java - My url temperature widget not working -


i'm new javascript , android. pls me (i removed actual user , password) , ip work , code on bluej works no study on android.unable make widget work.

error log: 

 09-22 17:39:53.947 31620-31620/pi.blackoutwidget e/androidruntime: fatal exception: main     process: pi.blackoutwidget, pid: 31620     java.lang.runtimeexception: unable start receiver pi.blackoutwidget.temperature: android.os.networkonmainthreadexception        @ android.app.activitythread.handlereceiver(activitythread.java:2661)        @ android.app.activitythread.access$1800(activitythread.java:154)        @ android.app.activitythread$h.handlemessage(activitythread.java:1398)        @ android.os.handler.dispatchmessage(handler.java:102)        @ android.os.looper.loop(looper.java:135)        @ android.app.activitythread.main(activitythread.java:5310)        @ java.lang.reflect.method.invoke(native method)        @ java.lang.reflect.method.invoke(method.java:372)        @ com.android.internal.os.zygoteinit$methodandargscaller.run(zygoteinit.java:904)        @ com.android.internal.os.zygoteinit.main(zygoteinit.java:699)        @ de.robv.android.xposed.xposedbridge.main(xposedbridge.java:102)     caused by: android.os.networkonmainthreadexception        @ android.os.strictmode$androidblockguardpolicy.onnetwork(strictmode.java:1147)        @ libcore.io.blockguardos.connect(blockguardos.java:110)        @ libcore.io.iobridge.connecterrno(iobridge.java:137)        @ libcore.io.iobridge.connect(iobridge.java:122)        @ java.net.plainsocketimpl.connect(plainsocketimpl.java:183)        @ java.net.plainsocketimpl.connect(plainsocketimpl.java:456)        @ java.net.socket.connect(socket.java:882)        @ com.android.okhttp.internal.platform.connectsocket(platform.java:174)        @ com.android.okhttp.connection.connect(connection.java:152)        @ com.android.okhttp.internal.http.httpengine.connect(httpengine.java:276)        @ com.android.okhttp.internal.http.httpengine.sendrequest(httpengine.java:211)        @ com.android.okhttp.internal.http.httpurlconnectionimpl.execute(httpurlconnectionimpl.java:382)        @ com.android.okhttp.internal.http.httpurlconnectionimpl.getresponse(httpurlconnectionimpl.java:332)        @ com.android.okhttp.internal.http.httpurlconnectionimpl.getinputstream(httpurlconnectionimpl.java:199)        @ java.net.url.openstream(url.java:470)        @ pi.blackoutwidget.temperature.updateappwidget(temperature.java:28)        @ pi.blackoutwidget.temperature.onupdate(temperature.java:48)        @ android.appwidget.appwidgetprovider.onreceive(appwidgetprovider.java:66)        @ android.app.activitythread.handlereceiver(activitythread.java:2654)        @ android.app.activitythread.access$1800(activitythread.java:154)         @ android.app.activitythread$h.handlemessage(activitythread.java:1398)         @ android.os.handler.dispatchmessage(handler.java:102)         @ android.os.looper.loop(looper.java:135)         @ android.app.activitythread.main(activitythread.java:5310)         @ java.lang.reflect.method.invoke(native method)         @ java.lang.reflect.method.invoke(method.java:372)         @      com.android.internal.os.zygoteinit$methodandargscaller.run(zygoteinit.java:904)         @ com.android.internal.os.zygoteinit.main(zygoteinit.java:699)         @ de.robv.android.xposed.xposedbridge.main(xposedbridge.java:102)  
 static void updateappwidget(context context, appwidgetmanager appwidgetmanager,                                 int appwidgetid) {         string temp = null, temps;         try {             url url = new url("http://192.168.0.50:8001/tmp/temperature.dat");             authenticator.setdefault(new authenticator() {                 protected passwordauthentication getpasswordauthentication() {                     return new passwordauthentication("user", "password".tochararray());                 }             });             bufferedreader btemp = new bufferedreader(new inputstreamreader(url.openstream()));             temp = btemp.readline();             system.out.println(temp+"ciao");         } catch (malformedurlexception e) {         } catch (ioexception e) {         }         temps = "temp: "+temp;         string widgettext = temps;          remoteviews views = new remoteviews(context.getpackagename(), r.layout.temperature);         views.settextviewtext(r.id.tempview, widgettext);          // instruct widget manager update widget         appwidgetmanager.updateappwidget(appwidgetid, views);     }      @override     public void onupdate(context context, appwidgetmanager appwidgetmanager, int[] appwidgetids) {         // there may multiple widgets active, update of them         (int appwidgetid : appwidgetids) {             updateappwidget(context, appwidgetmanager, appwidgetid);         }     } 
  <?xml version="1.0" encoding="utf-8"?>     <manifest xmlns:android="http://schemas.android.com/apk/res/android"         package="pi.blackoutwidget">         <uses-permission android:name="android.permission.internet" />         <uses-permission android:name="android.permission.access_network_state" />         <uses-permission android:name="android.permission.read_external_storage" />         <application             android:allowbackup="true"             android:icon="@mipmap/ic_launcher"             android:label="@string/app_name"             android:supportsrtl="true"             android:theme="@style/apptheme">             <receiver android:name=".temperature">                 <intent-filter>                     <action android:name="android.appwidget.action.appwidget_update" />                 </intent-filter>                  <meta-data                     android:name="android.appwidget.provider"                     android:resource="@xml/temperature_info" />             </receiver>             <receiver android:name=".garage">                 <intent-filter>                     <action android:name="android.appwidget.action.appwidget_update" />                 </intent-filter>                  <meta-data                     android:name="android.appwidget.provider"                     android:resource="@xml/garage_info" />             </receiver>         </application>      </manifest>


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