ios - Retrieve only one value(forKey: ) from Firebase Database -

-

right have used breakpoint check value @ each step of method. print statement works know going through. value of newannotationsubtitle "1 cupertino ca, us" , want check if annotationsubtitle in database same. let existingannotationsubtitle returns nil know there value. can't seem access key: value. can change?

for reference, placemarkname = "apple infinite loop" 

let annotationref = database.database().reference(withpath: "annotationitems")  annotationref.observesingleevent(of: .value, with: { snapshot in     print("it works")     if snapshot.haschild(placemarkname!) {        let newannotationsubtitle: string = preannotationlistitem.preannotationsubtitle        let existingannotationsubtitle = snapshot.childsnapshot(forpath: placemarkname!).value(forkey: "annotationsubtitle")! as? string     }

my json looks 

"annotationitems" : {    "apple infinite loop" : {      "annotationsubtitle" : "1 cupertino ca, us",    } }


Comments

Post a Comment

Popular posts from this blog

ios - MKAnnotationView layer is not of expected type: MKLayer -

-
Image
so code works fine logger riddled message. there way rid of or suppress it? postannotation.swift class postannotation: mkpointannotation { //mark: properties let post: post //mark: initialization init(post: post) { self.post = post super.init() self.coordinate = cllocationcoordinate2d(latitude: post.latitude, longitude: post.longitude) self.title = post.title self.subtitle = post.timestring() } } adding annotation let annotation = postannotation(post: post) self.map.addannotation(annotation) func mapview func mapview(_ mapview: mkmapview, viewfor annotation: mkannotation) -> mkannotationview? { if annotation mkuserlocation { return nil } var annotationview = mapview.dequeuereusableannotationview(withidentifier: "pin") as? mkpinannotationview if annotationview == nil { annotationview = mkpinannotationview(annotation: annotation, reuseidentifier: "pin")
Read more

ZeroMQ on Windows, with Qt Creator -

-
i have installed zmq link given below on windows 7. http://zeromq.org/distro:microsoft-windows 1) have c++ project in qt-creator , i'm using zmq c++ binding (zhelpers.hpp etc). 2) have added .lib installed zmq folder qtcreator 3) while compiling, compiler looks _imp__zmq_verion, in .dll files present in .lib have __imp_zmq_version. 4) causing undefined reference zmq_version. anyone else faced problem , has solution ?
Read more

unity3d - Unity SceneManager.LoadScene quits application -

-
i have 2 different scenes 1 named 'main' , other 'game' both added scenes in load. when use scenemanager.loadscene("game"); works no problem when tried return main scene code if (input.getkeydown (keycode.escape)) { scenemanager.loadscene("main"); } strangely game quits. thanks. sorry interruption. somewhere on other script found code. if (input.getkeydown (keycode.escape)) { application.quit (); } that's bad, know...
Read more