android错误“无法在未调用looper.prepare的线程内创建处理程序” [重复]
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【中文标题】android错误“无法在未调用looper.prepare的线程内创建处理程序” [重复]【英文标题】：android error "cant create handler inside thread that has not called looper.prepare" [duplicate] 【发布时间】：2014-03-03 01:05:25 【问题描述】：我有一个名为 ShareId 的对话框片段和一个名为 SendMapDataService。当我从 ShareId 调用 SendMapDataService 出现错误无法在尚未调用的线程内创建处理程序 looper.prepare....
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package dialog;
import com.rosaloves.bitlyj.Url;
import static com.rosaloves.bitlyj.Bitly.*;
import java.util.Calendar;
import updatedata.GPSTracker;
import updatedata.SendMapDataService;
import com.example.map.LocationSendActivity;
import com.example.map.R;
import android.app.ProgressDialog;
import android.content.Intent;
import android.net.Uri;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v4.app.DialogFragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
public class ShareId extends DialogFragment
Button ok,cancel;
public static EditText et;
private double latt,lngt;
public static String sid,lat,lng,time;
ProgressDialog pDialog;
GPSTracker gps;
public void onCreate(Bundle savedInstanceState)
super.onCreate(savedInstanceState);
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState)
View V = inflater.inflate(R.layout.shareid, container, false);
ok=(Button)V.findViewById(R.id.button1);
cancel=(Button)V.findViewById(R.id.button2);
et=(EditText)V.findViewById(R.id.editText1);
getDialog().setTitle("Enter Share_id");
ok.setOnClickListener(new View.OnClickListener()
@Override
public void onClick(View v)
// TODO Auto-generated method stub
sid=et.getText().toString();
if(sid.length() == 0 )
Toast.makeText(getActivity(),"Please enter share_id",Toast.LENGTH_SHORT).show();
else
new ShareTask().execute();
);
cancel.setOnClickListener(new View.OnClickListener()
@Override
public void onClick(View v)
// TODO Auto-generated method stub
getDialog().dismiss();
);
return V;
class ShareTask extends AsyncTask<String, String, String>
StringBuffer sbf2=new StringBuffer();
boolean b=false;
int ch;
protected void onPreExecute()
super.onPreExecute();
pDialog = new ProgressDialog(getActivity());
pDialog.setMessage("Loading Application. Please wait...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(false);
pDialog.show();
@Override
protected String doInBackground(String... params)
// TODO Auto-generated method stub
// Create download Url
Url url = as("adeveloper962", "R_38e071119c3048db892f3aca82b03392")
.call(shorten("http://map.rhaasoft.net//locationfile/download.php"));
String ul = url.getShortUrl();
sbf2.append("Click for download LocationMapping file"+" "+ul+"\n");
//Create location Url
gps = new GPSTracker(getActivity());
if(gps.canGetLocation())
Log.e("Shareid", "hello");
b=true;
//get Time
time= java.text.DateFormat.getDateTimeInstance().format(Calendar.getInstance().getTime());
//get latitude longitude
latt = gps.getLatitude();
lat=String.valueOf(latt);
lngt= gps.getLongitude();
lng=String.valueOf(lngt);
//add link
Uri.Builder ur=Uri.parse("http://myapp.com/?").buildUpon();
ur.appendQueryParameter("la", lat);
ur.appendQueryParameter("ln", lng);
ur.appendQueryParameter("ti", time);
ur.appendQueryParameter("id", sid);
ur.build();
//shorting url
Url url1 = as("adeveloper962", "R_38e071119c3048db892f3aca82b03392")
.call(shorten(ur.toString()));
String ul1 = url1.getShortUrl();
//append
sbf2.append("Click for show location"+" "+ul1);
else
b=false;
return null;
protected void onPostExecute(String file_url)
pDialog.dismiss();
getActivity().runOnUiThread(new Runnable()
public void run()
if(b == true)
getDialog().dismiss();
Intent intent = new Intent(Intent.ACTION_SEND);
intent.setType("text/plain");
intent.putExtra(Intent.EXTRA_SUBJECT, "Location Shareing");
intent.putExtra(Intent.EXTRA_TEXT, sbf2.toString());
startActivity(Intent.createChooser(intent, "Select Application for share"));
//Send continue data
ch=LocationSendActivity.state;
if(ch == 0 || ch ==1)
LocationSendActivity.i=1;
LocationSendActivity.u_id=sid;
getActivity().startService(new Intent(getActivity(),SendMapDataService.class));
else
LocationSendActivity.i=0;
getActivity().stopService(new Intent(getActivity(),SendMapDataService.class));
else
getDialog().dismiss();
gps.showSettingsAlert();
);
发送地图数据服务..
package updatedata;
import java.util.Calendar;
import org.json.JSONException;
import org.json.JSONObject;
import com.example.map.FunctionCall;
import com.example.map.LocationSendActivity;
import android.app.Service;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Handler;
import android.os.IBinder;
import android.os.Looper;
import android.util.Log;
import android.widget.Toast;
public class SendMapDataService extends Service
private Handler handler;
private String id1,lat1,lng1,time1;
private double lat,lng;
GPSTracker gps;
private long total,val,min;
@Override
public IBinder onBind(Intent intent)
// TODO Auto-generated method stub
gps=new GPSTracker(getApplicationContext());
return null;
public int onStartCommand(Intent intent, int flags, int startId)
id1=LocationSendActivity.u_id;
// Log.e("Myid", String.valueOf(LocationSendActivity.u_id));
// get time from time interval
if(min == 1)
val=15;
else if(min == 2)
val=30;
else if(min == 3)
val=60;
else if(min == 4)
val=5*60;
else if(min == 5)
val=10*60;
else
val=15;
total=(long) (val*1000);
// Log.e("Seconds", String.valueOf(total));
// Start handler
handler=new Handler();
handler.postDelayed(runn, 1000);
// Looper.loop();
return START_STICKY;
Runnable runn = new Runnable()
@Override
public void run()
gps=new GPSTracker(getApplicationContext());
if(gps.canGetLocation())
lat = gps.getLatitude();
lng = gps.getLongitude();
time1=java.text.DateFormat.getDateTimeInstance().format(Calendar.getInstance().getTime());
lat1=String.valueOf(lat);
lng1=String.valueOf(lng);
new SendUpdatedData(id1,lat1,lng1,time1).execute();
handler.postDelayed(this, total);
else
gps.showSettingsAlert();
;
public void onDestroy()
super.onDestroy();
handler.removeCallbacks(runn,null);
Toast.makeText(this, "Data Send Service Destroyed", Toast.LENGTH_LONG).show();
class SendUpdatedData extends AsyncTask<String, String, String>
String id2,lat2,lng2,time2;
int success,val,update;
public SendUpdatedData(String id, String lat,String lng,String time)
// TODO Auto-generated constructor stub
this.id2=id;
this.lat2=lat;
this.lng2=lng;
this.time2=time;
protected void onPreExecute()
super.onPreExecute();
@Override
protected String doInBackground(String... params)
// TODO Auto-generated method stub
FunctionCall fc=new FunctionCall();
JSONObject jo=fc.sendUpdateData(id2,lat2,lng2,time2);
try
success=jo.getInt("success");
update=jo.getInt("update");
catch(JSONException e)
e.printStackTrace();
return null;
protected void onPostExecute(String file_url)
if (success==1)
if(update == 1)
Toast.makeText(getApplication(),"Data Updated", Toast.LENGTH_SHORT).show();
else
Toast.makeText(getApplication(),"New Data Inserted", Toast.LENGTH_SHORT).show();
else
Toast.makeText(getApplication(),"Data Not Send", Toast.LENGTH_SHORT).show();
LogCat....
02-06 12:16:43.740: W/System.err(15622): java.lang.RuntimeException: Can't create handler inside thread that has not called Looper.prepare()
02-06 12:16:43.740: W/System.err(15622): at android.os.Handler.<init>(Handler.java:121)
02-06 12:16:43.740: W/System.err(15622): at android.location.LocationManager$ListenerTransport$1.<init>(LocationManager.java:137)
02-06 12:16:43.750: W/System.err(15622): at android.location.LocationManager$ListenerTransport.<init>(LocationManager.java:137)
02-06 12:16:43.750: W/System.err(15622): at android.location.LocationManager._requestLocationUpdates(LocationManager.java:708)
02-06 12:16:43.750: W/System.err(15622): at android.location.LocationManager.requestLocationUpdates(LocationManager.java:630)
02-06 12:16:43.750: W/System.err(15622): at updatedata.GPSTracker.getLocation(GPSTracker.java:65)
02-06 12:16:43.750: W/System.err(15622): at updatedata.GPSTracker.<init>(GPSTracker.java:44)
02-06 12:16:43.750: W/System.err(15622): at dialog.ShareId$ShareTask.doInBackground(ShareId.java:96)
02-06 12:16:43.750: W/System.err(15622): at dialog.ShareId$ShareTask.doInBackground(ShareId.java:1)
02-06 12:16:43.750: W/System.err(15622): at android.os.AsyncTask$2.call(AsyncTask.java:185)
02-06 12:16:43.750: W/System.err(15622): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
02-06 12:16:43.750: W/System.err(15622): at java.util.concurrent.FutureTask.run(FutureTask.java:137)
02-06 12:16:43.750: W/System.err(15622): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1068)
02-06 12:16:43.750: W/System.err(15622): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:561)
02-06 12:16:43.750: W/System.err(15622): at java.lang.Thread.run(Thread.java:1096)
【问题讨论】：
请先搜索再询问。这是 many 答案的常见错误。无需提出新问题。 【参考方案1】：只需在出现异常的行上方调用Looper.prepare();..
【讨论】：
感谢 Ankit，它正在工作........Only one Looper may be created per thread以上是关于android错误“无法在未调用looper.prepare的线程内创建处理程序” [重复]的主要内容，如果未能解决你的问题，请参考以下文章
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