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.
The Camera2 API provides an interface to individual camera devices connected to an Android device. It replaces the deprecated Camera class.
Use getCameraIdList to get a list of all the available cameras. You can then use getCameraCharacteristics and find the best camera that suits your need (front/rear facing, resolution etc).
Create an instance of CameraDevice.StateCallback 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 and set a repeating CaptureRequest 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]. Don't forget to unlock the focus when you are done.
: https://developer.android.com/reference/android/hardware/camera2/CameraCaptureSession.html#capture(android.hardware.camera2.CaptureRequest, android.hardware.camera2.CameraCaptureSession.CaptureCallback, android.os.Handler)
This sample uses the Gradle build system. To build this project, use the “gradlew build” command or use “Import Project” in Android Studio.
If you've found an error in this sample, please file an issue: https://github.com/googlesamples/android-Camera2Basic
Patches are encouraged, and may be submitted by forking this project and submitting a pull request through GitHub. Please see CONTRIBUTING.md for more details.
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