mMap.setOnMapClickListener中存在Null对象错误(此错误); package com.example.mukesh.airpollution; 导入android.graphics.Color; 导入android.os.Bund
mMap.setOnMapClickListener中存在Null对象错误(此错误);mMap.setOnMapClickListener中存在Null对象错误(此错误); package com.example.mukesh.airpollution; 导入android.graphics.Color; 导入android.os.Bund,android,google-maps,android-maps-v2,android-maps,Android,Google Maps,Android Maps V2,Android Maps,mMap.setOnMapClickListener中存在Null对象错误(此错误); package com.example.mukesh.airpollution; 导入android.graphics.Color; 导入android.os.Bundle; 导入android.support.v4.app.FragmentActivity; 导入com.google.android.gms.maps.CameraUpdateFactory; 导入com.google.android.gms
package com.example.mukesh.airpollution;
导入android.graphics.Color;
导入android.os.Bundle;
导入android.support.v4.app.FragmentActivity;
导入com.google.android.gms.maps.CameraUpdateFactory;
导入com.google.android.gms.maps.GoogleMap;
导入com.google.android.gms.maps.GoogleMap.OnMapClickListener;
导入com.google.android.gms.maps.MapFragment;
导入com.google.android.gms.maps.OnMapReadyCallback;
导入com.google.android.gms.maps.model.CameraPosition;
导入com.google.android.gms.maps.model.LatLng;
导入com.google.android.gms.maps.model.LatLngBounds;
导入com.google.android.gms.maps.model.Polygon;
导入com.google.android.gms.maps.model.polygonooptions;
导入com.google.maps.android.PolyUtil;
导入java.util.List;
导入java.util.ArrayList;
公共类映射活动扩展了FragmentActivity
实现OnMapClickListener、OnMapReadyCallback{
//最终int RQS_GooglePlayServices=1;
私有谷歌地图;
//私人谷歌地图谷歌地图;
布尔标记单击;
多克隆选择;
多边形;
@凌驾
创建时受保护的void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_映射);
//获取SupportMapFragment,并在地图准备好使用时收到通知。
//SupportMapFragment mapFragment=(SupportMapFragment)getSupportFragmentManager()
//.findFragmentById(R.id.map);
//getMapAsync(这个);
MapFragment MapFragment=(MapFragment)getFragmentManager().findFragmentById(R.id.map);
getMapAsync((OnMapReadyCallback)this);
mMap.setOnMapClickListener(此);
//MapFragment MapFragment=(MapFragment)getFragmentManager().findFragmentById(R.id.map);
//getMapAsync(这个);
}
@凌驾
4月1日公开作废(谷歌地图谷歌地图)
{
mMap=谷歌地图;
ArrayList PolyOnlist=新的ArrayList();
多边形=mMap.addPolygon(新多边形选项()
添加(新LatLng(28.555335,76.798553)、新LatLng(28.830117,76.935883)、新LatLng(28.882919,77.080078)、新LatLng(28.868489,77.220154)、新LatLng(28.714438,77.328644)、新LatLng(28.519141,77.3698434)、(新LatLng(28.399615,77.196808))、(新LatLng(28.555335,76.798553))
.strokeColor(颜色.红色)
//.fillColor(颜色.蓝色)
//
);
//ArrayList PolyOnlist=新的ArrayList();
多边形p1=mMap.addPolygon(新多边形选项()
.添加(新LatLng(28.882919,77.080078)、新LatLng(28.752972,77.078705)、新LatLng(28.714438,77.328644)、新LatLng(28.868489,77.220154)、新LatLng(28.882919,77.080078))
.strokeColor(颜色.红色)
.fillColor(Color.BLUE));
//ArrayList PolyOnlist=新的ArrayList();
多边形p2=mMap.addPolygon(新多边形选项()
.添加(新LatLng(28.882919,77.080078)、新LatLng(28.752972,77.078705)、新LatLng(28.830117,76.935883)、新LatLng(28.882919,77.080078))
.strokeColor(颜色.红色)
//.fillColor(颜色.蓝色)
);
多边形p3=mMap.addPolygon(新多边形选项()
.添加(新LatLng(28.555335,76.798553)、新LatLng(28.752972,77.078705)、新LatLng(28.830117,76.935883)、新LatLng(28.555335,76.798553))
.strokeColor(颜色.红色)
//.fillColor(颜色.蓝色)
);
最终LatLng悉尼=新LatLng(28.6139,77.2090);
最终LatLng MOUNTAIN_VIEW=新LatLng(28.6387,77.0941);
最终LatLngBounds.Builder边界;
最终板条s=新板条(28.643353,77.446747);
bounds=新的LatLngBounds.Builder();
包括(新板条(28.643353,77.446747));
包括(新板条(28.509488,76.823273));
mMap.moveCamera(CameraUpdateFactory.newLatLngZoom(悉尼,10));
mMap.animateCamera(CameraUpdateFactory.zoomIn());
mMap.animateCamera(CameraUpdateFactory.zoomTo(10),2000,空);
CameraPosition CameraPosition=新建CameraPosition.Builder()
.目标(山景)
.zoom(10)
.轴承(90)
.倾斜(30)
.build();
mMap.animateCamera(CameraUpdateFactory.newCameraPosition(cameraPosition));
mMap.setOnCameraChangeListener(新GoogleMap.OnCameraChangeListener(){
@凌驾
CameraChange上的公共无效(CameraPosition arg0){
//移动摄像机。
//googleMap.moveCamera(CameraUpdateFactory.newLatLngBounds(bounds.build(),
如果(arg0.zoom>=10);
else if(arg0.zoom<9){
CameraPosition cameraPosition1=新建CameraPosition.Builder()
.target(MOUNTAIN_VIEW)//将地图中心设置为MOUNTAIN VIEW
.zoom(12)//设置缩放
.bearing(90)//将相机的方向设置为东
.tilt(30)//将相机的倾斜设置为30度
.build();//从生成器创建CameraPosition
mMap.animateCamera(CameraUpdateFactory.newCameraPosition(cameraPosition1));
}
//移除监听器以防止摄像机移动时位置重置。
package com.example.mukesh.airpollution;
import android.graphics.Color;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.GoogleMap.OnMapClickListener;
import com.google.android.gms.maps.MapFragment;
import com.google.android.gms.maps.OnMapReadyCallback;
import com.google.android.gms.maps.model.CameraPosition;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.LatLngBounds;
import com.google.android.gms.maps.model.Polygon;
import com.google.android.gms.maps.model.PolygonOptions;
import com.google.maps.android.PolyUtil;
import java.util.List;
import java.util.ArrayList;
public class MapsActivity extends FragmentActivity
implements OnMapClickListener, OnMapReadyCallback {
//final int RQS_GooglePlayServices = 1;
private GoogleMap mMap;
//private GoogleMap googleMap;
boolean markerClicked;
PolygonOptions polygonOptions;
Polygon polygon;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_maps);
// Obtain the SupportMapFragment and get notified when the map is ready to be used.
// SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
// .findFragmentById(R.id.map);
// mapFragment.getMapAsync(this);
MapFragment mapFragment = (MapFragment) getFragmentManager().findFragmentById(R.id.map);
mapFragment.getMapAsync((OnMapReadyCallback) this);
mMap.setOnMapClickListener(this);
// MapFragment mapFragment = (MapFragment) getFragmentManager().findFragmentById(R.id.map);
// mapFragment.getMapAsync(this);
}
@Override
public void onMapReady(GoogleMap googleMap)
{
mMap = googleMap;
ArrayList<Polygon> polygonList = new ArrayList<>();
Polygon polygon = mMap.addPolygon(new PolygonOptions()
.add(new LatLng(28.555335, 76.798553), new LatLng(28.830117, 76.935883), new LatLng(28.882919, 77.080078), new LatLng(28.868489, 77.220154), new LatLng(28.714438, 77.328644), new LatLng(28.519141, 77.3698434), (new LatLng(28.399615, 77.196808)), (new LatLng(28.555335, 76.798553)))
.strokeColor(Color.RED)
// .fillColor(Color.BLUE)
//
);
// ArrayList<Polygon> polygonList = new ArrayList<>();
Polygon p1 = mMap.addPolygon(new PolygonOptions()
.add(new LatLng(28.882919, 77.080078), new LatLng(28.752972, 77.078705), new LatLng(28.714438, 77.328644), new LatLng(28.868489, 77.220154),new LatLng(28.882919, 77.080078))
.strokeColor(Color.RED)
.fillColor(Color.BLUE));
// ArrayList<Polygon> polygonList = new ArrayList<>();
Polygon p2 = mMap.addPolygon(new PolygonOptions()
.add(new LatLng(28.882919, 77.080078), new LatLng(28.752972, 77.078705), new LatLng(28.830117, 76.935883), new LatLng(28.882919, 77.080078))
.strokeColor(Color.RED)
//.fillColor(Color.BLUE)
);
Polygon p3 = mMap.addPolygon(new PolygonOptions()
.add(new LatLng(28.555335, 76.798553), new LatLng(28.752972, 77.078705), new LatLng(28.830117, 76.935883), new LatLng(28.555335, 76.798553))
.strokeColor(Color.RED)
// .fillColor(Color.BLUE)
);
final LatLng SYDNEY = new LatLng(28.6139,77.2090);
final LatLng MOUNTAIN_VIEW = new LatLng(28.6387, 77.0941);
final LatLngBounds.Builder bounds;
final LatLng s=new LatLng(28.643353 ,77.446747);
bounds = new LatLngBounds.Builder();
bounds.include(new LatLng(28.643353, 77.446747));
bounds.include(new LatLng(28.509488, 76.823273));
mMap.moveCamera(CameraUpdateFactory.newLatLngZoom(SYDNEY, 10));
mMap.animateCamera(CameraUpdateFactory.zoomIn());
mMap.animateCamera(CameraUpdateFactory.zoomTo(10), 2000, null);
CameraPosition cameraPosition = new CameraPosition.Builder()
.target(MOUNTAIN_VIEW)
.zoom(10)
.bearing(90)
.tilt(30)
.build();
mMap.animateCamera(CameraUpdateFactory.newCameraPosition(cameraPosition));
mMap.setOnCameraChangeListener(new GoogleMap.OnCameraChangeListener() {
@Override
public void onCameraChange(CameraPosition arg0) {
// Move camera.
// googleMap.moveCamera(CameraUpdateFactory.newLatLngBounds(bounds.build(),
if (arg0.zoom >= 10) ;
else if (arg0.zoom < 9) {
CameraPosition cameraPosition1 = new CameraPosition.Builder()
.target(MOUNTAIN_VIEW) // Sets the center of the map to Mountain View
.zoom(12) // Sets the zoom
.bearing(90) // Sets the orientation of the camera to east
.tilt(30) // Sets the tilt of the camera to 30 degrees
.build(); // Creates a CameraPosition from the builder
mMap.animateCamera(CameraUpdateFactory.newCameraPosition(cameraPosition1));
}
// Remove listener to prevent position reset on camera move.
// googleMap.setOnCameraChangeListener(googleMap.moveCamera(CameraUpdateFactory.newLatLngBounds(bounds.build(),12)));
//googleMap.(latlngbounds);
}
}
);
}
@Override
public void onMapClick(LatLng point) {
Polygon polygon = mMap.addPolygon(new PolygonOptions()
.add(new LatLng(0, 0), new LatLng(0, 5), new LatLng(3, 5), new LatLng(0, 0)));
Polygon p1 = mMap.addPolygon(new PolygonOptions()
.add(new LatLng(0, 0), new LatLng(0, 5), new LatLng(3, 5), new LatLng(0, 0)));
Polygon p2 = mMap.addPolygon(new PolygonOptions()
.add(new LatLng(0, 0), new LatLng(0, 5), new LatLng(3, 5), new LatLng(0, 0)));
Polygon p3 = mMap.addPolygon(new PolygonOptions()
.add(new LatLng(0, 0), new LatLng(0, 5), new LatLng(3, 5), new LatLng(0, 0)));
//CHANGE POLYGON SPECIFICATIONS
//ADD ALL POLYGONS
List<LatLng> points = polygon.getPoints();
List<LatLng> points1 = p1.getPoints();
List<LatLng> points2 = p2.getPoints();
List<LatLng> points3 = p3.getPoints();
if (PolyUtil.containsLocation(point, points, false)) {
//Do SOMETHING...
} else if (PolyUtil.containsLocation(point, points1, false)) {
//Do SOMETHING...
}
if (PolyUtil.containsLocation(point, points2, false)) {
//Do SOMETHING...
}
if (PolyUtil.containsLocation(point, points3, false)) {
//Do SOMETHING...
}
}