Java 与其他活动Android共享LocationListener
我正在尝试构建一个需要在android上使用GPS API的应用程序。我有两项活动需要使用gps 第一个是一个活动，它有一个Java 与其他活动Android共享LocationListener,java,android,gps,location,listener,Java,Android,Gps,Location,Listener,我正在尝试构建一个需要在android上使用GPS API的应用程序。我有两项活动需要使用gps 第一个是一个活动，它有一个LocationListener，当它获取位置时，它会从web API获取该位置的天气并将其保存在某个地方 这样做之后，它会启动一个意图，从而启动另一个活动。另一方面，另一项活动需要从gps获取速度并实时更新 现在我的问题是，是否可以在第二个活动中使用来自另一个活动的相同LocationListener，而无需重新连接gps并再次执行所有这些操作？或者，除了在第二个活动中再
LocationListenerLocationListener import java.util.Timer;
import java.util.TimerTask;
import android.content.Context;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
public abstract class MyLocation {
Timer timer1;
static LocationManager lm;
LocationResult locationResult;
boolean gps_enabled = false;
boolean network_enabled = false;
public boolean getLocation(Context context, LocationResult result)
{
//I use LocationResult callback class to pass location value from MyLocation to user code.
locationResult=result;
if(MyLocation.lm == null)
MyLocation.lm = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE);
//exceptions will be thrown if provider is not permitted.
try
{
gps_enabled = MyLocation.lm.isProviderEnabled(LocationManager.GPS_PROVIDER);
}
catch(Exception ex)
{}
try
{
network_enabled = MyLocation.lm.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
}
catch(Exception ex)
{}
//don't start listeners if no provider is enabled
if(!gps_enabled && !network_enabled)
return false;
if(gps_enabled)
MyLocation.lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, locationListenerGps);
if(network_enabled)
MyLocation.lm.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, locationListenerNetwork);
timer1=new Timer();
// timer1.schedule(new GetLastLocation(), 20000);
timer1.scheduleAtFixedRate(new GetLastLocation(), 0,50000);
return true;
}
LocationListener locationListenerGps = new LocationListener() {
public void onLocationChanged(Location location) {
timer1.cancel();
locationResult.gotLocation(location);
MyLocation.lm.removeUpdates(this);
MyLocation.lm.removeUpdates(locationListenerNetwork);
}
public void onProviderDisabled(String provider) {}
public void onProviderEnabled(String provider) {}
public void onStatusChanged(String provider, int status, Bundle extras) {}
};
LocationListener locationListenerNetwork = new LocationListener() {
public void onLocationChanged(Location location) {
timer1.cancel();
locationResult.gotLocation(location);
MyLocation.lm.removeUpdates(this);
MyLocation.lm.removeUpdates(locationListenerGps);
}
public void onProviderDisabled(String provider) {}
public void onProviderEnabled(String provider) {}
public void onStatusChanged(String provider, int status, Bundle extras) {}
};
class GetLastLocation extends TimerTask {
@Override
public void run() {
// lm.removeUpdates(locationListenerGps);
// lm.removeUpdates(locationListenerNetwork);
Location net_loc=null, gps_loc=null;
if(gps_enabled)
gps_loc = MyLocation.lm.getLastKnownLocation(LocationManager.GPS_PROVIDER);
if(network_enabled)
net_loc = MyLocation.lm.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
//if there are both values use the latest one
if(gps_loc!=null && net_loc!=null){
if(gps_loc.getTime()>net_loc.getTime())
locationResult.gotLocation(gps_loc);
else
locationResult.gotLocation(net_loc);
return;
}
if(gps_loc!=null){
locationResult.gotLocation(gps_loc);
return;
}
if(net_loc!=null){
locationResult.gotLocation(net_loc);
return;
}
locationResult.gotLocation(null);
}
}
public void closeListeners(){
timer1.cancel();
lm.removeUpdates(locationListenerGps);
lm.removeUpdates(locationListenerNetwork);
}
public static abstract class LocationResult{
public abstract void gotLocation(Location location);
}
public abstract void locationClick() ;
}
import java.util.Timer;
import java.util.TimerTask;
import android.content.Context;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
public abstract class MyLocation {
Timer timer1;
static LocationManager lm;
LocationResult locationResult;
boolean gps_enabled = false;
boolean network_enabled = false;
public boolean getLocation(Context context, LocationResult result)
{
//I use LocationResult callback class to pass location value from MyLocation to user code.
locationResult=result;
if(MyLocation.lm == null)
MyLocation.lm = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE);
//exceptions will be thrown if provider is not permitted.
try
{
gps_enabled = MyLocation.lm.isProviderEnabled(LocationManager.GPS_PROVIDER);
}
catch(Exception ex)
{}
try
{
network_enabled = MyLocation.lm.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
}
catch(Exception ex)
{}
//don't start listeners if no provider is enabled
if(!gps_enabled && !network_enabled)
return false;
if(gps_enabled)
MyLocation.lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, locationListenerGps);
if(network_enabled)
MyLocation.lm.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, locationListenerNetwork);
timer1=new Timer();
// timer1.schedule(new GetLastLocation(), 20000);
timer1.scheduleAtFixedRate(new GetLastLocation(), 0,50000);
return true;
}
LocationListener locationListenerGps = new LocationListener() {
public void onLocationChanged(Location location) {
timer1.cancel();
locationResult.gotLocation(location);
MyLocation.lm.removeUpdates(this);
MyLocation.lm.removeUpdates(locationListenerNetwork);
}
public void onProviderDisabled(String provider) {}
public void onProviderEnabled(String provider) {}
public void onStatusChanged(String provider, int status, Bundle extras) {}
};
LocationListener locationListenerNetwork = new LocationListener() {
public void onLocationChanged(Location location) {
timer1.cancel();
locationResult.gotLocation(location);
MyLocation.lm.removeUpdates(this);
MyLocation.lm.removeUpdates(locationListenerGps);
}
public void onProviderDisabled(String provider) {}
public void onProviderEnabled(String provider) {}
public void onStatusChanged(String provider, int status, Bundle extras) {}
};
class GetLastLocation extends TimerTask {
@Override
public void run() {
// lm.removeUpdates(locationListenerGps);
// lm.removeUpdates(locationListenerNetwork);
Location net_loc=null, gps_loc=null;
if(gps_enabled)
gps_loc = MyLocation.lm.getLastKnownLocation(LocationManager.GPS_PROVIDER);
if(network_enabled)
net_loc = MyLocation.lm.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
//if there are both values use the latest one
if(gps_loc!=null && net_loc!=null){
if(gps_loc.getTime()>net_loc.getTime())
locationResult.gotLocation(gps_loc);
else
locationResult.gotLocation(net_loc);
return;
}
if(gps_loc!=null){
locationResult.gotLocation(gps_loc);
return;
}
if(net_loc!=null){
locationResult.gotLocation(net_loc);
return;
}
locationResult.gotLocation(null);
}
}
public void closeListeners(){
timer1.cancel();
lm.removeUpdates(locationListenerGps);
lm.removeUpdates(locationListenerNetwork);
}
public static abstract class LocationResult{
public abstract void gotLocation(Location location);
}
public abstract void locationClick() ;
}