当我点击一个按钮时,我弹出一个按钮面板,按钮上有一个颜色的名称。当我点击该颜色时,下面的代码应该将我的两个按钮更改为所选的颜色,但是现在我选择它,它会打印sender.currentTitle的颜色,如Optional("Red")
。
除非单击按钮,否则按钮的颜色不会改变。事实上,当我点击“红色”时,我调用的红色区域中的打印功能不会打印,因此不会调用该功能。
我点击其中一种颜色时的代码:
@IBAction func button1ActualColorChosen(sender: AnyObject) {
var coliString1 = "\(sender.currentTitle!)"
print("\(coliString1)")
if coliString1 == "Black"{
Button1C.backgroundColor = UIColor.blackColor()
button1Bang.backgroundColor = UIColor.blackColor()
}
if coliString1 == "Red"{
print("red")
Button1C.backgroundColor = UIColor.redColor()
button1Bang.backgroundColor = UIColor.redColor()
}
if coliString1 == "Green"{
Button1C.backgroundColor = UIColor.greenColor()
button1Bang.backgroundColor = UIColor.greenColor()
}
if coliString1 == "Orange"{
Button1C.backgroundColor = UIColor.orangeColor()
button1Bang.backgroundColor = UIColor.orangeColor()
}
if coliString1 == "Blue"{
Button1C.backgroundColor = UIColor.blueColor()
button1Bang.backgroundColor = UIColor.blueColor()
}
if coliString1 == "Cyan"{
Button1C.backgroundColor = UIColor.cyanColor()
button1Bang.backgroundColor = UIColor.cyanColor()
}
if coliString1 == "Brown"{
Button1C.backgroundColor = UIColor.brownColor()
button1Bang.backgroundColor = UIColor.brownColor()
}
if coliString1 == "Gray"{
Button1C.backgroundColor = UIColor.grayColor()
button1Bang.backgroundColor = UIColor.grayColor()
}
if coliString1 == "Purple"{
Button1C.backgroundColor = UIColor.purpleColor()
button1Bang.backgroundColor = UIColor.purpleColor()
}
if coliString1 == "Magenta"{
Button1C.backgroundColor = UIColor.magentaColor()
button1Bang.backgroundColor = UIColor.magentaColor()
}
Button1C.alpha = 1
}
正如你所看到的,我把颜色分开导致Idk如何不这样做。如何调用说if coliString1 == "Red"{}"
等的函数
答案 0 :(得分:1)
行
至少存在一个问题var coliString1 = "\(sender.currentTitle!)"
自sender.currentTitle以来!返回一个你不需要使用字符串插值的字符串来将它分配给变量coliString1。另外使用switch语句可以帮助清理一些东西。
@IBAction func button1ActualColorChosen(sender: AnyObject) {
let button = sender as! UIButton
let coliString1 = button.currentTitle
var newColor = UIColor()
if let cs1 = coliString {
switch cs1 {
case "Black":
newColor = UIColor.blackColor()
case "Red":
newColor = UIColor.redColor()
case "Green":
newColor = UIColor.greenColor()
case "Orange":
newColor = UIColor.orangeColor()
case "Blue":
newColor = UIColor.blueColor()
case "Cyan":
newColor = UIColor.cyanColor()
case "Brown":
newColor = UIColor.brownColor()
case "Gray":
newColor = UIColor.grayColor()
case "Purple":
newColor = UIColor.purpleColor()
case "Magenta":
newColor = UIColor.magentaColor()
default:
newColor = UIColor.clearColor()
}
}
Button1C.backgroundColor = newColor
button1Bang.backgroundColor = newColor
Button1C.alpha = 1
}