Swift MessageKit - Cannot Convert value of type '_?' to expected argument type 'URL?'
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I have just begun using MessageKit and have updated my code to 4.2 in swift and have been solving the problems. Yet, I am using the Firebase chat tutorial and have come across problems in the sample code that are throwing errors that aren't visible in the sample project.
Cannot convert value of type '_?' to expected argument type 'URL?'
completion(meta?.downloadURL())
swift messagekit
asked Nov 19 at 16:35
Lukas Bimba
18013
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up vote
-1
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I have just begun using MessageKit and have updated my code to 4.2 in swift and have been solving the problems. Yet, I am using the Firebase chat tutorial and have come across problems in the sample code that are throwing errors that aren't visible in the sample project.
Cannot convert value of type '_?' to expected argument type 'URL?'
completion(meta?.downloadURL())
swift messagekit
asked Nov 19 at 16:35
Lukas Bimba
18013
At which line the problem appears ?
– Julien Kode
Nov 19 at 16:36
It's related to your storage library not MessageKit
– Julien Kode
Nov 19 at 16:37
Please update your question to include all relevant code in the form of a Minimal, Complete, and Verifiable example. What is the type signature ofcompletion? What is the type ofmeta?
– Dávid Pásztor
Nov 19 at 16:38
add a comment |
up vote
-1
down vote
favorite
up vote
-1
down vote
favorite
I have just begun using MessageKit and have updated my code to 4.2 in swift and have been solving the problems. Yet, I am using the Firebase chat tutorial and have come across problems in the sample code that are throwing errors that aren't visible in the sample project.
Cannot convert value of type '_?' to expected argument type 'URL?'
completion(meta?.downloadURL())
swift messagekit
asked Nov 19 at 16:35
Lukas Bimba
18013
I have just begun using MessageKit and have updated my code to 4.2 in swift and have been solving the problems. Yet, I am using the Firebase chat tutorial and have come across problems in the sample code that are throwing errors that aren't visible in the sample project.
Cannot convert value of type '_?' to expected argument type 'URL?'
completion(meta?.downloadURL())
swift messagekit
swift messagekit
asked Nov 19 at 16:35
Lukas Bimba
18013
asked Nov 19 at 16:35
Lukas Bimba
18013
edited Nov 21 at 4:29
asked Nov 19 at 16:35
Lukas Bimba
18013
asked Nov 19 at 16:35
Lukas Bimba
18013
asked Nov 19 at 16:35
Lukas Bimba
18013
18013
At which line the problem appears ?
– Julien Kode
Nov 19 at 16:36
It's related to your storage library not MessageKit
– Julien Kode
Nov 19 at 16:37
Please update your question to include all relevant code in the form of a Minimal, Complete, and Verifiable example. What is the type signature ofcompletion? What is the type ofmeta?
– Dávid Pásztor
Nov 19 at 16:38
add a comment |
At which line the problem appears ?
– Julien Kode
Nov 19 at 16:36
It's related to your storage library not MessageKit
– Julien Kode
Nov 19 at 16:37
Please update your question to include all relevant code in the form of a Minimal, Complete, and Verifiable example. What is the type signature ofcompletion? What is the type ofmeta?
– Dávid Pásztor
Nov 19 at 16:38
At which line the problem appears ?
– Julien Kode
Nov 19 at 16:36
At which line the problem appears ?
– Julien Kode
Nov 19 at 16:36
It's related to your storage library not MessageKit
– Julien Kode
Nov 19 at 16:37
It's related to your storage library not MessageKit
– Julien Kode
Nov 19 at 16:37
Please update your question to include all relevant code in the form of a Minimal, Complete, and Verifiable example. What is the type signature of
completion? What is the type of meta?– Dávid Pásztor
Nov 19 at 16:38
Please update your question to include all relevant code in the form of a Minimal, Complete, and Verifiable example. What is the type signature of
completion? What is the type of meta?– Dávid Pásztor
Nov 19 at 16:38
add a comment |
1 Answer
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Assuming that your problem is probably the following
storage.child(channelID).child(imageName).putData(data, metadata: metadata) { meta, error in
completion(meta?.downloadURL())
}
Answer, swift 4
storage.child(channelID).child(imageName).putData(data, metadata: metadata) { metaN, error in
// then we check if the metadata and path exist
// if the error was nil, we expect the metadata and path to exist
// therefore if not, we return an error
guard let metadata = metaN, let path = metadata.path else {
completion(nil)
return
}
// now we get the download url using the path
// and the basic reference object (without child paths)
self.getDownloadURL(from: path, completion: completion)
}
private func getDownloadURL(from path: String, completion:@escaping (URL?) -> Void) {
let firebaseStorageUrl = "gs://yourApp-Firebase-Storage.appspot.com"
let storageReference = Storage.storage().reference(forURL: firebaseStorageUrl)
storageReference.child(path).downloadURL { (url, error) in
completion(url)
}
}
Be sure that you have enabled Storage in Firebase and check console errors if fails
answered Nov 23 at 18:21
iluvatar_GR
439612
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
1
down vote
accepted
Assuming that your problem is probably the following
storage.child(channelID).child(imageName).putData(data, metadata: metadata) { meta, error in
completion(meta?.downloadURL())
}
Answer, swift 4
storage.child(channelID).child(imageName).putData(data, metadata: metadata) { metaN, error in
// then we check if the metadata and path exist
// if the error was nil, we expect the metadata and path to exist
// therefore if not, we return an error
guard let metadata = metaN, let path = metadata.path else {
completion(nil)
return
}
// now we get the download url using the path
// and the basic reference object (without child paths)
self.getDownloadURL(from: path, completion: completion)
}
private func getDownloadURL(from path: String, completion:@escaping (URL?) -> Void) {
let firebaseStorageUrl = "gs://yourApp-Firebase-Storage.appspot.com"
let storageReference = Storage.storage().reference(forURL: firebaseStorageUrl)
storageReference.child(path).downloadURL { (url, error) in
completion(url)
}
}
Be sure that you have enabled Storage in Firebase and check console errors if fails
answered Nov 23 at 18:21
iluvatar_GR
439612
add a comment |
up vote
1
down vote
accepted
Assuming that your problem is probably the following
storage.child(channelID).child(imageName).putData(data, metadata: metadata) { meta, error in
completion(meta?.downloadURL())
}
Answer, swift 4
storage.child(channelID).child(imageName).putData(data, metadata: metadata) { metaN, error in
// then we check if the metadata and path exist
// if the error was nil, we expect the metadata and path to exist
// therefore if not, we return an error
guard let metadata = metaN, let path = metadata.path else {
completion(nil)
return
}
// now we get the download url using the path
// and the basic reference object (without child paths)
self.getDownloadURL(from: path, completion: completion)
}
private func getDownloadURL(from path: String, completion:@escaping (URL?) -> Void) {
let firebaseStorageUrl = "gs://yourApp-Firebase-Storage.appspot.com"
let storageReference = Storage.storage().reference(forURL: firebaseStorageUrl)
storageReference.child(path).downloadURL { (url, error) in
completion(url)
}
}
Be sure that you have enabled Storage in Firebase and check console errors if fails
answered Nov 23 at 18:21
iluvatar_GR
439612
add a comment |
up vote
1
down vote
accepted
up vote
1
down vote
accepted
Assuming that your problem is probably the following
storage.child(channelID).child(imageName).putData(data, metadata: metadata) { meta, error in
completion(meta?.downloadURL())
}
Answer, swift 4
storage.child(channelID).child(imageName).putData(data, metadata: metadata) { metaN, error in
// then we check if the metadata and path exist
// if the error was nil, we expect the metadata and path to exist
// therefore if not, we return an error
guard let metadata = metaN, let path = metadata.path else {
completion(nil)
return
}
// now we get the download url using the path
// and the basic reference object (without child paths)
self.getDownloadURL(from: path, completion: completion)
}
private func getDownloadURL(from path: String, completion:@escaping (URL?) -> Void) {
let firebaseStorageUrl = "gs://yourApp-Firebase-Storage.appspot.com"
let storageReference = Storage.storage().reference(forURL: firebaseStorageUrl)
storageReference.child(path).downloadURL { (url, error) in
completion(url)
}
}
Be sure that you have enabled Storage in Firebase and check console errors if fails
answered Nov 23 at 18:21
iluvatar_GR
439612
Assuming that your problem is probably the following
storage.child(channelID).child(imageName).putData(data, metadata: metadata) { meta, error in
completion(meta?.downloadURL())
}
Answer, swift 4
storage.child(channelID).child(imageName).putData(data, metadata: metadata) { metaN, error in
// then we check if the metadata and path exist
// if the error was nil, we expect the metadata and path to exist
// therefore if not, we return an error
guard let metadata = metaN, let path = metadata.path else {
completion(nil)
return
}
// now we get the download url using the path
// and the basic reference object (without child paths)
self.getDownloadURL(from: path, completion: completion)
}
private func getDownloadURL(from path: String, completion:@escaping (URL?) -> Void) {
let firebaseStorageUrl = "gs://yourApp-Firebase-Storage.appspot.com"
let storageReference = Storage.storage().reference(forURL: firebaseStorageUrl)
storageReference.child(path).downloadURL { (url, error) in
completion(url)
}
}
Be sure that you have enabled Storage in Firebase and check console errors if fails
answered Nov 23 at 18:21
iluvatar_GR
439612
answered Nov 23 at 18:21
iluvatar_GR
439612
answered Nov 23 at 18:21
iluvatar_GR
439612
answered Nov 23 at 18:21
iluvatar_GR
439612
439612
add a comment |
add a comment |
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At which line the problem appears ?
– Julien Kode
Nov 19 at 16:36
It's related to your storage library not MessageKit
– Julien Kode
Nov 19 at 16:37
Please update your question to include all relevant code in the form of a Minimal, Complete, and Verifiable example. What is the type signature of
completion? What is the type ofmeta?– Dávid Pásztor
Nov 19 at 16:38