我已经使用Polygons获得了Google地图，我已经完成了所有工作，但最后一部分检测Marker是否已经在Polygon内目前的情况是，当我触摸Polygon时，它会添加Marker＆＃34;这是正确的＆＃34;但如果我在另一个地点触摸Polygon，则会移除Marker并添加新的Marker。我想要发生的是，如果public void onMapClick(LatLng point) {
for (int j = 0; j < arrPolygons.size(); j++) {
if (isPointInPolygon(point, arrPolygons.get(j).getPoints())) {
if (marker != null) {
marker.remove();
marker = null;
Log.v("Marker", "Removing Marker");
}else{
marker = googleMap.addMarker(new MarkerOptions()
.position(point)
.title("test")
.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_RED)));
Log.v("Marker", "ADDing Marker");
}
}
}
已经在这些点之内，则不要添加新的点。我的代码在任何帮助下都会受到赞赏。
RewriteEngine on
RewriteBase /
# if not https, redirect
RewriteCond %{SERVER_PORT} !^443$
RewriteRule ^ https://%{HTTP_HOST}%{REQUEST_URI} [L,R=302]
# convert ?token=... to &token=...
RewriteCond %{THE_REQUEST} \s/+(.+?)\?(token=[^&\s]+\S*)\s [NC]
RewriteRule ^ /%1&%2? [L,NE,R=302]
# if only / is present, need to stop looping (domain.com/)
RewriteRule ^(index\.php)?$ - [L,NC]
# match subdomain
RewriteCond %{ENV:REDIRECT_STATUS} ^$
RewriteCond %{HTTP_HOST} !^app
RewriteCond %{HTTP_HOST} ^([^.]+)\.[^.]+\.[^.]+$
RewriteRule ^(.*)$ $1?sub=%1 [L,QSA]
# ignore any .php|.html|.asp|.ico files and certain directories
RewriteRule ^(exec|images|css|js|xyz|(.*)\.php|(.*)\.html|(.*)\.asp|(.*)\.ico)($|/) - [L]
# map all requests to 'path'
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.+)$ index.php?path=$1 [L,QSA]
任何帮助都将不胜感激。
答案 0 :(得分：1)
最简单的方法是使用Google Maps Android API Utility Library，其中包含PolyUtil类。
首先通过将当前版本添加到build.gradle来导入库，目前0.3.4
例如：
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
compile 'com.android.support:appcompat-v7:22.1.1'
compile 'com.google.android.gms:play-services-maps:7.3.0'
compile 'com.google.maps.android:android-maps-utils:0.3.4'
}
对于这个简单的例子，我们假设Map Activity类定义和成员变量看起来像这样，并且polygonList中只定义了一个Polygon：
import com.google.maps.android.PolyUtil;
//other imports.....
public class MapsActivity extends AppCompatActivity implements OnMapReadyCallback {
private GoogleMap mMap;
private Marker marker;
List<LatLng> polygonList = new ArrayList<LatLng>();
//.............
然后，您可以像这样设置GoogleMap.OnMapClickListener，以便只在Polygon中添加一个Marker。：
mMap.setOnMapClickListener(new GoogleMap.OnMapClickListener() {
@Override
public void onMapClick(LatLng point) {
if (PolyUtil.containsLocation(point, polygonList, false)) {
if (marker == null) {
//only add Marker if there is not one already inside the Polygon
marker = mMap.addMarker(new MarkerOptions()
.position(point)
.title("test")
.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_RED)));
Log.v("Marker", "ADDing Marker");
}
}
}
});
多个多边形，多个标记解决方案：
为了使其适用于多个Ploygons，您可以使用POJO存储多边形/标记对：
public class PolyMarkerObject{
Polygon polygon;
Marker marker;
}
然后定义一个新的成员变量polyMarkerList：
public class MapsActivity extends AppCompatActivity implements OnMapReadyCallback {
private GoogleMap mMap;
List<PolyMarkerObject> polyMarkerList = new ArrayList<>();
//.............
绘制时将每个多边形添加到列表中：
List<LatLng> newPolygon = new ArrayList<>();
//set up the points in the Polygon.......
Polygon p = mMap.addPolygon(new PolygonOptions()
.addAll(newPolygon)
.strokeColor(Color.RED)
.fillColor(Color.BLUE));
PolyMarkerObject newPolyMarkerObj = new PolyMarkerObject();
newPolyMarkerObj.polygon = p;
polyMarkerList.add(newPolyMarkerObj);
然后循环浏览每个地图上的列表，点击以查看当前Ploygon是否已有标记。如果它已经没有标记，则删除已放置在不同多边形中的任何标记，并在当前多边形中创建一个：
mMap.setOnMapClickListener(new GoogleMap.OnMapClickListener() {
@Override
public void onMapClick(LatLng point) {
for (PolyMarkerObject pmObj : polyMarkerList) {
//only add Marker if there is not one already inside the Polygon
if (PolyUtil.containsLocation(point, pmObj.polygon.getPoints(), false)) {
if (pmObj.marker == null) {
//Add Marker to current Polygon
Marker newMarker = mMap.addMarker(new MarkerOptions()
.position(point)
.title("test")
.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_RED)));
pmObj.marker = newMarker;
Log.v("Marker", "ADDing Marker");
break;
}
}
}
}
});
多个多边形，一个标记解决方案：
在这种情况下，您只需要一个Marker引用和一个多边形列表：
public class MapsActivity extends AppCompatActivity implements OnMapReadyCallback {
private GoogleMap mMap;
Marker marker;
List<Polygon> polyList = new ArrayList<>();
//................
将多边形添加到地图时将其添加到列表中：
List<LatLng> newPolygon = new ArrayList<>();
//set up the points in the Polygon.......
Polygon p = mMap.addPolygon(new PolygonOptions()
.addAll(newPolygon)
.strokeColor(Color.RED)
.fillColor(Color.BLUE));
polyList.add(p);
然后，在Map单击侦听器中，您有两种情况，一种用于标记引用为空（尚未添加标记），另一种用于标记是否在不同的多边形中。如果标记已经在当前的Polygon中，则不会移动它。
mMap.setOnMapClickListener(new GoogleMap.OnMapClickListener() {
@Override
public void onMapClick(LatLng point) {
for (Polygon pObj : polyList) {
//find Polygon user tapped inside of
if (PolyUtil.containsLocation(point, pObj.getPoints(), false)) {
//first case, no Marker
if (marker == null) {
//Add Marker to current Polygon
marker = mMap.addMarker(new MarkerOptions()
.position(point)
.title("test")
.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_RED)));
Log.v("Marker", "ADDing first Marker");
break;
}
else if (!PolyUtil.containsLocation(marker.getPosition(), pObj.getPoints(), false)) {
//Marker exists already in a different Polygon
//remove Marker from previous Polygon
marker.remove();
//Add Marker to current Polygon
marker = mMap.addMarker(new MarkerOptions()
.position(point)
.title("test")
.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_RED)));
Log.v("Marker", "Moving Marker to new Polygon");
break;
}
}
}
}
});