我有三个不同的文本框,在其中需要使用3个不同的“ textViewDidChange”方法。将它们组合为一个功能对我不起作用,因为它们是三种可能相互影响的不同动作。所以我试图做以下三个不同的功能。但是我收到“无效的重新声明”错误。我该如何解决?
func textViewDidChange(messageTxt1: UITextView) {
var len = count(messageTxt.text.utf16)
var diff = 90 - len
if diff < 0 {
charsLbl.textColor = UIColor.redColor()
} else {
charsLbl.textColor = UIColor.blackColor()
}
charsLbl.text = "\(diff) chars left"
}
func textViewDidChange (messageTxt2: UITextView) {
refreshResults()
var len2 = count(messageTxt2.text.utf16)
if len2 > 3 {
println("search")
}
else
{
resultsTable.hidden = true
}
var diff2 = 30 - len2
if diff2 < 0 {
charsLbl2.textColor = UIColor.redColor()
} else {
charsLbl2.textColor = UIColor.blackColor()
}
charsLbl2.text = "\(diff2) chars left"
}
func textViewDidChange (messageTxt3: UITextView) {
var len3 = count(messageTxt3.text.utf16)
var diff3 = 30 - len3
if diff3 < 0 {
charsLbl3.textColor = UIColor.redColor()
} else {
charsLbl3.textColor = UIColor.blackColor()
}
charsLbl3.text = "\(diff3) chars left"
}
最佳答案
您正在创建具有相同名称textViewDidChange
的三个方法。
在您的情况下,请使用tag
属性,并为全部定义一个方法。
例
let textView1 = UITextView()
textView1.tag = 1
let textView2 = UITextView()
textView2.tag = 2
let textView3 = UITextView()
textView3.tag = 3
In method just add condition for that.
func textViewDidChange (messageTxt: UITextView) {
if messageTxt.tag == 1
{
// Your code for textview 1
}
else if messageTxt.tag == 2
{
// Your code for textview 2
}
else if messageTxt.tag == 3
{
// Your code for textview 3
}}