这里我使用了谷歌地图和叠加层。我使用图钉图像指向GeoPoint。
我想为推针设置OnClickListener事件。当用户触摸引脚时，我想要一个消息。下面是代码。
import java.util.List;
import com.google.android.maps.GeoPoint;
import com.google.android.maps.MapActivity;
import com.google.android.maps.MapController;
import com.google.android.maps.MapView;
import com.google.android.maps.Overlay;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Point;
import android.os.Bundle;
import android.widget.Toast;
public class Googlemap1_6Activity extends MapActivity
{
/** Called when the activity is first created. */
MapView mapView;
MapController mc;
GeoPoint p;
class Mapoverlay extends com.google.android.maps.Overlay
{
@Override
public boolean draw(Canvas canvas, MapView mapView, boolean shadow,
long when)
{
// TODO Auto-generated method stub
super.draw(canvas, mapView, shadow, when);
Point screenPts =new Point();
mapView.getProjection().toPixels(p, screenPts);
Bitmap bmp = BitmapFactory.decodeResource(getResources(), R.drawable.pushpin2);
canvas.drawBitmap(bmp, screenPts.x, screenPts.y-26, null);
return true;
}
@Override
public boolean onTap(GeoPoint pl, MapView mapView) {
// TODO Auto-generated method stub
if(pl.equals(p))
{
Toast.makeText(getBaseContext(),
"This is International Airport",
Toast.LENGTH_LONG).show();
}
return super.onTap(pl, mapView);
}
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
String lat_coordinates[] ={"27.700556"};
String lng_coordinates[] ={"85.3630"};
Double lat = Double.parseDouble(lat_coordinates[0]);
Double lng = Double.parseDouble(lng_coordinates[0]);
p = new GeoPoint(
(int) (lat*1E6),
(int) (lng*1E6));
mapView = (MapView) findViewById(R.id.mapView);
mc=mapView.getController();
mapView.setBuiltInZoomControls(true);
mc.setZoom(10);
mc.animateTo(p);
Mapoverlay MapOverlay = new Mapoverlay();
List<Overlay> listofOverlays = mapView.getOverlays();
listofOverlays.clear();
listofOverlays.add(MapOverlay);
mapView.invalidate();
}
@Override
protected boolean isRouteDisplayed() {
// TODO Auto-generated method stub
return false;
}
}
答案 0 :(得分：0)
你覆盖自己的叠加层，所以你必须自己处理标签。为什么不使用ItemizedOverlay。覆盖那里的onTab(int index)，你就完成了。 它还有一个有用的hitTest方法。
答案 1 :(得分：0)
使用以下链接的代码，它可能对您有帮助。
答案 2 :(得分：0)
感谢大家，因为你支持...同时，我解决了我的问题，所以我在这里发帖，希望它能帮助其他人......
package org.nip.gmap;
import java.util.List;
import com.google.android.maps.GeoPoint;
import com.google.android.maps.MapActivity;
import com.google.android.maps.MapController;
import com.google.android.maps.MapView;
import com.google.android.maps.Overlay;
import com.google.android.maps.OverlayItem;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
public class Main extends MapActivity {
/** Called when the activity is first created. */
MapView map;
MapController controller;
List<Overlay> overlayList;
int lat=0;
int lng=0;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
map = (MapView) findViewById(R.id.mapView);
map.setBuiltInZoomControls(true);
overlayList = map.getOverlays();
Drawable drawable = this.getResources().getDrawable(R.drawable.pushpin2);
CustomPinpoint itemizedoverlay = new CustomPinpoint(drawable,this);
double lat_coordinates[] ={27.700556,28.2642635,30.0018168,29.776669,29.4096819,29.4560611};
double lng_coordinates[] ={85.3630,83.9735195,80.7382742,81.2518833,81.8115051,80.5403779};
String place_name[] ={"kathmandu","Pokhara","Darchula","Bajhang","Bajura","Baitadi"};
String place_info[] ={"Its an capital of Nepal","Its and tourist place of Nepal","Its one of the beautiful place in country side","CHD District Target:10 51,960, VDCs/Muncipalities reported:41/41","CHD District Target: 71,280, VDCs/Muncipalities reported: 47/47","CHD District Target:10 51,960, VDCs/Muncipalities reported:41/41","CHD District Target: 71,280, VDCs/Muncipalities reported: 7/7","CHD District Target:10 21,960, VDCs/Muncipalities reported:44/41","CHD District Target: 33,3123, VDCs/Muncipalities reported: 47/47"};
try{
for(int i=0; i<place_name.length; i++)
{
GeoPoint point = new GeoPoint((int)(lat_coordinates[i]*1E6),(int)(lng_coordinates[i]*1E6));
OverlayItem overlayitem = new OverlayItem(point, place_name[i], place_info[i]);
itemizedoverlay.addOverlay(overlayitem);
}
}catch(NullPointerException e){
e.getStackTrace();
}
finally{
overlayList.add(itemizedoverlay);
}
controller = map.getController();
controller.animateTo(new GeoPoint((int)(lat_coordinates[0]*1E6),(int)(lng_coordinates[0]*1E6)));
controller.setZoom(8);
}
@Override
protected boolean isRouteDisplayed() {
// TODO Auto-generated method stub
return false;
}
}
创建新班级......
package org.nip.gmap;
import java.util.ArrayList;
import android.app.AlertDialog;
import android.content.Context;
import android.graphics.drawable.Drawable;
//import com.google.android.maps.GeoPoint;
import com.google.android.maps.ItemizedOverlay;
import com.google.android.maps.OverlayItem;
public class CustomPinpoint extends ItemizedOverlay<OverlayItem> {
private ArrayList<OverlayItem> pinpoints = new ArrayList<OverlayItem>();
private Context c;
public CustomPinpoint(Drawable defaultMarker, Context context) {
super(boundCenter(defaultMarker));
c= context;
}
// public CustomPinpoint(Drawable M, Context context) {
//
// this(M);
// c= context;
// }
public void addOverlay (OverlayItem overlay)
{
pinpoints.add(overlay);
populate();
}
@Override
protected OverlayItem createItem(int i) {
// TODO Auto-generated method stub
return pinpoints.get(i);
}
@Override
public int size() {
// TODO Auto-generated method stub
return pinpoints.size();
}
@Override
protected boolean onTap(int index) {
// TODO Auto-generated method stub
OverlayItem item = pinpoints.get(index);
AlertDialog.Builder dialog = new AlertDialog.Builder(c);
dialog.setTitle(item.getTitle());
dialog.setMessage(item.getSnippet());
dialog.show();
return true;
}
}