如何在firebase存储中存储图像并在数据库中保存指向它们的链接？
如何在firebase存储中存储图像并在数据库中保存指向它们的链接？
提问于 2018-08-23 03:40:44
我四处寻找这个问题的答案。我得到的最接近的是here，然而，它并没有准确地回答我的问题。也就是说，如何在数据库中存储对保存在firebase存储中的图像的引用。
下面是我尝试过的代码。它可以在上传时存储一张图片，但我不确定这是否是他们存储引用的意思。
if let imageData = UIImageJPEGRepresentation(image, 0.8) {
let metadata = storageRef //.child("poop/")
let uploadTask = metadata.putData(imageData, metadata: nil) {
(metadata, error) in
guard let metadata = metadata else {
// Uh-oh, an error occurred!
return
}
// You can also access to download URL after upload.
storageRef.downloadURL {
(url, error) in
guard let downloadURL = url else {
// Uh-oh, an error occurred!
return
}
//let imgURL = url
//database integration
let ref = Database.database().reference()
let usersRef = ref.child("usersPosts")
let uid = Auth.auth().currentUser?.uid
let newUserRef = usersRef.child(uid!)
//creates a child for email and password (i think we shud store password so we can tell sumone what it is inmediatly, maybe)
newUserRef.setValue(["Image": "\(downloadURL)"])
}
}
// let imgURL = storageRef.downloadURL
//
// //database integration
// let ref = Database.database().reference()
// let usersRef = ref.child("usersPosts")
//
// let uid = Auth.auth().currentUser?.uid
// let newUserRef = usersRef.child(uid!)
// //creates a child for email and password (i think we shud store password so we can tell sumone what it is inmediatly, maybe)
//// newUserRef.setValue(["Image": "\(imgURL)"])
// For progress
uploadTask.observe(.progress, handler: { (snapshot) in
guard let progress = snapshot.progress else {
return
}
let percentage = (Float(progress.completedUnitCount) / Float(progress.totalUnitCount))
progressBlock(Double(percentage))
})
} else {
completionBlock(nil, "Image could not be converted to Data.")
}非常感谢你的帮助！
回答 2
Stack Overflow用户
发布于 2018-08-23 13:04:37
请根据需要修改您的代码
var imgData: NSData = NSData(data: UIImageJPEGRepresentation((self.img_Photo?.image)!, 0.8)!)
self.uploadProfileImageToFirebase(data: imgData)
func uploadProfileImageToFirebase(data:NSData){
let storageRef = Storage.storage().reference().child("usersPosts").child("\(uid).jpg")
if data != nil {
storageRef.putData(data as Data, metadata: nil, completion: { (metadata, error) in
if(error != nil){
print(error)
return
}
guard let userID = Auth.auth().currentUser?.uid else {
return
}
// Fetch the download URL
storageRef.downloadURL { url, error in
if let error = error {
// Handle any errors
if(error != nil){
print(error)
return
}
} else {
// Get the download URL for 'images/stars.jpg'
let urlStr:String = (url?.absoluteString) ?? ""
let values = ["downloadURL": urlStr]
self.addImageURLToDatabase(uid: userID, values: values as [String : AnyObject])
}
}
})
}
}
func addImageURLToDatabase(uid:String, values:[String:AnyObject]){
let ref = Database.database().reference(fromURL: "https://exampleapp.firebaseio.com/")
let usersReference = ref.child("usersPosts").child((Auth.auth().currentUser?.uid)!)
usersReference.updateChildValues(values) { (error, ref) in
if(error != nil){
print(error)
return
}
self.parentVC?.dismiss(animated: true, completion: nil)
}
}Stack Overflow用户
发布于 2019-08-07 16:53:00
(TS)
onFileChanged(param){
var aa;
const file: File = param.target.files[0];
const metaData = { 'contentType': file.type };
const StorageRef: firebase.storage.Reference = firebase.storage().ref('/photos/Category/'+this.CategoryName);
const Store = StorageRef.put(file, metaData);
setTimeout(() => {
const UP: firebase.storage.UploadTask = Store;
UP.snapshot.ref.getDownloadURL().then(function (downloadURL) {
console.log('File available at', downloadURL);
aa = downloadURL;
});
}, 1000);
setTimeout(() => {
this.ImageLink = aa;
debugger;
}, 2000);
IN HTMLtype="file" accept="image/*" #file style="display: none">
<img (click)="file.click()" style="margin-left: 10%"src="http://icons.iconarchive.com/icons/icons8/windows-8/512/Photo-Video-Stack-Of-Photos-icon.png" width="50px" />将*作为firebase导入为'@ionic/firebase‘
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/51974047
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