Google Maps API for iOS的API密钥例外 [英] Exception on API Key of Google Maps API for iOS

问题描述

我正在使用Google Maps API for iOS开发iOS应用程序。我为我的项目安装了CocoaPod，并根据Google Developer上的教程进行配置。但是，当我运行我的项目时，它说

I am developing an iOS app using Google Maps API for IOS. And I installed the CocoaPod for my project and configure them according to tutorial on Google Developer. However, when I run my project, it says

***由于未捕获异常'GMSServicesException'，终止应用程序，原因：'Google Maps SDK for iOS必须在使用之前通过[GMSServices providesAPIKey：...]初始化。

*** Terminating app due to uncaught exception 'GMSServicesException', reason: 'Google Maps SDK for iOS must > be initialized via [GMSServices provideAPIKey:...] prior to use'

但我已经打电话给GMSServices。

But I already call "GMSServices.provideAPIKey on the AppDelegate.swift. Following is the code:

....
func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
    GMSServices.provideAPIKey("***********************")
    return true
}
....

（* *************）是我的API密钥。

(**************) is my API Key.

由于Google Maps API使用Objective C，所以我创建了一个桥接头导入库。

And because Google Maps API use Objective C, so I created a Bridging Header to import the library.

我尝试在[application：didFinishLaunchingWithOption]上设置断点，但它会在运行该函数之前引发异常，我认为是非常奇怪的。

I tried to set breakpoint on [application:didFinishLaunchingWithOption]. But it will raise exception before run that function, which I think is very weird.

对此感到困惑。

So confused about it. Thanks in advance.

推荐答案

问题终于解决了，原因是我在一个模型类中使用Google Maps库初始化一个字段它会在应用程序运行之前创建。所以这个错误发生。当我将这个变量移入方法时，问题就解决了。以下是导致错误的代码：

Problem finally solved, the reason is that I initialize a fields using Google Maps library in the one model class and it will be created before the app run. So this error happens. When I moved this variable into the method, problem solved. Following is the code that causes error:

class PlaceManager {
    let placeClient = GMSPlacesClient()
    ...
    func getSuggestions(queryString:String) -> [String]{
        ...
    }
}

After

After

class PlaceManager {
    func getSuggestions(queryString:String) -> [String]{
        let placeClient = GMSPlacesClient()
        ...
    }
}

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