android - Store contacts' name and phones into an ArrayList -

i cannot make solution work... result app crash. made listview, added items , got selected ones, miss making elements of list contacts' names instead of random ones.

once selected, ask number , putextra them in activity.

edit: suggested, here's code i'm trying working:

            cursor phones = getcontentresolver().query(contactscontract.commondatakinds.phone.content_uri, null,null,null, null);         while (phones.movetonext())         {             string name=phones.getstring(phones.getcolumnindex(contactscontract.commondatakinds.phone.display_name));             string phonenumber = phones.getstring(phones.getcolumnindex(contactscontract.commondatakinds.phone.number));          }         phones.close(); 

i'll insert loop every contact, adding every time strings name , phonenumber arraylist. however, when press button should run code (and button working fine), long list of errors android monitor (here's first lines):

e/androidruntime: fatal exception: main java.lang.illegalstateexception: not execute method android:onclick @ android.support.v7.app.appcompatviewinflater$declaredonclicklistener.onclick(appcompatviewinflater.java:293) 

i've added permission manifest:

    <uses-permission android:name="android.permission.read_contacts" /> 

could please me? thanks!

p.s. i've tryed multiple solutions this previus topic, none of them work me...

solved

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it app permission's issue. android 6.0 marshmallow have ask permissions directly in java code (during oncreate method); later i'll post sample code.

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big friend blitzuda helped bug out of problem!