我正在尝试从在线获取一些数据，这是CSV格式，但是，我在日志cat监视器中收到了很长的错误，现在我甚至无法再显示它们了。尝试在地图上绘制数据时，它不会返回数据并崩溃。
这是执行获取的线程的代码：
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);
//
}
}
这是我的主要活动：
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;
}
}
请注意，MainActivity中有其他方法的调用我已在此帖中排除，因为它们不相关，所以这不是错误。但是，有人可以看看我的代码并帮我调试吗？谢谢！
编辑：这是我的错误开始日志：
我看到了一些关于内存分配的信息，但我非常怀疑它们是一个巨大的溢出，因为我只是调用4行数据来测试它。此外，以前，有一些类型的错误显示一些丢失的标题，但我不能再重新创建它。
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
答案 0 :(得分：0)
您可以使用库来处理网络调用，例如http://square.github.io/okhttp/
，而不是手动使用异步任务如果您要使用异步任务，则在从异步任务对象访问静态数组时会出错。而是覆盖后执行，然后在您的活动中设置数据
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);
//
}
}
现在，您在Activity中对异步任务的调用将是
else
{
displayyear = progress + 1997;
new fetchFFDASData(){
@ovveride
protected void onPostExecute(ArrayList<WeightedLatLng> result) {
super.onPostExecute(result);
// minyear.setText();
// do the processing here.
}
}
}.execute();
}