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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();

The simplest way to turn it off was :

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

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...

VC.One
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Denis
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  • https://developer.android.com/reference/android/hardware/camera2/CameraManager.html#setTorchMode(java.lang.String, boolean) – user0815 May 27 '16 at 11:19
  • Seriously @user0815. The official documentation link? Come on... :p – Denis May 27 '16 at 12:22

1 Answers1

2

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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Eko Putra Pratama
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