1*d353a188SXin Li 2*d353a188SXin LiAndroid Camera2Basic Sample 3*d353a188SXin Li=================================== 4*d353a188SXin Li 5*d353a188SXin LiThis sample demonstrates how to use basic functionalities of Camera2 6*d353a188SXin LiAPI. You can learn how to iterate through characteristics of all the 7*d353a188SXin Licameras attached to the device, display a camera preview, and take 8*d353a188SXin Lipictures. 9*d353a188SXin Li 10*d353a188SXin LiIntroduction 11*d353a188SXin Li------------ 12*d353a188SXin Li 13*d353a188SXin LiThe [Camera2 API][1] provides an interface to individual camera 14*d353a188SXin Lidevices connected to an Android device. It replaces the deprecated 15*d353a188SXin LiCamera class. 16*d353a188SXin Li 17*d353a188SXin LiUse [getCameraIdList][2] to get a list of all the available 18*d353a188SXin Licameras. You can then use [getCameraCharacteristics][3] and find the 19*d353a188SXin Libest camera that suits your need (front/rear facing, resolution etc). 20*d353a188SXin Li 21*d353a188SXin LiCreate an instance of [CameraDevice.StateCallback][4] and open a 22*d353a188SXin Licamera. It is ready to start camera preview when the camera is opened. 23*d353a188SXin Li 24*d353a188SXin LiThis sample uses TextureView to show the camera preview. Create a 25*d353a188SXin Li[CameraCaptureSession][5] and set a repeating [CaptureRequest][6] to it. 26*d353a188SXin Li 27*d353a188SXin LiStill image capture takes several steps. First, you need to lock the 28*d353a188SXin Lifocus of the camera by updating the CaptureRequest for the camera 29*d353a188SXin Lipreview. Then, in a similar way, you need to run a precapture 30*d353a188SXin Lisequence. After that, it is ready to capture a picture. Create a new 31*d353a188SXin LiCaptureRequest and call [capture][7]. Don't forget to unlock the focus 32*d353a188SXin Liwhen you are done. 33*d353a188SXin Li 34*d353a188SXin Li[1]: https://developer.android.com/reference/android/hardware/camera2/package-summary.html 35*d353a188SXin Li[2]: https://developer.android.com/reference/android/hardware/camera2/CameraManager.html#getCameraIdList() 36*d353a188SXin Li[3]: https://developer.android.com/reference/android/hardware/camera2/CameraManager.html#getCameraCharacteristics(java.lang.String) 37*d353a188SXin Li[4]: https://developer.android.com/reference/android/hardware/camera2/CameraDevice.StateCallback.html 38*d353a188SXin Li[5]: https://developer.android.com/reference/android/hardware/camera2/CameraCaptureSession.html 39*d353a188SXin Li[6]: https://developer.android.com/reference/android/hardware/camera2/CaptureRequest.html 40*d353a188SXin Li[7]: https://developer.android.com/reference/android/hardware/camera2/CameraCaptureSession.html#capture(android.hardware.camera2.CaptureRequest, android.hardware.camera2.CameraCaptureSession.CaptureCallback, android.os.Handler) 41*d353a188SXin Li 42*d353a188SXin LiPre-requisites 43*d353a188SXin Li-------------- 44*d353a188SXin Li 45*d353a188SXin Li- Android SDK 27 46*d353a188SXin Li- Android Build Tools v27.0.2 47*d353a188SXin Li- Android Support Repository 48*d353a188SXin Li 49*d353a188SXin LiScreenshots 50*d353a188SXin Li------------- 51*d353a188SXin Li 52*d353a188SXin Li<img src="screenshots/main.png" height="400" alt="Screenshot"/> 53*d353a188SXin Li 54*d353a188SXin LiGetting Started 55*d353a188SXin Li--------------- 56*d353a188SXin Li 57*d353a188SXin LiThis sample uses the Gradle build system. To build this project, use the 58*d353a188SXin Li"gradlew build" command or use "Import Project" in Android Studio. 59*d353a188SXin Li 60*d353a188SXin LiSupport 61*d353a188SXin Li------- 62*d353a188SXin Li 63*d353a188SXin Li- Google+ Community: https://plus.google.com/communities/105153134372062985968 64*d353a188SXin Li- Stack Overflow: http://stackoverflow.com/questions/tagged/android 65*d353a188SXin Li 66*d353a188SXin LiIf you've found an error in this sample, please file an issue: 67*d353a188SXin Lihttps://github.com/googlesamples/android-Camera2Basic 68*d353a188SXin Li 69*d353a188SXin LiPatches are encouraged, and may be submitted by forking this project and 70*d353a188SXin Lisubmitting a pull request through GitHub. Please see CONTRIBUTING.md for more details. 71*d353a188SXin Li 72*d353a188SXin LiLicense 73*d353a188SXin Li------- 74*d353a188SXin Li 75*d353a188SXin LiCopyright 2017 The Android Open Source Project, Inc. 76*d353a188SXin Li 77*d353a188SXin LiLicensed to the Apache Software Foundation (ASF) under one or more contributor 78*d353a188SXin Lilicense agreements. See the NOTICE file distributed with this work for 79*d353a188SXin Liadditional information regarding copyright ownership. The ASF licenses this 80*d353a188SXin Lifile to you under the Apache License, Version 2.0 (the "License"); you may not 81*d353a188SXin Liuse this file except in compliance with the License. You may obtain a copy of 82*d353a188SXin Lithe License at 83*d353a188SXin Li 84*d353a188SXin Lihttp://www.apache.org/licenses/LICENSE-2.0 85*d353a188SXin Li 86*d353a188SXin LiUnless required by applicable law or agreed to in writing, software 87*d353a188SXin Lidistributed under the License is distributed on an "AS IS" BASIS, WITHOUT 88*d353a188SXin LiWARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the 89*d353a188SXin LiLicense for the specific language governing permissions and limitations under 90*d353a188SXin Lithe License. 91
