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現在の場所を取得できません。これは私のコードです：アンドロイドスタジオの現在の場所を取得できません
マーカーは他の場所に表示されていますが、現在の位置に表示されていません。 私のXMLは次のようになります。
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.example.app.MainActivity"
tools:ignore="MergeRootFrame" >
<LinearLayout
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<fragment
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:name="com.google.android.gms.maps.MapFragment"
android:id="@+id/map" />
</LinearLayout>
</FrameLayout>
そして、これは私のクラスである：
public class MapsActivity extends AppCompatActivity implements LocationListener {
private GoogleMap map;
String strAdd;
Location location;
double latitude, longitude;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_maps);
map = ((MapFragment) getFragmentManager().findFragmentById(R.id.map)).getMap();
map.setMapType(GoogleMap.MAP_TYPE_NORMAL);
map.setMyLocationEnabled(true);
map.getUiSettings().setZoomControlsEnabled(true);
map.getUiSettings().setCompassEnabled(true);
map.getUiSettings().setMyLocationButtonEnabled(true);
map.getUiSettings().setZoomGesturesEnabled(true);
map.getUiSettings().setRotateGesturesEnabled(true);
LocationManager lm = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
List<String> providers = lm.getProviders(true);
Location l = null;
for (int i = 0; i < providers.size(); i++) {
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.
l = lm.getLastKnownLocation(providers.get(i));
return;
}
if (l != null) {
latitude = l.getLatitude();
longitude = l.getLongitude();
strAdd = getCompleteAddressString(latitude, longitude);
break;
}
}
if (map != null) {
MarkerOptions marker = new MarkerOptions().position(
new LatLng(latitude, longitude)).title("Hello Maps").snippet("Discription");
marker.icon(BitmapDescriptorFactory
.defaultMarker(BitmapDescriptorFactory.HUE_GREEN));
// Moving Camera to a Location with animation
CameraPosition cameraPosition = new CameraPosition.Builder()
.target(new LatLng(latitude, longitude)).zoom(12).build();
map.animateCamera(CameraUpdateFactory
.newCameraPosition(cameraPosition));
map.addMarker(marker);
}
}
private String getCompleteAddressString(double LATITUDE, double LONGITUDE) {
String strAdd = "";
Geocoder geocoder = new Geocoder(this, Locale.getDefault());
try {
List<android.location.Address> addresses = geocoder
.getFromLocation(LATITUDE, LONGITUDE, 1);
if (addresses != null) {
android.location.Address returnedAddress = addresses.get(0);
StringBuilder strReturnedAddress = new StringBuilder("");
for (int i = 0; i < returnedAddress.getMaxAddressLineIndex(); i++) {
strReturnedAddress
.append(returnedAddress.getAddressLine(i)).append(
"\n");
}
strAdd = strReturnedAddress.toString();
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;
}
@Override
public void onLocationChanged(Location location) {
if (map != null)
{
drawMarker(location);
}
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
}
@Override
public void onProviderEnabled(String provider) {
}
@Override
public void onProviderDisabled(String provider) {
}
private void drawMarker(Location location){
map.clear();
// convert the location object to a LatLng object that can be used by the map API
LatLng currentPosition = new LatLng(location.getLatitude(), location.getLongitude());
// zoom to the current location
map.animateCamera(CameraUpdateFactory.newLatLngZoom(currentPosition,16));
// add a marker to the map indicating our current position
map.addMarker(new MarkerOptions()
.position(currentPosition).title("Marker")
// .icon(BitmapDescriptorFactory.fromResource(R.drawable.blue_point))
.snippet("Lat:" + location.getLatitude() + "Lng:" + location.getLongitude()));
}
}
私は私が日を過ごす私が欠けていた場合は、pls help.Your種類のサポートがappreciated.Sinceになります知っているdidnot frmこれを克服しますが、使用しません。