各位朋友，小弟我想用手机点灯一个LED灯，要如何操作。大神给点思路

	private void OpenLightOn() {
		if (null == m_Camera) {
			m_Camera = Camera.open();
		}

		Camera.Parameters parameters = m_Camera.getParameters();
		parameters.setFlashMode(Camera.Parameters.FLASH_MODE_TORCH);
		m_Camera.setParameters(parameters);
		m_Camera.autoFocus(new Camera.AutoFocusCallback() {
			public void onAutoFocus(boolean success, Camera camera) {
			}
		});
		m_Camera.startPreview();
	}

	private void CloseLightOff() {
		if (m_Camera != null) {
			m_Camera.stopPreview();
			m_Camera.release();
			m_Camera = null;
		}
	}