AlertDialog does not show dividers on a list

Question

I have this class:

public class PageDetailInfoView extends FrameLayout {

//few constructors and methods

//method to show an AlertDialog with a list
private voi         


        

Answer 1

It is probably because you are running your app on Android 5.0+ which has Material design.

To get the "old" look, just construct your dialog with the Holo style:

ContextThemeWrapper themedContext = new ContextThemeWrapper(getContext(), android.R.style.Theme_Holo_Light_Dialog_NoActionBar);
AlertDialog.Builder builder = new AlertDialog.Builder(themedContext);
// ... then create your dialog

Although this might seem weird for some users (especially on Lollipop and Marshmallow, so I recommend looking into using custom views for your dialog.

Answer 2

Change AlertDialog List items divider color as:

AlertDialog alertDialogObject = dialogBuilder.create();
ListView listView=alertDialogObject.getListView();  
listView.setDivider(new ColorDrawable(Color.BLUE)); // set color
listView.setDividerHeight(2); // set height 
alertDialogObject.show();