Android 模拟 gps 供应商

Question

我的代码 fragment 是:

mLocationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
if(mLocationManager.getProvider(LocationManager.GPS_PROVIDER) != null) {
    mLocationManager.removeTestProvider(LocationManager.GPS_PROVIDER);
}

mLocationManager.addTestProvider(LocationManager.GPS_PROVIDER,
            "requiresNetwork" == "", "requiresSatellite" == "",
            "requiresCell" == "", "hasMonetaryCost" == "",
            "supportsAltitude" == "", "supportsSpeed" == "",
            "supportsBearing" == "",

android.location.Criteria.POWER_LOW,
        android.location.Criteria.ACCURACY_FINE);

location = new Location(LocationManager.GPS_PROVIDER);

mLocationManager.setTestProviderEnabled(
        LocationManager.GPS_PROVIDER, true);

// mLocationManager.setTestProviderLocation(LocationManager.GPS_PROVIDER,
// location);

location.setLatitude(FinalLatitudeIntArray[0]);
location.setLongitude(FinalLongitudeIntArray[0]);
mLocationManager.setTestProviderLocation(
        LocationManager.GPS_PROVIDER, location);

我收到错误:

java.lang.IllegalArgumentException: Provider "gps" unknown
at android.os.Parcel.readException(Parcel.java:1326)
at android.os.Parcel.readException(Parcel.java:1276)
at android.location.ILocationManager$Stub$Proxy.removeTestProviderEnabled(ILocationManager.java:1097)
at android.location.LocationManager.removeTestProviderEnabled(LocationManager.java:1130)

请帮我解决这个错误。 加上。 之前应用程序运行良好，但当我重新启动系统时，应用程序开始显示错误。

Answer 1

来自位置管理器上的 Android 文档:

removeTestProvider() throws 
IllegalArgumentException    if no provider with the given name exists

因此，如果您在模拟器上进行测试，则 GPS 的设置可能已因重启而重置(尝试检查您的权限和 DDMS 以再次启用它)。如果在设备上，您必须禁用 GPS(转到“设置”并启用 GPS)。

编辑:找到相关内容:here .基本上，模拟器中发生了一些看起来不稳定的事情。从该线程的评论中，尝试使用 Criteria.ACCURACY_FINE 而不是 LocationManager.GPS_PROVIDER，例如:

    LocationManager locationManager = (LocationManager)context.getSystemService( Context.LOCATION_SERVICE );

    Criteria criteria = new Criteria();
    criteria.setAccuracy( Criteria.ACCURACY_FINE );
    String provider = locationManager.getBestProvider( criteria, true );

    if ( provider == null ) {
        Log.e( TAG, "No location provider found!" );
        return;
    }

浏览该线程以获取更多信息。