Android AlertDialog divider not showing everywhere -

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i'm displaying simple dialogfragment alertdialog , simple list.

public dialog oncreatedialog(bundle savedinstancestate) {       alertdialog.builder builder = new alertdialog.builder(getactivity());       builder.setitems(times, new dialoginterface.onclicklistener() {         public void onclick(dialoginterface dialog, int which) {         }       });       builder.settitle("select end date");       alertdialog alertdialog = builder.create();       listview listview = alertdialog.getlistview();       listview.setdivider(new colordrawable(color.black));       listview.setdividerheight(1);       return alertdialog;     }   }

but can see on picture bellow, not diver black ?? me normal divider between items ? enter image description here


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