从新的Firebase中检索数据 [英] Retrieve data from new Firebase
本文介绍了从新的Firebase中检索数据的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
使用这个结构:
$ p $
let ref = FIRDatabase.database()。reference()
重写func viewDidLoad(){
super.viewDidLoad()
ref.observeEventType(FIRDataEventType.Value,withBlock:{(snapshot)in
let postDict = snapshot.value as![String :AnyObject]
print(\(postDict))
})
}
运行后我看到错误:
2016-05-19 10:04:22.264 123a [88652 :13688922]默认应用尚未配置。
2016-05-19 10:04:22.276 123a [88652:13688922] ***终止应用程序由于未捕获的异常'MissingDatabaseURL',原因:'无法获得FIRDatabase实例:FIRApp对象的FirebaseOptions中没有databaseURL对象'
***第一次抛出调用堆栈:
解决这个问题。
GoogleService-Info.plist我添加到项目中。
解决方案
我还没有看到这个答案,将配置调用添加到AppDelegate init方法。所以它看起来像:
override init(){
super.init()
// Firebase Init
FIRApp.configure()
}
Please help. After migrating to new Firebase I can't retrieve data. Use this construction:
let ref = FIRDatabase.database().reference()
override func viewDidLoad() {
super.viewDidLoad()
ref.observeEventType(FIRDataEventType.Value, withBlock: { (snapshot) in
let postDict = snapshot.value as! [String : AnyObject]
print("\(postDict)")
})
}
After running I see error:
2016-05-19 10:04:22.264 123a[88652:13688922] The default app has not been configured yet.
2016-05-19 10:04:22.276 123a[88652:13688922] *** Terminating app due to uncaught exception 'MissingDatabaseURL', reason: 'Failed to get FIRDatabase instance: FIRApp object has no databaseURL in its FirebaseOptions object.'
*** First throw call stack:
I read documentation, but can't resolve this problem. GoogleService-Info.plist I add to project.
解决方案
I didn't see this answer yet, I had to add the configure call to the AppDelegate init method. So it looks like:
override init() {
super.init()
// Firebase Init
FIRApp.configure()
}
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