我正在开发一款应用，在此我使用谷歌地图向用户显示当前位置。
以下代码我正在使用，但它没有给出街道地址的结果只显示地图中的当前位置并显示经度和纬度。如何在当前经度和纬度的文本字段中显示当前街道地址？
//java
public class LocationActivity extends Activity {
private TextView locationText;
private TextView addressText, textview;
private GoogleMap map;
String mob_no;
private boolean loggedIn = false;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_location);
locationText = (TextView) findViewById(R.id.location);
addressText = (TextView) findViewById(R.id.address);
// textview=(TextView)findViewById(R.id.textView_euser);
SharedPreferences sharedPreferences = getSharedPreferences(Config.SHARED_PREF_NAME, Context.MODE_PRIVATE);
loggedIn = sharedPreferences.getBoolean(Config.LOGGEDIN_SHARED_PREF, false);
mob_no = sharedPreferences.getString(Config.PHONE_SHARED_PREF, "Not Available");
// textview.setText(String.valueOf(mob_no));
//replace GOOGLE MAP fragment in this Activity
replaceMapFragment();
}
private void replaceMapFragment() {
map = ((MapFragment) getFragmentManager().findFragmentById(R.id.map))
.getMap();
// Enable Zoom
map.getUiSettings().setZoomGesturesEnabled(true);
//set Map TYPE
map.setMapType(GoogleMap.MAP_TYPE_NORMAL);
//enable Current location Button
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
// TODO: Consider calling
// ActivityCompat#requestPermissions
// here to request the missing permissions, and then overriding
// public void onRequestPermissionsResult(int requestCode, String[] permissions,
// int[] grantResults)
// to handle the case where the user grants the permission. See the documentation
// for ActivityCompat#requestPermissions for more details.
return;
}
map.setMyLocationEnabled(true);
//set "listener" for changing my location
map.setOnMyLocationChangeListener(myLocationChangeListener());
}
private GoogleMap.OnMyLocationChangeListener myLocationChangeListener() {
return new GoogleMap.OnMyLocationChangeListener() {
@Override
public void onMyLocationChange(Location location) {
LatLng loc = new LatLng(location.getLatitude(), location.getLongitude());
double longitude = location.getLongitude();
double latitude = location.getLatitude();
Marker marker;
marker = map.addMarker(new MarkerOptions().position(loc));
map.animateCamera(CameraUpdateFactory.newLatLngZoom(loc, 16.0f));
locationText.setText("You are at [" + longitude + " ; " + latitude + " ]");
//get current address by invoke an AsyncTask object
new GetAddressTask(LocationActivity.this).execute(String.valueOf(latitude), String.valueOf(longitude));
// getCompleteAddressString(longitude,latitude);
}
};
}
public void callBackDataFromAsyncTask(String address) {
addressText.setText(address);
}
/* @SuppressLint("LongLogTag")
private String getCompleteAddressString(double LATITUDE, double LONGITUDE) {
String strAdd = "";
Geocoder geocoder = new Geocoder(this, Locale.getDefault());
try {
List<Address> addresses = geocoder.getFromLocation(LATITUDE, LONGITUDE, 1);
if (addresses != null) {
Address returnedAddress = addresses.get(0);
StringBuilder strReturnedAddress = new StringBuilder("Address:");
for (int i = 0; i < returnedAddress.getMaxAddressLineIndex(); i++) {
strReturnedAddress.append(returnedAddress.getAddressLine(i)).append("\n");
}
strAdd = strReturnedAddress.toString();
addressText.setText(strAdd);
Log.w("My Current loction address", "" + strReturnedAddress.toString());
} else {
Log.w("My Current loction address", "No Address returned!");
}
} catch (Exception e) {
e.printStackTrace();
Log.w("My Current loction address", "Canont get Address!");
}
return strAdd;
} */
}
//getaddress
public class GetAddressTask extends AsyncTask<String, Void, String> {
private LocationActivity activity;
public GetAddressTask(LocationActivity activity) {
super();
this.activity = activity;
}
@Override
protected String doInBackground(String... params) {
Geocoder geocoder;
List<Address> addresses;
geocoder = new Geocoder(activity, Locale.getDefault());
try {
addresses = geocoder.getFromLocation(Double.parseDouble(params[0]), Double.parseDouble(params[1]), 1);
//get current Street name
String address = addresses.get(0).getAddressLine(0);
//get current province/City
String province = addresses.get(0).getAdminArea();
//get country
String country = addresses.get(0).getCountryName();
//get postal code
String postalCode = addresses.get(0).getPostalCode();
//get place Name
String knownName = addresses.get(0).getFeatureName(); // Only if available else return NULL
return "Street: " + address + "\n" + "City/Province: " + province + "\nCountry: " + country
+ "\nPostal CODE: " + postalCode + "\n" + "Place Name: " + knownName;
} catch (IOException ex) {
ex.printStackTrace();
return "IOE EXCEPTION";
} catch (IllegalArgumentException ex) {
ex.printStackTrace();
return "IllegalArgument Exception";
}
}
/**
* When the task finishes, onPostExecute() call back data to Activity UI and displays the address.
* @param address
*/
@Override
protected void onPostExecute(String address) {
// Call back Data and Display the current address in the UI
activity.callBackDataFromAsyncTask(address);
}
}
答案 0 :(得分：0)
您可以使用Double.toString()将double转换为String。或者，您可以使用+：
"" + latitude
如果您需要更多控制输出，例如要显示的小数位数，可以使用String.format()。
答案 1 :(得分：0)
public static void getAddressFromLocation(final double latitude, final double longitude,
final Context context, final Handler handler) {
Thread thread = new Thread() {
@Override
public void run() {
Geocoder geocoder = new Geocoder(context, Locale.getDefault());
String result = null;
try {
List<Address> addressList = geocoder.getFromLocation(
latitude, longitude, 1);
if (addressList != null && addressList.size() > 0) {
Address address = addressList.get(0);
StringBuilder sb = new StringBuilder();
for (int i = 0; i < address.getMaxAddressLineIndex(); i++) {
sb.append(address.getAddressLine(i)).append("\n");
}
sb.append(address.getLocality()).append("\n");
sb.append(address.getPostalCode()).append("\n");
sb.append(address.getCountryName());
result = sb.toString();
}
} catch (IOException e) {
Log.e(TAG, "Unable connect to Geocoder", e);
} finally {
Message message = Message.obtain();
message.setTarget(handler);
if (result != null) {
message.what = 1;
Bundle bundle = new Bundle();
result = "Latitude: " + latitude + " Longitude: " + longitude +
"\n\nAddress:\n" + result;
bundle.putString("address", result);
message.setData(bundle);
} else {
message.what = 1;
Bundle bundle = new Bundle();
result = "Latitude: " + latitude + " Longitude: " + longitude +
"\n Unable to get address for this lat-long.";
bundle.putString("address", result);
message.setData(bundle);
}
message.sendToTarget();
}
}
};
thread.start();
}
更多信息请查看以下链接： - http://javapapers.com/android/android-get-address-with-street-name-city-for-location-with-geocoding/
对你有帮助