Android-Camera2:打开手电筒的最简单方法 [英] Android - Camera2 : The easiest way to turn on the torch light

问题描述

打开手电筒的最简单方法是:

The simplest way to turn on the torch light was :

Camera camera = Camera.open();
Camera.Parameters parameters = camera.getParameters();
parameters.setFlashMode(Camera.Parameters.FLASH_MODE_TORCH);
camera.setParameters(parameters);
camera.startPreview();

最简单的关闭方法是:

Camera camera = Camera.open();
Camera.Parameters parameters = camera.getParameters();
parameters.setFlashMode(Camera.Parameters.FLASH_MODE_OFF);
camera.setParameters(parameters);
camera.stopPreview();

但是，由于不推荐使用Camera类，因此使用Camera2类实现相同结果的最简单方法是什么?我只找到了冗长而复杂的解决方案...

But, as the Camera class is now deprecated, what is the easiest way to achieve the same result with the Camera2 class? I only found long and complicated solutions...

推荐答案

检查Daniel Netzer的回答

check the answer from Daniel Netzer here you just need to write 3 line to turn on torch

CameraManager camManager = (CameraManager) getSystemService(Context.CAMERA_SERVICE);
String cameraId = camManager.getCameraIdList()[0]; // Usually front camera is at 0 position and back camera is 1.
camManager.setTorchMode(cameraId, true);

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