我有一张带针的Arcgis地图。当我点击一个针时，会出现一个气泡(callout)覆盖在针上方，这个功能运行得很完美。但是当我缩放地图时，callout不会跟随针一起移动。如何在缩放地图时保持气泡(callout)始终在针的顶部显示？
点击针后弹出气泡(callout)
下面的图片中可以看到，当缩放地图时，气泡(callout)会离开针
注意：我对Arcgis地图应用程序的现有示例项目进行了更改，即SymbolizingResults
以下是我对SymbolizingResults Activity所做的更改
点击针后弹出气泡(callout)
下面的图片中可以看到，当缩放地图时，气泡(callout)会离开针
注意：我对Arcgis地图应用程序的现有示例项目进行了更改，即SymbolizingResults
以下是我对SymbolizingResults Activity所做的更改public class SymbolizingResults extends Activity {
MapView map;
Button queryBtn;
GraphicsLayer gl;
Callout callout;
/** Called when the activity is first created. */
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
map = (MapView) findViewById(R.id.map);
map.addLayer(new ArcGISTiledMapServiceLayer(
"http://services.arcgisonline.com/ArcGIS/rest/services/World_Street_Map/MapServer"));
gl = new GraphicsLayer();
gl.setRenderer(createClassBreaksRenderer());
Point p = new Point(37.6922222, -97.3372222);
HashMap<String, Object> map1 = new HashMap<String, Object>();
map1.put("NAME", "India");
PictureMarkerSymbol pic = new PictureMarkerSymbol(this,getResources().getDrawable(R.drawable.pin_dest));
Graphic gr = new Graphic(p,pic,map1);
gl.addGraphic(gr);
map.addLayer(gl);
queryBtn = (Button) findViewById(R.id.querybtn);
queryBtn.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
// Sets query parameter
Query query = new Query();
query.setWhere("STATE_NAME='Kansas'");
query.setReturnGeometry(true);
String[] outfields = new String[] { "NAME", "STATE_NAME",
"POP07_SQMI" };
query.setOutFields(outfields);
query.setOutSpatialReference(map.getSpatialReference());
Query[] queryParams = { query };
AsyncQueryTask qt = new AsyncQueryTask();
qt.execute(queryParams);
}
});
// Sets 'OnSingleTapListener' so that when single tap
// happens, Callout would show 'SQMI' information associated
// with tapped 'Graphic'
map.setOnSingleTapListener(new OnSingleTapListener() {
private static final long serialVersionUID = 1L;
public void onSingleTap(float x, float y) {
if (!map.isLoaded())
return;
Point toDroppedPinPoint = map.toMapPoint(x, y);
System.out.println("X : "+toDroppedPinPoint.getX());
System.out.println("Y : "+toDroppedPinPoint.getY());
int[] uids = gl.getGraphicIDs(x, y, 2);
if (uids != null && uids.length > 0) {
int targetId = uids[0];
Graphic gr = gl.getGraphic(targetId);
callout = map.getCallout();
// Sets Callout style
callout.setStyle(R.xml.countypop);
/* String countyName = (String) gr.getAttributeValue("NAME");
String countyPop = gr.getAttributeValue("POP07_SQMI")
.toString();*/
// Sets custom content view to Callout
callout.setContent(loadView("Anshul", "India"));
callout.show(map.toMapPoint(new Point(x, y)));
} else {
if (callout != null && callout.isShowing()) {
callout.hide();
}
}
}
});
}
// Creates custom content view with 'Graphic' attributes
private View loadView(String countyName, String pop07) {
View view = LayoutInflater.from(CalloutSampleActivity.this).inflate(
R.layout.sqmi, null);
final TextView name = (TextView) view.findViewById(R.id.county_name);
name.setText(countyName + "'s SQMI");
final TextView number = (TextView) view.findViewById(R.id.pop_sqmi);
number.setText(pop07);
final ImageView photo = (ImageView) view
.findViewById(R.id.family_photo);
photo.setImageDrawable(CalloutSampleActivity.this.getResources()
.getDrawable(R.drawable.family));
return view;
}`