【发布时间】:2015-01-28 11:43:15
【问题描述】:
我尝试让列表视图滚动到位置,我尝试了所有可能的功能但都不起作用
更多代码解释 首先:我在地图上放置标记然后调用列表适配器 其次,如果用户单击地图上的标记,则列表视图应将所选位置显示为单击标记
private void Putting_places_on_Map(final List<PlaceModel> Places) {
// TODO Auto-generated method stub
for (int i = 0; i < Places.size(); i++) {
LatLng place_loc = new LatLng(Double.parseDouble(Places.get(i)
.getLatitude()), Double.parseDouble(Places.get(i)
.getLongitude()));
map.addMarker(new MarkerOptions().position(place_loc).icon(
BitmapDescriptorFactory
.fromResource(R.drawable.glossygreencirclemarker)));
}
// when marker clicked
map.setOnMarkerClickListener(new OnMarkerClickListener() {
@Override
public boolean onMarkerClick(Marker marker) {
// TODO Auto-generated method stub
LatLng PlaceLocation = marker.getPosition();
int selected_marker=-1;
for (int i = 0; i < Places.size(); i++) {
if (PlaceLocation.latitude == Double.parseDouble(Places
.get(i).getLatitude())
&& PlaceLocation.longitude == Double
.parseDouble(Places.get(i).getLongitude())) {
selected_marker=i;
}
}
Update_List_Places(Places, selected_marker);
return false;
}
});
}
private void Update_List_Places(List<PlaceModel> Places,
int selected_marker_position) {
// TODO Auto-generated method stub
list_places_returned = true;
ListPlacesNearbyAdapter placesNearbyAdapter = new ListPlacesNearbyAdapter(
(ArrayList<PlaceModel>) Places, activity,
selected_marker_position);
placesNearbyAdapter.notifyDataSetChanged();
if(selected_marker_position != -1){
//listview_nearby_locations.setSelection(selected_marker_position);
//listview_nearby_locations.smoothScrollToPosition(selected_marker_position);
//listview_nearby_locations.setSelectionFromTop(selected_marker_position, 100);
int y= selected_marker_position*40;
listview_nearby_locations.scrollTo(0,y);
}
listview_nearby_locations.setAdapter(placesNearbyAdapter);
}
看这张照片
【问题讨论】:
-
smoothScrollToPosition -
可以使用 setSelection() 方法
-
我已经用过了,但是不行