how to check if device has flash light led android

Question

How can I check if a device has a camera led (flashlight). I am talking about devices with android OS?

I have seen solutions some solutions which talks about how to turn the led on and off but what will happen if the device doesn't even has a led.

for turning on the camera I am using camera.open()

Answer 1

The other answers

boolean hasFlash = this.getPackageManager().hasSystemFeature(PackageManager.FEATURE_CAMERA_FLASH);

Does not work for the new 2013 Nexus 7. The following code will work:

public boolean hasFlash() {
        if (camera == null) {
            return false;
        }

        Camera.Parameters parameters;
        try {
            parameters = camera.getParameters();
        } catch (RuntimeException ignored)  {
            return false;
        }

        if (parameters.getFlashMode() == null) {
            return false;
        }

        List<String> supportedFlashModes = parameters.getSupportedFlashModes();
        if (supportedFlashModes == null || supportedFlashModes.isEmpty() || supportedFlashModes.size() == 1 && supportedFlashModes.get(0).equals(Camera.Parameters.FLASH_MODE_OFF)) {
            return false;
        }

        return true;
    }