framework-res.apk res\values\strings.xml
<string name="config_networkLocationProviderPackageName">com.baidu.map.location</string>

frameworks/base/core/res/res/values/config.xml

目前的服务提供商

com.google.android.location.network.NetworkLocationService

com.baidu.map.location.BaiduNetworkLocationService

com.amap.android.location.NetworkLocationService

com.qualcomm.location.nlp.NlpProxyService

Service Action

<action android:name="com.google.android.location.NetworkLocationProvider" />

<action android:name="com.android.location.service.NetworkLocationProvider" />

<action android:name="com.qualcomm.services.location.xtwifi.XTWiFiLocationProvider" />

<action android:name="com.baidu.bms.location.BaiduNetworkLocationProvider" />

<action android:name="com.android.location.service.v2.NetworkLocationProvider" />

<action android:name="com.android.location.service.v3.NetworkLocationProvider" />

<action android:name="com.qualcomm.location.service.v2.NetworkLocationProvider" />

http://www.tuicool.com/articles/aMNbAb