GetLastLocation始终返回null [英] GetLastLocation always returns null

问题描述

我尝试访问片段中的最后一个已知位置，如此处

I try to access the last known location in a Fragment as explained here

在我的onCreate中：

in my onCreate:

public void onCreate(@Nullable Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    mGoogleApiClient = new GoogleApiClient.Builder(getActivity())
            .addConnectionCallbacks(this)
            .addOnConnectionFailedListener(this)
            .addApi(LocationServices.API)
            .build();
}

在我的onResume中：

in my onResume:

@Override
public void onResume() {
    super.onResume();
    mGoogleApiClient.connect();
}

Fragment实现了GoogleApiClient.ConnectionCallbacks，GoogleApiClient.OnConnectionFailedListener

The Fragment implements GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener

和Connected 被称为!!

and the on Connected is called!!

@Override
public void onConnected(Bundle bundle) {
    mLastLocation = LocationServices.FusedLocationApi.getLastLocation(
            mGoogleApiClient);
    if (mLastLocation != null) {
    }
}

并且mLastLocation始终为空。每次我尝试调用GetLastLocation（）时，都会返回null。

and the mLastLocation is always null. Everytime I try to call GetLastLocation() it returns null.

任何想法为什么？

推荐答案

我从来没有尝试过这种方法，我通常会创建一个 LocationProvider 实现 LocationsSource 和 LocationListener 。以下示例可以帮助您使用此方法：
如何使用Google Maps android API v2获取My Location改变的事件？

I never tried that approach, I usually create a LocationProvider that implements LocationsSource and LocationListener. Here's an example that may help you with this approach: How to get My Location changed event with Google Maps android API v2?

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