在我的地图视图中，在 SingleTapUp 中使用了 geocding。每当使用 mapview 的缩放控件时，singleTapUp 也会被调用。任何克服这种情况的建议。
我的主要方法中的代码
public static TextView info;
private MapController mapController;
private MapView mapView;
public LocationManager orgManager;
private MyOverlays itemizedoverlay, blackmarker;
public boolean gps_enabled = false;
public boolean network_enabled = false;
public Criteria c;
public String bestProvider;
public double orginLongitude, orginLatitude, destLongtitude, destLatitude,
currLatitude, currLongtitude, lat, lon;
public boolean isLongPress= false, GPSfix = false;
Location originLocation = new Location("source");
Location currLocation = new Location("current");
Location destinationLocation = new Location("destination");
Location fixlocation= new Location("fix");
NotificationManager nm;
Vibrator v;
MediaPlayer mp = new MediaPlayer();
private TextToSpeech myTTS;
private int MY_DATA_CHECK_CODE = 0;
private List<Overlay> mapOverlays;
private Projection projection;
GestureDetector gestureScanner;
long lastGesture = System.currentTimeMillis();
GeoPoint markerPoint = null;
private int count = 0;
MyLocationOverlay mo;
public GeoPoint source;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.map_layout);
info = (TextView) findViewById(R.id.infopane);
mapView = (MapView) findViewById(R.id.mapView);
//Button myloc = (Button)findViewById(R.id.myloc);
info.setText("Please Tap on the Map");
orgManager = (LocationManager) this
.getSystemService(Context.LOCATION_SERVICE);
mapView.setBuiltInZoomControls(true);
mapView.setSatellite(true);
markerPoint = null;
mapController = mapView.getController();
mapController.setZoom(16); // Zoom 1 is world view
mapView.invalidate();
mo = new MyLocationOverlay(MapClass.this, mapView);
mapView.getOverlays().add(mo);
mapOverlays = mapView.getOverlays();
projection = mapView.getProjection();
Drawable drawable = this.getResources()
.getDrawable(R.drawable.mark_red);
Drawable black_marker = this.getResources().getDrawable(
R.drawable.marker_black);
itemizedoverlay = new MyOverlays(drawable);
blackmarker = new MyOverlays(black_marker);
try {
gps_enabled = orgManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
Log.i("success", "Gps:" + String.valueOf(gps_enabled)+ "N/w:" + String.valueOf(network_enabled) );
} catch (Exception ex) {
Log.i("sample", "sample");
}
if (!gps_enabled) {
Log.i("failure", "Gps:" + String.valueOf(gps_enabled)+ "N/W:" + String.valueOf(network_enabled) );
final AlertDialog.Builder builder = new AlertDialog.Builder(MapClass.this);
builder.setTitle("Attention!");
builder.setMessage("Sorry, location is not determined. Please open app after enabling GPS & wireless networks").setCancelable(false).setPositiveButton("OK", new OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
startActivity(new Intent(
android.provider.Settings.ACTION_LOCATION_SOURCE_SETTINGS));
finish();
}
});
AlertDialog alert = builder.create();
alert.show();
}
if(gps_enabled){
orgManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, this);
fixlocation = orgManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
Log.i("fix", String.valueOf(fixlocation.getLatitude() + fixlocation.getLongitude()));
if (fixlocation!=null){
originLocation.setLatitude(fixlocation.getLatitude());
originLocation.setLongitude(fixlocation.getLongitude());
Log.i("origin fix", String.valueOf(originLocation.getLatitude() + originLocation.getLongitude()));
GPSfix = true;
}else Toast.makeText(MapClass.this, "", Toast.LENGTH_SHORT).show();
}
if (GPSfix) {
// double a = originLocation.getLatitude();
// double b = originLocation.getLongitude();
source = new GeoPoint(
(int) ((fixlocation.getLatitude()) * 1E6),
(int) ((fixlocation.getLongitude()) * 1E6));
mapController.animateTo(source);
mapView.getMapCenter();
createMarker();
Toast.makeText( MapClass.this," Source GPS Values Latitude: "
+ fixlocation.getLatitude() + " Longitude: "
+ fixlocation.getLongitude(), Toast.LENGTH_SHORT).show();
}
else Toast.makeText(MapClass.this, "Wait for GPS", Toast.LENGTH_SHORT).show();
gestureScanner = new GestureDetector(this, this);
}
手势扫描方法中的代码。
长按
@Override public void onLongPress(final MotionEvent e) { // TODO Auto-generated method stuMapClass Toast.makeText(MapClass.this, // "LongPress", Toast.LENGTH_SHORT) AlertDialog.Builder alertDialog = new AlertDialog.Builder(MapClass.this); // Setting Dialog Title alertDialog.setTitle("Alert!!"); // Setting Dialog Message alertDialog.setMessage("Do you want to select this as destination"); // Setting Positive "Yes" Button alertDialog.setPositiveButton("YES", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { // Write your code here to execute after dialog String add = ""; GeoPoint geopoint = mapView.getProjection().fromPixels( (int) e.getX(), (int) e.getY()); // latitude lat = geopoint.getLatitudeE6() / 1E6; // longitude lon = geopoint.getLongitudeE6() / 1E6; Geocoder geoCoder = new Geocoder(getBaseContext(), Locale.getDefault()); try { List<Address> addresses = geoCoder.getFromLocation( geopoint.getLatitudeE6() / 1E6, geopoint.getLongitudeE6() / 1E6, 1); if (addresses.size() > 0) { for (int i = 0; i < addresses.get(0) .getMaxAddressLineIndex(); i++) add += addresses.get(0).getAddressLine(i) + "\n"; } Toast.makeText(getBaseContext(), add, Toast.LENGTH_SHORT).show(); } catch (IOException ioe) { ioe.printStackTrace(); } mapOverlays.add(new MyOverlay((originLocation .getLatitude()), (originLocation.getLongitude()), lat, lon)); destinationLocation.setLatitude(lat); destinationLocation.setLongitude(lon); String distance = Float.toString((originLocation .distanceTo(destinationLocation) / 1000)); createblack(); count++; Toast.makeText(getBaseContext(), distance + "kms", Toast.LENGTH_SHORT).show(); info.setText("Selected destination is " + "\n" + add + "\n" + " The journey distance is " + distance + " Kms "); mapView.postInvalidate(); isLongPress = true; mapController.animateTo(source); mapView.getMapCenter(); } private void createblack() { // TODO Auto-generated method stub GeoPoint p = new GeoPoint((int) (lat * 1E6), (int) (lon * 1E6)); OverlayItem overlayitem = new OverlayItem(p, "Destination", ""); blackmarker.addOverlay(overlayitem); mapView.getOverlays().add(blackmarker); } }); // Setting Negative "NO" Button alertDialog.setNegativeButton("NO", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { // Write your code here to execute after dialog Toast.makeText(getApplicationContext(), "You clicked on NO", Toast.LENGTH_SHORT).show(); dialog.cancel(); } }); // Showing Alert Message alertDialog.show(); }- OnsingeTapup
@覆盖
public boolean onSingleTapUp(MotionEvent arg0) { // TODO 自动生成的方法存根
Log.i("SingleTap", arg0.toString());
GeoPoint geopoint = mapView.getProjection().fromPixels(
(int) arg0.getX(), (int) arg0.getY());
Geocoder geoCoder = new Geocoder(getBaseContext(), Locale.getDefault());
try {
List<Address> addresses = geoCoder.getFromLocation(
geopoint.getLatitudeE6() / 1E6,
geopoint.getLongitudeE6() / 1E6, 1);
String add = "";
if (addresses.size() > 0) {
for (int i = 0; i < addresses.get(0).getMaxAddressLineIndex(); i++)
add += addresses.get(0).getAddressLine(i) + "\n";
}
if (count == 0) {
info.setText("The location you have selected is" + "\n" + add
+ "\n" + "To confirm it longpress the location");
} else
Toast.makeText(getBaseContext(), add, Toast.LENGTH_SHORT)
.show();
} catch (IOException ioe2) {
ioe2.printStackTrace();
}
return true;
}
另外使用了一个覆盖类来放置标记..