我正在尝试使用服务更新Google地图上的标记，但是当我使用“setParkingSpotMarker”函数为列表中的每个项目添加标记时，我收到错误“java.lang.IllegalStateException：not on the main线程“
在服务-DataUpdateService内的循环中调用函数“setParkingSpotMarker”。
我不知道如何更改我的代码，因此它会更新主线程上的标记。我已经阅读了一些有关该帖子的帖子，但不知道如何在我的代码中更改它。
这是服务：
package com.example.sailon;
import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.os.Binder;
import android.os.IBinder;
import android.util.Log;
import java.util.ArrayList;
import java.util.Timer;
import java.util.TimerTask;
import com.google.android.gms.maps.model.CameraPosition;
import com.google.android.gms.maps.model.LatLng;
public class DataUpdateService extends Service {
Timer myTimer = new Timer();
MyTimerTask myTask = new MyTimerTask();
MyMap mymap;
String teamID;
static LatLng teamLocation;
ArrayList<TeamsList> teamsList= new ArrayList<TeamsList>() ;
public ArrayList<UnitInHeatForMap> unitswithteam= new ArrayList<UnitInHeatForMap>();
String action;
Context fromContext;
String CompName;
String heatNum;
boolean isSailor;
String usermail;
GPSTracker gps;
private final IBinder mBinder = new LocalBinder();
@Override
public void onCreate() {
super.onCreate();
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
Log.d("PS", "DataUpdateService onStartCommand");
return Service.START_NOT_STICKY;
}
@Override
// return thee instance of the local binder to the activity
public IBinder onBind(Intent intent) {
Log.d("PS", "DataUpdateService onBind");
return mBinder;
}
public class LocalBinder extends Binder {
DataUpdateService getService() {
Log.d("PS", "DataUpdateService LocalBinder onBind");
return DataUpdateService.this;
}
}
public class MyTimerTask extends TimerTask {
@Override
public void run() {
String unitToUpdate= mymap.getUnitToUpdate (CompName,heatNum,usermail);
Log.d("NY","CompName " +CompName);
Log.d("NY","heatNum " +heatNum);
Log.d("NY","usermail " +usermail);
Log.d("NY","unitToUpdate" +unitToUpdate);
Log.d("NY","isSailor" +isSailor);
if (isSailor){
gps = new GPSTracker(DataUpdateService.this,unitToUpdate );
if( ! (gps.canGetLocation())){
gps.showSettingsAlert();
}
}
unitswithteam=mymap.refresh (CompName,heatNum);
int j= unitswithteam.size();
for (int i=0; i<j;i++){
teamID=unitswithteam.get(i).getTeamID();
Log.d("NY","teamID "+i+teamID);
UnitsInHeats us=unitswithteam.get(i).getUnit();
teamLocation = new LatLng(us.getLat(),us.getLng() );
Log.d("NY","team location "+i + " "+us.getLat());
mymap.setParkingSpotMarker(teamLocation,teamID);
if (i==(j-1)){
CameraPosition secound =new CameraPosition.Builder()
.target(teamLocation)
.zoom(15.5f)
.bearing(300)
.tilt(50)
.build();
mymap.moveMyMapCamera(secound);
}
}
}
}
// called from the activity
public void MapUpdateFromService(Context context, MyMap map, final String action,
String CompName, String heatNum, boolean isSailor , String usermail) {
Log.d("PS", "DataUpdateService MapUpdateFromService");
this.mymap = map;
this.action = action;
this.CompName=CompName;
this.heatNum=heatNum;
this.isSailor=isSailor;
this.usermail=usermail;
// this command activate the run function from the inner class MyTimerTask every 5 seconds.
myTimer.schedule(myTask,0,5000);
}
public void onDestroy() {
super.onDestroy();
// cancel the scheduler.
myTimer.cancel();
}
}
这是调用服务的活动：
package com.example.sailon;
import java.util.ArrayList;
import com.google.android.gms.maps.MapFragment;
import com.google.android.gms.maps.model.CameraPosition;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.Marker;
import android.app.ActionBar;
import android.app.Activity;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.ServiceConnection;
import android.os.Bundle;
import android.os.IBinder;
import android.util.Log;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
public class Map extends Activity {
Bundle extras;
// private GoogleMap map;
static LatLng teamLocation;
//public static ArrayList<Teams> teams;
ArrayList<TeamsList> teamsList= new ArrayList<TeamsList>() ;
Marker mark;
double lat;
double lng;
GPSTracker gps;
String Location ;
String teamID;
String CompName;
MyMap mymap;
String heatNum;
String CompID;
boolean isSailor;
String usermail;
static LatLng BeerSheva = new LatLng(31.250919, 34.783916);
public ArrayList<UnitInHeatForMap> unitswithteam= new ArrayList<UnitInHeatForMap>();
// ArrayList<LatLng> List= new ArrayList<LatLng>() ;
DataUpdateService dbuService;
boolean dbuBound=false;// when service connected get true
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_map);
mymap= new MyMap(this,((MapFragment)getFragmentManager().findFragmentById(R.id.map)).getMap());
//map=((MapFragment)getFragmentManager().findFragmentById(R.id.map)).getMap();
extras = getIntent().getExtras();
CompName=extras.getString("CompName");
heatNum=extras.getString("heatNum");
isSailor=extras.getBoolean("isSailor");
usermail=extras.getString("usermail");
Log.d("CompName",CompName);
Log.d("heatNum",heatNum);
// get action bar
ActionBar actionBar = getActionBar();
// Enabling Up / Back navigation
actionBar.setDisplayHomeAsUpEnabled(true);
if (mymap!=null){
Log.d("PS", "map isnt null");
mymap.setMapType();
mymap.setMyLocationEnabled(true);
CameraPosition firstZom =new CameraPosition.Builder()
.target(BeerSheva)
.zoom(15.5f)
.bearing(300)
.tilt(50)
.build();
mymap.moveMyMapCamera(firstZom);
}
}
// serviceConnerction is an interface that must be implemented when using bound service
private ServiceConnection sConnection=new ServiceConnection() {
@Override
public void onServiceConnected(ComponentName name, IBinder service) {
Log.d("PS", "Map onServiceConnected");
DataUpdateService.LocalBinder binder=(DataUpdateService.LocalBinder)service;
dbuService=binder.getService();
Log.d("PS", "Map callupdate");
dbuService.MapUpdateFromService(Map.this,mymap,"ActionSearch",CompName,heatNum, isSailor,usermail);
dbuBound=true;
}
@Override
public void onServiceDisconnected(ComponentName name) {
Log.d("PS", "Map onServiceDisconnected");
dbuBound=false;
}
};
@Override
protected void onStart() {
super.onStart();
// Bind to DataUpdateService
Log.d("PS", "Map onStart");
Intent intent= new Intent(this,DataUpdateService.class);
bindService(intent,sConnection, Context.BIND_AUTO_CREATE);
}
@Override
protected void onStop() {
super.onStop();
// Unbind from the service
Log.d("PS", "Map onStop");
if(dbuBound){
unbindService(sConnection);
dbuBound=false;
}
}
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.activity_main_actions, menu);
return super.onCreateOptionsMenu(menu);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Take appropriate action for each action item click
switch (item.getItemId()) {
case R.id.logoutAction:
Intent i = new Intent(Map.this, MainActivity.class);
startActivity(i);
return true;
case R.id.VideoAction:
Intent intent = new Intent("android.media.action.VIDEO_CAMERA");
startActivity(intent);
return true;
case R.id.CallAction:
Intent call = new Intent(Intent.ACTION_DIAL);
startActivity(call);
return true;
default:
return super.onOptionsItemSelected(item);
}
}
}
这是地图的calss： 包com.example.sailon;
import android.content.Context;
import android.util.Log;
import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.model.BitmapDescriptorFactory;
import com.google.android.gms.maps.model.CameraPosition;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.MarkerOptions;
import com.parse.ParseException;
import java.util.ArrayList;
/**
* Created by Evyatar.m on 21/02/2015.
*/
public class MyMap {
private GoogleMap map;
static LatLng BeerSheva = new LatLng(31.250919, 34.783916);
String CompID;
String teamID;
String CompName;
String heatNum;
ArrayList<TeamsList> teamsList= new ArrayList<TeamsList>() ;
public ArrayList<UnitInHeatForMap> unitswithteam2= new ArrayList<UnitInHeatForMap>();
static LatLng teamLocation;
Model DB;
public MyMap(Context context, GoogleMap map) {
Log.d("PS", "MyMap builder");
DB = Model.getInstance(context);
this.map = map;
}
public String getUnitToUpdate (String CompName,String heatNum, String usermail){
String unit=null;
try {
CompID= DB.getCompIDByName(CompName);
} catch (com.parse.ParseException e) {
e.printStackTrace();
}
try {
unit= DB.getUnitToUpdateFromDB (CompID,heatNum, usermail);
} catch (ParseException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return unit;
}
public void setMyLocationEnabled(boolean b){
Log.d("PS", "MyMap set location enable");
map.setMyLocationEnabled(true);
}
public void setParkingSpotMarker(LatLng teamLocation,String teamID) {
Log.d("PS", "ParkingMap setParkinSpotMarker");
map.addMarker(new MarkerOptions()
.position(teamLocation)
.icon(BitmapDescriptorFactory.fromResource(R.drawable.iconsmall))
.title("Team " +teamID)).showInfoWindow();
}
public void setMapType(){
Log.d("PS", "MyMap setType");
map.setMapType(GoogleMap.MAP_TYPE_NORMAL);
}
public void moveMyMapCamera(CameraPosition firstZom) {
Log.d("PS", "MyMap moveParkingMapCamera");
map.moveCamera(CameraUpdateFactory.newCameraPosition(firstZom));
}
//updates all points on map
public ArrayList<UnitInHeatForMap> refresh (String CompName,String heatNum){
Log.d("PS", "MyMap refresh");
try {
CompID= DB.getCompIDByName(CompName);
} catch (com.parse.ParseException e) {
e.printStackTrace();
}
try {
DB.setUnitInHeatForMap (new Model.CallbackModel () {
@Override
public void done (ArrayList<UnitInHeatForMap> unitswithteam){
if (unitswithteam.size() >0){
unitswithteam2=unitswithteam;
}
}
}, CompID, heatNum,this);
} catch (ParseException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return unitswithteam2;
}
}
请帮帮我 谢谢!!! **
答案 0 :(得分：0)
run的{{1}}方法在后台线程上运行，您只能更新主线程上的地图。
所以你必须将以下Map UI更新代码包装到runOnUiThread(）
TimerTask你需要 mymap.setParkingSpotMarker(teamLocation,teamID);
if (i==(j-1)){
CameraPosition secound =new CameraPosition.Builder()
.target(teamLocation)
.zoom(15.5f)
.bearing(300)
.tilt(50)
.build();
mymap.moveMyMapCamera(secound);
}
来申请runOnUIThread，所以你需要把你的
Activity
在fromContext = ((Map)context);方法的第一行内。然后，您可以使用MapUpdateFromService runOnUiThread()方法拨打TimerTask。
run()这也是this problem的类似问题。