質問編集履歴
5
解決方法の記載
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### 2/17 解決
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```ここに言語を入力
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import UIKit
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class ViewController: UIViewController {
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@IBOutlet weak var label: UILabel!
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override func viewDidLoad() {
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super.viewDidLoad()
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// Do any additional setup after loading the view, typically from a nib.
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}
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override func viewDidAppear(_ animated: Bool) {
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super.viewDidAppear(animated)
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if let _ = UserDefaults.standard.object(forKey: "text") as? String {
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label.text = (UserDefaults.standard.object(forKey: "text") as! String)
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}
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}
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}
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```
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```ここに言語を入力
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import UIKit
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class SecondViewController: UIViewController {
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@IBOutlet weak var textField: UITextField!
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override func viewDidLoad() {
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super.viewDidLoad()
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// textFieldの入力方法をナンバーパッドに設定
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textField.keyboardType = UIKeyboardType.numberPad
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}
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@IBAction func okButton(_ sender: Any) {
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UserDefaults.standard.set(textField.text, forKey: "text")
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}
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}
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```
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### 補足情報(FW/ツールのバージョンなど)
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情報の追加
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```
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### 追記 2/16 ②
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```ここに言語を入力
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import UIKit
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class ViewController: UIViewController {
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var date:String = ""
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var dateBox = [String]()
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@IBOutlet weak var label: UILabel!
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override func viewDidLoad() {
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super.viewDidLoad()
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}
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// ViewControllerを表示する度に処理
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override func viewWillAppear(_ animated: Bool) {
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dateBox.append(date)
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UserDefaults.standard.set(dateBox, forKey: "DateA")
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let defaults = UserDefaults.standard
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let set = defaults.string(forKey: "DateA")
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label.text = set
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}
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}
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```
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```ここに言語を入力
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import UIKit
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class SecondViewController: UIViewController {
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@IBOutlet weak var textField: UITextField!
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override func viewDidLoad() {
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super.viewDidLoad()
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textField.keyboardType = UIKeyboardType.numberPad
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}
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override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
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if segue.identifier == "aSegue" {
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let ViewCon = segue.destination as! ViewController
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ViewCon.date = textField.text // Value of optional type 'String?' must be unwrapped to a value of type 'String'
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}
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}
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}
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```
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### 補足情報(FW/ツールのバージョンなど)
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3
情報の追加
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test
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@@ -168,6 +168,132 @@
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### 追記 2/16
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色々調べているとoverride func prepareとoverride func viewWillAppear(_ animated: Bool)
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が使えるのではと思い以下のコードを書きましたが、エラーが起きている状況です。
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```ここに言語を入力
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import UIKit
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class ViewController: UIViewController {
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var date:String?
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var dateBox = [String]()
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@IBOutlet weak var label: UILabel!
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override func viewDidLoad() {
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super.viewDidLoad()
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}
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// ViewControllerを表示する度に処理
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override func viewWillAppear(_ animated: Bool) {
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dateBox.append(date!) //Thread 1: Fatal error: Unexpectedly found nil while unwrapping an Optional value
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UserDefaults.standard.set(dateBox, forKey: "DateA")
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let defaults = UserDefaults.standard
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let set = defaults.string(forKey: "DateA")
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label.text = set
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}
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}
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```
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```ここに言語を入力
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import UIKit
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class SecondViewController: UIViewController {
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@IBOutlet weak var textField: UITextField!
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override func viewDidLoad() {
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super.viewDidLoad()
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textField.keyboardType = UIKeyboardType.numberPad
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}
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override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
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if segue.identifier == "aSegue" {
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let ViewCon = segue.destination as! ViewController
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ViewCon.date = textField.text
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}
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}
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}
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```
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### 補足情報(FW/ツールのバージョンなど)
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299
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Swift4 Xcode10
|
2
情報の追加
test
CHANGED
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test
CHANGED
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override func prepareで解決しないかも調べている状況です。
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### 該当のソースコード
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-
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+
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```ここに言語名を入力
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@@ -124,6 +130,36 @@
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### 試したこと
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UserDefaultsを調べていて、色々試している状況です。
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```ここに言語を入力
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import UIKit
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class ViewController: UIViewController {
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@IBOutlet weak var label: UILabel!
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override func viewDidLoad() {
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super.viewDidLoad()
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label.text = date //Cannot assign value of type '[String]' to type 'String?'
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}
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}
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```
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UserDefautlsの基本やLabelに表示させる方法を調べているのですが、まだ実装出来ていません。
|
1
書式の改善
test
CHANGED
File without changes
|
test
CHANGED
@@ -20,7 +20,7 @@
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20
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21
21
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### 該当のソースコード
|
22
22
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23
|
-
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+
今現在分かる限りで書けているコードです。
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|
```ここに言語名を入力
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