导入包import android.hardware.camera2.*;

有两个缩略词AE（auto-exposure (AE)），AF（auto-focus (AF) modes）

重要的类和接口

CameraManager

方法：openCamera

getCameraCharacteristics

getCameraIdList

               Activity activity = getActivity();

                CameraManager manager = (CameraManager) activity.getSystemService(Context.CAMERA_SERVICE);

CameraDevice

方法

createCaptureRequest

createCaptureSession

CameraCaptureSession

方法

capture

setRepeatingRequest

stopRepeating

abortCaptures

类成员

CaptureCallback

CaptureRequest

主要使用的静态成员

CaptureRequest.CONTROL_AE_PRECAPTURE_TRIGGER

CaptureRequest.CONTROL_AE_PRECAPTURE_TRIGGER_START

CaptureRequest.CONTROL_AE_STATE_FLASH_REQUIRED

CaptureRequest.CONTROL_AF_TRIGGER

CaptureRequest.CONTROL_AF_MODE

CaptureRequest.CONTROL_AF_MODE_CONTINUOUS_PICTURE

类成员

Builder

CameraCharacteristics

主要使用的静态成员

CameraCharacteristics.SCALER_STREAM_CONFIGURATION_MAP

CameraCharacteristics.LENS_FACING

CameraCharacteristics.LENS_FACING_FRONT

CameraCharacteristics.SENSOR_ORIENTATION

CameraCharacteristics.FLASH_INFO_AVAILABLE

初始化类对象

CameraCharacteristics characteristics

                        = manager.getCameraCharacteristics(cameraId);