android - DialogFragment crash on second rotation (IllegalStateException) -

i creating dialogfragment within fragment hosted activity. here's how create dialog:

newdialogedittext agedialog = new newdialogedittext.builder()             .setcharlimit(2)             .setinputtype(type_class_number)             .settitle(r.string.dialog_title_age)             .createdialog();     agedialog.settargetfragment(weightplanfragment.this, request_age);     agedialog.show(getfragmentmanager(), dialog_age); 

upon device reconfig (rotate in case) dialog maintained along input (inflating layout edittext within dialogfragment class. however, upon reconfig, receive crash:

failure saving state: newdialogedittext{5c12148 #0 dialog_age} has target not in fragment manager 

try this

<activity             android:name=".mainactivity"             android:configchanges="orientation|keyboardhidden|screensize"             android:label="@string/app_name"             android:theme="@style/apptheme.noactionbar" />