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102 lines
4.1 KiB
102 lines
4.1 KiB
<?xml version="1.0" encoding="UTF-8"?>
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<!--
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Copyright 2014 The Android Open Source Project
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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-->
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<sample>
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<name>Camera2Basic</name>
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<group>Media</group>
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<package>com.example.android.camera2basic</package>
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<minSdk>21</minSdk>
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<strings>
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<intro>
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<![CDATA[
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This sample demonstrates the basic use of Camera2 API. Check the source code to see how
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you can display camera preview and take pictures.
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]]>
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</intro>
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</strings>
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<template src="base"/>
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<metadata>
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<status>PUBLISHED</status>
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<categories>Media, Camera, Camera2</categories>
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<technologies>Android</technologies>
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<languages>Java</languages>
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<solutions>Mobile</solutions>
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<level>INTERMEDIATE</level>
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<icon>screenshots/icon-web.png</icon>
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<screenshots>
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<img>screenshots/main.png</img>
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</screenshots>
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<api_refs>
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<android>android.hardware.camera2.CameraManager</android>
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<android>android.hardware.camera2.CameraDevice</android>
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<android>android.hardware.camera2.CameraCharacteristics</android>
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<android>android.hardware.camera2.CameraCaptureSession</android>
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<android>android.hardware.camera2.CaptureRequest</android>
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<android>android.hardware.camera2.CaptureResult</android>
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<android>android.view.TextureView</android>
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</api_refs>
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<description>
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<![CDATA[
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This sample demonstrates how to use basic functionalities of Camera2
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API. You can learn how to iterate through characteristics of all the
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cameras attached to the device, display a camera preview, and take
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pictures.
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]]>
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</description>
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<intro>
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<![CDATA[
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The [Camera2 API][1] provides an interface to individual camera
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devices connected to an Android device. It replaces the deprecated
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Camera class.
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Use [getCameraIdList][2] to get a list of all the available
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cameras. You can then use [getCameraCharacteristics][3] and find the
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best camera that suits your need (front/rear facing, resolution etc).
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Create an instance of [CameraDevice.StateCallback][4] and open a
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camera. It is ready to start camera preview when the camera is opened.
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This sample uses TextureView to show the camera preview. Create a
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[CameraCaptureSession][5] and set a repeating [CaptureRequest][6] to it.
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Still image capture takes several steps. First, you need to lock the
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focus of the camera by updating the CaptureRequest for the camera
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preview. Then, in a similar way, you need to run a precapture
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sequence. After that, it is ready to capture a picture. Create a new
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CaptureRequest and call [capture][7]. Don't forget to unlock the focus
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when you are done.
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[1]: https://developer.android.com/reference/android/hardware/camera2/package-summary.html
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[2]: https://developer.android.com/reference/android/hardware/camera2/CameraManager.html#getCameraIdList()
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[3]: https://developer.android.com/reference/android/hardware/camera2/CameraManager.html#getCameraCharacteristics(java.lang.String)
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[4]: https://developer.android.com/reference/android/hardware/camera2/CameraDevice.StateCallback.html
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[5]: https://developer.android.com/reference/android/hardware/camera2/CameraCaptureSession.html
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[6]: https://developer.android.com/reference/android/hardware/camera2/CaptureRequest.html
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[7]: https://developer.android.com/reference/android/hardware/camera2/CameraCaptureSession.html#capture(android.hardware.camera2.CaptureRequest, android.hardware.camera2.CameraCaptureSession.CaptureCallback, android.os.Handler)
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]]>
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</intro>
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</metadata>
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</sample>
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