Android 获取位置(GPS和网络)时出错
我想使用以下代码获取我的应用程序中的位置:Android 获取位置(GPS和网络)时出错,android,geolocation,gps,Android,Geolocation,Gps,我想使用以下代码获取我的应用程序中的位置: public Location getLocation() { boolean isGPSEnabled = false; boolean isNetworkEnabled = false; try { // Getting GPS and Network status isGPSEnabled = locationManager.isProviderEnab
public Location getLocation() {
boolean isGPSEnabled = false;
boolean isNetworkEnabled = false;
try {
// Getting GPS and Network status
isGPSEnabled = locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
isNetworkEnabled = locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
if (!isGPSEnabled && !isNetworkEnabled) return null;
LocationManager manager = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE);
location = manager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
if ((location != null && (location.getTime() + 60000 < System.currentTimeMillis())) ||
location == null){
location = manager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
}
} catch (Exception e) {
e.printStackTrace();
return null;
}
return location;
}
我想你必须通过调用一个请求来触发它。。。函数。如果设备尚未找到位置,它将返回null 我打赌,如果你打开谷歌地图,让它在打开你的应用程序之前找到你,它会像预期的那样工作 看看我对你的回答。 这是一个关于如何实现回调的示例,以便在位置可用时立即通知您
public void startLocation() {
try {
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,MIN_TIME_BW_UPDATES,MIN_DISTANCE_CHANGE_FOR_UPDATES, this);
locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER,MIN_TIME_BW_UPDATES, MIN_DISTANCE_CHANGE_FOR_UPDATES, this);
} catch (Exception e) {
e.printStackTrace();
}
}