从UIImage Picker上传图片到新的Firebase(Swift)
问题描述:
我有一个UIImagePicker设置在我的应用程序,工作正常。我想在我的UIImage选择器被选中时上传个人资料图片到Firebase。这是我选择照片时的功能。从UIImage Picker上传图片到新的Firebase(Swift)
//image picker did finish code
func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : AnyObject]) {
let chosenImage = info[UIImagePickerControllerOriginalImage] as! UIImage
profilePic.contentMode = .ScaleAspectFill
profilePic.image = chosenImage
profilePic.hidden = false
buttonStack.hidden = true
changeButtonView.hidden = false
self.statusLabel.text = "Here is Your Profile Picture"
dismissViewControllerAnimated(true, completion: nil)
}
新文档声明我们需要声明NSURl以上传文件。这里是我试图找到给定文件的NSURL,但它不起作用。这里是文档和一个链接:https://firebase.google.com/docs/storage/ios/upload-files#upload_from_data_in_memory
// File located on disk
let localFile: NSURL = ...
// Create a reference to the file you want to upload
let riversRef = storageRef.child("images/rivers.jpg")
// Upload the file to the path "images/rivers.jpg"
let uploadTask = riversRef.putFile(localFile, metadata: nil) { metadata, error in
if (error != nil) {
// Uh-oh, an error occurred!
} else {
// Metadata contains file metadata such as size, content-type, and download URL.
let downloadURL = metadata!.downloadURL
}
}
这里是我的检索UIImagePicker的NSURL尝试:
//image picker did finish code
func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : AnyObject]) {
let chosenImage = info[UIImagePickerControllerOriginalImage] as! UIImage
//getting the object's url
let imageUrl = info[UIImagePickerControllerReferenceURL] as! NSURL
let imageName = imageUrl.lastPathComponent
let documentDir = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true).first! as String;
let photoUrl = NSURL(fileURLWithPath: documentDir)
let localPath = photoUrl.URLByAppendingPathComponent(imageName!)
self.localFile = localPath
profilePic.contentMode = .ScaleAspectFill
profilePic.image = chosenImage
profilePic.hidden = false
buttonStack.hidden = true
changeButtonView.hidden = false
self.statusLabel.text = "Here is Your Profile Picture"
dismissViewControllerAnimated(true, completion: nil)
}
我相信,我也遇到了困难,如果图像是因为它尚未保存在设备上,而不是从相册中取出。我如何找到这张图片/快照的NSURL?
答
这里是我的方法来上传和下载从火力存储用户的个人资料照片:
func imagePickerController(picker: UIImagePickerController, didFinishPickingImage image: UIImage, editingInfo: [String : AnyObject]?) {
userPhoto.image = image
dismissViewControllerAnimated(true, completion: nil)
var data = NSData()
data = UIImageJPEGRepresentation(userPhoto.image!, 0.8)!
// set upload path
let filePath = "\(FIRAuth.auth()!.currentUser!.uid)/\("userPhoto")"
let metaData = FIRStorageMetadata()
metaData.contentType = "image/jpg"
self.storageRef.child(filePath).putData(data, metadata: metaData){(metaData,error) in
if let error = error {
print(error.localizedDescription)
return
}else{
//store downloadURL
let downloadURL = metaData!.downloadURL()!.absoluteString
//store downloadURL at database
self.databaseRef.child("users").child(FIRAuth.auth()!.currentUser!.uid).updateChildValues(["userPhoto": downloadURL])
}
}
}
我还存储了图像的URL到火力数据库,并检查用户是否拥有个人资料照片或u可能会崩溃:
//get photo back
databaseRef.child("users").child(userID!).observeSingleEventOfType(.Value, withBlock: { (snapshot) in
// check if user has photo
if snapshot.hasChild("userPhoto"){
// set image locatin
let filePath = "\(userID!)/\("userPhoto")"
// Assuming a < 10MB file, though you can change that
self.storageRef.child(filePath).dataWithMaxSize(10*1024*1024, completion: { (data, error) in
let userPhoto = UIImage(data: data!)
self.userPhoto.image = userPhoto
})
}
})
你也可以创建这样的路径:let path =“\(NSUUID()。uuidString)” – Neen
@Neen伟大的建议!谢谢。 –
上传位的效果很好。下载不适合我。我必须以不同的方式做。 –