Question

我有一个Activity（膨胀地图片段），它实现了GoogleMap.onCameraChangedListener，并且我已经覆盖了onCameraChange方法。

问题在于，无论何时我在地图上移动，即相机位置发生变化，都不会调用onCameraChange方法。

导致这种情况的原因是什么？

Answer 1

试试这个：

<form method="get" ng-app="StarterApp"  ng-controller="AppCtrl" action="searchresults.html" id="target" autocomplete="off">
   <br/>
    <div class="row">
    <div class="col-md-4"><input class="form-control" tabindex="1" autofocus g-places-autocomplete force-selection="true"  ng-model="user.fromPlace" placeholder="From Place" autocomplete="off"   required>
    </div>
        <div class="col-md-4"><input class="form-control" tabindex="2"  g-places-autocomplete force-selection="true"  placeholder="To Place" autocomplete="off" ng-model="user.toPlace" required>
    </div>
    <div class="col-md-4"> <input class="btn btn-primary"  type="submit" value="submit"></div></div><br /><br/>
    <input class="form-control"  style="width:40%" type="text" name="sourceAddressLat" placeholder="From Place Lat" id="fromLat">
    <input class="form-control"  style="width:40%"type="text" name="sourceAddressLang" placeholder="From Place Long" id="fromLong">
    <input class="form-control"  style="width:40%"type="text" name="sourceAddress" placeholder="From Place City" id="fromCity">
    <input class="form-control"  style="width:40%"type="text" name="destinationAddressLat" placeholder="To Place Lat" id="toLat">
    <input class="form-control"  style="width:40%"type="text" name="destinationAddressLang" placeholder="To Place Long"id="toLong">
    <input class="form-control"  style="width:40%"type="text" name="destinationAddress"placeholder="To Place City" id="toCity">
</form>

}

布局：

 public class MapActivity extends AppCompatActivity implements
    GoogleMap.OnCameraChangeListener{
    private GoogleMap googleMap;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.googlemap_layout);
        setUpMapIfNeeded();

     }

@Override
public void onCameraChange(CameraPosition cameraPosition) {
    double latitude = cameraPosition.target.latitude;
    double longitude = cameraPosition.target.longitude;

}
private void setUpMapIfNeeded() {

    if (googleMap == null) {
        // Try to obtain the map from the SupportMapFragment.
        googleMap = ((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map)).getMap();
        if (googleMap != null) {

            googleMap.setMyLocationEnabled(true);
            googleMap.getUiSettings().setMyLocationButtonEnabled(true);
            googleMap.getUiSettings().setRotateGesturesEnabled(false);
            googleMap.getUiSettings().setZoomControlsEnabled(false);
            googleMap.setOnCameraChangeListener(this);

        }
    }
}

GoogleMaps.oncameraChangedListener永远不会被称为

1 个答案: