如何從UIButton獲取圖像？

Question

我在我的應用程序中設置了圖像的自定義按鈕。我想從按鈕獲取圖像並存儲在UIImage變量中。請引導我。

Answer 1

這個怎麼樣？

UIImage *img = [button imageForState:UIControlStateNormal]; 

Answer 2

UIImage *myNewImage = [UIButton imageForState:UIControlStateNormal];

雖然這不是很好的設計實踐。我這樣做：

UIImage *myNewImage = [UIImage imageNamed:@"name of image that is in your bundle"];

Answer 3

雨燕3.0語法

let image: UIImage = yourButton.image(for: .normal)!