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我有一个UITableView与多个单元格,并在每个单元格中是一个按钮。第一个单元格中的按钮为绿色,其余为灰色。我想设置它,以便如果用户点击任何灰色按钮,第一个单元格中的按钮变为灰色,并且点击的按钮变为绿色。无法更改UItableViewCell上的按钮图像点击
@IBOutlet weak var answeredTick: UIButton!
cell.answeredTick.tag = indexPath.row
@IBAction func answerTickPressed(sender: AnyObject) {
guard let answeredTick = sender as? UIButton else { return }
if let buttonToMakeGrey = answeredTick.viewWithTag(0) as? UIButton {
buttonToMakeGrey.setImage(UIImage(named: "greyTick.png"), forState: UIControlState.Normal)
} else {
print("no success")
}
if let buttonToMakeGrey = answeredTick.viewWithTag(answeredTick.tag) as? UIButton {
buttonToMakeGrey.setImage(UIImage(named: "greenTick.png"), forState: UIControlState.Normal)
} else {
print("no success 1")
}
}
上面的问题总是无法将绿色标记更改为灰色,并打印出“不成功”。为什么这个,我该如何解决它?