用Storyboard和代碼實現兩級聯動滾輪選擇器,并實現將確認選中的結果顯示到文本框里.
//Using storyboard and codes to realize the function of making the content of the second component depending on the content of the first component,and there is a "confirm" button , once you click it, the contents you selected will be displayed inside of the textfield.?