我想在不同的情况下对一个按钮实现不同的目标。
如果它是当前用户自己的个人资料，则该按钮应添加目标“转到设置”。如果是其他用户，我想添加关注/取消关注操作。
检查所有参数后，我的代码应该可以工作了。但它不起作用。 我添加了一些打印品，但按钮不可点击。
func setupUserInformation(user: UserModel) {
usernameLabel.text = user.username
if user.uid == UserApi.shared.CURRENT_USER_ID {
editButton.setTitle("Einstellungen", for: .normal)
editButton.addTarget(self, action: #selector(goToSettings), for: .touchUpInside)
} else {
if user.isFollowing! == true {
setupUnfollowButton()
} else {
setupFollowButton()
}
}
}
@objc func goToSettings() {
delegate?.goToSettingVC()
}
func setupFollowButton() {
editButton.layer.borderWidth = 1
editButton.layer.borderColor = UIColor.lightGray.cgColor
editButton.layer.cornerRadius = 5
editButton.clipsToBounds = true
editButton.setTitleColor(UIColor.white, for: .normal)
editButton.backgroundColor = UIColor(red: 1 / 255, green: 84 / 255, blue: 147 / 255, alpha: 1.0)
editButton.setTitle("Folgen", for: UIControl.State.normal)
editButton.addTarget(self, action: #selector(followAction), for: .touchUpInside)
}
@objc func followAction() {
print("Button wurde gedrückt")
if user?.isFollowing == false {
FollowApi.shared.followAction(withUser: user!.uid!)
setupUnfollowButton()
user?.isFollowing = true
}
}
func setupUnfollowButton() {
editButton.layer.borderWidth = 1
editButton.layer.borderColor = UIColor.lightGray.cgColor
editButton.layer.cornerRadius = 5
editButton.clipsToBounds = true
editButton.setTitleColor(UIColor.black, for: .normal)
editButton.backgroundColor = UIColor.white
editButton.setTitle("Entfolgen", for: UIControl.State.normal)
editButton.addTarget(self, action: #selector(unFollowAction), for: .touchUpInside)
}
@objc func unFollowAction() {
print("Button wurde gedrückt")
if user?.isFollowing == true {
FollowApi.shared.unfollowAction(withUser: user!.uid!)
setupFollowButton()
user?.isFollowing = false
}
}
非常感谢您的帮助!
更新
在下面的答案中进行了一些更改。但是仍然不会执行添加目标。
var user: UserModel? {
didSet {
guard let _user = user else { return }
setupUserInformation(user: _user)
}
}
func setupUserInformation(user: UserModel) {
editButton.addTarget(self, action: #selector(didTapEditButton), for: .touchUpInside)
if user.uid == UserApi.shared.CURRENT_USER_ID {
editButton.setTitle("Einstellungen", for: .normal)
}else {
if user.isFollowing! == true {
setupUnfollowButton()
} else {
setupFollowButton()
}
}
}
@objc func didTapEditButton() {
//Add IF conditions according to what your button should do in different cases here.
if user!.uid == UserApi.shared.CURRENT_USER_ID {
editButton.setTitle("Einstellungen", for: .normal)
goToSettings()
}else {
if user!.isFollowing! == true {
unFollowAction()
} else {
followAction()
}
}
}
@objc func goToSettings() {
delegate?.goToSettingVC()
}
func setupFollowButton() {
editButton.layer.borderWidth = 1
editButton.layer.borderColor = UIColor.lightGray.cgColor
editButton.layer.cornerRadius = 5
editButton.clipsToBounds = true
editButton.setTitleColor(UIColor.white, for: .normal)
editButton.backgroundColor = UIColor(red: 1 / 255, green: 84 / 255, blue: 147 / 255, alpha: 1.0)
editButton.setTitle("Folgen", for: UIControl.State.normal)
}
func followAction() {
print("Button wurde gedrückt")
if user?.isFollowing == false {
FollowApi.shared.followAction(withUser: user!.uid!)
setupUnfollowButton()
user?.isFollowing = true
}
}
func setupUnfollowButton() {
editButton.layer.borderWidth = 1
editButton.layer.borderColor = UIColor.lightGray.cgColor
editButton.layer.cornerRadius = 5
editButton.clipsToBounds = true
editButton.setTitleColor(UIColor.black, for: .normal)
editButton.backgroundColor = UIColor.white
editButton.setTitle("Entfolgen", for: UIControl.State.normal)
}
func unFollowAction() {
print("Button wurde gedrückt")
if user?.isFollowing == true {
FollowApi.shared.unfollowAction(withUser: user!.uid!)
setupFollowButton()
user?.isFollowing = false
}
}
最佳答案
马特是对的!!你的方法在这里是完全错误的。请尝试修改您的方法。
你的方法应该是这样的:
override func viewDidLoad() {
super.viewDidLoad()
//Set Target to your button only once.
editButton.addTarget(self, action: #selector(didTapEditButton), for: .touchUpInside)
}
@objc func didTapEditButton() {
//Add IF conditions according to what your button should do in different cases here.
if user.uid == UserApi.shared.CURRENT_USER_ID {
goToSettings()
}else {
if user.isFollowing! == true {
setupUnfollowButton()
} else {
setupFollowButton()
}
}
}
func setupFollowButton() {
//Make the check to see what state your button is currently in by checking if the title of the button is "Follow" or "Unfollow"
if editButton.titleLabel?.text == "Unfollow"{
editButton.layer.borderWidth = 1
editButton.layer.borderColor = UIColor.lightGray.cgColor
editButton.layer.cornerRadius = 5
editButton.clipsToBounds = true
editButton.setTitleColor(UIColor.white, for: .normal)
editButton.backgroundColor = UIColor(red: 1 / 255, green: 84 / 255, blue: 147 / 255, alpha: 1.0)
editButton.setTitle("Follow", for: UIControl.State.normal)
followAction()
}
}
func setupUnfollowButton() {
//Do the same here for the other state.
if editButton.titleLabel?.text == "Follow"{
editButton.layer.borderWidth = 1
editButton.layer.borderColor = UIColor.lightGray.cgColor
editButton.layer.cornerRadius = 5
editButton.clipsToBounds = true
editButton.setTitleColor(UIColor.black, for: .normal)
editButton.backgroundColor = UIColor.white
editButton.setTitle("Unfollow", for: UIControl.State.normal)
unFollowAction()
}
}
func followAction() {
print("Button wurde gedrückt")
if user?.isFollowing == false {
FollowApi.shared.followAction(withUser: user!.uid!)
setupUnfollowButton()
user?.isFollowing = true
}
}
func unFollowAction() {
print("Button wurde gedrückt")
if user?.isFollowing == true {
FollowApi.shared.unfollowAction(withUser: user!.uid!)
setupFollowButton()
user?.isFollowing = false
}
}
关于swift - 将目标添加到 Swift 中的按钮，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/53546737/