Androidでは、URLからデータを取得して地図上にプロットしようとしていますが、印刷するにも問題があります

Question

オンラインからデータを取得しようとしていますが、これはCSV形式です私はログの猫のモニターで非常に長いエラーが発生していますが、今はそれ以上表示することさえできません。データを返さず、地図上にプロットしようとするとクラッシュします。

ここのフェッチを実行スレッドのための私のコードです：ここで

package com.example.alexlevine.oceanapp; 

import android.os.AsyncTask; 

import com 
     .google.android.gms.maps.model.LatLng; 
import com.google.maps.android.heatmaps.HeatmapTileProvider; 
import com.google.maps.android.heatmaps.WeightedLatLng; 

import java.io.BufferedReader; 
import java.io.IOException; 
import java.io.InputStreamReader; 
import java.lang.reflect.Array; 
import java.net.MalformedURLException; 
import java.net.URL; 
import java.net.URLConnection; 
import java.util.ArrayList; 
import java.util.List; 

import static java.lang.Double.parseDouble; 

/** 
* Created by Alex Levine on 8/14/2017. 
*/ 

public class fetchFFDASData extends AsyncTask<URL, Void, List<String[]>> { 
    public static ArrayList<WeightedLatLng> ffdasArray; 

    protected List<String[]> doInBackground(URL... urls) { 

     String typekey; 

     ffdasArray = new ArrayList<WeightedLatLng>(); 
     Object[] ffdasObjects = null; 
     URL mUrl = null; 
     List<String[]> csvLine = new ArrayList<>(); 
     String[] content = null; 
     try { 
      //mUrl = new URL("http://hpcg.purdue.edu/FFDAS/Download/"+MainActivity.typeKey+"_yearly_date="+MainActivity.displayyear+"s-01-01-00_res=0.1_origin=-180,90_size=360,-180.csv"); 
      mUrl = new URL ("http://hpcg.purdue.edu/FFDAS/Download/" + MainActivity.typeKey + "_yearly_date=" + MainActivity.displayyear + "-01-01-00_res=0.1_origin=-180,90_size=360,-180.csv"); 
     } catch (MalformedURLException e) { 
      e.printStackTrace(); 
     } 
     try { 
      //assert mUrl != null; 
      URLConnection connection = mUrl.openConnection(); 
      BufferedReader br = new BufferedReader(new 
        InputStreamReader(connection.getInputStream())); 
      String line = ""; 
      while((line = br.readLine()) != null){ 
       content = line.split(","); 
       csvLine.add(content); 
      } 
      br.close(); 
     } catch (IOException e) { 
      e.printStackTrace(); 
     } 

     for(int i = 3; i < /*csvLine.size()*/7; i++) { 
      double lt = Double.parseDouble(csvLine.get(i)[0]); 
      double ln = Double.parseDouble(csvLine.get(i)[2]); 
      double w = Double.parseDouble(csvLine.get(i)[2]); 
      LatLng ltln = new LatLng(lt, ln); 
      WeightedLatLng wll = new WeightedLatLng(ltln, w); 
      ffdasArray.add(wll); 
     } 
     return null; 
    } 

    protected void onPostExecute(List<String[]> result) { 
     super.onPostExecute(result); 
     // 
     } 
    } 

は私の主な活動です：

package com.example.alexlevine.oceanapp; 

import android.app.Dialog; 
import android.support.v7.app.AppCompatActivity; 
import android.os.Bundle; 
import android.util.Log; 
import android.view.Menu; 
import android.view.MenuItem; 
import android.widget.AdapterView; 
import android.widget.ArrayAdapter; 
import android.widget.SeekBar; 
import android.widget.Spinner; 
import android.widget.TextView; 
import android.widget.Toast; 

import com.google.android.gms.common.ConnectionResult; 
import com.google.android.gms.common.GoogleApiAvailability; 
import com.google.android.gms.maps.CameraUpdate; 
import com.google.android.gms.maps.CameraUpdateFactory; 
import com.google.android.gms.maps.GoogleMap; 
import com.google.android.gms.maps.OnMapReadyCallback; 
import com.google.android.gms.maps.SupportMapFragment; 
import com.google.android.gms.maps.model.LatLng; 
import com.google.android.gms.maps.model.TileOverlayOptions; 
import com.google.maps.android.heatmaps.HeatmapTileProvider; 
import com.google.maps.android.heatmaps.WeightedLatLng; 

import android.view.View; 

import java.util.ArrayList; 
import java.util.List; 

import static com.example.alexlevine.oceanapp.R.id.seekBar; 

public class MainActivity extends AppCompatActivity implements OnMapReadyCallback { 

    public static SeekBar seekbar; 

    public static GoogleMap mGoogleMap; 
    private HeatmapTileProvider mProvider; 

    public static TextView minyear; 
    public static TextView maxyear; 
    public static TextView currentyeartext; 
    public static int displayyear; 
    public static boolean usingSOCAT; 
    public static String typeKey; 
    public static Spinner dropdown; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 
     if (googleServicesAvailable()) { 
      Toast.makeText(this, "Play services available", Toast.LENGTH_LONG).show();; 
      initMap(); 

      //get the spinner from the xml. 
      dropdown = (Spinner)findViewById(R.id.spinner); 
      //create a list of items for the spinner. 
      String[] items = new String[]{"Ocean CO2 Densities", "Land CO2 Emissions (all sources)", "Electricity CO2 Emissions", "Aviation CO2 Emissions", "Ocean Shipping CO2 Emissions"}; 
      //create an adapter to describe how the items are displayed, adapters are used in several places in android. 
      //There are multiple variations of this, but this is the basic variant. 
      ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_dropdown_item, items); 
      //set the spinners adapter to the previously created one. 
      dropdown.setAdapter(adapter); 


      currentyeartext = (TextView) findViewById(R.id.currentyear); 

      minyear = (TextView) findViewById(R.id.minyear); 
      maxyear = (TextView) findViewById(R.id.maxyear); 

      typeKey = "00totals"; 
      dropdown.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() { 
       public void onItemSelected(AdapterView<?> parent, View view, int position, long id) 
       { 
        switch (position) { 
         case 0: { 
          usingSOCAT = true; 
          displayyear = 1957; 
          seekbar.setMax(58); 
          minyear.setText("1957"); 
          maxyear.setText("2015"); 
          break; 
         } 
         case 1: { 
          usingSOCAT = false; 
          displayyear = 1997; 
          minyear.setText("1997"); 
          maxyear.setText("2010"); 
          seekbar.setMax(14); 
          typeKey = "00totals"; 
          break; 
         } 
         case 2: { 
          usingSOCAT = false; 
          displayyear = 1997; 
          minyear.setText("1997"); 
          maxyear.setText("2010"); 
          seekbar.setMax(14); 
          typeKey = "01elec"; 

          // Whatever you want to happen when the thrid item gets selected 
          break; 
         } 
         case 3: { 
          usingSOCAT = false; 
          displayyear = 1997; 
          minyear.setText("1997"); 
          maxyear.setText("2010"); 
          seekbar.setMax(14); 
          typeKey = "11aviation";; 
          // Whatever you want to happen when the thrid item gets selected 
          break; 
         } 
         case 4: { 
          usingSOCAT = false; 
          displayyear = 1997; 
          minyear.setText("1997"); 
          maxyear.setText("2010"); 
          seekbar.setMax(14); 
          typeKey = "12shipping"; 
          // Whatever you want to happen when the thrid item gets selected 
          break; 
         } 
        } 
       } 
       public void onNothingSelected(AdapterView<?> parent) 
       { 

       } 
      }); 

      seekbar = (SeekBar) findViewById(seekBar); 
      seekbar.setOnSeekBarChangeListener(
        new SeekBar.OnSeekBarChangeListener() { 

         @Override 
         public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) { 

          displayyear = progress + 1997; 
          if(usingSOCAT) 
          { 
           displayyear = progress + 1957; 
           new fetchSOCATData().execute(); 
           //createHeatMap(fetchSOCATData.co2array); 
          } 
          else 
          { 
           displayyear = progress + 1997; 
           new fetchFFDASData().execute(); 
           //List<WeightedLatLng> calledData = fetchFFDASData.ffdasArray; 
           //List<WeightedLatLng> tryit = new ArrayList<WeightedLatLng>(); 
           /*tryit.add(new WeightedLatLng(new LatLng(62, 42), 99)); 
           tryit.add(new WeightedLatLng(new LatLng(86, 42), 14)); 
           tryit.add(new WeightedLatLng(new LatLng(94, 42), 82)); 
           tryit.add(new WeightedLatLng(new LatLng(71, 42), 22)); 
           tryit.add(new WeightedLatLng(new LatLng(21, 42), 23));*/ 
           //createHeatMap(fetchFFDASData.ffdasArray); 
           minyear.setText((CharSequence) fetchFFDASData.ffdasArray); 
          } 
          currentyeartext.setText("Showing: " + displayyear); 
         } 

         @Override 
         public void onStartTrackingTouch(SeekBar seekBar) { 

         } 

         @Override 
         public void onStopTrackingTouch(SeekBar seekBar) { 

         } 
        }); 

      if(usingSOCAT) { 

      } 
      //new fetchSOCATData().execute(); 
      /*minyear = (TextView) findViewById(R.id.minyear); 
      maxyear = (TextView) findViewById(R.id.maxyear); 
      minyear.setText("1957"); 
      maxyear.setText("2015");*/ 

      //fetchSOCATData process = new fetchSOCATData(); 
      //process.execute(); 

     } else { 
      //No maps layout 
     } 
    } 

    //@Override 
    public void onNothingSelected(AdapterView<?> parent) { 

    } 

    public void initMap() { 
     SupportMapFragment mapFragment = (SupportMapFragment) this.getSupportFragmentManager() 
       .findFragmentById(R.id.mapFragment); 

     if(mapFragment != null) { 
      mapFragment.getMapAsync((OnMapReadyCallback)this); 
     } 
    } 

    public void createHeatMap(List<WeightedLatLng> dataset) 
    { 
     List<WeightedLatLng> locations = dataset; 
     /*mProvider = new HeatmapTileProvider.Builder().weightedData(locations).build(); 
     mProvider.setRadius(HeatmapTileProvider.DEFAULT_RADIUS); 
     mGoogleMap.addTileOverlay(new TileOverlayOptions().tileProvider(mProvider)); 
     mProvider = new HeatmapTileProvider(); 
     mProvider.setWeightedData(dataset); 
     mProvider = mProvider.build();*/ 

     //for (LatLng coordinate : coordinates) { 
      //WeightedLatLng weightedCoordinate = new WeightedLatLng(coordinate); 
      //com.google.maps.android.geometry.Point point = weightedCoordinate.getPoint(); 

      // Filter points at infinity 
      /* if (Double.isInfinite(point.x) || Double.isInfinite(point.y)) { 
       Log.w(TAG, "Attempted to add undefined point " + coordinate); 
       continue; 
      } 
      weightedCoordinates.add(weightedCoordinate);*/ 
     //} 

     mProvider = new HeatmapTileProvider.Builder() 
       .weightedData(dataset) 
       .opacity(0.5) 
       .build(); 
     mGoogleMap.addTileOverlay(new TileOverlayOptions().tileProvider(mProvider)); 
     Toast.makeText(this, "working", Toast.LENGTH_SHORT).show(); 
    } 

    public void onMapReady(GoogleMap googleMap) { 
     mGoogleMap = googleMap; 
     goToLocation(-65, -12); 
    } 

    public void goToLocation(double lat, double lng) { 
     LatLng ll = new LatLng(lat, lng); 
     CameraUpdate update = CameraUpdateFactory.newLatLng(ll); 
     mGoogleMap.moveCamera(update); 
    } 

    public boolean googleServicesAvailable() { 
     GoogleApiAvailability api = GoogleApiAvailability.getInstance(); 
     int isAvailable = api.isGooglePlayServicesAvailable(this); 
     if (isAvailable == ConnectionResult.SUCCESS) 
      return true; 
     else if (api.isUserResolvableError(isAvailable)) { 
      Dialog dialog = api.getErrorDialog(this, isAvailable, 0); 
      dialog.show(); 
     } else 
      Toast.makeText(this, "Can't connect to play services", Toast.LENGTH_LONG).show(); 
     return false; 
    } 


} 

私が持っているMainActivityの他のメソッドの呼び出しがあることに注意してくださいこの投稿には関連性がないため除外されているため、エラーではありません。しかし、誰かが私のコードを見て、これをデバッグするのを助けてくれますか？ありがとう！

EDITED：私はメモリの割り当てに関するいくつかの情報を見

が、私は唯一のテストに似たデータの4行を呼んでいるので、私は非常に巨大なオーバーフローが自分であることを疑う：ここでエラーが始まるから、私のログがありますこの。また、以前は、欠落しているヘッダについていくつかのタイプのエラーが表示されていましたが、もうそれを再作成することはできません。

08-29 01:05:22.311 11369-11378/com.example.alexlevine.oceanapp I/zygote: WaitForGcToComplete blocked for 9.873s for cause ObjectsAllocated 
08-29 01:05:22.311 11369-11378/com.example.alexlevine.oceanapp I/zygote: Forcing collection of SoftReferences for 32B allocation 
08-29 01:05:22.312 11369-11380/com.example.alexlevine.oceanapp I/zygote: WaitForGcToComplete blocked for 4.880s for cause HeapTrim 
08-29 01:05:22.312 11369-11369/com.example.alexlevine.oceanapp I/zygote: WaitForGcToComplete blocked for 5.472s for cause ObjectsAllocated 
08-29 01:05:22.312 11369-11856/com.example.alexlevine.oceanapp I/zygote: Waiting for a blocking GC ObjectsAllocated 
08-29 01:05:22.312 11369-11376/com.example.alexlevine.oceanapp I/zygote: Waiting for a blocking GC ObjectsAllocated 
08-29 01:05:22.312 11369-11378/com.example.alexlevine.oceanapp I/zygote: Waiting for a blocking GC Alloc 
08-29 01:05:22.312 11369-11379/com.example.alexlevine.oceanapp I/zygote: Waiting for a blocking GC ObjectsAllocated 
08-29 01:05:22.313 11369-11369/com.example.alexlevine.oceanapp W/zygote: Throwing OutOfMemoryError "Failed to allocate a 40 byte allocation with 8 free bytes and 8B until OOM, max allowed footprint 402653184, growth limit 402653184" 
08-29 01:05:22.313 11369-11856/com.example.alexlevine.oceanapp I/zygote: WaitForGcToComplete blocked for 27.854s for cause ObjectsAllocated 
08-29 01:05:22.313 11369-11856/com.example.alexlevine.oceanapp I/zygote: Starting a blocking GC Alloc 
08-29 01:05:22.313 11369-11376/com.example.alexlevine.oceanapp I/zygote: Waiting for a blocking GC ObjectsAllocated 
08-29 01:05:22.313 11369-11369/com.example.alexlevine.oceanapp I/zygote: Waiting for a blocking GC Alloc 
08-29 01:05:22.318 11369-11378/com.example.alexlevine.oceanapp I/zygote: Waiting for a blocking GC Alloc 
08-29 01:05:22.318 11369-11379/com.example.alexlevine.oceanapp I/zygote: Waiting for a blocking GC ObjectsAllocated 
08-29 01:05:23.535 11369-11856/com.example.alexlevine.oceanapp I/zygote: Clamp target GC heap from 389MB to 384MB 
08-29 01:05:23.535 11369-11856/com.example.alexlevine.oceanapp I/zygote: Alloc concurrent copying GC freed 0(0B) AllocSpace objects, 0(0B) LOS objects, 0% free, 383MB/384MB, paused 553us total 1.222s 
08-29 01:05:23.535 11369-11376/com.example.alexlevine.oceanapp I/zygote: WaitForGcToComplete blocked for 2.496s for cause ObjectsAllocated 
08-29 01:05:23.535 11369-11376/com.example.alexlevine.oceanapp W/zygote: Throwing OutOfMemoryError "Failed to allocate a 32 byte allocation with 8 free bytes and 8B until OOM, max allowed footprint 402653184, growth limit 402653184" (recursive case) 
08-29 01:05:23.536 11369-11378/com.example.alexlevine.oceanapp I/zygote: WaitForGcToComplete blocked for 1.223s for cause Alloc 
08-29 01:05:23.536 11369-11378/com.example.alexlevine.oceanapp I/zygote: Starting a blocking GC Alloc 
08-29 01:05:23.536 11369-11376/com.example.alexlevine.oceanapp W/zygote: "JDWP" daemon prio=5 tid=4 Runnable 
08-29 01:05:23.536 11369-11376/com.example.alexlevine.oceanapp W/zygote: | group="system" sCount=0 dsCount=0 flags=0 obj=0x12c467e8 self=0xa7c0bc00 
08-29 01:05:23.536 11369-11376/com.example.alexlevine.oceanapp W/zygote: | sysTid=11376 nice=0 cgrp=default sched=0/0 handle=0x96aea970 
08-29 01:05:23.536 11369-11376/com.example.alexlevine.oceanapp W/zygote: | state=R schedstat=(29027554235 2495307398 3483) utm=2703 stm=199 core=0 HZ=100 
08-29 01:05:23.536 11369-11376/com.example.alexlevine.oceanapp W/zygote: | stack=0x969f0000-0x969f2000 stackSize=1006KB 
08-29 01:05:23.536 11369-11376/com.example.alexlevine.oceanapp W/zygote: | held mutexes= "mutator lock"(shared held) 
08-29 01:05:23.536 11369-11376/com.example.alexlevine.oceanapp W/zygote:  at java.lang.Throwable.toString(Throwable.java:474) 
08-29 01:05:23.536 11369-11376/com.example.alexlevine.oceanapp W/zygote:  at java.lang.String.valueOf(String.java:2827) 
08-29 01:05:23.536 11369-11376/com.example.alexlevine.oceanapp W/zygote:  at java.lang.StringBuilder.append(StringBuilder.java:132) 
08-29 01:05:23.536 11369-11376/com.example.alexlevine.oceanapp W/zygote:  at com.android.internal.os.LoggingPrintStream.println(LoggingPrintStream.java:290) 
08-29 01:05:23.536 11369-11376/com.example.alexlevine.oceanapp W/zygote:  at java.lang.Throwable$WrappedPrintStream.println(Throwable.java:740) 
08-29 01:05:23.536 11369-11376/com.example.alexlevine.oceanapp W/zygote:  at java.lang.Throwable.printStackTrace(Throwable.java:648) 
08-29 01:05:23.536 11369-11376/com.example.alexlevine.oceanapp W/zygote:  at java.lang.Throwable.printStackTrace(Throwable.java:636) 
08-29 01:05:23.536 11369-11376/com.example.alexlevine.oceanapp W/zygote:  at java.lang.Throwable.printStackTrace(Throwable.java:627) 
08-29 01:05:23.536 11369-11379/com.example.alexlevine.oceanapp I/zygote: Waiting for a blocking GC ObjectsAllocated 
08-29 01:05:23.536 11369-11369/com.example.alexlevine.oceanapp I/zygote: Waiting for a blocking GC Alloc 
08-29 01:05:23.536 11369-11376/com.example.alexlevine.oceanapp W/zygote: JNI WARNING: java.lang.OutOfMemoryError thrown while calling printStackTrace 
08-29 01:05:23.537 11369-11376/com.example.alexlevine.oceanapp I/zygote: Waiting for a blocking GC Alloc 
08-29 01:05:23.538 11369-11856/com.example.alexlevine.oceanapp I/zygote: Waiting for a blocking GC ObjectsAllocated 
08-29 01:05:25.781 11369-11378/com.example.alexlevine.oceanapp I/zygote: Clamp target GC heap from 389MB to 384MB 
08-29 01:05:25.781 11369-11378/com.example.alexlevine.oceanapp I/zygote: Alloc concurrent copying GC freed 10(728B) AllocSpace objects, 0(0B) LOS objects, 0% free, 383MB/384MB, paused 1.299ms total 2.245s 
08-29 01:05:25.781 11369-11369/com.example.alexlevine.oceanapp I/zygote: Waiting for a blocking GC Alloc 
08-29 01:05:25.781 11369-11379/com.example.alexlevine.oceanapp I/zygote: Waiting for a blocking GC ObjectsAllocated 
08-29 01:05:25.781 11369-11856/com.example.alexlevine.oceanapp I/zygote: Waiting for a blocking GC ObjectsAllocated 
08-29 01:05:25.782 11369-11376/com.example.alexlevine.oceanapp I/zygote: Waiting for a blocking GC Alloc 
08-29 01:05:25.782 11369-11369/com.example.alexlevine.oceanapp I/zygote: WaitForGcToComplete blocked for 3.469s for cause Alloc 
08-29 01:05:25.782 11369-11369/com.example.alexlevine.oceanapp I/zygote: Starting a blocking GC Alloc 
08-29 01:05:25.782 11369-11379/com.example.alexlevine.oceanapp I/zygote: WaitForGcToComplete blocked for 3.469s for cause ObjectsAllocated 
08-29 01:05:25.782 11369-11369/com.example.alexlevine.oceanapp I/zygote: Waiting for a blocking GC Alloc 
08-29 01:05:25.783 11369-11376/com.example.alexlevine.oceanapp I/zygote: Waiting for a blocking GC Alloc 
08-29 01:05:25.783 11369-11379/com.example.alexlevine.oceanapp I/zygote: Starting a blocking GC Alloc 
08-29 01:05:25.783 11369-11378/com.example.alexlevine.oceanapp W/zygote: Throwing OutOfMemoryError "Failed to allocate a 32 byte allocation with 0 free bytes and 0B until OOM, max allowed footprint 402653184, growth limit 402653184" (recursive case) 
08-29 01:05:25.783 11369-11379/com.example.alexlevine.oceanapp I/zygote: Starting a blocking GC Alloc 
08-29 01:05:25.783 11369-11376/com.example.alexlevine.oceanapp I/zygote: Waiting for a blocking GC Alloc 
08-29 01:05:25.783 11369-11369/com.example.alexlevine.oceanapp I/zygote: Waiting for a blocking GC Alloc 
08-29 01:05:25.784 11369-11856/com.example.alexlevine.oceanapp I/zygote: Waiting for a blocking GC ObjectsAllocated 
08-29 01:05:25.784 11369-11378/com.example.alexlevine.oceanapp W/zygote: "FinalizerDaemon" daemon prio=5 tid=9 Runnable 
08-29 01:05:25.784 11369-11378/com.example.alexlevine.oceanapp W/zygote: | group="system" sCount=0 dsCount=0 flags=0 obj=0x12c863f0 self=0xa5263a00 
08-29 01:05:25.784 11369-11378/com.example.alexlevine.oceanapp W/zygote: | sysTid=11378 nice=4 cgrp=default sched=0/0 handle=0x968e8970 
08-29 01:05:25.784 11369-11378/com.example.alexlevine.oceanapp W/zygote: | state=R schedstat=(16464684522 913376415 1721) utm=1514 stm=132 core=0 HZ=100 
08-29 01:05:25.784 11369-11378/com.example.alexlevine.oceanapp W/zygote: | stack=0x967e6000-0x967e8000 stackSize=1038KB 
08-29 01:05:25.784 11369-11378/com.example.alexlevine.oceanapp W/zygote: | held mutexes= "mutator lock"(shared held) 
08-29 01:05:25.784 11369-11378/com.example.alexlevine.oceanapp W/zygote:  at com.android.internal.os.BinderInternal$GcWatcher.finalize(BinderInternal.java:53) 
08-29 01:05:25.784 11369-11378/com.example.alexlevine.oceanapp W/zygote:  at java.lang.Daemons$FinalizerDaemon.doFinalize(Daemons.java:250) 
08-29 01:05:25.784 11369-11378/com.example.alexlevine.oceanapp W/zygote:  at java.lang.Daemons$FinalizerDaemon.runInternal(Daemons.java:237) 
08-29 01:05:25.784 11369-11378/com.example.alexlevine.oceanapp W/zygote:  at java.lang.Daemons$Daemon.run(Daemons.java:103) 
08-29 01:05:25.784 11369-11378/com.example.alexlevine.oceanapp W/zygote:  at java.lang.Thread.run(Thread.java:764) 
08-29 01:05:25.786 11369-11378/com.example.alexlevine.oceanapp E/System: Uncaught exception thrown by finalizer 
08-29 01:05:25.786 11369-11378/com.example.alexlevine.oceanapp I/zygote: Waiting for a blocking GC Alloc 

Answer 1

代わりに手動で非同期タスクを使用しようとしている場合は、http://square.github.io/okhttp/

のようなあなたのネットワーク呼び出しを処理するためのライブラリを使用することができ非同期タスクを使用して非同期のオブジェクトから静的な配列にアクセスするとき、それは間違ってやっています仕事。代わりに

を実行して、あなたの活動にデータを設定

public class fetchFFDASData extends AsyncTask<URL, Void, ArrayList<WeightedLatLng>> { 
    public static ArrayList<WeightedLatLng> ffdasArray; 

    protected List<String[]> doInBackground(URL... urls) { 

     String typekey; 

     ffdasArray = new ArrayList<WeightedLatLng>(); 
     Object[] ffdasObjects = null; 
     URL mUrl = null; 
     List<String[]> csvLine = new ArrayList<>(); 
     String[] content = null; 
     try { 
      //mUrl = new URL("http://hpcg.purdue.edu/FFDAS/Download/"+MainActivity.typeKey+"_yearly_date="+MainActivity.displayyear+"s-01-01-00_res=0.1_origin=-180,90_size=360,-180.csv"); 
      mUrl = new URL ("http://hpcg.purdue.edu/FFDAS/Download/" + MainActivity.typeKey + "_yearly_date=" + MainActivity.displayyear + "-01-01-00_res=0.1_origin=-180,90_size=360,-180.csv"); 
     } catch (MalformedURLException e) { 
      e.printStackTrace(); 
     } 
     try { 
      //assert mUrl != null; 
      URLConnection connection = mUrl.openConnection(); 
      BufferedReader br = new BufferedReader(new 
        InputStreamReader(connection.getInputStream())); 
      String line = ""; 
      while((line = br.readLine()) != null){ 
       content = line.split(","); 
       csvLine.add(content); 
      } 
      br.close(); 
     } catch (IOException e) { 
      e.printStackTrace(); 
     } 

     for(int i = 3; i < /*csvLine.size()*/7; i++) { 
      double lt = Double.parseDouble(csvLine.get(i)[0]); 
      double ln = Double.parseDouble(csvLine.get(i)[2]); 
      double w = Double.parseDouble(csvLine.get(i)[2]); 
      LatLng ltln = new LatLng(lt, ln); 
      WeightedLatLng wll = new WeightedLatLng(ltln, w); 
      ffdasArray.add(wll); 
     } 
     return ffdasArray; 
    } 

    protected void onPostExecute(ArrayList<WeightedLatLng> result) { 
     super.onPostExecute(result); 
     // 
     } 
    } 

ポストを上書き今活動における非同期タスクへの通話は

else 
    { 
    displayyear = progress + 1997; 
    new fetchFFDASData(){ 
@ovveride 
protected void onPostExecute(ArrayList<WeightedLatLng> result) { 
     super.onPostExecute(result); 
// minyear.setText(); 
     // do the processing here. 
     } 
    } 
}.execute(); 


}