質問編集履歴
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```Swift
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ここからdecodeData
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/*６０行ほどの画像をエンコードした文字列*/
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ここからdecodedImagge
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Optional(<UIImage:
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Optional(<UIImage: 0x628000085370>, {1158, 1218})
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Optional(nil)
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Could not cast value of type 'Swift.Optional<Any>' (
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Could not cast value of type 'Swift.Optional<Any>' (0x7fb8c0b17960) to 'Swift.String' (0x112448ae0).
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(lldb)
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```
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1
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Firebaseに保存されたエンコードされた画像データをSwiftでデコードして表示させようとしたらエラーの表示がないのに関わらずエラーが起きてアプリがクラッシュしてしまいます。
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```
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```Swift3
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import UIKit
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-
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import Firebase
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@IBOutlet weak var dataImageView: UIImageView!
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class ViewController: UIViewController,UIImagePickerControllerDelegate,UINavigationControllerDelegate,UITableViewDelegate,UITableViewDataSource {
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var items = [NSDictionary]()
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let refreshControl = UIRefreshControl()
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var passImage:UIImage = UIImage()
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var nowtableViewImage = UIImage()
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var nowtableViewUserName = String()
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var nowtableViewUserImage = UIImage()
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@IBOutlet var tableView: UITableView!
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override func viewDidLoad() {
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super.viewDidLoad()
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if UserDefaults.standard.object(forKey: "check") != nil{
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}else{
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let loginViewController = self.storyboard?.instantiateViewController(withIdentifier: "login")
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self.present(loginViewController!, animated: true, completion: nil)
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}
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tableView.delegate = self
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tableView.dataSource = self
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refreshControl.attributedTitle = NSAttributedString(string: "引っ張って更新")
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refreshControl.addTarget(self, action:#selector(refresh), for:UIControlEvents.valueChanged)
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tableView.addSubview(refreshControl)
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items = [NSDictionary]()
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loadAllData()
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tableView.reloadData()
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}
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func refresh(){
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//データを読んでくる
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//tableviewリロード
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items = [NSDictionary]()
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loadAllData()
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tableView.reloadData()
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refreshControl.endRefreshing()
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}
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//TableViewのデリゲートメソッド
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func numberOfSections(in tableView: UITableView) -> Int {
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return 1
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}
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//セルの数
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func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
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return items.count
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}
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func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
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let cell = tableView.dequeueReusableCell(withIdentifier: "Cell", for: indexPath)
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cell.selectionStyle = UITableViewCellSelectionStyle.none
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let dict = items[(indexPath as NSIndexPath).row]
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85
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//プロフィール
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let profileImageView = cell.viewWithTag(1) as! UIImageView
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//デコードしたデータをUIImage型へ変換してimageviewへ反映する
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let decodeData = (base64Encoded:dict["profileImage"])
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let decodedData = NSData(base64Encoded: decodeData as! String, options: NSData.Base64DecodingOptions.ignoreUnknownCharacters)
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let decodedImage = UIImage(data:decodedData! as Data)
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profileImageView.layer.cornerRadius = 8.0
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profileImageView.clipsToBounds = true
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profileImageView.image = decodedImage
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//ユーザー名
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let userNameLabel = cell.viewWithTag(2) as! UILabel
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userNameLabel.text = dict["username"] as? String
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105
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//投稿画像
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let postedImageView = cell.viewWithTag(3) as! UIImageView
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//abv
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let decodeData2 = (base64Encoded:dict["postImage"])
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let decodedData2 = NSData(base64Encoded: decodeData2 as! String, options: NSData.Base64DecodingOptions.ignoreUnknownCharacters)
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let decodedImage2 = UIImage(data:decodedData2! as Data)
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postedImageView.image = decodedImage2
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112
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+
|
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113
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+
//コメント
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114
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+
let commentTextView = cell.viewWithTag(4) as! UITextView
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commentTextView.text = dict["comment"] as? String
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117
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119
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return cell
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}
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122
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+
//データベースからデータをとってきて、配列の中に入れた
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+
func loadAllData(){
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|
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125
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126
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+
// https://happystagram1.firebaseio.com/
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129
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UIApplication.shared.isNetworkActivityIndicatorVisible = true
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|
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131
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+
let firebase = FIRDatabase.database().reference(fromURL: "https://instgram-ce25d.firebaseio.com/").child("Posts")
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132
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+
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133
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+
|
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134
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+
firebase.queryLimited(toLast: 10).observe(.value) { (snapshot,error) in
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|
135
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+
var tempItems = [NSDictionary]()
|
|
136
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+
for item in(snapshot.children){
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137
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+
|
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138
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+
let child = item as! FIRDataSnapshot
|
|
139
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+
let dict = child.value
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|
140
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+
tempItems.append(dict as! NSDictionary)
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141
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+
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142
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+
|
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143
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+
}
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144
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|
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145
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+
self.items = tempItems
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|
146
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+
self.items = self.items.reversed()
|
|
147
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+
self.tableView.reloadData()
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|
148
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+
|
|
149
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+
|
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150
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+
UIApplication.shared.isNetworkActivityIndicatorVisible = false
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|
151
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+
|
|
152
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+
}
|
|
153
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+
}
|
|
154
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+
|
|
155
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+
|
|
156
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+
//
|
|
157
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+
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
|
|
158
|
+
|
|
159
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+
|
|
160
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+
let dict = items[(indexPath as NSIndexPath).row]
|
|
161
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+
|
|
162
|
+
//エンコードして取り出す
|
|
163
|
+
let decodeData = (base64Encoded:dict["profileImage"])
|
|
164
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+
|
|
165
|
+
let decodedData = NSData(base64Encoded:decodeData as! String , options: NSData.Base64DecodingOptions.ignoreUnknownCharacters)
|
|
166
|
+
let decodedImage = UIImage(data:decodedData! as Data)
|
|
167
|
+
//abv
|
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168
|
+
nowtableViewUserImage = decodedImage!
|
|
169
|
+
|
|
170
|
+
nowtableViewUserName = (dict["username"] as? String)!
|
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171
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+
|
|
172
|
+
//エンコードして取り出す
|
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173
|
+
let decodeData2 = (base64Encoded:dict["postImage"])
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174
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+
|
|
175
|
+
let decodedData2 = NSData(base64Encoded:decodeData2 as! String , options: NSData.Base64DecodingOptions.ignoreUnknownCharacters)
|
|
176
|
+
let decodedImage2 = UIImage(data:decodedData2! as Data)
|
|
177
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+
nowtableViewImage = decodedImage2!
|
|
178
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+
|
|
179
|
+
performSegue(withIdentifier: "sns", sender: nil)
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180
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+
|
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181
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+
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182
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+
|
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183
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+
//postImage
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184
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+
|
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185
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+
}
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|
186
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+
|
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187
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+
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188
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+
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189
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+
func openCamera(){
|
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190
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+
|
|
191
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+
|
|
192
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+
let sourceType:UIImagePickerControllerSourceType = UIImagePickerControllerSourceType.camera
|
|
193
|
+
// カメラが利用可能かチェック
|
|
194
|
+
if UIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.camera){
|
|
195
|
+
// インスタンスの作成
|
|
196
|
+
let cameraPicker = UIImagePickerController()
|
|
197
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+
cameraPicker.sourceType = sourceType
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198
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+
cameraPicker.delegate = self
|
|
199
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+
self.present(cameraPicker, animated: true, completion: nil)
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|
200
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+
|
|
201
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+
}
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|
202
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+
|
|
203
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+
}
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204
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+
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205
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+
func openPhoto(){
|
|
206
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+
|
|
207
|
+
|
|
208
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+
let sourceType:UIImagePickerControllerSourceType = UIImagePickerControllerSourceType.photoLibrary
|
|
209
|
+
// カメラが利用可能かチェック
|
|
210
|
+
if UIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.photoLibrary){
|
|
211
|
+
// インスタンスの作成
|
|
212
|
+
let cameraPicker = UIImagePickerController()
|
|
213
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+
cameraPicker.sourceType = sourceType
|
|
214
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+
cameraPicker.delegate = self
|
|
215
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+
self.present(cameraPicker, animated: true, completion: nil)
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216
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+
|
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217
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+
}
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218
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+
|
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219
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+
|
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220
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+
}
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221
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+
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222
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+
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223
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+
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224
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+
@IBAction func showCamera(_ sender: AnyObject) {
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225
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+
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226
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+
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227
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+
openCamera()
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228
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+
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229
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+
}
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|
230
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+
|
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231
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+
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232
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+
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233
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+
@IBAction func showPhotos(_ sender: AnyObject) {
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234
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+
|
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235
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+
openPhoto()
|
|
236
|
+
}
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|
237
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+
|
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238
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+
func imagePickerController(_ imagePicker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : AnyObject]) {
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239
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+
|
|
240
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+
if let pickedImage = info[UIImagePickerControllerOriginalImage] as? UIImage {
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241
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+
|
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242
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+
|
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243
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passImage = pickedImage
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244
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performSegue(withIdentifier:"next",sender:nil)
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|
245
|
+
|
|
246
|
+
}
|
|
247
|
+
|
|
248
|
+
//カメラ画面(アルバム画面)を閉じる処理
|
|
249
|
+
imagePicker.dismiss(animated: true, completion: nil)
|
|
250
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+
|
|
251
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+
}
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|
252
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+
|
|
253
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+
|
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254
|
+
override func prepare(for segue:UIStoryboardSegue,sender:Any?){
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|
255
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+
|
|
256
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+
|
|
257
|
+
if(segue.identifier == "next"){
|
|
258
|
+
|
|
259
|
+
|
|
260
|
+
let editVC:EditViewController = segue.destination as! EditViewController
|
|
261
|
+
editVC.willEditImage = passImage
|
|
262
|
+
}
|
|
263
|
+
|
|
264
|
+
if(segue.identifier == "sns"){
|
|
265
|
+
|
|
266
|
+
let snsVC:SnsViewController = segue.destination as! SnsViewController
|
|
267
|
+
snsVC.detailImage = nowtableViewImage
|
|
268
|
+
snsVC.detailProfileImage = nowtableViewUserImage
|
|
269
|
+
snsVC.detailUserName = nowtableViewUserName
|
|
270
|
+
|
|
271
|
+
}
|
|
272
|
+
|
|
273
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+
}
|
|
274
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+
|
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275
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+
|
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276
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+
|
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277
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+
|
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278
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+
override func didReceiveMemoryWarning() {
|
|
279
|
+
super.didReceiveMemoryWarning()
|
|
280
|
+
|
|
281
|
+
|
|
282
|
+
}
|
|
283
|
+
|
|
284
|
+
|
|
285
|
+
}
|
|
286
|
+
|
|
16
287
|
```
|
|
288
|
+
|
|
289
|
+
|
|
17
290
|
出力されるエラー
|
|
18
291
|
```Swift
|
|
19
292
|
Optional(<UIImage: 0x600000098790>, {1158, 1218})
|
3
追記
title
CHANGED
|
File without changes
|
body
CHANGED
|
@@ -11,6 +11,7 @@
|
|
|
11
11
|
print("デコードされたイメージ")
|
|
12
12
|
print(decodedData)
|
|
13
13
|
let decodedImage = UIImage(data:decodedData! as Data)
|
|
14
|
+
print(decodeImage)
|
|
14
15
|
cell.dataImageView.image = decodedImage
|
|
15
16
|
```
|
|
16
17
|
出力されるエラー
|
2
エラーに関して記述
title
CHANGED
|
File without changes
|
body
CHANGED
|
@@ -1,11 +1,24 @@
|
|
|
1
1
|
Firebaseに保存されたエンコードされた画像データをSwiftでデコードして表示させようとしたらエラーの表示がないのに関わらずエラーが起きてアプリがクラッシュしてしまいます。
|
|
2
2
|
|
|
3
3
|
``` Swift3.1
|
|
4
|
+
//imageViewの接続
|
|
5
|
+
@IBOutlet weak var dataImageView: UIImageView!
|
|
6
|
+
|
|
4
7
|
//デコードしたデータをUIImage型へ変換してimageviewへ反映する
|
|
5
8
|
let decodeData = (base64Encoded:dict["image"])
|
|
9
|
+
print(decodeData)
|
|
6
10
|
let decodedData = NSData(base64Encoded: decodeData as! String, options: NSData.Base64DecodingOptions.ignoreUnknownCharacters)
|
|
11
|
+
print("デコードされたイメージ")
|
|
12
|
+
print(decodedData)
|
|
7
13
|
let decodedImage = UIImage(data:decodedData! as Data)
|
|
8
14
|
cell.dataImageView.image = decodedImage
|
|
9
15
|
```
|
|
16
|
+
出力されるエラー
|
|
17
|
+
```Swift
|
|
18
|
+
Optional(<UIImage: 0x600000098790>, {1158, 1218})
|
|
19
|
+
decodeData
|
|
20
|
+
Could not cast value of type 'Swift.Optional<Any>' (0x7fa76fd14200) to 'Swift.String' (0x10677fae0).
|
|
21
|
+
```
|
|
10
22
|
|
|
23
|
+
|
|
11
24
|
Xcode8.3/Swift3で行なっていますが、解決方法にめどがつきません。どなたかご教示をお願いします。
|
1
誤字
title
CHANGED
|
File without changes
|
body
CHANGED
|
@@ -1,4 +1,4 @@
|
|
|
1
|
-
Firebaseに保存されたエンコードされた画像データをSwiftでデコードして表示させようとしたらエラーの表示が
|
|
1
|
+
Firebaseに保存されたエンコードされた画像データをSwiftでデコードして表示させようとしたらエラーの表示がないのに関わらずエラーが起きてアプリがクラッシュしてしまいます。
|
|
2
2
|
|
|
3
3
|
``` Swift3.1
|
|
4
4
|
//デコードしたデータをUIImage型へ変換してimageviewへ反映する
|