A simple practice project. It can:
1.Read Json file and parse Json data.
2.Display a list of tourism attractions or scenes in a table view.
3.Display detailed information about one attraction (or scene).
4.Download and display an image from internet.
5.Edit the information by selecting words and click "Mark" botton.
6.The font in textView will automaticlly change while the defaul font setting is changed by user.
7.Adjust device orientation setting which allowed tableView to rotate and SceneDetailView maintain portrait.