标题说明了一切。这是我的代码:
func createCheckBoxButton(xPos: CGFloat, yPos: CGFloat, tag: Int) -> UIButton {
var checkBox = UIButton(frame: CGRect(x: xPos, y: yPos, width: checkBoxSize, height: checkBoxSize))
checkBox.setBackgroundImage(UIImage(named: "checkbox_inactive"), forState: UIControlState.Normal)
checkBox.setBackgroundImage(UIImage(named: "checkbox_pressed"), forState: UIControlState.Highlighted)
checkBox.setBackgroundImage(UIImage(named: "checkbox_active"), forState: UIControlState.Selected)
checkBox.tag = tag
checkBox.contentMode = .ScaleAspectFit
checkBox.addTarget(self, action: "processButton:", forControlEvents: UIControlEvents.TouchUpInside)
return checkBox
}
按下我的按钮时有一个被调用的函数:
func processButton(sender: UIButton) {
if (answerViewArray[sender.tag].backgroundColor == UIColor.whiteColor()) {
answerViewArray[sender.tag].backgroundColor = myColor.pinky()
} else {
answerViewArray[sender.tag].backgroundColor = UIColor.whiteColor()
}
let tag = answerButtonsArray[sender.tag]
answer.buttonPressed(tag)
}
当我启动应用时,checkbox_inactive
图片就在那里。当我按下并按住它时,会出现checkbox_pressed
图像。但是,当我发布点击时,checkbox_inactive
会再次显示,而不是checkbox_active
。
我也试过UIImageView
,这对我来说是最好的解决方案。我将我的复选框设置为UIImageView
,在我的一般视图的顶部,我放置了一个不可见的视图,以便我可以随处点击。但是当我按下我看不见的视图时,UIImageView
就会消失。
以下是代码:
func createCheckBoxButton(xPos: CGFloat, yPos: CGFloat) -> UIImageView {
var checkBox = UIImageView(frame: CGRect(x: xPos, y: yPos, width: checkBoxSize, height: checkBoxSize))
checkBox.image = UIImage(named: "checkbox_inactive")
checkBox.contentMode = .ScaleAspectFit
return checkBox
}
这是一个名为:
的函数func processButton(sender: UIButton) {
if (answerViewArray[sender.tag].backgroundColor == UIColor.whiteColor()) {
answerViewArray[sender.tag].backgroundColor = myColor.pinky()
checkBoxArray[sender.tag].image = UIImage(named: "checkbox-active")
} else {
answerViewArray[sender.tag].backgroundColor = UIColor.whiteColor()
checkBoxArray[sender.tag].image = UIImage(named: "checkbox-inactive")
}
let tag = answerButtonsArray[sender.tag]
answer.buttonPressed(tag)
}
答案 0 :(得分:1)
要在释放按钮时显示checkbox_active,您应该为按下的按钮选择= true。
所以你的功能应该是:
func processButton(sender: UIButton) {
// If button not selected
if(sender.selected==false){
sender.selected = true;
}
else{ // If button already selected
sender.selected = false;
}
// Do your other stuff
}