IllegalStateException异常Java的谷歌地图标记 [英] IllegalStateException Java Google Maps marker
本文介绍了IllegalStateException异常Java的谷歌地图标记的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我想创建的谷歌地图标记的基础上，如果飞机已离开呢。我已经确认并直到它试图创建飞机一切正常没事。
I am trying to create markers on google maps, based on if the plane has departed yet. I have checked and everything works okay until it tries to create the planes.
下面是code：
package com.fly.plane;
import java.sql.Time;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Timer;
import java.util.TimerTask;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import com.fly.plane.R;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.MapFragment;
import com.google.android.gms.maps.MapView;
import com.google.android.gms.maps.Projection;
import com.google.android.gms.maps.SupportMapFragment;
import com.google.android.gms.maps.model.BitmapDescriptorFactory;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.Marker;
import com.google.android.gms.maps.model.MarkerOptions;
import android.R.array;
import android.app.ListActivity;
import android.app.ProgressDialog;
import android.graphics.Point;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.Handler;
import android.os.SystemClock;
import android.support.v4.app.FragmentActivity;
import android.text.format.DateFormat;
import android.util.Log;
import android.view.View;
import android.view.animation.Interpolator;
import android.view.animation.LinearInterpolator;
import android.widget.TextView;
public class MyMapActivity extends ListActivity {
private ProgressDialog pDialog;
// URL to get data JSON
private static String url = "http://edmundgentle.com/snippets/flights/api.php";
// JSON Node speeds
private static final String TAG_data = "data";
private static final String TAG_BEARING = "bearing";
private static final String TAG_SPEED = "speed";
private static final String TAG_ARR = "arr";
private static final String TAG_ARR_TIME = "time";
private static final String TAG_ARR_LAT = "lat";
private static final String TAG_ARR_LON = "lon";
private static final String TAG_DEP = "dep";
private static final String TAG_DEP_TIME = "time";
private static final String TAG_DEP_LAT = "lat";
private static final String TAG_DEP_LON = "lon";
// data JSONArray
JSONArray data = null;
// Hashmap for ListView
ArrayList<HashMap<String, Double>> contactList;
// Hashmap for ListView
ArrayList<Double> ct;
List<Marker> markers = new ArrayList<Marker>();
//final Handler handler;
private GoogleMap mMap;
public static final LatLng dest(String alt,String aln, int i){
final double latitude = Double.parseDouble(alt);
final double longitude = Double.parseDouble(aln);
return new LatLng(latitude, longitude);
}
public double latt = -15.48169437461;
public double lng = -15.48169437461;
public ArrayList<Integer> dLat;
public String[] markerList;
public String dlat;
public String dlon;
public String alat;
public String alon;
private int count;
public boolean wait = true;
//private Button startB;
public TextView text;
Timer timing;
double time = 600;
double timm = 1;
long timer = 18000000;
long newTime;
TextView tv, test;
Thread t;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_my_map);
contactList = new ArrayList<HashMap<String, Double>>();
ct = new ArrayList<Double>();
//ListView lv = getListView();
//create markers
new Getdata().execute();
// timer showing time of day in fast time
t = new Thread() {
@Override
public void run() {
try {
while (!isInterrupted()) {
Thread.sleep(600);
runOnUiThread(new Runnable() {
@Override
public void run() {
timer = timer +60000;
if (timer >= 64000000) timer = 18000000;
newTime = timer;
// update TextView here!
//String time = "HH:mm:ss";
//tv.setText(DateFormat.format(time , timer));
tv.setText(Double.toString(time));
test.setText(Double.toString(timm));
//tv.setText(Double.toString(contactList.get(20).get("time")));
//Timer();
}
});
}
} catch (InterruptedException e) {
}
}
};
tv = new TextView(this);
test = new TextView(this);
tv=(TextView)findViewById(R.id.timer);
test=(TextView)findViewById(R.id.test);
// run the mUpdateUITimerTask's run() method in 10 seconds from now
}
// animate each plane
public void animateMarker(final Marker marker , final LatLng toPosition,
final boolean hideMarker, final double spd) {
float speed = (float) spd;// Float.parseFloat(spd);
final Handler handler = new Handler();
final long start = SystemClock.uptimeMillis();
Projection proj = mMap.getProjection();
Point startPoint = proj.toScreenLocation(marker.getPosition());
final LatLng startLatLng = proj.fromScreenLocation(startPoint);
final float duration = 10 * speed;
final Interpolator interpolator = new LinearInterpolator();
handler.post(new Runnable() {
@Override
public void run() {
long elapsed = SystemClock.uptimeMillis() - start;
float t = interpolator.getInterpolation((float) ((float) elapsed
/ duration));
double lng = t * toPosition.longitude + (1 - t)
* startLatLng.longitude;
double lat = t * toPosition.latitude + (1 - t)
* startLatLng.latitude;
marker.setPosition(new LatLng(lat, lng));
if (t < 1.0) {
// Post again 16ms later.
handler.postDelayed(this, 16);
} else {
handler.postDelayed(this, 16);
if (hideMarker) {
marker.setVisible(false);
} else {
marker.setVisible(true);
}
}
}
});
}
public void Timer(){
//TimerTask tasknew = new TimerTask();
timing = new Timer();
timing.schedule(new CreateMarker(), 1000, 1000);
}
public void DrawMarker(){
mMap = ((MapFragment) getFragmentManager().findFragmentById(R.id.map)).getMap();
//animateMarker(markers.get(i), dest(alt,aln,i) , true, spd);
/*Marker marker = mMap.addMarker(new MarkerOptions()
.position(new LatLng(0, 0))
.title("Hello world")
.icon(BitmapDescriptorFactory.fromResource(R.drawable.planemarker)));
//markers.add(marker);
//animateMarker(markers.get(i), dest(alt,aln,i) , true, spd);*/
}
public String calcCurPos(double curlat, double curlon, double deslat, double deslon, double avgSpd, double bearing){
double distance = avgSpd * 0.0167;
// check if degrees or radians
//deslat = distance * Math.cosh(bearing);
bearing = bearing * Math.PI / 180;
int radius = 6371;
double nextLat = Math.asin(Math.sin(curlat)* Math.cos(distance/radius)
+ Math.cos(curlat)*Math.sin(distance/radius)*Math.cos(bearing));
double nextLon = curlon + Math.atan2(Math.sin(bearing)* Math.sin(distance/ radius)
* Math.cos(curlat), Math.cos(distance/radius)-Math.sin(curlat) * Math.sin(nextLat));
nextLat = (nextLat * 180) / Math.PI;
nextLon = (nextLon * 180) / Math.PI;
/**
* Warning might want to convert them to string prior to return.
*/
return nextLat + ";" + nextLon;
}
public class CreateMarker extends TimerTask{
@Override
public void run() {
// TODO Auto-generated method stub
if (time >= 2400){
time=0;
}
time += 500;
//mMap = ((MapFragment) getFragmentManager().findFragmentById(R.id.map)).getMap();
for (int i =0; i < 100;i++){
// get data from array list
double depLat = contactList.get(i).get("dlat");
double depLon = contactList.get(i).get("dlon");
double arLat = contactList.get(i).get("alat");
double arLon = contactList.get(i).get("alon");
double spd = contactList.get(i).get("speed");
double dTime = contactList.get(i).get("time");
double curLat = contactList.get(i).get("clat");
double curLon = contactList.get(i).get("clon");
double bearing = contactList.get(i).get("bearing");
//int dTime = Integer.parseInt(dtime);
double oldLat = curLat;
if (time >= dTime)
{
if (curLat > arLat || curLat < 0){
String latlng = calcCurPos(curLat, curLon, arLat, arLon ,spd, bearing );
String[] values = latlng.split(";");
curLat = Double.parseDouble(values[0]);
curLon = Double.parseDouble(values[1]);
final LatLng position = new LatLng(curLat,curLon);
//DrawMarker();
//animateMarker(markers.get(i), position , true, spd);
try{
if (markers != null || markers.get(i) == null){
//timm += 1;
timm += 1;
final Marker marker = mMap.addMarker(new MarkerOptions()
.position(new LatLng(0, 0))
.title("Hello world")
.icon(BitmapDescriptorFactory.fromResource(R.drawable.planemarker)));
markers.add(marker);
//DrawMarker();
//Marker marker = mMap.addMarker(mo);
//animateMarker(markers.get(i), dest(alt,aln,i) , true, spd);
}
else{
//Marker marker = markers.get(i);
//marker.setPosition(position);
//animateMarker(markers.get(i), position , true, spd);
}
}
catch(NullPointerException npe)
{
//do something else
}
}
}
HashMap<String, String> contact = new HashMap<String, String>();
contact.put("bearing", bearing);
contact.put("speed", spd);
contact.put("time", dtime);
contact.put("alat", alt);
contact.put("alon", aln);
contact.put("dlat", dlat);
contact.put("dlon", dlon);
contact.put("clat", dlat);
contact.put("clon", dlon);
contactList.add(contact);*/
}
//return null;
}
}
/**
* Async task class to get json by making HTTP call
* */
private class Getdata extends AsyncTask<Void, Void, Void> {
@Override
protected void onPreExecute() {
super.onPreExecute();
// Showing progress dialog
pDialog = new ProgressDialog(MyMapActivity.this);
pDialog.setMessage("Please wait...");
pDialog.setCancelable(false);
pDialog.show();
}
@Override
protected Void doInBackground(Void... arg0) {
// Creating service handler class instance
HTTPHandler sh = new HTTPHandler();
// Making a request to url and getting response
String jsonStr = sh.makeServiceCall(url, HTTPHandler.GET);
Log.d("Response: ", "> " + jsonStr);
boolean limit = false;
if (jsonStr != null || limit == false) {
try {
JSONObject jsonObj = new JSONObject(jsonStr);
// Getting JSON Array node
data = jsonObj.getJSONArray(TAG_data);
// looping through All data
for (int i = 0; i < data.length(); i++) {
JSONObject c = data.getJSONObject(i);
String bearing = c.getString(TAG_BEARING);
String spd = c.getString(TAG_SPEED);
// departure node is JSON Object
JSONObject dep = c.getJSONObject(TAG_DEP);
String dtime = dep.getString(TAG_DEP_TIME);
//String dlat = dep.getString(TAG_DEP_LAT);
//String dlon = dep.getString(TAG_DEP_LON);
dlat = dep.getString(TAG_DEP_LAT);
dlon = dep.getString(TAG_DEP_LON);
// replace : and last 2 0's from departure time
dtime = dtime.replaceAll(":","");
//dtime.replaceAll(";","");
dtime = dtime.substring(0,dtime.length()-2);
// arrival node is JSON Object
JSONObject arr = c.getJSONObject(TAG_ARR);
String alt = arr.getString(TAG_ARR_LAT);
String aln = arr.getString(TAG_ARR_LON);
// convert data positions to doubles for Google Maps + stuff
double brng = Double.parseDouble(bearing);
brng = brng * Math.PI / 180;
double speed = Double.parseDouble(spd);
//double brng = Double.parseDouble(bearing);
double dLatitude = Double.parseDouble(dlat);
double dLongitude = Double.parseDouble(dlon);
double aLatitude = Double.parseDouble(alt);
double aLongitude = Double.parseDouble(aln);
double cLatitude = Double.parseDouble(dlat);
double cLongitude = Double.parseDouble(dlon);
double dtme = Double.parseDouble(dtime);
// tmp hashmap for single contact
HashMap<String, Double> contact = new HashMap<String, Double>();
contact.put("bearing", brng);
contact.put("speed", speed);
contact.put("time", dtme);
contact.put("alat", aLatitude);
contact.put("alon", aLongitude);
contact.put("dlat", dLatitude);
contact.put("dlon", dLongitude);
contact.put("clat", cLatitude);
contact.put("clon", cLongitude);
// adding contact to contact list
contactList.add(contact);
if (i== data.length()){
wait = false;
}
}
} catch (JSONException e) {
e.printStackTrace();
}
} else {
Log.e("ServiceHandler", "Couldn't get any data from the url");
}
return null;
}
// spawns planes when json loaded
@Override
protected void onPostExecute(Void result) {
Timer();
t.start();
super.onPostExecute(result);
// Dismiss the progress dialog
if (pDialog.isShowing())
pDialog.dismiss();
// use plane api for latlon
mMap = ((MapFragment) getFragmentManager().findFragmentById(R.id.map)).getMap();
}}
}
以下是错误codeS：
Here is the error codes:
02-26 18:51:21.747: W/dalvikvm(17225): threadid=21: thread exiting with uncaught exception (group=0x41930898)
02-26 18:51:21.757: E/AndroidRuntime(17225): FATAL EXCEPTION: Timer-0
02-26 18:51:21.757: E/AndroidRuntime(17225): java.lang.IllegalStateException: Not on the main thread
02-26 18:51:21.757: E/AndroidRuntime(17225): at maps.k.o.b(Unknown Source)
02-26 18:51:21.757: E/AndroidRuntime(17225): at maps.i.g.b(Unknown Source)
02-26 18:51:21.757: E/AndroidRuntime(17225): at maps.e.al.a(Unknown Source)
02-26 18:51:21.757: E/AndroidRuntime(17225): at eif.onTransact(SourceFile:167)
02-26 18:51:21.757: E/AndroidRuntime(17225): at android.os.Binder.transact(Binder.java:347)
02-26 18:51:21.757: E/AndroidRuntime(17225): at com.google.android.gms.maps.internal.IGoogleMapDelegate$a$a.addMarker(Unknown Source)
02-26 18:51:21.757: E/AndroidRuntime(17225): at com.google.android.gms.maps.GoogleMap.addMarker(Unknown Source)
02-26 18:51:21.757: E/AndroidRuntime(17225): at com.fly.plane.MyMapActivity$CreateMarker.run(MyMapActivity.java:298)
02-26 18:51:21.757: E/AndroidRuntime(17225): at java.util.Timer$TimerImpl.run(Timer.java:284)
该CreateMarker类处理收集和数据从API比较检查，并应酿出的飞机，如果他们的出发时间是一样的一天的时间（只是一个计数器）。
The CreateMarker class handles the checks for gathering and comparing the data from the API, and should spawn planes if their departure time is the same as the time of day (just a counter).
的错误似乎朝它不喜欢的标记在类中创建了点，但我已经尝试创建主类中的方法产卵的标记，只是运行在CreateMarker类方法时，飞机应该是绘制，但我得到的错误在
The error seems to point towards it not liking the marker being created in the class, but i have tried creating a method in the main class to spawn the marker, and just running that method from the CreateMarker class when a plane should be drawn, but i get errors in that.
任何帮助将是AP preciated。
Any help would be appreciated.
菲尔
推荐答案
裹
final Marker marker = mMap.addMarker(new MarkerOptions()
.position(new LatLng(0, 0))
.title("Hello world")
.icon(BitmapDescriptorFactory.fromResource(R.drawable.planemarker)));
markers.add(marker);
在<一个href=\"http://developer.android.com/reference/android/app/Activity.html#runOnUiThread%28java.lang.Runnable%29\"相对=nofollow> runOnUiThread ：
runOnUiThread(new Runnable() {
@Override
public void run() {
final Marker marker = mMap.addMarker(new MarkerOptions()
.position(new LatLng(0, 0))
.title("Hello world")
.icon(BitmapDescriptorFactory.fromResource(R.drawable.planemarker)));
markers.add(marker);
}
});
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