So verwenden Sie OnMyLocationButtonKlicken Sie mit Google Play Services

Question

Ich bin neu in der Android-Programmierung. Ich kann die MyLocation-Schaltfläche in meiner Fragmentklasse nicht verwenden, die ein collapsingToolbarLayout verwendet. Ich habe die Mylocation-Schaltfläche mit dieser Codezeile hinzugefügt:

googleMap.setMyLocationEnabled(true); 

las ich die offizielle doc und es sagte:

wenn ein Benutzer auf die Schaltfläche klickt, wird die Kamera die Karte auf den aktuellen Standort des Geräts zentriert, wenn bekannt ist.

Die Schaltfläche erscheint, aber in meinem Fall passiert nichts, wenn ich die Taste drücke.

Wo liege ich falsch?

das ist mein Fragment Klassencode:

public class MapFrag extends Fragment implements OnMapReadyCallback, GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener, GoogleMap.OnMyLocationButtonClickListener { 

private GoogleApiClient mGoogleApiClient; 
private Location mLastLocation; 
private LatLng currentPosition; 

// 
private List<Place> places; 
private RecyclerView recyclerView; 
private LinearLayoutManager layoutManager; 
private RecyclerViewAdapter adapter; 
// 



//imageLoader – our ImageLoader object which we’ll use to download the images 
ImageLoader imageLoader; 


private GoogleMap googleMap; 

private SupportMapFragment map; 

private CollapsingToolbarLayout collapsingToolbarLayout = null; 

private static View rootView; 


// with image 
private static final String ENDPOINT_PLACE = "http://www.mocky.io/v2/xxxxxxxxxxxxxxxx"; 


@Override 
public View onCreateView(LayoutInflater inflater, ViewGroup container, 
         Bundle savedInstanceState) { 


    try { 
     rootView = inflater.inflate(R.layout.fragment_place, container, false); 
    } catch (InflateException e) { 
    /* map is already there, just return view as it is */ 
    } 


    // Create an instance of GoogleAPIClient. 
    if (mGoogleApiClient == null) { 
     mGoogleApiClient = new GoogleApiClient.Builder(getContext()) 
       .addConnectionCallbacks(this) 
       .addOnConnectionFailedListener(this) 
       .addApi(LocationServices.API) 
       .build(); 
    } 


    requestJsonObject(); 



    imageLoader = MySingleton.getInstance(getContext()).getImageLoader(); 


    Toolbar toolbar = (Toolbar) rootView.findViewById(R.id.toolbar); 
    ((AppCompatActivity) getActivity()).setSupportActionBar(toolbar); 
    ActionBar actionBar = ((AppCompatActivity) getActivity()).getSupportActionBar(); 
    actionBar.setDisplayHomeAsUpEnabled(true); 

    collapsingToolbarLayout = (CollapsingToolbarLayout) rootView.findViewById(R.id.collapsing_toolbar); 
    collapsingToolbarLayout.setTitle("Map"); 

    toolbarTextAppernce(); 

    enableMapScrolling(); 


    recyclerView = (RecyclerView) rootView.findViewById(R.id.recycler_view_id); 
    layoutManager = new LinearLayoutManager(getContext()); 
    recyclerView.setLayoutManager(layoutManager); 



    // Inflate the layout for this fragment 
    return rootView; 
} 

@Override 
public void onStart() { 
    mGoogleApiClient.connect(); 
    super.onStart(); 
} 

@Override 
public void onStop() { 
    mGoogleApiClient.disconnect(); 
    super.onStop(); 
} 



private void toolbarTextAppernce() { 
    collapsingToolbarLayout.setCollapsedTitleTextAppearance(R.style.collapsedappbar); 
    collapsingToolbarLayout.setExpandedTitleTextAppearance(R.style.expandedappbar); 
} 


public void setUpMap() { 

    if (googleMap == null) { 
     map = (SupportMapFragment) this.getChildFragmentManager() 
       .findFragmentById(R.id.map); 
     map.getMapAsync(this); 

    } 

} 

/** 
* This method enable the possibility for the user to scroll the map 
*/ 
private void enableMapScrolling() { 
    CoordinatorLayout.LayoutParams params = (CoordinatorLayout.LayoutParams) rootView.findViewById(R.id.app_bar_id).getLayoutParams(); 
    AppBarLayout.Behavior behavior = new AppBarLayout.Behavior(); 
    behavior.setDragCallback(new AppBarLayout.Behavior.DragCallback() { 
     @Override 
     public boolean canDrag(AppBarLayout appBarLayout) { 
      return false; 
     } 
    }); 
    params.setBehavior(behavior); 

} 


/** 
* Manipulates the map once available. 
* This callback is triggered when the map is ready to be used. 
* This is where we can add markers or lines, add listeners or move the camera. In this case, 
* we just add a marker near Sydney, Australia. 
* If Google Play services is not installed on the device, the user will be prompted to install 
* it inside the SupportMapFragment. This method will only be triggered once the user has 
* installed Google Play services and returned to the app. 
*/ 
@Override 
public void onMapReady(GoogleMap googleMap) { 

    this.googleMap = googleMap; 

    if (googleMap != null) { 


     //noinspection MissingPermission 
     googleMap.setMyLocationEnabled(true); 

     googleMap.setOnMyLocationButtonClickListener(this); 

     addMarkers(); 

     //where map start 
     googleMap.moveCamera(CameraUpdateFactory.newLatLngZoom(currentPosition, 15)); 

    } 

} 


/** 
* this method add all coordinete point of the json file with a marker to the map 
*/ 
private void addMarkers() { 

    for (Place place : places) { 

     googleMap.addMarker(new MarkerOptions().position(place.getCoordinates()).title(place.getName().substring(0, 1).toUpperCase() + 
       place.getName().substring(1))); 
    } 

} 


private void requestJsonObject() { 
    StringRequest stringRequest = new StringRequest(Request.Method.GET, ENDPOINT_PLACE, onPostsLoaded, onPostsError); 

    //add request to the queue 
    MySingleton.getInstance(getContext()).addToRequestQueue(stringRequest); 

} 

private final Response.Listener<String> onPostsLoaded = new Response.Listener<String>() { 

    @Override 
    public void onResponse(String response) { 

     Log.d("PLACE FRAGMENT", "Response: " + response); 
     GsonBuilder builder = new GsonBuilder(); 
     Gson jsonPlace = builder.create(); 
     places = new ArrayList<>(); 
     places = Arrays.asList(jsonPlace.fromJson(response, Place[].class)); 

     adapter = new RecyclerViewAdapter(getContext(), places); 
     recyclerView.setAdapter(adapter); 

     setUpMap(); 

    } 
}; 

private final Response.ErrorListener onPostsError = new Response.ErrorListener() { 
    @Override 
    public void onErrorResponse(VolleyError error) { 

     Snackbar snackbar = Snackbar 
       .make(rootView, "No internet connection!", Snackbar.LENGTH_INDEFINITE) 
       .setAction("RETRY", new View.OnClickListener() { 
        @Override 
        public void onClick(View view) { 
         requestJsonObject(); 
        } 
       }); 

     // Changing message text color 
     snackbar.setActionTextColor(Color.RED); 

     // Changing action button text color 
     View sbView = snackbar.getView(); 
     TextView textView = (TextView) sbView.findViewById(android.support.design.R.id.snackbar_text); 
     snackbar.show(); 

    } 
}; 


@Override 
public void onConnected(@Nullable Bundle bundle) { 

    //noinspection MissingPermission 
    mLastLocation = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient); 
    if (mLastLocation != null) { 
     currentPosition = new LatLng(mLastLocation.getLatitude(), mLastLocation.getLongitude()); 

    } 
} 


@Override 
public void onConnectionSuspended(int i) { 

} 

@Override 
public void onConnectionFailed(@NonNull ConnectionResult connectionResult) { 

} 

@Override 
public boolean onMyLocationButtonClick() { 
    Toast.makeText(getActivity(), "BUTTON CLICKED!", Toast.LENGTH_SHORT).show(); 
    return true; 
} 
} 

dies mein Layout ist:

<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" 
> 

<include layout="@layout/toolbar_layout"/> 

<android.support.design.widget.AppBarLayout 
    android:id="@+id/app_bar_id" 
    android:layout_width="match_parent" 
    android:layout_height="230dp" 
    android:fitsSystemWindows="true" 
    android:theme="@style/AppTheme.AppBarOverlay"> 

    <android.support.design.widget.CollapsingToolbarLayout 
     android:id="@+id/collapsing_toolbar" 
     android:layout_width="match_parent" 
     android:layout_height="match_parent" 
     app:contentScrim="?attr/colorPrimary" 
     app:layout_scrollFlags="scroll|exitUntilCollapsed"> 


     <fragment 
      android:id="@+id/map" 
      android:name="com.google.android.gms.maps.SupportMapFragment" 
      xmlns:android="http://schemas.android.com/apk/res/android" 
      android:scaleType="centerCrop" 
      android:fitsSystemWindows="true" 
      android:layout_width="match_parent" 
      android:layout_height="match_parent" 
      app:layout_collapseMode="parallax"/> 


     <android.support.v7.widget.Toolbar 
      android:id="@+id/toolbar" 
      android:layout_width="match_parent" 
      android:layout_height="?attr/actionBarSize" 
      app:layout_collapseMode="pin" 
      app:popupTheme="@style/AppTheme.PopupOverlay" /> 

    </android.support.design.widget.CollapsingToolbarLayout> 

</android.support.design.widget.AppBarLayout> 

<android.support.v4.widget.NestedScrollView 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:background="@color/bg_login" 
    app:layout_behavior="@string/appbar_scrolling_view_behavior"> 

    <android.support.v7.widget.RecyclerView 
     android:id="@+id/recycler_view_id" 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:layout_alignParentTop="true" 
     android:layout_centerHorizontal="true" 
     android:scrollbars="vertical" /> 
</android.support.v4.widget.NestedScrollView> 

ist dies die Erlaubnis im Manifest:

... 
<uses-permission android:name="android.permission.INTERNET" /> 
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /> 
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" /> 
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" /> 
... 

diese ist mein build.gra dle:

... 
compile 'com.android.support:appcompat-v7:24.2.1' 
compile 'com.android.support:design:24.2.1' 
compile 'com.android.support:palette-v7:24.2.1' 
compile 'com.android.support:cardview-v7:24.2.1' 
compile 'com.android.support.constraint:constraint-layout:1.0.0-alpha9' 
compile 'com.google.code.gson:gson:2.6.2' 
compile 'com.android.volley:volley:1.0.0' 
compile 'com.android.support:support-v4:24.2.1' 
compile 'com.google.android.gms:play-services-maps:9.8.0' 
compile 'com.google.android.gms:play-services-location:9.8.0' 
... 

Answer 1

Symbolleiste überlappt die Schaltfläche "Mein Standort". Sie können mit der GoogleMap.setPadding() -Methode versuchen, an den Rändern der Karte "Abstand" hinzuzufügen. Die Karte wird weiterhin den gesamten Container ausfüllen, aber die Text- und Steuerelementpositionierung, Kartengesten und Kamerafahrten verhalten sich wie gehabt wurde in einem kleineren Raum platziert. " (see Maps Documentation)

mMap.setPadding(200, 200, 200, 200); 

Oder können Sie versuchen, hinzuzufügen:.

android:layout_marginTop="100dp" 

in Ihrem xml, für die MapFragment

Answer 2

Ich löse es MyButton Position in der onMapReady Methode mit diesem Code zu ändern:

// Get the button 

View locationButton = ((View) mapView.findViewById(Integer.parseInt("1")).getParent()).findViewById(Integer.parseInt("2")); 

RelativeLayout.LayoutParams layoutParams = (RelativeLayout.LayoutParams) 
       locationButton.getLayoutParams(); 

layoutParams.addRule(RelativeLayout.ALIGN_PARENT_TOP, 0); 
layoutParams.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM, RelativeLayout.TRUE); 
layoutParams.setMargins(0, 0, 30, 30);