我尝试过以下程序。它正在 eclipse 中工作 -> 如果你通过 ddms 给出纬度和经度值意味着它在模拟器中显示为当前位置.... 但它没有检测到 Android 手机中的当前位置。
private class mylocationlistener implements LocationListener {
public void onLocationChanged(Location location) {
Date today = new Date();
Timestamp currentTimeStamp = new Timestamp(today.getTime());
LocationManager lm = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
LocationListener ll = new mylocationlistener();
boolean isGPS = lm.isProviderEnabled(LocationManager.GPS_PROVIDER);
if (isGPS){
lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, ll);
if (location != null) {
Log.d("LOCATION CHANGED", location.getLatitude() + "");
Log.d("LOCATION CHANGED", location.getLongitude() + "");
String str = "\n CurrentLocation: "+
"\n Latitude: "+ location.getLatitude() +
"\n Longitude: " + location.getLongitude() +
"\n Accuracy: " + location.getAccuracy() +
"\n CurrentTimeStamp "+ currentTimeStamp;
Toast.makeText(MainActivity.this,str,Toast.LENGTH_SHORT).show();
tv.append(str);
}
else
{
String s1="GPS activation in process";
Toast.makeText(MainActivity.this,s1,Toast.LENGTH_SHORT).show();
/*alert.setTitle("gps");
alert.setMessage("GPS activation in progress,\n Please click after few second.");
alert.setPositiveButton("OK", null);
alert.show();*/
}
}
else
{
String s2="Enable Gps";
Toast.makeText(MainActivity.this,s2,Toast.LENGTH_SHORT).show();
}
}
public void onProviderDisabled(String provider) {
// TODO Auto-generated method stub
}
public void onProviderEnabled(String provider) {
// TODO Auto-generated method stub
}
public void onStatusChanged(String provider, int status, Bundle extras) {
// TODO Auto-generated method stub
}
}
最佳答案
我为此提供了一项服务。使用它可以轻松获取经度/纬度。
将此类复制/粘贴到您的项目中。
package com.sample;
import com.sample.globalconstant;
import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.location.Location;
import android.location.LocationManager;
import android.os.Bundle;
import android.os.IBinder;
import android.util.Log;
import android.widget.Toast;
public class MyServiceGPS extends Service
{
private static final String TAG = "BOOMBOOMTESTGPS";
private LocationManager mLocationManager = null;
private static final int LOCATION_INTERVAL = 1000;
private static final float LOCATION_DISTANCE = 10f;
private class LocationListener implements android.location.LocationListener{
Location mLastLocation;
public LocationListener(String provider)
{
Log.e(TAG, "LocationListener " + provider);
mLastLocation = new Location(provider);
}
public void onLocationChanged(Location location)
{
Log.e(TAG, "onLocationChanged: " + location.getLatitude() +"....."+ location.getLongitude());
globalconstant.lat = location.getLatitude();
globalconstant.lon = location.getLongitude();
Toast.makeText(getApplicationContext(), location.getLatitude() +"....."+ location.getLongitude(), 1000).show();
mLastLocation.set(location);
}
public void onProviderDisabled(String provider)
{
Log.e(TAG, "onProviderDisabled: " + provider);
}
public void onProviderEnabled(String provider)
{
Log.e(TAG, "onProviderEnabled: " + provider);
}
public void onStatusChanged(String provider, int status, Bundle extras)
{
Log.e(TAG, "onStatusChanged: " + provider);
}
}
LocationListener[] mLocationListeners = new LocationListener[] {
new LocationListener(LocationManager.GPS_PROVIDER),
new LocationListener(LocationManager.NETWORK_PROVIDER)
};
@Override
public IBinder onBind(Intent arg0)
{
return null;
}
@Override
public int onStartCommand(Intent intent, int flags, int startId)
{
Log.e(TAG, "onStartCommand");
super.onStartCommand(intent, flags, startId);
return START_STICKY;
}
@Override
public void onCreate()
{
Log.e(TAG, "onCreate");
initializeLocationManager();
try {
mLocationManager.requestLocationUpdates(
LocationManager.NETWORK_PROVIDER, LOCATION_INTERVAL, LOCATION_DISTANCE,
mLocationListeners[1]);
} catch (java.lang.SecurityException ex) {
Log.i(TAG, "fail to request location update, ignore", ex);
} catch (IllegalArgumentException ex) {
Log.d(TAG, "network provider does not exist, " + ex.getMessage());
}
try {
mLocationManager.requestLocationUpdates(
LocationManager.GPS_PROVIDER, LOCATION_INTERVAL, LOCATION_DISTANCE,
mLocationListeners[0]);
} catch (java.lang.SecurityException ex) {
Log.i(TAG, "fail to request location update, ignore", ex);
} catch (IllegalArgumentException ex) {
Log.d(TAG, "gps provider does not exist " + ex.getMessage());
}
}
@Override
public void onDestroy()
{
Log.e(TAG, "onDestroy");
super.onDestroy();
if (mLocationManager != null) {
for (int i = 0; i < mLocationListeners.length; i++) {
try {
mLocationManager.removeUpdates(mLocationListeners[i]);
} catch (Exception ex) {
Log.i(TAG, "fail to remove location listners, ignore", ex);
}
}
}
}
private void initializeLocationManager() {
Log.e(TAG, "initializeLocationManager");
if (mLocationManager == null) {
mLocationManager = (LocationManager) getApplicationContext().getSystemService(Context.LOCATION_SERVICE);
}
}
}
当您想要启动时，请在您的 Activity 中复制此代码:
startService(new Intent(this,MyServiceGPS.class));
创建一类全局常量:
public class globalconstant { public static double lat, lon; }
当您想要项目中的当前纬度和经度时，只需编写此 globalconstant.lat ,globalconstant.lon
在 list 中添加uses-permission
关于android - 无法使用 GPS 找到当前位置，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/12243560/