Flash light turn on programatically example using android

 <!-- Allows access to the flashlight -->

 <permission android:name="android.permission.FLASHLIGHT"

             android:permissionGroup="android.permission-group.HARDWARE_CONTROLS"

             android:protectionLevel="normal"

             android:label="@string/permlab_flashlight"

             android:description="@string/permdesc_flashlight"/>

Code Snippet to turn on camera flash light.

Camera cam = Camera.open();     

Parameters p = cam.getParameters();

p.setFlashMode(Parameters.FLASH_MODE_TORCH);

cam.setParameters(p);

cam.startPreview();

Code snippet to turn off camera led light.

  cam.stopPreview();

  cam.release();