如何在片段中使用Google地图

Question

我正在尝试将此类放在一个片段中，如何将其放入一个片段类中？

public class MapsActivity extends FragmentActivity {

    private GoogleMap mMap; // Might be null if Google Play services APK is not available.

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_maps);
        setUpMapIfNeeded();
    }

    @Override
    protected void onResume() {
        super.onResume();
        setUpMapIfNeeded();
    } 

我需要在我的片段中使用这些方法。但是我无法通过按钮开车]

    public void onSearch(View view) {
        EditText location_tf = (EditText) findViewById(R.id.TFaddress);
        String location = location_tf.getText().toString();
        List<Address> addressList = null;
        if (location != null || !location.equals("")) {
            Geocoder geocoder = new Geocoder(this);
            try {
                addressList = geocoder.getFromLocationName(location, 1);


            } catch (IOException e) {
                e.printStackTrace();
            }
                Address address = addressList.get(0);
            LatLng latLng = new LatLng(address.getLatitude(), address.getLongitude());
            mMap.addMarker(new MarkerOptions().position(latLng).title("Marker"));
            mMap.animateCamera(CameraUpdateFactory.newLatLng(latLng));
            }
    }
        public void onZoom(View view) {
        if (view.getId() == R.id.Bzoomin) {
            mMap.animateCamera(CameraUpdateFactory.zoomIn());
        }
        if (view.getId() == R.id.Bzoomout) {
            mMap.animateCamera(CameraUpdateFactory.zoomOut());
        }
    }

    public void changeType(View view) {
        if (mMap.getMapType() == GoogleMap.MAP_TYPE_NORMAL) {
            mMap.setMapType(GoogleMap.MAP_TYPE_SATELLITE);
        } else
            mMap.setMapType(GoogleMap.MAP_TYPE_NORMAL);
    }

    private void setUpMapIfNeeded() {
        // Do a null check to confirm that we have not already instantiated the map.
        if (mMap == null) {
            // Try to obtain the map from the SupportMapFragment.
            mMap = ((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map))
                    .getMap();
            // Check if we were successful in obtaining the map.
            if (mMap != null) {
                setUpMap();
            }
        }
    }

所有这些操作都通过“ onClick”连接到布局。

    private void setUpMap() {
        mMap.addMarker(new MarkerOptions().position(new LatLng(0, 0)).title("Marker"));
        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.
            return;
        }
        mMap.setMyLocationEnabled(true);


    }
}

我正在尝试将此类放在一个片段类中，如何将其放入一个片段类中？公共类MapsActivity扩展FragmentActivity {私有GoogleMap mMap; //如果Google Play ...可能为null ...

Answer 1

片段类应该这样...

Answer 2

在我的项目中，地图是通过以下方式实现的：

Answer 3

这对我有用的是