getLastKnownLocation在更高版本的Android (6及以上)中不起作用

<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />

GoogleApiClient mGoogleApiClient = new GoogleApiClient.Builder(this)
        .addApi(LocationServices.API)
        .addConnectionCallbacks(this)
        .addOnConnectionFailedListener(this)
        .build();

mGoogleApiClient.connect();

// 请求定位权限
if (ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION)
        != PackageManager.PERMISSION_GRANTED) {
    ActivityCompat.requestPermissions(this,
            new String[]{Manifest.permission.ACCESS_FINE_LOCATION},
            PERMISSIONS_REQUEST_ACCESS_FINE_LOCATION);
}

@Override
public void onConnected(Bundle connectionHint) {
    if (ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION)
            == PackageManager.PERMISSION_GRANTED) {
        Location lastLocation = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient);
        if (lastLocation != null) {
            // 处理位置信息
        }
    }
}