有什么方法可以在运行时切换LocationManager的提供程序吗?
我需要知道每2000米的位置。所以我创建了一个LocationManager并设置如下:
locationManager.requestLocationUpdates(provider, 0, 2000, this);
这个想法是让locationManager保持运行所有应用程序的生命周期。所以我不想"杀死" LocationManager(使用locationManager.removeUpdates(this);
)。
如果在应用执行过程中GPS已关闭或没有响应(超时),我正在寻找一种方法来更改网络提供商的GPS提供商
谢谢,对不起我的英文
答案 0 :(得分:0)
此代码可能对您有所帮助。它的作用是,如果可用,它将采用GPS坐标。如果GPS坐标不可用,它将与网络坐标一起稳定下来。
// flag for GPS status
boolean isGPSEnabled = false;
// flag for network status
boolean isNetworkEnabled = false;
// flag for GPS status
boolean canGetLocation = false;
Location location; // location
double latitude; // latitude
double longitude; // longitude
// The minimum distance to change Updates in meters
private static final long MIN_DISTANCE_CHANGE_FOR_UPDATES = 10; // 10 meters
// The minimum time between updates in milliseconds
private static final long MIN_TIME_BW_UPDATES = 1000 * 60 * 1; // 1 minute
// Declaring a Location Manager
protected LocationManager locationManager;
public Location getLocation() {
try {
locationManager = (LocationManager) mContext.getSystemService(LOCATION_SERVICE);
// getting GPS status
isGPSEnabled = locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
// getting network status
isNetworkEnabled = locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
if (!isGPSEnabled && !isNetworkEnabled) {
// no GPS Provider and no network provider is enabled
}
else
{ // Either GPS provider or network provider is enabled
// First get location from Network Provider
if (isNetworkEnabled)
{
locationManager.requestLocationUpdates( LocationManager.NETWORK_PROVIDER, MIN_TIME_BW_UPDATES,
MIN_DISTANCE_CHANGE_FOR_UPDATES, this);
if (locationManager != null)
{
location = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
if (location != null)
{
latitude = location.getLatitude();
longitude = location.getLongitude();
this.canGetLocation = true;
}
}
}// End of IF network enabled
// if GPS Enabled get lat/long using GPS Services
if (isGPSEnabled)
{
locationManager.requestLocationUpdates( LocationManager.GPS_PROVIDER, MIN_TIME_BW_UPDATES,
MIN_DISTANCE_CHANGE_FOR_UPDATES, this);
if (locationManager != null)
{
location = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
if (location != null)
{
latitude = location.getLatitude();
longitude = location.getLongitude();
this.canGetLocation = true;
}
}
}// End of if GPS Enabled
}// End of Either GPS provider or network provider is enabled
} catch (Exception e)
{
e.printStackTrace();
}
// If GPS is enabled, the GPS coordinates will be returned in location.
// If GPS is not enabled, then the network coordinates will be returned.
// If both are enabled, then GPS co orindate will be returned because GPS coordinates have more accuracy than network coordinates.
return location;
}
答案 1 :(得分:-1)
或者您可以使用Fused Location Provider(Google Play服务)
融合位置提供商智能地管理底层定位技术,并根据您的需求为您提供最佳位置。