How to fix StrictMode policy violation in android while fetching all mobile number? -


i fetching mobile numbers using cursor query. have enabled strict mode getting exception.

here code fetching mobile number :

public string queryforphonenumber(string contactid) {     final string[] projection = new string[] {             phone.number,             phone.type,     };      final cursor phone = getactivity().getcontentresolver().query(             phone.content_uri,               projection,             data.display_name + "=?",             new string[]{contactid},             null);      if(phone.movetofirst()) {         final int contactnumbercolumnindex = phone.getcolumnindex(phone.number);         //final int contacttypecolumnindex = phone.getcolumnindex(phone.type);          while(!phone.isafterlast()) {             mfmfmusermobile = phone.getstring(contactnumbercolumnindex);             //final int type = phone.getint(contacttypecolumnindex);             phone.movetonext();         }      }     phone.close();      if(mfmfmusermobile.contains(" ")){         mfmfmusermobile.replace(" ", "");     }     //mfmfmusermobile.substring(mfmfmusermobile.length()-10,mfmfmusermobile.length()      return mfmfmusermobile; }

exception :

04-25 09:51:15.035: d/strictmode(27661): strictmode policy violation; ~duration=31 ms: android.os.strictmode$strictmodediskreadviolation: policy=2335 violation=2 04-25 09:51:15.035: d/strictmode(27661):    @ android.os.strictmode$androidblockguardpolicy.onreadfromdisk(strictmode.java:1135) 04-25 09:51:15.035: d/strictmode(27661):    @ android.database.sqlite.sqliteconnection.applyblockguardpolicy(sqliteconnection.java:1041) 04-25 09:51:15.035: d/strictmode(27661):    @ android.database.sqlite.sqliteconnection.executeforcursorwindow(sqliteconnection.java:842) 04-25 09:51:15.035: d/strictmode(27661):    @ android.database.sqlite.sqlitesession.executeforcursorwindow(sqlitesession.java:836) 04-25 09:51:15.035: d/strictmode(27661):    @ android.database.sqlite.sqlitequery.fillwindow(sqlitequery.java:62) 04-25 09:51:15.035: d/strictmode(27661):    @ android.database.sqlite.sqlitecursor.fillwindow(sqlitecursor.java:144) 04-25 09:51:15.035: d/strictmode(27661):    @ android.database.sqlite.sqlitecursor.getcount(sqlitecursor.java:133) 04-25 09:51:15.035: d/strictmode(27661):    @ android.database.cursortobulkcursoradaptor.getbulkcursordescriptor(cursortobulkcursoradaptor.java:148) 04-25 09:51:15.035: d/strictmode(27661):    @ android.content.contentprovidernative.ontransact(contentprovidernative.java:118) 04-25 09:51:15.035: d/strictmode(27661):    @ android.os.binder.exectransact(binder.java:404) 04-25 09:51:15.035: d/strictmode(27661):    @ dalvik.system.nativestart.run(native method) 04-25 09:51:15.035: d/strictmode(27661): # via binder call stack: 04-25 09:51:15.035: d/strictmode(27661): android.os.strictmode$logstacktrace 04-25 09:51:15.035: d/strictmode(27661):    @ android.os.strictmode.readandhandlebindercallviolations(strictmode.java:1705) 04-25 09:51:15.035: d/strictmode(27661):    @ android.os.parcel.readexceptioncode(parcel.java:1447) 04-25 09:51:15.035: d/strictmode(27661):    @ android.database.databaseutils.readexceptionfromparcel(databaseutils.java:134) 04-25 09:51:15.035: d/strictmode(27661):    @ android.content.contentproviderproxy.query(contentprovidernative.java:413) 04-25 09:51:15.035: d/strictmode(27661):    @ android.content.contentresolver.query(contentresolver.java:461) 04-25 09:51:15.035: d/strictmode(27661):    @ android.content.contentresolver.query(contentresolver.java:404) 04-25 09:51:15.035: d/strictmode(27661):    @ com.newtglobal.fmfm.invitefriendfragement.queryforphonenumber(invitefriendfragement.java:954) 04-25 09:51:15.035: d/strictmode(27661):    @ com.newtglobal.fmfm.invitefriendfragement$contactsadapter.bindview(invitefriendfragement.java:747) 04-25 09:51:15.035: d/strictmode(27661):    @ android.support.v4.widget.cursoradapter.getview(cursoradapter.java:256) 04-25 09:51:15.035: d/strictmode(27661):    @ android.widget.abslistview.obtainview(abslistview.java:2255) 04-25 09:51:15.035: d/strictmode(27661):    @ android.widget.listview.makeandaddview(listview.java:1790) 04-25 09:51:15.035: d/strictmode(27661):    @ android.widget.listview.filldown(listview.java:691) 04-25 09:51:15.035: d/strictmode(27661):    @ android.widget.listview.fillgap(listview.java:655) 04-25 09:51:15.035: d/strictmode(27661):    @ android.widget.abslistview.trackmotionscroll(abslistview.java:5143) 04-25 09:51:15.035: d/strictmode(27661):    @ android.widget.abslistview.scrollifneeded(abslistview.java:3243) 04-25 09:51:15.035: d/strictmode(27661):    @ android.widget.abslistview.ontouchmove(abslistview.java:3587) 04-25 09:51:15.035: d/strictmode(27661):    @ android.widget.abslistview.ontouchevent(abslistview.java:3431) 04-25 09:51:15.035: d/strictmode(27661):    @ android.view.view.dispatchtouchevent(view.java:7736) 04-25 09:51:15.035: d/strictmode(27661):    @ android.view.viewgroup.dispatchtransformedtouchevent(viewgroup.java:2212) 04-25 09:51:15.035: d/strictmode(27661):    @ android.view.viewgroup.dispatchtouchevent(viewgroup.java:1945) 04-25 09:51:15.035: d/strictmode(27661):    @ android.view.viewgroup.dispatchtransformedtouchevent(viewgroup.java:2218) 04-25 09:51:15.035: d/strictmode(27661):    @ android.view.viewgroup.dispatchtouchevent(viewgroup.java:1959) 04-25 09:51:15.035: d/strictmode(27661):    @ android.view.viewgroup.dispatchtransformedtouchevent(viewgroup.java:2218) 04-25 09:51:15.035: d/strictmode(27661):    @ android.view.viewgroup.dispatchtouchevent(viewgroup.java:1959) 04-25 09:51:15.035: d/strictmode(27661):    @ android.view.viewgroup.dispatchtransformedtouchevent(viewgroup.java:2218) 04-25 09:51:15.035: d/strictmode(27661):    @ android.view.viewgroup.dispatchtouchevent(viewgroup.java:1959) 04-25 09:51:15.035: d/strictmode(27661):    @ android.view.viewgroup.dispatchtransformedtouchevent(viewgroup.java:2218) 04-25 09:51:15.035: d/strictmode(27661):    @ android.view.viewgroup.dispatchtouchevent(viewgroup.java:1959) 04-25 09:51:15.035: d/strictmode(27661):    @ android.view.viewgroup.dispatchtransformedtouchevent(viewgroup.java:2218) 04-25 09:51:15.035: d/strictmode(27661):    @ android.view.viewgroup.dispatchtouchevent(viewgroup.java:1959) 04-25 09:51:15.035: d/strictmode(27661):    @ android.view.viewgroup.dispatchtransformedtouchevent(viewgroup.java:2218) 04-25 09:51:15.035: d/strictmode(27661):    @ android.view.viewgroup.dispatchtouchevent(viewgroup.java:1959) 04-25 09:51:15.035: d/strictmode(27661):    @ android.view.viewgroup.dispatchtransformedtouchevent(viewgroup.java:2218) 04-25 09:51:15.035: d/strictmode(27661):    @ android.view.viewgroup.dispatchtouchevent(viewgroup.java:1959) 04-25 09:51:15.035: d/strictmode(27661):    @ android.view.viewgroup.dispatchtransformedtouchevent(viewgroup.java:2218) 04-25 09:51:15.035: d/strictmode(27661):    @ android.view.viewgroup.dispatchtouchevent(viewgroup.java:1959) 04-25 09:51:15.035: d/strictmode(27661):    @ com.android.internal.policy.impl.phonewindow$decorview.superdispatchtouchevent(phonewindow.java:2068) 04-25 09:51:15.035: d/strictmode(27661):    @ com.android.internal.policy.impl.phonewindow.superdispatchtouchevent(phonewindow.java:1515) 04-25 09:51:15.035: d/strictmode(27661):    @ android.app.activity.dispatchtouchevent(activity.java:2466) 04-25 09:51:15.035: d/strictmode(27661):    @ android.support.v7.app.actionbaractivitydelegateics$windowcallbackwrapper.dispatchtouchevent(actionbaractivitydelegateics.java:268) 04-25 09:51:15.035: d/strictmode(27661):    @ c

any helpful me. in advance.

you should not perform work on ui thread, instead create worker thread , of work there. simplest solution use asynctask:

public class strictmodeactivity extends appcompatactivity {      private static final string tag = strictmodeactivity.class.getsimplename();      @override     protected void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.activity_main);          strictmode.setthreadpolicy(new strictmode.threadpolicy.builder()                 .detectdiskreads()                 .detectdiskwrites()                 .detectnetwork()                 .penaltylog()                 .penaltydeath()                 .build());          new queryforphonenumbertask().execute("your contact display name");     }      private class queryforphonenumbertask extends asynctask<string, void, string> {          @override         protected string doinbackground(string... strings) {             string mfmfmusermobile = null;             string contactid = strings[0];              final string[] projection = new string[]{                     contactscontract.commondatakinds.phone.number,                     contactscontract.commondatakinds.phone.type,             };              final cursor phone = getcontentresolver().query(                     contactscontract.commondatakinds.phone.content_uri,                     projection,                     contactscontract.data.display_name + "=?",                     new string[]{contactid},                     null);              if (phone.movetofirst()) {                 final int contactnumbercolumnindex = phone.getcolumnindex(contactscontract.commondatakinds.phone.number);                 //final int contacttypecolumnindex = phone.getcolumnindex(phone.type);                  while (!phone.isafterlast()) {                     mfmfmusermobile = phone.getstring(contactnumbercolumnindex);                     //final int type = phone.getint(contacttypecolumnindex);                     phone.movetonext();                 }             }             phone.close();              if (mfmfmusermobile != null && mfmfmusermobile.contains(" ")) {                 mfmfmusermobile.replace(" ", "");             }             //mfmfmusermobile.substring(mfmfmusermobile.length()-10,mfmfmusermobile.length()              return mfmfmusermobile;         }          @override         protected void onpostexecute(string result) {             log.d(tag, result);         }     } }

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