本文介绍了ONTAP()在地图上的事件,不会触发的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

您好,我无法火灾ONTAP()事件

我想添加一个标记,每当我在地图上点击,当我在另一个GeoPoint的挖掘第一标记应该会消失,标记应在新的位置添加...

到现在我来到了这个point..can有人告诉我我要去哪里错了!
在此先感谢

来源$ C ​​$ C

 公共类的getLocation扩展MapActivity实现OnClickListener {MapView类MapView类;    MapController MC;    GeoPoint的磷;
    INT范围;
    串类;
    按钮来查看,交通;
    私有静态最后的字符串标记=类的getLocation;
    ZoomControls zoomControls;
    帆布油画;
    MapOverlay itemizedoverlay;
    清单<&叠加GT; mapOverlays;     公共无效的onCreate(捆绑savedInstanceState){
            super.onCreate(savedInstanceState);
            Log.d(变量,里面的onCreate);
            的setContentView(R.layout.main);
            图形页面=(图形页面)findViewById(R.id.myMapView1);
            的LinearLayout变焦=(的LinearLayout)findViewById(R.id.zoom);
            mapView.setReticleDrawMode(
                    MapView.ReticleDrawMode.DRAW_RETICLE_UNDER);
         //可绘制可绘制= this.getResources()getDrawable(R.drawable.mark)。
            鉴于=(按钮)findViewById(R.id.BtnView);
            流量=(按钮)findViewById(R.id.BtnTraffic);
            捆绑额外= getIntent()getExtras()。
            如果(额外!= NULL)
            {
                类别= extra.getString(类);
                范围= extra.getInt(范围);
            }
            view.setOnClickListener(本);
            traffic.setOnClickListener(本);
            zoomControls =(ZoomControls)findViewById(R.id.zoomcontrols);
            zoomControls.setOnZoomInClickListener(新View.OnClickListener(){
                    @覆盖
                    公共无效的onClick(视图v){
                        mc.zoomIn();
                    }
            });
            zoomControls.setOnZoomOutClickListener(新View.OnClickListener(){
                    @覆盖
                    公共无效的onClick(视图v){
                        mc.zoomOut();
                    }
            });
            mapOverlays =调用MapView.getOverlays();
            可绘制可绘制= this.getResources()getDrawable(R.drawable.mark)。
            itemizedoverlay =新MapOverlay(绘制,这一点);
            MC = mapView.getController();
            mapView.invalidate();
            mc.setZoom(17);
            mapView.invalidate();
        // mapView.setSatellite(真);
            mapView.setStreetView(真);
         // mapView.setOnClickListener(本);
            Log.d(变量,退出的onCreate);
        }
    类MapOverlay扩展com.google.android.maps.ItemizedOverlay< OverlayItem>
    {        私人的ArrayList< OverlayItem> mOverlay =新的ArrayList< OverlayItem>();
        私人语境mContext;
        私人布尔isPinch = FALSE;
        公共MapOverlay(可绘制defaultMarker,上下文的背景下){
            超级(boundCenterBottom((defaultMarker)));
            mContext =背景;
            // TODO自动生成构造函数存根
        }
        公共无效addOverlayItem(OverlayItem overlayItem)
        {            如果(!mOverlay.contains(overlayItem)){                mOverlay.add(overlayItem);
            }           填充();        }
        @覆盖
        保护OverlayItem createItem中(int i)以{
            // TODO自动生成方法存根
            返回null;
        }
        @覆盖
        公众诠释大小(){
            // TODO自动生成方法存根
            返回mOverlay.size();
        }
        公共布尔中的onTap(GeoPoint的P,MapView类图)
        {
            如果(isPinch)
            {
                Log.i(中的onTap,如果中!);
                返回false;
            }
            其他
            {
                Log.i(中的onTap,TAP!);
                如果(P!= NULL)
                {
                     OverlayItem overlayitem =新OverlayItem(对,,);                    itemizedoverlay.addOverlayItem(overlayitem);
                     mapOverlays.add(itemizedoverlay);
                     Toast.makeText(getBaseContext(),
                             p.getLatitudeE6()/ 1E6 +,自来水+
                             p.getLongitudeE6()/ 1E6,
                             Toast.LENGTH_SHORT).show();
                     Log.d(变量,退出轻按);
                    返回true; //我们处理的自来水
                }
                其他
                {
                    返回false; //空的GeoPoint
                }
            }
        }
}


解决方案

这是我的code
希望你能得到一些想法

 点P1 =新的点(0,0);
。MapView.getProjection()在toPixels(MapPoint的,P1); // MapPoint的是GeoPoint的对象
inDrag =项目; //项目从列表对象获取和inDrag是OverlayItem对象
items.remove(inDrag);项目是列表对象
填充();
GeoPoint的PT = MapView.getProjection()在fromPixels(p1.x + xDragImageOffset,p1.y)。
OverlayItem toDrop =新OverlayItem(PT,inDrag.getTitle(),inDrag.getSnippet());
items.add(toDrop);
填充();

Hello i am unable to fire ontap() event

i want to add a marker whenever i tap on map, and when i tap on another geopoint the first marker should disappear and the marker should be added on new location...

till now i have come to this point..can anybody tell me where am i going wrong!!thanks in advance

Source Code

public class GetLocation extends MapActivity  implements OnClickListener {

MapView mapView;

    MapController mc;

    GeoPoint p;
    int range;
    String category;
    Button view, traffic;
    private static final String Tag = "GetLocation class";
    ZoomControls zoomControls;
    Canvas canvas;
    MapOverlay itemizedoverlay;
    List<Overlay> mapOverlays;

     public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            Log.d("Tag","Inside onCreate");
            setContentView(R.layout.main);
            mapView = (MapView) findViewById(R.id.myMapView1);
            LinearLayout zoom = (LinearLayout)findViewById(R.id.zoom); 
            mapView.setReticleDrawMode(
                    MapView.ReticleDrawMode.DRAW_RETICLE_UNDER);
         //   Drawable drawable = this.getResources().getDrawable(R.drawable.mark);
            view=(Button)findViewById(R.id.BtnView);
            traffic=(Button)findViewById(R.id.BtnTraffic);
            Bundle extra=getIntent().getExtras();
            if(extra != null)
            {
                category=extra.getString("category");
                range=extra.getInt("range");
            }
            view.setOnClickListener(this);
            traffic.setOnClickListener(this);
            zoomControls = (ZoomControls) findViewById(R.id.zoomcontrols);
            zoomControls.setOnZoomInClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        mc.zoomIn();
                    }
            });
            zoomControls.setOnZoomOutClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        mc.zoomOut();
                    }
            });
            mapOverlays = mapView.getOverlays();
            Drawable drawable = this.getResources().getDrawable(R.drawable.mark);
            itemizedoverlay = new MapOverlay(drawable,this);
            mc = mapView.getController();
            mapView.invalidate();
            mc.setZoom(17); 
            mapView.invalidate();
        //    mapView.setSatellite(true);
            mapView.setStreetView(true);
         //   mapView.setOnClickListener(this);
            Log.d("Tag","Exit onCreate");
        }
    class MapOverlay extends com.google.android.maps.ItemizedOverlay<OverlayItem>
    {

        private ArrayList<OverlayItem> mOverlay = new ArrayList<OverlayItem>();
        private Context mContext;
        private boolean  isPinch = false;
        public MapOverlay(Drawable defaultMarker,Context context) {
            super(boundCenterBottom((defaultMarker)));
            mContext = context;
            // TODO Auto-generated constructor stub
        }


        public void addOverlayItem(OverlayItem overlayItem)
        {

            if(!mOverlay.contains(overlayItem)){

                mOverlay.add(overlayItem);
            }

           populate();

        }


        @Override
        protected OverlayItem createItem(int i) {
            // TODO Auto-generated method stub
            return null;
        }
        @Override
        public int size() {
            // TODO Auto-generated method stub
            return mOverlay.size();
        }
        public boolean onTap(GeoPoint p, MapView map)
        {
            if ( isPinch )
            {
                Log.i("onTap","in if!");
                return false;
            }
            else
            {
                Log.i("onTap","TAP!");
                if ( p!=null )
                {
                     OverlayItem overlayitem = new OverlayItem(p," ", " ");

                    itemizedoverlay.addOverlayItem(overlayitem);
                     mapOverlays.add(itemizedoverlay);
                     Toast.makeText(getBaseContext(), 
                             p.getLatitudeE6() / 1E6 + ",on Tap" + 
                             p.getLongitudeE6() /1E6 , 
                             Toast.LENGTH_SHORT).show();
                     Log.d("Tag","Exit TAp");
                    return true;            // We handled the tap
                }
                else
                {
                    return false;           // Null GeoPoint
                }
            }
        }
}
解决方案

this is my code hope you can get some idea

Point p1=new Point(0,0);
mapView.getProjection().toPixels(mapPoint, p1);// mapPoint is GeoPoint object
inDrag=item;  // item get from List object and inDrag is an OverlayItem object
items.remove(inDrag); items is list object
populate();
GeoPoint pt=mapView.getProjection().fromPixels(p1.x+xDragImageOffset,p1.y);
OverlayItem toDrop=new OverlayItem(pt, inDrag.getTitle(),inDrag.getSnippet());
items.add(toDrop);
populate();

这篇关于ONTAP()在地图上的事件,不会触发的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!

10-12 11:39