我有一个名为ShareId的对话框片段和一个名为的服务 SendMapDataService。当我从ShareId调用SendMapDataService时 得到错误无法在未调用的线程内创建处理程序 looper.prepare ....
ShareId
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();
}
}
});
}
}
}
SendMapDataService ..
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中
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)
答案 0 :(得分：3)
只需在您遇到异常的行上方调用Looper.prepare();。