谷歌地图v2挂起时，我点击缩放按钮地图获得挂起-Googlemapv2hangswhenIclickonthezoombuttonmapgethang

I have a JSON file in which I have around 1800 paths. In 1 path there are several points like a single has.

我有一个JSON文件，其中有大约1800条路径。在一条路径中有几个点。

I have done this code

我做了这个代码

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.text.DecimalFormat;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.Iterator;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import android.app.ProgressDialog;
import android.content.Intent;
import android.graphics.Color;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.TextView;
import android.widget.Toast;

import com.golfcart.bean.VillagesListBean;
import com.golfcart.utils.JSONParser;
import com.golfcart.utils.UtilFunction;
import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.SupportMapFragment;
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.LatLngBounds;
import com.google.android.gms.maps.model.MarkerOptions;
import com.google.android.gms.maps.model.Polyline;
import com.google.android.gms.maps.model.PolylineOptions;

public class MyNavigationGolfcart extends FragmentActivity implements OnClickListener {

    private GoogleMap googleMap;
    double sourcelat, sourcelng, destlat, destlng;
    private String result1;
    boolean flag = true;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.mynav);
        addMap();

        new Thread(new Runnable() {

            @Override
            public void run() {
                // TODO Auto-generated method stub
                getPath();
            }
        }).start();
    }

    private void getPath() {
        BufferedReader br;
        try {
            br = new BufferedReader(new InputStreamReader(getAssets()
                    .open("finalpath.txt")));
            String strLine = null;
            String s = "";
            while ((strLine = br.readLine()) != null) {
                s = s + strLine;
            }
            JSONObject json = new JSONObject(s);

            if (json != null) {
                JSONArray features = json.getJSONArray("features");
                for (int i = 0; i  0) {

                            MyNavigationGolfcart.this.runOnUiThread(new Runnable() {

                                @Override
                                public void run() {
                                    if (flag) {
                                        try {
                                            googleMap.moveCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(array.getJSONArray(0).getDouble(1), array.getJSONArray(0).getDouble(0)), 12));
                                        } catch (JSONException e) {
                                            // TODO Auto-generated catch block
                                            e.printStackTrace();
                                        }
                                        flag = false;
                                    }
                                    for (int z = 0; z 

    PolylineOptions polylineOptions;
    List totalLanLngPoints = new ArrayList();
    for (int z = 0; z