Forked from nicklockwood/UITextField+TrailingPlaceholder.swift
Created
January 23, 2022 14:37
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| import UIKit | |
| extension UITextField { | |
| /// Add a trailing placeholder label that tracks the text as it changes | |
| func addTrailingPlaceholder(_ placeholder: String) { | |
| let label = UILabel() | |
| label.text = placeholder | |
| label.alpha = 0.3 | |
| label.isHidden = true | |
| addSubview(label) | |
| addAction(UIAction { [weak self] _ in | |
| guard let self = self else { | |
| return | |
| } | |
| label.font = self.font | |
| label.frame = self.textRect(forBounds: self.bounds) | |
| if self.window?.screen.scale == 3 { | |
| // Fix for slight baseline misalignment on @3x displays | |
| label.frame.origin.y -= 0.333 | |
| } | |
| let size = (self.text ?? "").size(withAttributes: self.defaultTextAttributes) | |
| label.frame.origin.x = size.width | |
| label.isHidden = !self.hasText | |
| }, for: .editingChanged) | |
| } | |
| } |
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