in the following code does not display the marker.This code I have made with previews android studio editions and there was no problem with tracking but now there is.I want to make a google map with tracking tab and for this reason I think can't use activity but only fragment.Anyone knows how it can be done?
public class Tab2Map extends Fragment implements OnMapReadyCallback {
GoogleMap mGoogleMap;
MapView mMapView;
View mView;
public Tab2Map() {
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
mView = inflater.inflate(R.layout.fragment_tab2, container, false);
return mView;
}
#Override
public void onViewCreated(View view,Bundle savedInstanceState){
super.onViewCreated(view,savedInstanceState);
mMapView=(MapView) mView.findViewById(R.id.map);
if(mMapView != null){
mMapView.onCreate(null);
mMapView.onResume();
mMapView.getMapAsync(this);
}
}
#Override
public void onMapReady(GoogleMap googleMap) {
MapsInitializer.initialize(getContext());
mGoogleMap = googleMap;
if (ActivityCompat.checkSelfPermission(this.getActivity(), Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this.getActivity(), Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
return;
}
mGoogleMap.setMyLocationEnabled(true);
LocationManager locationManager = (LocationManager)getActivity().getSystemService(Context.LOCATION_SERVICE);
if (ActivityCompat.checkSelfPermission(getContext(), Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(getContext(), Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
return;
}
Location location = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
LocationListener locationListener = new LocationListener() {
public void onLocationChanged(Location location) {
LatLng latlng = new LatLng(location.getLatitude(), location.getLongitude());
mGoogleMap.addMarker(new MarkerOptions().position(latlng).title("Current Location").snippet(latlng.toString()));
CameraPosition position=CameraPosition.builder().target(latlng).zoom(16).bearing(0).build();
mGoogleMap.moveCamera(CameraUpdateFactory.newCameraPosition(position));
}
#Override
public void onStatusChanged(String provider, int status, Bundle extras) {
}
#Override
public void onProviderEnabled(String provider) {
}
#Override
public void onProviderDisabled(String provider) {
}
};
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 5, 15, locationListener);
}
}
fragment_tab2.xml
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/frameLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".Tab2Map">
<com.google.android.gms.maps.MapView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/map"/>
</android.support.constraint.ConstraintLayout>
Related
I can't resolve this problem. I trying to create Fragment with a map and I have this done. When I add static Long, Lat value the map show this o a map, But when I trying to make it automatic with getting localization in runnable the application just open the map and don't show specific LongLand values.
How to do this?
For getting long and late I'm using LocalizationManager, of course, I add permissions in manifest and also check runtime
public class LocalizationFragment extends Fragment implements OnMapReadyCallback {
private GoogleMap map;
MapView mapView;
View mview;
private double latitude, longtitude;
private Handler handler;
private Runnable runnable;
public LocalizationFragment() {
// Required empty public constructor
}
#Override
public void onCreate(#Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
mview = inflater.inflate(R.layout.fragment_localization, container, false);
handler = new Handler();
getLocation();
if (ContextCompat.checkSelfPermission(getContext(), android.Manifest.permission.CAMERA)
!= PackageManager.PERMISSION_GRANTED) {
ActivityCompat.requestPermissions(getActivity(), new String[]{Manifest.permission.ACCESS_COARSE_LOCATION}, 13);
}
if (ContextCompat.checkSelfPermission(getContext(), android.Manifest.permission.CAMERA)
!= PackageManager.PERMISSION_GRANTED) {
ActivityCompat.requestPermissions(getActivity(), new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, 11);
}
return mview;
}
#OnClick(R.id.button)
public void buttonStart() {
getLocation();
}
#Override
public void onViewCreated(View view, #Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
mapView = (MapView) mview.findViewById(R.id.mapView);
if (mapView != null) {
mapView.onCreate(null);
mapView.onResume();
mapView.getMapAsync(this);
}
}
private void getLocation() {
LocationManager locationManager = (LocationManager) getContext().getSystemService(Context.LOCATION_SERVICE);
LocationListener locationListener = new LocationListener() {
#Override
public void onStatusChanged(String provider, int status, Bundle extras) {
// TODO Auto-generated method stub
}
#Override
public void onProviderEnabled(String provider) {
// TODO Auto-generated method stub
}
#Override
public void onProviderDisabled(String provider) {
// TODO Auto-generated method stub
}
#Override
public void onLocationChanged(Location location) {
// TODO Auto-generated method stub
latitude = location.getLatitude();
longtitude = location.getLongitude();
}
};
if (ActivityCompat.checkSelfPermission(getContext(), Manifest.permission.ACCESS_FINE_LOCATION)
!= PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission
(getContext(), Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
return;
}
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, locationListener);
}
#Override
public void onMapReady(final GoogleMap googleMap) {
MapsInitializer.initialize(getContext());
map = googleMap;
googleMap.setMapType(GoogleMap.MAP_TYPE_NORMAL);
runnable = new Runnable() {
#Override
public void run() {
getLocation();
googleMap.addMarker(new MarkerOptions().position(new LatLng(latitude, longtitude)).title("Statue").snippet("Something"));
CameraPosition liberty = CameraPosition.builder().target(new LatLng(latitude, longtitude)).zoom(15).bearing(0).tilt(45).build();
googleMap.moveCamera(CameraUpdateFactory.newCameraPosition(liberty));
handler.postDelayed(this, 5000);
}
};
}
}
You need to add markers form the main thread.add this to your runnable.
runOnUiThread(new Runnable() {
#Override
public void run() {
googleMap.addMarker(new MarkerOptions().position(new LatLng(latitude, longtitude)).title("Statue").snippet("Something"));
}
});
I think this problem come from synchronize data. If you got location after add marker, it is meaningless, you get no location, and you have no marker on map, try to move action add marker into onLocationChanged
I managed to implement a TabLayout. Within one of the tabs is a Google Maps Fragment. I want to ask permission to access the user's location and then place a marker on the current location. As of right now, the dialog box does not show up and I do not know why. Can anyone help me?
public class MapsFragment extends Fragment implements OnMapReadyCallback{
GoogleMap mGoogleMap;
MapView mMapView;
View mView;
LocationManager locationManager;
static final int REQUEST_LOCATION = 1;
public MapsFragment() {
// Required empty public constructor
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
mView = inflater.inflate(R.layout.fragment_maps,container,false);
return mView;
}
#Override
public void onViewCreated(View view, Bundle savedInstanceState){
super.onViewCreated(view, savedInstanceState);
mMapView = (MapView) mView.findViewById(R.id.googleMap);
if(mMapView != null){
mMapView.onCreate(null);
mMapView.onResume();
mMapView.getMapAsync(this);
}
}
#Override
public void onMapReady(GoogleMap googleMap) {
mGoogleMap = googleMap;
googleMap.setMapType(GoogleMap.MAP_TYPE_NORMAL);
//Initialize Google PLay Services
if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.M){
if(ContextCompat.checkSelfPermission(getContext(),
Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED){
//Location Permission is gratned
MapsInitializer.initialize(getContext());
mGoogleMap.setMyLocationEnabled(true);
}
}
googleMap.addMarker(new MarkerOptions().position(new LatLng(36.652527, -121.797277)).title("CSUMB"));
CameraPosition CSUMB = CameraPosition.builder().target(new LatLng(36.6538, -121.797277)).zoom(16).bearing(0).tilt(45).build();
googleMap.moveCamera(CameraUpdateFactory.newCameraPosition(CSUMB));
}
void getLocation(){
locationManager = (LocationManager)getActivity()
.getSystemService(Context.LOCATION_SERVICE);
getLocation();
if(ActivityCompat.checkSelfPermission(getContext(), Manifest.permission.ACCESS_FINE_LOCATION)
!= PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(getContext(),
Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED){
}else{
Location location = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
if(location!= null){
double latti = location.getLatitude();
double longi = location.getLongitude();
Toast.makeText(getActivity(),"Location is " + String.valueOf(latti) + ", " + String.valueOf(longi),Toast.LENGTH_LONG);
Log.e("Maps Fragment", "Location is: " + String.valueOf(latti) + ", " + String.valueOf(longi));
}
else{
Log.e("Maps fragment", "Unable to find current location.");
}
}
}
#Override
public void onRequestPermissionsResult(int requestCode, #NonNull String[] permissions, #NonNull int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
switch (requestCode) {
case REQUEST_LOCATION:
getLocation();
break;
}
}
#Override
public void onResume() {
super.onResume();
mMapView.onResume();
}
#Override
public void onPause() {
super.onPause();
mMapView.onPause();
}
#Override
public void onDestroy() {
super.onDestroy();
mMapView.onDestroy();
}
#Override
public void onLowMemory() {
super.onLowMemory();
mMapView.onLowMemory();
}
}
This is very close to my other answer here, however, that answer doesn't explain how to do it using a ViewPager with a TabLayout.
First, the piece that sets this apart from the other answer, you'll need to keep a reference to the current Fragment in the FragmentPagerAdapter using the instantiateItem() override.
Also, note that the onRequestPermissionsResult() method is needed here in the Activity in order to route the user's permission request response to the Fragment.
Here is the full Activity code:
public class MainActivity extends AppCompatActivity {
ViewPager viewPager;
PagerAdapter pagerAdapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
// Get the ViewPager and set it's PagerAdapter so that it can display items
viewPager = (ViewPager) findViewById(R.id.viewpager);
pagerAdapter = new PagerAdapter(getSupportFragmentManager(), MainActivity.this);
viewPager.setAdapter(pagerAdapter);
// Give the TabLayout the ViewPager
TabLayout tabLayout = (TabLayout) findViewById(R.id.tab_layout);
tabLayout.setupWithViewPager(viewPager);
// Iterate over all tabs and set the custom view
for (int i = 0; i < tabLayout.getTabCount(); i++) {
TabLayout.Tab tab = tabLayout.getTabAt(i);
tab.setCustomView(pagerAdapter.getTabView(i));
}
}
class PagerAdapter extends FragmentPagerAdapter {
String tabTitles[] = new String[] { "Tab One", "Tab Two", "Tab Three", };
public Fragment[] fragments = new Fragment[tabTitles.length];
Context context;
public PagerAdapter(FragmentManager fm, Context context) {
super(fm);
this.context = context;
}
#Override
public int getCount() {
return tabTitles.length;
}
#Override
public Fragment getItem(int position) {
switch (position) {
case 0:
return new MapFragment();
case 1:
return new BlankFragment();
case 2:
return new BlankFragment();
}
return null;
}
#Override
public CharSequence getPageTitle(int position) {
// Generate title based on item position
return tabTitles[position];
}
public View getTabView(int position) {
View tab = LayoutInflater.from(MainActivity.this).inflate(R.layout.custom_tab, null);
TextView tv = (TextView) tab.findViewById(R.id.custom_text);
tv.setText(tabTitles[position]);
return tab;
}
//This populates your Fragment reference array:
#Override
public Object instantiateItem(ViewGroup container, int position) {
Fragment createdFragment = (Fragment) super.instantiateItem(container, position);
fragments[position] = createdFragment;
return createdFragment;
}
}
#Override
public void onRequestPermissionsResult(int requestCode,
String permissions[], int[] grantResults) {
if (requestCode == MapFragment.MY_PERMISSIONS_REQUEST_LOCATION){
MapFragment mapFragment = (MapFragment) pagerAdapter.fragments[0];
if (mapFragment != null) {
mapFragment.onRequestPermissionsResult(requestCode, permissions, grantResults);
}
}
else {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
}
}
}
activity_main.xml:
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:context=".MainActivity">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/AppTheme.AppBarOverlay"
android:elevation="6dp">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light"
android:elevation="0dp" />
<android.support.design.widget.TabLayout
android:id="#+id/tab_layout"
app:tabMode="fixed"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/toolbar"
android:background="?attr/colorPrimary"
android:elevation="0dp"
app:tabTextColor="#d3d3d3"
app:tabSelectedTextColor="#ffffff"
app:tabIndicatorColor="#ff00ff"
android:minHeight="?attr/actionBarSize"
/>
</android.support.design.widget.AppBarLayout>
<android.support.v4.view.ViewPager
android:id="#+id/viewpager"
android:layout_width="match_parent"
android:layout_height="fill_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
/>
</android.support.design.widget.CoordinatorLayout>
custom_tab.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="#+id/custom_text"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:background="?attr/selectableItemBackground"
android:gravity="center"
android:textSize="16dip"
android:textColor="#ffffff"
android:maxLines="1"
/>
</LinearLayout>
For the Map Fragment, use essentially the same code as the other answer:
public class MapFragment extends SupportMapFragment
implements OnMapReadyCallback,
GoogleApiClient.ConnectionCallbacks,
GoogleApiClient.OnConnectionFailedListener,
LocationListener {
GoogleMap mGoogleMap;
LocationRequest mLocationRequest;
GoogleApiClient mGoogleApiClient;
Location mLastLocation;
Marker mCurrLocationMarker;
#Override
public void onResume() {
super.onResume();
setUpMapIfNeeded();
}
private void setUpMapIfNeeded() {
if (mGoogleMap == null) {
getMapAsync(this);
}
}
#Override
public void onPause() {
super.onPause();
//stop location updates when Activity is no longer active
if (mGoogleApiClient != null) {
LocationServices.FusedLocationApi.removeLocationUpdates(mGoogleApiClient, this);
}
}
#Override
public void onMapReady(GoogleMap googleMap)
{
mGoogleMap=googleMap;
mGoogleMap.setMapType(GoogleMap.MAP_TYPE_HYBRID);
//Initialize Google Play Services
if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
if (ContextCompat.checkSelfPermission(getActivity(),
Manifest.permission.ACCESS_FINE_LOCATION)
== PackageManager.PERMISSION_GRANTED) {
//Location Permission already granted
buildGoogleApiClient();
mGoogleMap.setMyLocationEnabled(true);
} else {
//Request Location Permission
checkLocationPermission();
}
}
else {
buildGoogleApiClient();
mGoogleMap.setMyLocationEnabled(true);
}
}
protected synchronized void buildGoogleApiClient() {
mGoogleApiClient = new GoogleApiClient.Builder(getActivity())
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build();
mGoogleApiClient.connect();
}
#Override
public void onConnected(Bundle bundle) {
mLocationRequest = new LocationRequest();
mLocationRequest.setInterval(1000);
mLocationRequest.setFastestInterval(1000);
mLocationRequest.setPriority(LocationRequest.PRIORITY_BALANCED_POWER_ACCURACY);
if (ContextCompat.checkSelfPermission(getActivity(),
Manifest.permission.ACCESS_FINE_LOCATION)
== PackageManager.PERMISSION_GRANTED) {
LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, mLocationRequest, this);
}
}
#Override
public void onConnectionSuspended(int i) {}
#Override
public void onConnectionFailed(ConnectionResult connectionResult) {}
#Override
public void onLocationChanged(Location location)
{
mLastLocation = location;
if (mCurrLocationMarker != null) {
mCurrLocationMarker.remove();
}
//Place current location marker
LatLng latLng = new LatLng(location.getLatitude(), location.getLongitude());
MarkerOptions markerOptions = new MarkerOptions();
markerOptions.position(latLng);
markerOptions.title("Current Position");
markerOptions.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_MAGENTA));
mCurrLocationMarker = mGoogleMap.addMarker(markerOptions);
//move map camera
mGoogleMap.moveCamera(CameraUpdateFactory.newLatLng(latLng));
mGoogleMap.animateCamera(CameraUpdateFactory.zoomTo(11));
//optionally, stop location updates if only current location is needed
if (mGoogleApiClient != null) {
LocationServices.FusedLocationApi.removeLocationUpdates(mGoogleApiClient, this);
}
}
public static final int MY_PERMISSIONS_REQUEST_LOCATION = 99;
private void checkLocationPermission() {
if (ContextCompat.checkSelfPermission(getActivity(), Manifest.permission.ACCESS_FINE_LOCATION)
!= PackageManager.PERMISSION_GRANTED) {
// Should we show an explanation?
if (ActivityCompat.shouldShowRequestPermissionRationale(getActivity(),
Manifest.permission.ACCESS_FINE_LOCATION)) {
// Show an explanation to the user *asynchronously* -- don't block
// this thread waiting for the user's response! After the user
// sees the explanation, try again to request the permission.
new AlertDialog.Builder(getActivity())
.setTitle("Location Permission Needed")
.setMessage("This app needs the Location permission, please accept to use location functionality")
.setPositiveButton("OK", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialogInterface, int i) {
//Prompt the user once explanation has been shown
ActivityCompat.requestPermissions(getActivity(),
new String[]{Manifest.permission.ACCESS_FINE_LOCATION},
MY_PERMISSIONS_REQUEST_LOCATION );
}
})
.create()
.show();
} else {
// No explanation needed, we can request the permission.
ActivityCompat.requestPermissions(getActivity(),
new String[]{Manifest.permission.ACCESS_FINE_LOCATION},
MY_PERMISSIONS_REQUEST_LOCATION );
}
}
}
#Override
public void onRequestPermissionsResult(int requestCode,
String permissions[], int[] grantResults) {
switch (requestCode) {
case MY_PERMISSIONS_REQUEST_LOCATION: {
// If request is cancelled, the result arrays are empty.
if (grantResults.length > 0
&& grantResults[0] == PackageManager.PERMISSION_GRANTED) {
// permission was granted, yay! Do the
// location-related task you need to do.
if (ContextCompat.checkSelfPermission(getActivity(),
Manifest.permission.ACCESS_FINE_LOCATION)
== PackageManager.PERMISSION_GRANTED) {
if (mGoogleApiClient == null) {
buildGoogleApiClient();
}
mGoogleMap.setMyLocationEnabled(true);
}
} else {
// permission denied, boo! Disable the
// functionality that depends on this permission.
Toast.makeText(getActivity(), "permission denied", Toast.LENGTH_LONG).show();
}
return;
}
// other 'case' lines to check for other
// permissions this app might request
}
}
}
Result
First, the location permission prompt:
Once the user has accepted the permission at runtime, show the user's current location:
MapFragment.java
public class MapFragment extends SupportMapFragment implements OnMapReadyCallback{
private GoogleMap googleMap;
private Context context;
public MapFragment(){
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
super.onCreateView(inflater, container, savedInstanceState);
View root = inflater.inflate(R.layout.item_individual_warehouse, null, false);
onMapReady(googleMap);
return root;
}
private void initializeMap(){
if(googleMap == null) {
SupportMapFragment fm =(SupportMapFragment)getChildFragmentManager().findFragmentById(R.id.map);
fm.getMapAsync(this);
if(googleMap == null){
Toast.makeText(context,"Sorry! We are unable to load maps", Toast.LENGTH_SHORT).show();
}
}
}
#Override
public void onMapReady(GoogleMap gm) {
googleMap = gm;
initializeMap();
}
}
In my oncreate method in RetrieveIndividualWarehouseSales.java
public void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.item_individual_warehouse);
new RetrieveItem().execute();
MapFragment mf = new MapFragment();
mf.onMapReady(googleMap);
}
item_individual_warehouse.xml
<FrameLayout
android:id="#+id/map"
android:name="com.google.android.gms.maps.SupportMapFragment"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/sales_location"/>
Error is:
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void com.google.android.gms.maps.SupportMapFragment.getMapAsync(com.google.android.gms.maps.OnMapReadyCallback)' on a null object reference
I am trying to instantiate the MapFragment object in RetrieveIndividualWarehouseSales.java so that I can display the map in item_individual_warehouse.xml which contains a bunch of textviews and one framelayout which is meant for map.
Use this.
public class MapLocationActivity extends AppCompatActivity
implements OnMapReadyCallback,
GoogleApiClient.ConnectionCallbacks,
GoogleApiClient.OnConnectionFailedListener,
LocationListener {
GoogleMap mGoogleMap;
SupportMapFragment mapFrag;
LocationRequest mLocationRequest;
GoogleApiClient mGoogleApiClient;
Location mLastLocation;
Marker mCurrLocationMarker;
#Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
checkLocationPermission();
}
mapFrag = (SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map);
mapFrag.getMapAsync(this);
}
#Override
public void onPause() {
super.onPause();
//stop location updates when Activity is no longer active
if (mGoogleApiClient != null) {
LocationServices.FusedLocationApi.removeLocationUpdates(mGoogleApiClient, this);
}
}
#Override
public void onMapReady(GoogleMap googleMap)
{
mGoogleMap=googleMap;
mGoogleMap.setMapType(GoogleMap.MAP_TYPE_HYBRID);
//Initialize Google Play Services
if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
if (ContextCompat.checkSelfPermission(this,
Manifest.permission.ACCESS_FINE_LOCATION)
== PackageManager.PERMISSION_GRANTED) {
buildGoogleApiClient();
mGoogleMap.setMyLocationEnabled(true);
}
}
else {
buildGoogleApiClient();
mGoogleMap.setMyLocationEnabled(true);
}
}
protected synchronized void buildGoogleApiClient() {
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build();
mGoogleApiClient.connect();
}
#Override
public void onConnected(Bundle bundle) {
mLocationRequest = new LocationRequest();
mLocationRequest.setInterval(1000);
mLocationRequest.setFastestInterval(1000);
mLocationRequest.setPriority(LocationRequest.PRIORITY_BALANCED_POWER_ACCURACY);
if (ContextCompat.checkSelfPermission(this,
Manifest.permission.ACCESS_FINE_LOCATION)
== PackageManager.PERMISSION_GRANTED) {
LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, mLocationRequest, this);
}
}
#Override
public void onConnectionSuspended(int i) {}
#Override
public void onConnectionFailed(ConnectionResult connectionResult) {}
#Override
public void onLocationChanged(Location location)
{
mLastLocation = location;
if (mCurrLocationMarker != null) {
mCurrLocationMarker.remove();
}
//Place current location marker
LatLng latLng = new LatLng(location.getLatitude(), location.getLongitude());
MarkerOptions markerOptions = new MarkerOptions();
markerOptions.position(latLng);
markerOptions.title("Current Position");
markerOptions.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_MAGENTA));
mCurrLocationMarker = mGoogleMap.addMarker(markerOptions);
//move map camera
mGoogleMap.moveCamera(CameraUpdateFactory.newLatLng(latLng));
mGoogleMap.animateCamera(CameraUpdateFactory.zoomTo(11));
//stop location updates
if (mGoogleApiClient != null) {
LocationServices.FusedLocationApi.removeLocationUpdates(mGoogleApiClient, this);
}
}
public static final int MY_PERMISSIONS_REQUEST_LOCATION = 99;
public boolean checkLocationPermission(){
if (ContextCompat.checkSelfPermission(this,
Manifest.permission.ACCESS_FINE_LOCATION)
!= PackageManager.PERMISSION_GRANTED) {
// Should we show an explanation?
if (ActivityCompat.shouldShowRequestPermissionRationale(this,
Manifest.permission.ACCESS_FINE_LOCATION)) {
//TODO:
// Show an expanation to the user *asynchronously* -- don't block
// this thread waiting for the user's response! After the user
// sees the explanation, try again to request the permission.
//Prompt the user once explanation has been shown
//(just doing it here for now, note that with this code, no explanation is shown)
ActivityCompat.requestPermissions(this,
new String[]{Manifest.permission.ACCESS_FINE_LOCATION},
MY_PERMISSIONS_REQUEST_LOCATION);
} else {
// No explanation needed, we can request the permission.
ActivityCompat.requestPermissions(this,
new String[]{Manifest.permission.ACCESS_FINE_LOCATION},
MY_PERMISSIONS_REQUEST_LOCATION);
}
return false;
} else {
return true;
}
}
#Override
public void onRequestPermissionsResult(int requestCode,
String permissions[], int[] grantResults) {
switch (requestCode) {
case MY_PERMISSIONS_REQUEST_LOCATION: {
// If request is cancelled, the result arrays are empty.
if (grantResults.length > 0
&& grantResults[0] == PackageManager.PERMISSION_GRANTED) {
// permission was granted, yay! Do the
// location-related task you need to do.
if (ContextCompat.checkSelfPermission(this,
Manifest.permission.ACCESS_FINE_LOCATION)
== PackageManager.PERMISSION_GRANTED) {
if (mGoogleApiClient == null) {
buildGoogleApiClient();
}
mGoogleMap.setMyLocationEnabled(true);
}
} else {
// permission denied, boo! Disable the
// functionality that depends on this permission.
Toast.makeText(this, "permission denied", Toast.LENGTH_LONG).show();
}
return;
}
// other 'case' lines to check for other
// permissions this app might request
}
}
}
Every Time I open the App it says unfortunately your App has been stopped.
I am not able to find the bug
public class MapsActivity extends FragmentActivity implements OnMapReadyCallback {
private GoogleMap mMap;
protected LocationManager locationManager;
TextView tv1;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_maps);
// Obtain the SupportMapFragment and get notified when the map is ready to be used.
SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
.findFragmentById(R.id.map);
mapFragment.getMapAsync(this);
locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
return;
}
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 3000, 0, (android.location.LocationListener) mLocationListener);
}
private final LocationListener mLocationListener = new LocationListener() {
#Override
public void onLocationChanged(final Location location) {
//your code here
tv1 = (TextView) findViewById(R.id.tv1);
tv1.setText("Latitude:" + location.getLatitude() + ", Longitude:" + location.getLongitude());
}
};
#Override
public void onMapReady(GoogleMap googleMap) {
mMap = googleMap;
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
return;
}
mMap.setMyLocationEnabled(true);
}
}
Here is the log Error -
java.lang.RuntimeException: Unable to start activity
ComponentInfo{manishsaran.maper/manishsaran.maper.MapsActivity}:
java.lang.ClassCastException: manishsaran.maper.MapsActivity$1 cannot
be cast to android.location.LocationListener
Issue is your LocationListener you should import it through
import android.location.LocationListener;
and Implement its all method like this:
private final LocationListener mLocationListener = new LocationListener() {
#Override
public void onLocationChanged(final Location location) {
//your code here
tv1 = (TextView) findViewById(R.id.tv1);
tv1.setText("Latitude:" + location.getLatitude() + ", Longitude:" + location.getLongitude());
}
#Override
public void onStatusChanged(String s, int i, Bundle bundle) {
}
#Override
public void onProviderEnabled(String s) {
}
#Override
public void onProviderDisabled(String s) {
}
};
And there is no need of casting your locationListener :
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 3000, 0, mLocationListener);
I have a big problem with fused location provider api , all the methods I ovveride (for example in onConnected I get the last location known) are working except OnLocation change I don't know really what's the problem because I use the same code in other fragment with MapView and it works without any problem.
This is my code :
public class MissionsFragment extends Fragment implements
SwipeRefreshLayout.OnRefreshListener,
GoogleApiClient.ConnectionCallbacks,
GoogleApiClient.OnConnectionFailedListener,
LocationListener{
LocationRequest mLocationRequest;
GoogleApiClient mGoogleApiClient;
LatLng latLng;
View view;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
view = inflater.inflate(R.layout.fragment_jobs, container, false);
ButterKnife.bind(this, view);
return view;
}
#Override
public void onActivityCreated(#Nullable Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
buildGoogleApiClient();
mGoogleApiClient.connect();
}
#Override
public void onConnected(#Nullable Bundle bundle) {
Location mLastLocation = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient);
if (mLastLocation != null) {
latLng = new LatLng(mLastLocation.getLatitude(), mLastLocation.getLongitude());
Toast.makeText(getActivity(), latLng.toString(), Toast.LENGTH_SHORT).show();
}
mLocationRequest = new LocationRequest();
mLocationRequest.setInterval(2000);
mLocationRequest.setFastestInterval(1000);
mLocationRequest.setPriority(LocationRequest.PRIORITY_BALANCED_POWER_ACCURACY);
//mLocationRequest.setSmallestDisplacement(0.1F); //1/10 meter
LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, mLocationRequest, this);
}
#Override
public void onConnectionSuspended(int i) {
}
#Override
public void onLocationChanged(Location location) {
latLng = new LatLng(location.getLatitude(), location.getLongitude());
Toast.makeText(getActivity(), latLng.toString(), Toast.LENGTH_SHORT).show();
}
#Override
public void onConnectionFailed(#NonNull ConnectionResult connectionResult) {
}
protected synchronized void buildGoogleApiClient() {
mGoogleApiClient = new GoogleApiClient.Builder(getActivity())
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build();
}
#Override
public void onPause() {
super.onPause();
if (mGoogleApiClient != null) {
LocationServices.FusedLocationApi.removeLocationUpdates(mGoogleApiClient, this);
}
}
}
is it necessary to get the location if we use MapView only or I should update soemthing in my current code ?