在Android上打开/关闭相机手电筒

Question

Is it possible to switch between on and off multiple times in a short time the camera flashlight of an Android device? If so, how?

I am trying to create an app that is able to send data over the flashlight blinks.

Answer 1

To do it in code, use this link .

Basically you use the camera flash in the following manner:

private Camera camera;
Parameters params;

private void turnOnFlash() {
        params = camera.getParameters();
        params.setFlashMode(Parameters.FLASH_MODE_TORCH);
        camera.setParameters(params);
        camera.startPreview();
    } 
}