如何在Xcode 8.2中声明UIImage对象

Question

let hopAnimation:[UIImage] = UIImage(named:"background")

我这样做，但Xcode告诉我：

Expected ',' separator Fix-it insert ','

Answer 1

我尝试了你的代码。它向我展示了Cannot convert value of type 'UIImage?' to specified type '[UIImage]'。然后我删除了[UIImage]

let hopAnimation = UIImage(named:"background")

现在它没有显示错误

我必须告诉你

[UIImage] is an array of images.Here you are not creating array of image.You create only image.So remove the array of images.

Answer 2

[UIImage]声明了一系列图像。要创建单个图像，请使用：

var hopAnimation = UIImage(named:"background")