编写一个程序,其中我必须使用postal code
附近的地方显示,因此首先必须使用用户的邮政编码(邮政编码accepted by user
)得到geo locations
,然后需要通过从地缘位置如何使用邮政编码获取地理位置
位置附近显示我仍然得到用户的current location
,并表示基于条件从我JSON
地方我使用,像靠近我:显示位置在<2英里distance
。
要获得current location
我使用这样的事情:
GPSTracker gps;
double latitude, longitude ;
gps = new GPSTracker(LocationsActivity.this);
if(gps.canGetLocation()){
latitude = gps.getLatitude();
longitude = gps.getLongitude();
Toast.makeText(getApplicationContext(), "Your Location is - \nLat: " + latitude + "\nLong: " + longitude, Toast.LENGTH_LONG).show();
} else {
// can't get location
// GPS or Network is not enabled
// Ask user to enable GPS/network in settings
gps.showSettingsAlert();
}
,并使用用户的当前位置,以显示<2英里距离near by places
,我使用这样的:
public void distanceBetweenTwoLocationsfromCurrentLocations() {
Location currentLocation = new Location("");
currentLocation.setLatitude(latitude);
currentLocation.setLongitude(longitude);
// new arraylist to show nearby places from current location
ArrayList<Locations> newArrayList = new ArrayList<Locations>();
for (int i = 0; i < arrayList.size(); i++) {
locations = (Locations) arrayList.get(i);
Location destinationLocation = new Location("");
destinationLocation.setLatitude(Double.valueOf(arrayList.get(i).getLatitude()));
destinationLocation.setLongitude(Double.valueOf(arrayList.get(i).getLongitude()));
double inMeters = currentLocation.distanceTo(destinationLocation);
double inKms = inMeters/1000;
double inMiles = inKms * 0.000621371;
DecimalFormat df = new DecimalFormat("#.##");
locations.setDistance(df.format(inMiles));
if (inMiles < 2) // Comapring Miles whether it is in < 2 miles or not
newArrayList.add(locations); // adding near by locations to arraylist
}
// Setting adapter again with new list having below 2 mile distance
adapter = new LocationsAdapter(LocationsActivity.this, R.layout.adapter_locations, newArrayList);
listview.setAdapter(adapter);
}
检查[this](http://stackoverflow.com/questions/11211074/android-dev-get-geo-locations-of-a-postcode)一次。 – 2015-01-21 05:38:36
@SweetWisherヅ哦..这是非常糟糕的环节,等待我来... – Sun 2015-01-21 05:42:12