我正在寻找从Firebase存储中检索图像的开始结束代码示例,只是为了显示图像.作为图像视图或表格.我看过这里的帖子和各种教程.总觉得有些东西被遗漏了.如果我能看到整个画面,我将能够更好地掌握这一点.
附加的代码是我目前尝试将photo1从本地更改为从Firebase存储中提取.
import UIKit import Firebase import FirebaseAuth import FirebaseStorage import FirebaseDatabase class MainMenuTableViewController: UITableViewController { var mainMenu = [Menu]() var photo1 = UIImage() override func viewDidLoad() { super.viewDidLoad() loadMenu() } func loadMenu() { let storage = FIRStorage.storage() // Create a storage reference from the URL let storageRef = storage.referenceForURL("https://firebasestorage.googleapis.com/v0/b/medicalpatientapp-7fd45.appspot.com/o/iconimages%2Ffile-medical-icons.png?alt=media&token=c95b9c51-67ae-4e93-b63c-62091015a9ff") // Download the data,assuming a max size of 1MB (you can change this as necessary) storageRef.dataWithMaxSize(1 * 1024 * 1024) { (data,error) -> Void in // Create a UIImage,add it to the array let pic = UIImage(data: data!) self.photo1 = pic! } //let photo1 = UIImage(named: "iconimages-file-medical-icons")! let menu1 = Menu(name: "My Notes",photo: photo1)! let photo2 = UIImage(named: "iconimages-file-medical-icons")! let menu2 = Menu(name: "View Patients",photo: photo2)! let photo3 = UIImage(named: "iconimages-add-medical-icons")! let menu3 = Menu(name: "Add Persons",photo: photo3)! mainMenu += [menu1,menu2,menu3] } override func didReceiveMemoryWarning() { super.didReceiveMemoryWarning() // Dispose of any resources that can be recreated. } // MARK: - Table view data source override func numberOfSectionsInTableView(tableView: UITableView) -> Int { // #warning Incomplete implementation,return the number of sections return 1 } override func tableView(tableView: UITableView,numberOfRowsInSection section: Int) -> Int { // #warning Incomplete implementation,return the number of rows return mainMenu.count } override func tableView(tableView: UITableView,cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell { // Configure the cell... let cellIdentifier = "MenuTableViewCell" let cell = tableView.dequeueReusableCellWithIdentifier(cellIdentifier,forIndexPath: indexPath) as! MainMenuTableViewCell // Fetches the appropriate meal for the data source layout. let menu = mainMenu[indexPath.row] cell.menuLabel.text = menu.name cell.menuImage.image = menu.photo return cell }
}
我们强烈建议您同时使用Firebase存储和Firebase实时数据库来完成此任务.这是一个完整的例子:
原文链接:https://www.f2er.com/swift/320031.html共享:
// Firebase services var database: FIRDatabase! var storage: FIRStorage! ... // Initialize Database,Auth,Storage database = FIRDatabase.database() storage = FIRStorage.storage() ... // Initialize an array for your pictures var picArray: [UIImage]()
上传:
let fileData = NSData() // get data... let storageRef = storage.reference().child("myFiles/myFile") storageRef.putData(fileData).observeStatus(.Success) { (snapshot) in // When the image has successfully uploaded,we get it's download URL let downloadURL = snapshot.Metadata?.downloadURL()?.absoluteString // Write the download URL to the Realtime Database let dbRef = database.reference().child("myFiles/myFile") dbRef.setValue(downloadURL) }
下载:
let dbRef = database.reference().child("myFiles") dbRef.observeEventType(.ChildAdded,withBlock: { (snapshot) in // Get download URL from snapshot let downloadURL = snapshot.value() as! String // Create a storage reference from the URL let storageRef = storage.referenceFromURL(downloadURL) // Download the data,assuming a max size of 1MB (you can change this as necessary) storageRef.dataWithMaxSize(1 * 1024 * 1024) { (data,error) -> Void in // Create a UIImage,add it to the array let pic = UIImage(data: data) picArray.append(pic) }) })
有关更多信息,请参阅Zero to App: Develop with Firebase,它是associated source code,以获取有关如何执行此操作的实际示例.