public BoxingCropOption getCropOption() {
        return mCropOption;
    }
The pick config.<br/>
1.{@link Mode} is necessary. <br/>
2.specify functions: camera, gif, paging. <br/>
calling {@link #needCamera(int)} to displayThumbnail a camera icon. <br/>
calling {@link #needGif()} to displayThumbnail gif photos. <br/>
calling {@link #needPaging(boolean)} to create load medias page by page, by default is true.

@author ChenSL
boxing/src/main/java/com/bilibili/boxing/model/config/BoxingConfig.java