我有 2 个 View :ViewOne 和 ViewTwo。
ViewOne 内部有 4 个 imageView 导出和一个 postButton。用户按下 postButton 后,所有图像都将发送到 Firebase Storage,然后从那里检索它们并在 ViewTwo 中显示。
在 ViewTwo 内部还有 4 个 ImageView 导出,用于接收从 ViewOne 发布到 Firebase Storage 的图像。
使用 Firebase 存储,我无论如何都看不到将多个图像存储在同一路径下的存储中。我了解如何将每个帖子存储 1 个图像到存储然后访问它,但不是多个图像。
如何将多个图像作为数组发布到存储中以保存在 1 个路径(ViewOne)下?然后我如何访问所有这些图像(ViewTwo)?
顺便说一句,我通过 Youtube 从 Brian Voong 那里得到了很棒的 viewTwo 代码(自定义函数):https://youtu.be/b1vrjt7Nvb0
这是图像 url 字符串将进入的类。我没有费心去初始化。
class ImageData: NSObject{
var imageOneURL: String?
var imageTwoURL: String?
var imageThreeURL: String?
var imageFourURL: String?
}
这是 imageViewOne。我没有添加 ImagePicker 委托(delegate),因为它看起来没有必要,但我怎么知道如何使用它们。
import Firebase
ImageViewOne:UIViewController, UIImagePickerControllerDelegate, UINavigationControllerDelegate{
@IBOutlet weak var imageViewONE: UIImageView!
@IBOutlet weak var imageViewTWO: UIImageView!
@IBOutlet weak var imageViewTHREE: UIImageView!
@IBOutlet weak var imageViewFOUR: UIImageView!
var images = [ImageData]()
@IBAction func postButton(sender: UIButton){
//Unigue string for the images to be loaded under their own path
let uniqueImageIDPath = NSUUID().UUIDString
//Firebase Storage Ref
let storageRef = FIRStorage.storage().reference().child("images/\(uniqueImageIDPath)")
//Firebase Image to be stored. This is where I need help to store all the images at once.
if let myImages = UIImageJPEGRepresentation(self.imageViewONE.image!, 0.1){
storageRef.putData(myImages, metadata: nil, completion: {
(metadata, error) in
if error != nil{
print(error?.localizedDescription)
}
if let myImageString = metadata?.downloadURL()?.absoluteString{
let imageData = ImageData()
imageData.imageOne = myImageString
self.images.apped(imageData)
let values = ["imageOneURL": imageData.imageOne, "imageTwo":"?", "imageThree":"?", "imageFour":"?"]
let ref = FIRDatabase.database().reference().child("users")
ref.updateChildValues(values, withCompletionBlock: {
(error, user) in
if error != nil{
print(error?.localizedDescription)
}
})
}
}
}
这是viewTwo
import Firebase
ViewTwo: UIViewController{
@IBOutlet weak var imageViewONE: UIImageView!
@IBOutlet weak var imageViewTWO: UIImageView!
@IBOutlet weak var imageViewTHREE: UIImageView!
@IBOutlet weak var imageViewFOUR: UIImageView!
var imageOne: UIImage?
var imageTwo: UIImage?
var imageThree: UIImage?
var imageFour: UIImage?
override func viewWillAppear(animated: Bool) {
super.viewWillAppear(animated)
let ref = FIRDatabase.database().reference().child("users")
ref.observeEventType(.ChildAdded, withBlock: {
(snapshot) in
if let dict = snapshot.value as? [String: AnyObject]{
let imageURLStr = dict["imageOneURL"] as? String
self.loadImageUsingCacheWithURLString(imageURLStr)
}
}
//Custom Function
func loadImageUsingCacheWithURLString(urlString: String){
let url = NSURL(string: urlString)
NSURLSession.sharedSession().dataTaskWithURL(url!, completionHandler: {
(data, response, error) in
if error != nil {
print(error?.localizedDescription)
return
}
dispatch_async(dispatch_get_main_queue(), {
if let displayImage = UIImage(data: data!){
self.imageOne = displayImage!
self.imageViewOne.image = self.imageOne
}
})
}).resume()
}
}
最佳答案
事实证明,Firebase 不允许您存储任何内容的数组。获得每个图像的元数据 URL 后,您必须将每个图像单独保存在 FBDatabase 和 FBStorage 中。
关于arrays - 如何使用 iOS Swift 将一组图像存储在 Firebase Storage 中的 1 个路径下,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/39112383/