I managed to incorporate Google Maps API within a TabLayout but it has 2 problems. One is that the app asks for the users location immediately and one the permission is granted it does not show the new updated location. Can anyone help me out?
MainActivity
public class MainActivity extends AppCompatActivity
implements NavigationView.OnNavigationItemSelectedListener{
private Toolbar toolbar;
private TabLayout tabLayout;
private ViewPager viewPager;
private PagerAdapter pagerAdapter;
private DrawerLayout drawerLayout;
//private ViewPagerAdapter viewPagerAdapter;
private String[] pageTitle = {"myPlanner", "News", "Parking"};
private String studyRooms = "http://library2.csumb.edu/mrbs/mobilenow.php";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
drawerLayout = (DrawerLayout) findViewById(R.id.drawerLayout);
setSupportActionBar(toolbar);
//create default navigation drawer toggle
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(this, drawerLayout, toolbar,
R.string.navigation_drawer_open, R.string.navigation_drawer_close);
drawerLayout.addDrawerListener(toggle);
toggle.syncState();
tabLayout = (TabLayout) findViewById(R.id.tab_layout);
tabLayout.setupWithViewPager(viewPager);
for (int i = 0; i < 3; i++) {
//TabLayout.Tab tab = tabLayout.getTabAt(i);
//tab.setCustomView(pagerAdapter.getTabView(i));
tabLayout.addTab(tabLayout.newTab().setText(pageTitle[i]));
}
//set gravity for tab bar
tabLayout.setTabGravity(TabLayout.GRAVITY_FILL);
//handling navigation view item event
NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
assert navigationView != null;
navigationView.setNavigationItemSelectedListener(this);
viewPager = (ViewPager)findViewById(R.id.view_pager);
pagerAdapter = new PagerAdapter(getSupportFragmentManager(), MainActivity.this);
viewPager.setAdapter(pagerAdapter);
//setting Tab layout (number of Tabs = number of ViewPager pages)
viewPager.addOnPageChangeListener(new TabLayout.TabLayoutOnPageChangeListener(tabLayout));
viewPager.setOffscreenPageLimit(3);
tabLayout.addOnTabSelectedListener(new TabLayout.ViewPagerOnTabSelectedListener(viewPager));
}
class PagerAdapter extends FragmentPagerAdapter{
String tabTitles[] = new String[]{"myPlanner", "News", "Parking"};
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 myPlanner();
case 1:
return new News();
case 2:
return new MapsFragment();
}
return null;
}
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;
}
@Override
public CharSequence getPageTitle(int position){
//Generate title based on item position
return tabTitles[position];
}
@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 == MapsFragment.MY_PERMISSIONS_REQUEST_LOCATION){
MapsFragment mapFragment = (MapsFragment) pagerAdapter.fragments[2];
if(mapFragment != null){
mapFragment.onRequestPermissionsResult(requestCode,permissions,grantResults);
}
}
else{
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
}
}
/*
Method for the navigation Drawer that takes in the id from the navigation drawer
and based on the view, an action will be performed.
*/
@Override
public boolean onNavigationItemSelected(MenuItem item) {
int id = item.getItemId();
if (id == R.id.DinningCommonsItem) {
viewPager.setCurrentItem(0);
} else if (id == R.id.LibraryStudyRooms) {
Uri uri = Uri.parse(studyRooms);
Intent intent = new Intent(Intent.ACTION_VIEW, uri);
startActivity(intent);
// viewPager.setCurrentItem(1);
} else if (id == R.id.MapYourRoute) {
viewPager.setCurrentItem(2);
} else if (id == R.id.CampusPD) {
Intent i = new Intent(Intent.ACTION_DIAL, Uri.parse("tel:" + "18316550268"));
i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(i);
} else if (id == R.id.close) {
finish();
}
drawerLayout.closeDrawer(GravityCompat.START);
return true;
}
@Override
public void onBackPressed() {
assert drawerLayout != null;
if (drawerLayout.isDrawerOpen(GravityCompat.START)) {
drawerLayout.closeDrawer(GravityCompat.START);
} else {
super.onBackPressed();
}
}
}
MapsFragment
public class MapsFragment extends SupportMapFragment implements OnMapReadyCallback,GoogleApiClient.ConnectionCallbacks,
GoogleApiClient.OnConnectionFailedListener, LocationListener{
GoogleMap mGoogleMap;
LocationRequest mLocationRequest;
GoogleApiClient mGoogleApiClient;
Location mLastLocation;
Marker mCurrLocationMarker;
MapView mMapView;
View mView;
LocationManager locationManager;
static final int REQUEST_LOCATION = 1;
@Override
public void onResume() {
super.onResume();
Log.d("MapsFragment", "Inside onResume");
setUpMapIfNeeded();
}
private void setUpMapIfNeeded() {
Log.d("MapsFragment", "Inside setUpMapIfNeeded");
if (mGoogleMap == null) {
getMapAsync(this);
}
}
//This method gets called when the activity's view is obstructed.
@Override
public void onPause() {
super.onPause();
Log.d("MapsFragment", "Inside onPause");
//mMapView.onPause();
//Stop location updates when Activity is no longer active
if(mGoogleApiClient != null){
LocationServices.FusedLocationApi.removeLocationUpdates(mGoogleApiClient,this);
}
}
//Call back method for when map is ready to be used.
@Override
public void onMapReady(GoogleMap googleMap){
Log.d("MapsFragment", "Inside onMapReady");
mGoogleMap = googleMap;
mGoogleMap.setMapType(GoogleMap.MAP_TYPE_NORMAL);
//Initialize Google Play Services
if(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);
}
}
private void buildGoogleApiClient() {
Log.d("MapsFragment", "Inside buildGoogleApiClient");
mGoogleApiClient = new GoogleApiClient.Builder(getActivity())
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build();
mGoogleApiClient.connect();
}
//After calling connect(), this method will be invoked asynch when the
//connect request has successfully completed.
@Override
public void onConnected(@Nullable Bundle bundle) {
Log.d("MapsFragment", "Inside onConnected");
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(@NonNull ConnectionResult connectionResult) {
}
@Override
public void onLocationChanged(Location location) {
Log.d("MapsFragment", "Inside onLocationChanged");
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.zoomBy(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() {
Log.d("MapsFragment", "Inside 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 *asyncly* -- dont 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 dialog, int i) {
//prompt the user once the 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){
Log.d("MapsFragment", "Inside onRequestPermissionsResult");
switch (requestCode){
case MY_PERMISSIONS_REQUEST_LOCATION:{
//If request is cancelled, the results arrays are empty
if(grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED){
//Permission was granted 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{
//permissions were denied. Disable the functionality that depends onthis permission
Toast.makeText(getActivity(), "Permission denied",Toast.LENGTH_LONG).show();
}
return;
}//Other case lines to check for other permissions this app might request
}
}
