在我的地图视图中，在SingleTapUp中使用了geocding。每当使用地图视图的缩放控件时，也会调用 singleTapUp。克服这种情况的任何建议。
我的主方法中的代码
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);
}
手势扫描器方法中的代码。
上龙按
@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
@Override
public boolean onSingleTapUp（MotionEvent arg0） { 待办事项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;
}
此外，还使用覆盖类来放置标记。
调试代码有点困难，因为缺少重要部分，但我建议查看类似 StackOverflow 问题的以下答案：
https://stackoverflow.com/a/2990749/376016
在 MapView 上识别手势的建议解决方案是创建一个仅处理触摸事件的自定义叠加层，并将其作为第一个叠加层插入。使用这种方法，我能够创建一个小型测试应用程序，该应用程序使用您的大部分代码，并正确忽略了在 MapView 上缩放手势的捏合。