align AlertDialog buttons to center

Question

I use this codes for Android (Java) programming:

public static MessageBoxResult showOk(
        Context context, String title, String message, String okMessa         


        

Answer 1

This worked for me :

    final AlertDialog.Builder builder = new AlertDialog.Builder(getActivity(), R.style.AppCompatAlertDialogStyle);
    builder.setCancelable(true);
    builder.setTitle(title);
    builder.setMessage(message);

    builder.setPositiveButton("OK", new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialog, int which) {

        }
    });


    final AlertDialog dialog = builder.create();
    dialog.show(); //show() should be called before dialog.getButton().


    final Button positiveButton = dialog.getButton(AlertDialog.BUTTON_POSITIVE);
    LinearLayout.LayoutParams positiveButtonLL = (LinearLayout.LayoutParams) positiveButton.getLayoutParams();
    positiveButtonLL.gravity = Gravity.CENTER;
    positiveButton.setLayoutParams(positiveButtonLL);

Answer 2

Use crtn's method, but instead of changing the LayoutParam's gravity, change its width to ViewGroup.LayoutParams.MATCH_PARENT;

Answer 3

You can set the positive, negative and neutral buttons, hide both the positive and neutral buttons, and put the negative button where the neutral button is supposed to be(center) by using LayoutParams.

in onCreateView:

dialog = builder.setNegativeButton(R.string.cancel, new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {

            }
        })
                 .setPositiveButton(R.string.go_on, new DialogInterface.OnClickListener() {
                     @Override
                     public void onClick(DialogInterface dialog, int which) {

                     }
                 })
                 .setNeutralButton(R.string.do_nothing, new DialogInterface.OnClickListener() {
                     @Override
                     public void onClick(DialogInterface dialog, int which) {

                     }
                 })
                 .create();

in onStart():

 super.onStart();

    final Button positiveButton = dialog.getButton(AlertDialog.BUTTON_POSITIVE);
   positiveButton.setVisibility(View.INVISIBLE);
   final Button neutralButton = dialog.getButton(AlertDialog.BUTTON_NEUTRAL);
   neutralButton.setVisibility(View.INVISIBLE);
   final Button negativeButton = dialog.getButton(AlertDialog.BUTTON_NEGATIVE);
   negativeButton.setLayoutParams(neutralButton.getLayoutParams());