How to raise a Toast on top of a AlertDialog?

Question

I am validating an AlertDialog, and I would like to raise a Toast on top of the AlertDialog display.

I have this code, but the Toast is displayed on the activity

new AlertDialog.Builder(this).setTitle(R.string.contact_groups_add)
                .setView(addView).setPositiveButton(R.string.ok,
                        new DialogInterface.OnClickListener() {
                            public void onClick(DialogInterface dialog,
                                    int whichButton) {

                                if (wrapper.getTitle().length()>0)
                                {
                                    processAdd(wrapper);
                                } else {
                                    Toast.makeText(getApplicationContext(), "Name is required", Toast.LENGTH_SHORT).show();
                                }
                            }
                        }).setNegativeButton(R.string.cancel,
                        new DialogInterface.OnClickListener() {
                            public void onClick(DialogInterface dialog,
                                    int whichButton) {
                                // ignore, just dismiss
                            }
                        }).show();

Answer 1

Instead of using AdvertDialog.Builder, you can create a custom dialog which will behave like a dialog, but is in fact a normal activity. Your toasts should be drawn normally on top of this.

Answer 2

Had this problem myself as well, when I wanted to show a validation message within a dialog. The answer that seanhodges gave is probably the cleaner and better way. But a seperate activity wasnt practical for me, so i came up with this solution.

Anyway, you can use the AlerDialog.Builder, and show a toast. If you override the OnClickListener of the button the you want to trigger the toast, you can show a toast on top of a dialog.

An example;

public void showToastOnDialog(final Context context) {
    AlertDialog.Builder builder = new AlertDialog.Builder(context);
    builder.setTitle("Dialog title");
    builder.setMessage("Dialog message");
    builder.setPositiveButton(android.R.string.ok, new OnClickListener() {
        @Override
        public void onClick(DialogInterface dialog, int which) {
            // Do nothing, you will be overriding this anyway
        }
    });
    builder.setNegativeButton(android.R.string.cancel,
            new OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    // You can implement code here, because you wont be
                    // overriding this
                }
            });
    final AlertDialog dialog = builder.create();
    // Make sure you show the dialog first before overriding the
    // OnClickListener
    dialog.show();
    // Notice that I`m not using DialogInterface.OnClicklistener but the
    // View.OnClickListener
    dialog.getButton(Dialog.BUTTON_POSITIVE).setOnClickListener(
            new View.OnClickListener() {

                @Override
                public void onClick(View v) {

                    Toast toast = Toast.makeText(context,
                            "I`m a toast on top of a dialog.",
                            Toast.LENGTH_LONG);
                    toast.show();
                    // Because you are overriding the OnClicklistener, the
                    // dialog will not auto dismiss
                    // after clicking
                    dialog.dismiss();
                }
            });
}