when you are done.
     89 
     90 [1]: https://developer.android.com/reference/android/hardware/camera2/package-summary.html
     91 [2]: https://developer.android.com/reference/android/hardware/camera2/CameraManager.html#getCameraIdList()
     92 [3]: https://developer.android.com/reference/android/hardware/camera2/CameraManager.html#getCameraCharacteristics(java.lang.String)
     93 [4]: https://developer.android.com/reference/android/hardware/camera2/CameraDevice.StateCallback.html
     94 [5]: https://developer.android.com/reference/android/hardware/camera2/CameraCaptureSession.html
     95 [6]: https://developer.android.com/reference/android/hardware/camera2/CaptureRequest.html
     96 [7]: https://developer.android.com/reference/android/hardware/camera2/CameraCaptureSession.html#capture(android.hardware.camera2.CaptureRequest, android.hardware.camera2.CameraCaptureSession.CaptureCallback, android.os.Handler)
     97 ]]>
     98         </intro>
     99     </metadata>
    100 
    101 </sample>
    102