Swift5问卷App，包含数据持久化，图像存储与显示，自定义画板与绘图等功能，适配暗色模式

中文版 | English

1. 单选
2. 数字填空
3. 编辑数字填空题及答案
4. 得分

• “Edit”按钮可以删除或对问题进行重排序，“+”按钮会创建一个问题；
• 点击问题或“+”按钮会进入该问题详情视图。

  详情视图

  • 输入或修改问题及答案。
  • 显示该问题的创建时间；
  • 输入或修改该问题的图片。

  图片

  • 添加一个图片到当前问题，拍照或上传相册中的图片，非必须；
  • 如果已有图片并再次添加图片，前一张图片会被替换；
  • 删除按钮可以删除当前图片。

  画板

  • 新建空画板，可画直线图；
  • 在直线上点击可以删除该线或改变该线的颜色；
  • 在直线上长按可以移动该线；
  • 空白处双击可以清空画板；
  • 长按空白处会弹出菜单，改变画笔颜色。

• 显示当前已答题数，错误/正确题目数；
• 根据正确/错误题目数量调整背景颜色。

除画板外其他视图已适配暗色模式。

中文版 | English

Quiz Application base on Swift5 & UIKit, providing implements including data persistence, image storage, and drawer canvas.

1. Multiple-choice Questions
2. Numerical fill-in-blank Questions
3. Edit
4. Score

• Having an "Edit" button on the left (which allows deleting and reordering of questions) and a "+" button on the right.
• Tapping on one of the questions or the "+" button would get to the detail view.

  Detail View

  • Enter the question text for a new question or edit the text of an existing question.
  • Enter the answer text for a new question or edit the text of an existing answer.
  • Display the date and time the question was created (can't edit).
  • Enter/edit an optional image associated with each question.

  Image

  • Optionally add images to questions.
  • (For example, imagine a captcha-type question in which a picture of a street scene is displayed and the user is asked how many traffic lights are in the picture).
  • Camera button allows to take a picture if there is a camera available, otherwise pick from the photo library. - Take/ Choose a picture again would replace the former one.
  • Tap on the trash button would delete the associate image.

  Draw

  • Draw line pictures (straight lines only).
  • Tap on a line to delete it or change the color of the line to one of 4 colors.
  • Move existing lines around using long press (on a line) and pan.
  • Double tapping anywhere on the canvas deletes all lines but asks to confirm this operation first.
  • A long press on a blank part of the canvas (not on an existing line) brings up a menu to change the "pen color" so any future lines are drawn in that color.
  • Black: Finished lines, Red: Drawing line, Green: Selected line.

• Shows a message how many questions have gotten correct/incorrect.
• Updated every time it is viewed.
• Whenever have more correct answers than incorrect answers, the background of this view is green.
• Whenever have more incorrect than correct answers, the background is red.
• When the number of incorrect and correct answers are the same, the background is clear.

Adapt to dark mode except the draw view.