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October 11, 2017 08:32
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TextViewにカーソルを前後や行頭行末に移動させるToolbarを追加
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| class ViewController: UIViewController { | |
| @IBOutlet weak var TextView: UITextView! | |
| override func viewDidLoad() { | |
| super.viewDidLoad() | |
| // Do any additional setup after loading the view, typically from a nib. | |
| let toolbar = UIToolbar() | |
| let start = UIBarButtonItem(title: "|<", style: .plain, target: self, action: #selector(self.start)) | |
| let back = UIBarButtonItem(title: "<", style: .plain, target: self, action: #selector(self.back)) | |
| let forward = UIBarButtonItem(title: ">", style: .plain, target: self, action: #selector(self.forward)) | |
| let end = UIBarButtonItem(title: ">|", style: .plain, target: self, action: #selector(self.end)) | |
| toolbar.items = [start, back, forward, end] | |
| toolbar.sizeToFit() | |
| TextView.inputAccessoryView = toolbar | |
| } | |
| @objc func start() { | |
| let cp = TextView.selectedTextRange! | |
| if cp.start == TextView.beginningOfDocument { | |
| return | |
| } | |
| let text = TextView.text! as NSString | |
| let lineRange = text.lineRange(for: NSMakeRange(TextView.selectedRange.location, 0)) | |
| let rangeStart = TextView.position(from: TextView.beginningOfDocument, offset: lineRange.location)! | |
| TextView.selectedTextRange = TextView.textRange(from: rangeStart, to: rangeStart) | |
| } | |
| @objc func back() { | |
| let cp = TextView.selectedTextRange! | |
| if cp.start == TextView.beginningOfDocument { | |
| return | |
| } | |
| let position = TextView.position(from: cp.start, offset: -1) | |
| TextView.selectedTextRange = TextView.textRange(from: position!, to: position!) | |
| } | |
| @objc func end() { | |
| let cp = TextView.selectedTextRange! | |
| if cp.end == TextView.endOfDocument { | |
| return | |
| } | |
| let text = "\(TextView.text!)\n" as NSString | |
| let linerange = text.lineRange(for: NSMakeRange(TextView.selectedRange.location, 0)) | |
| let rangeStart = TextView.position(from: TextView.beginningOfDocument, offset: linerange.location)! | |
| let rangeEnd = TextView.position(from: rangeStart, offset: linerange.length - 1)! | |
| TextView.selectedTextRange = TextView.textRange(from: rangeEnd, to: rangeEnd) | |
| } | |
| @objc func forward() { | |
| let cp = TextView.selectedTextRange! | |
| if cp.end == TextView.endOfDocument { | |
| return | |
| } | |
| let position = TextView.position(from: cp.start, offset: 1) | |
| TextView.selectedTextRange = TextView.textRange(from: position!, to: position!) | |
| } | |
| } |
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