I have an AlertDialog including an .setMultiChoiceItems. I set the size of the dialog box to fill 90% of the screen, but when the dialog is displayed, the buttons are still near the top of the dialog and cut of the options in the Content Area. I can scroll to see all the options, but it would obviously be better if the content area was expanded to show more of them initially.

This is the code I used, as for as I can tell, it's the pretty standard way to display an alert dialog? multiFileNames is an array containing the texts to display, noOfOptions is the number of items in that array.

            AlertDialog.Builder alt_bld = new AlertDialog.Builder(this);
            alt_bld.setTitle("Select Items to Share");
            boolean[] checkedItems = new boolean[noOfOptions];
            alt_bld.setMultiChoiceItems(multiFileNames, checkedItems, (dialog, which, isChecked) -> checkedItems[which] = isChecked);
            alt_bld.setPositiveButton("Select", (dialog, which) -> {
                //process selected, missed this out as it's quite long.
                dialog.dismiss();// dismiss the alertbox after chose option
            });
            alt_bld.setNegativeButton("Cancel", (dialog, which) -> {
                dialog.dismiss();
                finish();
            });
            AlertDialog alert = alt_bld.create();
            alert.show();
            DisplayMetrics displayMetrics = new DisplayMetrics();
            getWindowManager().getDefaultDisplay().getMetrics(displayMetrics);
            WindowManager.LayoutParams layoutParams = new WindowManager.LayoutParams();
            layoutParams.copyFrom(alert.getWindow().getAttributes());
            // setting width to 90% of display
            layoutParams.width = (int) (displayMetrics.widthPixels * 0.9f);
            // setting height to 90% of display
            layoutParams.height = (int) (displayMetrics.heightPixels * 0.9f);
            alert.getWindow().setAttributes(layoutParams);