How to turn on the Android Flashlight

Question

Update

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Original

I\'m trying to turn on the camera flashlight on the LG Revolution within my pro

Answer 1

/*TESTED LG G4 */
public void flashOnOff(){
    List flashModes = parameter001.getSupportedFlashModes();

    if(flashModes != null &&    flashModes.contains(Parameters.FLASH_MODE_TORCH)){

        //appareil supportant le mode torch
        parameter001.setFlashMode(Parameters.FLASH_MODE_TORCH);
        mCamera.setParameters(parameter001);
    } else if (flashModes != null && flashModes.contains(Parameters.FLASH_MODE_ON)){

        //spécial samsung
        parameter001.setFlashMode(Parameters.FLASH_MODE_ON);
        mCamera.setParameters(parameter001);

        mCamera.autoFocus(new AutoFocusCallback() {
            public void onAutoFocus(boolean success, Camera camera) { }
        });
    } else {
        parameter001.setFlashMode(Parameters.FLASH_MODE_OFF);
        mCamera.setParameters(parameter001);
    } 
    if (!isFlashOn) {
        if (mCamera == null || parameter001 == null) {
            return;
        }

        parameter001 = mCamera.getParameters();
        parameter001.setFlashMode(Parameters.FLASH_MODE_TORCH);
        mCamera.setParameters(parameter001);
        try {
            mCamera.setPreviewTexture(new SurfaceTexture(0));
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        mCamera.startPreview();
        isFlashOn = true;

        // changing button/switch image

    }else if (isFlashOn) {
        if (mCamera == null || parameter001 == null) {
            return;
        }

        parameter001 = mCamera.getParameters();
        parameter001.setFlashMode(Parameters.FLASH_MODE_OFF);
        mCamera.setParameters(parameter001);
        mCamera.stopPreview();
        isFlashOn = false;


    }
}