android - 在 map fragment 上添加按钮以在 map 上执行操作

Question

我正在开发一个简单的 map 应用程序，我使用navigationDrawer将我的 map 放在抽屉的第一个选项中。现在的问题是当我将任何按钮放在 map 的同一 fragment 或同一布局中，它都不会执行我想要的操作! 例如:当我单击按钮时，我需要放大我的位置。 我尝试了在网站上找到的一些解决方案，但没有成功..

xml 代码:

<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:layout_width="match_parent"
android:layout_height="match_parent">


   <fragment android:layout_height="match_parent"   
  android:layout_width="405dp" android:id="@+id/mapfragment"

    class="com.google.android.gms.maps.MapFragment"


    android:layout_marginEnd="8dp"
    app:layout_constraintBottom_toBottomOf="parent"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintTop_toTopOf="parent"
    android:layout_marginRight="8dp"

/>


<RelativeLayout android:layout_width="wrap_content" 
android:layout_height="wrap_content">
    <Button
        android:id="@+id/bt1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginBottom="46dp"
        android:text="Button"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        android:onClick="onClick"
        />
</RelativeLayout>




</android.support.constraint.ConstraintLayout>

java代码:

 public class maptest extends Fragment implements OnMapReadyCallback,View.OnClickListener {
GoogleMap mp;

@Nullable
View v1;

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

    Button bt2=(Button)v1.findViewById(R.id.bt1);
    bt2.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            Toast.makeText(getActivity(), "ggg", Toast.LENGTH_SHORT).show();
        }
    });


    return inflater.inflate(R.layout.newmapfragment, container,false);

}



@RequiresApi(api = Build.VERSION_CODES.JELLY_BEAN_MR1)
@Override
public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
    super.onViewCreated(view, savedInstanceState);

    MapFragment fragment= (MapFragment) getChildFragmentManager().findFragmentById(R.id.mapfragment);
    fragment.getMapAsync(this);

}

@Override

public void onMapReady(GoogleMap mp) {
    // Add a marker in Sydney, Australia,
    // and move the map's camera to the same location.
    LatLng sydney = new LatLng(31.163937, 35.710373);
    mp.addMarker(new MarkerOptions().position(sydney)
            .title("Marker in Sydney"));
    mp.moveCamera(CameraUpdateFactory.newLatLng(sydney));

   mp.addMarker(new MarkerOptions().position(new 
   LatLng(31.163937,35.710373)).title("mymap")).showInfoWindow();
   mp.animateCamera(CameraUpdateFactory.newLatLngZoom(new 
   LatLng(31.163937,35.710373),16));
   }



   @Override
   public void onClick(View view) {
    Button b = (Button) view.findViewById(R.id.bt1);
    b.setOnClickListener(this);
    LatLng sydney = new LatLng(31.163937, 35.710373);
    mp.addMarker(new MarkerOptions().position(sydney)
            .title("Marker in Sydney"));
    mp.moveCamera(CameraUpdateFactory.newLatLng(sydney));

    mp.addMarker(new MarkerOptions().position(new 
    LatLng(31.163937,35.710373)).title("mymap")).showInfoWindow();
    mp.animateCamera(CameraUpdateFactory.newLatLngZoom(new 
    LatLng(31.163937,35.710373),16));
     }


    }

任何帮助将不胜感激..

Answer 1

您可能会在 fragment 的 onCreateView 中忘记:

vi=inflater.inflate(your_fragment_layout_xml,container,false);