java - 如何在 Android 中使用 Wifi 获取位置信息？

Question

我想通过 Wifi 获取位置并在 Google map 中工作，这对我不起作用，但 Gps 没问题，没问题。

我的代码:

locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);

if (locationManager != null) {
    boolean gpsIsEnabled = locationManager
            .isProviderEnabled(LocationManager.GPS_PROVIDER);
    boolean networkIsEnabled = locationManager
            .isProviderEnabled(LocationManager.NETWORK_PROVIDER);

    if (gpsIsEnabled) {
        locationManager.requestLocationUpdates(
                LocationManager.GPS_PROVIDER, 5000L, 10F,
                (android.location.LocationListener) this);
    } else if (networkIsEnabled) {
        locationManager.requestLocationUpdates(
                LocationManager.NETWORK_PROVIDER, 5000L, 10F,
                (android.location.LocationListener) this);
    } else {
        // Show an error dialog that GPS is disabled...
    }
} else {
    // Show some generic error dialog because something must have gone
    // wrong with location manager.
}

安卓 list :

<uses-library android:name="com.google.android.maps" />

<meta-data
    android:name="com.google.android.maps.v2.API_KEY"
    android:value="AIzaSyB4C_zHeHYMTWqW4_Wpin-5jLF9S54KDSQ" />
</application>

<permission
android:name="com.karyan.karyanmap.permission.MAPS_RECEIVE"
android:protectionLevel="signature" />

<uses-permission android:name="com.karyan.karyanmap.permission.MAPS_RECEIVE" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.CHANGE_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission    android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_MOCK_LOCATION" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.CHANGE_WIFI_MULTICAST_STATE"  />

<uses-feature android:name="android.hardware.wifi" android:required="true"/>
<uses-feature
android:name="android.hardware.camera"
android:required="false" >
</uses-feature>
<uses-feature
android:glEsVersion="0x00020000"
android:required="true" />

当 wifi 连接到互联网时，Newtork_Provider 为 null.. 如何解决问题

谢谢..

Answer 1

比如说，我可以将 GPS_PROVIDER 和 NETWORK_PROVIDER(或 PASSIVE_PROVIDER)的“请求位置更新”设置为像这样的相同函数调用:

// SETUP Location Manager
locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, this);
locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, this);
locationManager.requestLocationUpdates(LocationManager.PASSIVE_PROVIDER, 0, 0, this);

在这种情况下，我只获得 GPS 数据。