I'm developing app with firebase with swift.
I got error when using FDataSnapShot.
Here is my code.
DataService.dataService.DATA_REF.observeEventType(.Value, withBlock: {
snapshot in
var newItems = [FDataSnapshot]()
// loop through the children and append them to the new array
for item in snapshot.children {
newItems.append(item as! FDataSnapshot)
}
// replace the old array
self.items = newItems
})
I installed firebase sdk with cocoapods.
My pod file looks like this.
use_frameworks!
pod 'Firebase'
target 'nos' do
end
Is there anybody who has experience in this?
*Note: I'm using the latest version of Xcode(7.2).
I really hope to hear from you soon.
If you're attempting to use on a UIViewController, make sure you add:
import Firebase
to YourViewController, clean cache (ctrl+k), and rebuild (ctrl+b) after you've added the CocoaPod to your project.
Related
I'm just getting started with Xcode and iOS development. I am supposed to reproduce an iOS project on a tvOS.
One of the frameworks is JSQCoreDataKit
In the original iOS project, this framework exists in two places:
PODS:.
FRAMEWORKS.
I installed the framework following the manual instructions in this link.
So in the new project, it is installed as a normal framework:
.
The problem I have faced is : Some of the code that works in the original project, relies on a code that is defined in the PODS folder:
EXAMPLE:
func saveChanges() {
stack.mainContext.performAndWait {
saveContext(self.stack.mainContext)
}
}
saveContext function exists in:
And this is its definition(just in case):
public func saveContext(_ context: NSManagedObjectContext, wait: Bool = true, completion: ((SaveResult) -> Void)? = nil) {
let block = {
guard context.hasChanges else { return }
do {
try context.save()
completion?(.success)
}
catch {
completion?(.failure(error as NSError))
}
}
wait ? context.performAndWait(block) : context.perform(block)
}
So while in the original project where Pods exists, this works fine.
In the new project, where it doesn't exist, and the framework is installed manually, I get this error:
Use of unresolved identifier 'saveContext'
But, the framework gets imported successfully with no errors :
import JSQCoreDataKit
One last thing, adding the framework with the manual method described in this link doesn't make it appear in here:
Hii i also had the same issue which i solved !!
So Framework and pod is different.
Pod = Library
When to use them ??
1.Framework - Use it When you want to Hide the logic in the Code.
Mostly used in Banking Frameworks.
In framework no files and folders are visible everything is hidden.
2.Pod - Mostly used so that you can share your code and people can also see it and edit it.Files and Folder Structure is also visible.
Just go to youtube and search for
How to create framework.
How to create Library.
Youwill get it.
Hope you get it!
I am trying to integrate Firebase backend to my app.
Created my podfile with
pod 'Firebase'
Everything looks fine with the sdk import
In my first view controller I do:
import Firebase
override func viewDidLoad() {
super.viewDidLoad()
let ref = Firebase(url: "https://<YOUR-FIREBASE-APP>.firebaseio.com")
ref.authAnonymouslyWithCompletionBlock { error, authData in
if error != nil {
// There was an error logging in anonymously
} else {
// We are now logged in
}
}
}
But i got an Can not call value of non-function type error
Thanks in advance
So they have changed the way you install Firebase with pods, Now instead of just adding pod 'Firebase' you must add the individual pods like this.
use_frameworks!
target “Your Project” do
pod 'Firebase/Core’
pod 'Firebase/Database’
pod 'Firebase/Auth’
end
However, you only need to put 'import Firebase' and it will cover all pods relating to Firebase. And don't forget to configure Firebase in the didFinishLaunchingWithOptions method of your AppDelegate!
FIRApp.configure()
Good Luck!!
I have installed the firebase pod in my project and imported Firebase to my swift class but when i am trying to implement Firebase(url:"") function its not working it says :
Cannot call value of non-function type 'module Firebase'
I am using xcode 7.3.1
there is the pic of my code:
Which version of Firebase you are using?
I'm assuming 3.0+, so you'll need to get the reference as follow:
let ref = FIRDatabase.database().reference()
Edit:
Make sure to add pod 'Firebase/Database' in your podfile and then import FirebaseDatabase
I have try everythng and I have imported pods to my project, done it several times in several new projects, but always get this error:
'Cannot call value of non-function type 'module'
Is it possible that my cocoa-pods are damaged somehow?
When I insert this code:
import Firebase
let BASE_URL = "my_project_url"
var FIREBASE_REF = FIRDatabase.database().reference()
I can see in Output/Debug window that I am connected with firebase, but when I start with code:
let BASE_URL = "my_project_url"
let FIREBASE_REF = Firebase(url: BASE_URL)
var CURRENT_USER: Firebase
{
let userID = NSUserDefaults.standardUserDefaults().valueForKey("uid") as! String
let currentUser = Firebase(url: "\(FIREBASE_REF)").childByAppendingPath("users").childByAppendingPath(userID)
return currentUser!
}
always get error. I have really try stuff from a lot tutorials, I tried a lot of things over past few days and nothing happened.
I have also look and read this topics, but did not help:
Cannot call value of non-function type 'module'
xcode error : Cannot call value of non-function type module Firebase
Unable to connect Firebase to my Xcode swift app?
I have open many new projects, done it import pod many times, I have import pod with insert in my pod file:
pod "Firebase"
and like this:
pod "Firebase"
pod "Firebase/Database"
also tried like this:
pod 'Firebase', '>= 2.5.1'
pod "Firebase/Database"
but always the same problem. Pods are inserted, I see Firebase folder and I know this is OK, so what could be wrong?
Like I said, I see that I am connected with Firebase in Debug window, as soon I start coding, error appears, and it is in every project like this, even when I try different approach and different code.
Any ideas?
You're either using the wrong version of Firebase, or following the wrong guide, depending on what you're trying to do.
Your pod config will install the latest version (3.2.1) while the code you've written is for 2.5.1 and before.
I am matching guides for using AWSDynamoDB in a test project using Swift 2 in XCode 7.0 Beta. I am required to use that platform instead of the previous stable one and make it work.
I am using the next links:
https://docs.aws.amazon.com/mobile/sdkforios/developerguide/setup.html
http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/LoadData_Java.html
Best way to make Amazon AWS DynamoDB queries using Swift?
I already made it work for reading and writing text files and images to an S3 Bucket, but now that I am trying to use DynamoDB service something might be missing.
Here is my Podfile contents:
# Uncomment this line to define a global platform for your project
platform :ios, '8.3'
target 'AWSSDKTest' do
source 'https://github.com/CocoaPods/Specs.git'
pod 'AWSCore'
pod 'AWSAutoScaling'
pod 'AWSCloudWatch'
pod 'AWSDynamoDB'
pod 'AWSEC2'
pod 'AWSElasticLoadBalancing'
pod 'AWSKinesis'
pod 'AWSLambda'
pod 'AWSMachineLearning'
pod 'AWSMobileAnalytics'
pod 'AWSS3'
pod 'AWSSES'
pod 'AWSSimpleDB'
pod 'AWSSNS'
pod 'AWSSQS'
pod 'AWSCognito'
end
target 'AWSSDKTestTests' do
end
I had to delete Podfile.lock and Pods folder, deleted Configuration Sets in Project->Info->Configurations, and installed pods again.
Here is my bridging.h file:
#ifndef AWSSDKTest_bridging_h
#define AWSSDKTest_bridging_h
#endif
#import <AWSCore/AWSCore.h>
#import <AWSS3/AWSS3.h>
#import <AWSDynamoDB/AWSDynamoDB.h>
#import <AWSSQS/AWSSQS.h>
#import <AWSSNS/AWSSNS.h>
#import <AWSCognito/AWSCognito.h>
I downloaded the aws-ios-sdk-2.2.0.zip file, unzipped and added to Frameworks all the AWS frameworks.
I am trying to use AWSDynamoDBModel, here is a swift file for implementing the Upload Sample Items Example for using DynamoDB Mapper:
import Foundation
class Forum : AWSDynamoDBModel, AWSDynamoDBModeling {
var name : String = ""
var category : String = ""
var threads : Int = 0
var messages : Int = 0
var views : Int = 0
// override init!() { super.init() }
required init!(coder: NSCoder!) {
fatalError("init(coder:) has not been implemented")
}
class func dynamoDBTableName() -> String! {
return "Demo"
}
class func hashKeyAttribute() -> String! {
return "email"
}
class func rangeKeyAttribute() -> String! {
return "date"
}
/*
override init(dictionary dictionaryValue: [NSObject : AnyObject]!, error: NSErrorPointer) {
super.init(dictionary: dictionaryValue, error: error)
}
override func isEqual(anObject: AnyObject?) -> Bool {
return super.isEqual(anObject)
}
*/
}
I had to comment the lines that caused error because those might be fixed. The errors mentioned that those functions couldnt be overridden and that super.init couldnt be called inside a root method.
After cleaning and building again, the error is at the class declaration line
class Forum : AWSDynamoDBModel, AWSDynamoDBModeling {
The error says: Use of undeclared type 'AWSDynamoDBModel'
If I try writing other AWSDynamoDB classes they don't appear in the list of suggestions and then cause the same error.
Additionally I want to mention that in the developer's guide setup (first link above) the 4th point of the Getting Started with Swift section says: "Import the AWSCore header in the application delegate":
#import <AWSCore/AWSCore.h>
Than can't be done, only in the bridging.h file which is mentioned in the 2nd point.
My first request of assistance is in fixing the error mentioned and making the project recognize the AWSDynamoDB framework.
Then I request your help for any observation about this merge of different tutorials, also any other online tutorial or guide that is more clear than those mentioned.
In case you are using CocoaPods (0.36) with "use_frameworks!", this answer might solve your problem:
"Normally when you’re importing Objective-C code into Swift, you do so by including the header of the file containing that code in the “Bridging Header” for your project. And that is indeed how you include code from a static library (which your pods used to be.)
But it is not how your import Objective-C code from a Framework. To do that you simply type…
import Framework
…inside your Swift file that’s using the Objective-C class (where “Framework” is the name of the actual Framework containing the class.)"
Source here: http://rogueleaderr.com/post/115372471213/unresolved-identifier-in-swift-when-importing
I think the problem is not related to Xcode7Beta, but the installation process of your project. (My sample DynamoDB project runs fine under Xcode7Beta.)
If you installed the AWS Mobile SDK via cocoapods, you neither have to worry about the bridging file nor need to download aws-ios-sdk-2.2.0.zip file since cocoapods already did everything for you.
My suggestion would be:
clean your project, remove all aws related frameworks, bridging files that you manually added,delete Podfile.lock and Pods folder and AWSSDKTest.xcworkspace file, and the re integrate pods by running "pod install"
Open your project using Xcode 6.4, confirm it can be built and run successfully under Xcode 6.
If everything looks good via Xcode 6, reopen it via Xcode7Beta, If it failed to compile, please post the error output so I can take a look.
Thanks