質問編集履歴
3
追加
test
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test
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@@ -68,7 +68,7 @@
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//ここでThread 1: Fatal error: Unexpectedly found nil while implicitly unwrapping an Optional valueのエラー
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71
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-
musicPostViewControllrt.questionPostLabel = questionLabel.text as! String
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musicPostViewControllrt.questionPostLabel.text = questionLabel.text as! String
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}
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@@ -79,3 +79,129 @@
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}
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```
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解決
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遷移先(MusicPostViewController)のviewdidloadにquestionPostLabel.text = questionlabelと表示しnilが入らないようにして、そのquestionlabelに遷移元で表示したquestionable(=questionLabel.text)を代入することで成功しました！
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86
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回答者の皆様本当にありがとうございました！！
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遷移元
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```ここに言語を入力
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class MusicViewController: UIViewController ,IndicatorInfoProvider {
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//ここがボタンのタイトルに利用されます
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var itemInfo: IndicatorInfo = "音楽"
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var questionlabel:String?
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@IBOutlet weak var questionLabel: UILabel!
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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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questionLabel.text = "オススメの曲は？"
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}
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//必須
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func indicatorInfo(for pagerTabStripController: PagerTabStripViewController) -> IndicatorInfo {
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return itemInfo
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}
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@IBAction func toMusicpost() {
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//questionlabelにquestionLabel.text代入
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questionlabel = questionLabel.text
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performSegue(withIdentifier: "toMusicPost", sender: nil)
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}
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override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
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if segue.identifier == "toMusicPost"{
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let musicPostViewControllr = segue.destination as! MusicPostViewController
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musicPostViewControllr.questionlabel = questionlabel
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}
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}
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}
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```
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遷移先
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```ここに言語を入力
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class MusicPostViewController: UIViewController,UINavigationControllerDelegate, UIImagePickerControllerDelegate, UITextViewDelegate {
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let placeholderImage = UIImage(named: "photo-placeholder")
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let musicViewController = MusicViewController()
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var resizedImage: UIImage!
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//questionlabe保持
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var questionlabel:String?
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@IBOutlet weak var questionPostLabel: UILabel!
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@IBOutlet var postImageView: UIImageView!
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@IBOutlet var postTextView: UITextView!
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@IBOutlet var postButton: UIBarButtonItem!
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override func viewDidLoad() {
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super.viewDidLoad()
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postTextView.delegate = self
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//初期値にquestionlabelが入る
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questionPostLabel.text = questionlabel
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}
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```
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2
編集
test
CHANGED
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File without changes
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test
CHANGED
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@@ -54,7 +54,7 @@
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54
54
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55
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56
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57
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performSegue(withIdentifier: "toPost", sender: nil)
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performSegue(withIdentifier: "toMusicPost", sender: nil)
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1
編集
test
CHANGED
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File without changes
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test
CHANGED
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@@ -4,7 +4,15 @@
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4
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5
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6
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7
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segueで渡そうと思い@IBAction func toMusicpost()で以下のように書いたのですが、Thread 1: Fatal error: Unexpectedly found nil while implicitly unwrapping an Optional valueというエラーが出てしまいます。
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8
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9
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これは予期せぬエラーが見つかったということなのでas! Stringと書いてみましたが変化なしでした。。
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接続されていることも確認しましたが、どういった対処が必要でしょうか。
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7
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何かヒント頂けると幸いです。
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@@ -58,9 +66,9 @@
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58
66
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59
67
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let musicPostViewControllrt = segue.destination as! MusicPostViewController
|
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60
68
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61
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-
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69
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+
//ここでThread 1: Fatal error: Unexpectedly found nil while implicitly unwrapping an Optional valueのエラー
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62
70
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63
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-
musicPostViewControllrt.questionPostLabel = questionLabel.text as!
|
|
71
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+
musicPostViewControllrt.questionPostLabel = questionLabel.text as! String
|
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64
72
|
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65
73
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}
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66
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