/**
     * 开启相机
     * 参数1: 上下文
     * 参数2: 请求码,用于onActivityResult
     */
    CameraUtil.getInstance().startCamera(this, 100);

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if(data == null){
            return;
        }
        if (requestCode == 100) {
            //图片的路径
            String img_path = data.getStringExtra(Constants.IntentKeyFilePath);
        }
    }