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[英]Add icon or image in UITextField on left / right in Swift 4
[英]Change right icon image UITextField
我試圖在rightView UIImage之間進行切換,這些UIImage作為SubView添加到我的UITextfield中。 當用戶點擊圖標時,它應該顯示或隱藏所插入的密碼,並根據狀態更改UIImage。
我如何編輯下面的代碼來實現這一目標?
碼:
// Show eye icon to show the password
func textFieldDidChange() {
if passwordField.text != "" {
let leftImageView = UIImageView()
leftImageView.image = UIImage(named: "view_password")
leftImageView.contentMode = .scaleAspectFit
let leftView = UIView()
leftView.addSubview(leftImageView)
leftView.frame = CGRect(x: 0, y: 0, width: 40, height: 30)
leftImageView.frame = CGRect(x: 10, y: 10, width: 20, height: 12)
passwordField.rightViewMode = .whileEditing
passwordField.rightView = leftView
let tapgesture = UITapGestureRecognizer(target: self, action: #selector(ViewController.togglePasswordSecurity))
leftImageView.isUserInteractionEnabled = true
leftImageView.addGestureRecognizer(tapgesture)
}else{
passwordField.rightViewMode = .never
}
}
func togglePasswordSecurity(imageView: UIImageView) {
if passwordField.isSecureTextEntry == false {
// change left UIImage to hide_password
passwordField.isSecureTextEntry = true
}else{
// change left UIImage to view_password
passwordField.isSecureTextEntry = false
}
}
非常感謝!
您是否嘗試過為每個圖像添加標簽? 例如:
let leftImageView = UIImageView()
leftImageView.image = UIImage(named: "view_password")
leftImageView.contentMode = .scaleAspectFit
leftImageView.tag = 1
然后,要更改該圖像,您可以編寫:
let myImage = UIView(withTag: 1) as! UIImageView
myImage.image = ...
編輯:要在2張圖像之間切換,只需更改以下內容即可:func togglePasswordSecurity(imageView:UIImageView){
if passwordField.isSecureTextEntry == false {
let myImage = UIView(withTag: 1) as! UIImageView
myImage.image = YOUR_IMAGE_1
// change left UIImage to hide_password
passwordField.isSecureTextEntry = true
}else{
let myImage = UIView(withTag: 1) as! UIImageView
myImage.image = YOUR_IMAGE_2
// change left UIImage to view_password
passwordField.isSecureTextEntry = false
}
}
解:
// Show eye icon to show the password will be triggered once there is a change in data in the UITextField
func textFieldDidChange() {
if passwordField.text != "" {
let leftImageView = UIImageView()
leftImageView.image = passwordImage
leftImageView.contentMode = .scaleAspectFit
leftImageView.tag = 1
let leftView = UIView()
leftView.addSubview(leftImageView)
leftView.frame = CGRect(x: 0, y: 0, width: 40, height: 30)
leftImageView.frame = CGRect(x: 10, y: 10, width: 20, height: 12)
passwordField.rightViewMode = .whileEditing
passwordField.rightView = leftView
let tapgesture = UITapGestureRecognizer(target: self, action: #selector(ViewController.togglePasswordSecurity))
leftImageView.isUserInteractionEnabled = true
leftImageView.addGestureRecognizer(tapgesture)
}else{
passwordField.rightViewMode = .never
}
}
func togglePasswordSecurity() {
if passwordField.isSecureTextEntry == false {
passwordImage = UIImage(named: "view_password")
textFieldDidChange()
// change left UIImage to hide_password
passwordField.isSecureTextEntry = true
}else{
passwordImage = UIImage(named: "heart")
self.textFieldDidChange()
// change left UIImage to view_password
passwordField.isSecureTextEntry = false
}
}
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