Question

I created a single choice AlertDialog with “Apply” and “Cancel” buttons. When the user presses “Cancel”, I would like to set the selected item back to what it was when the dialog was first shown (I have the value stored already).

I know how to set the selected item when the dialog is first created in setSingleChoiceItems() but is there a way to set it again later?

I would like to be compatible with API level 7, so I’d rather not use onPrepareDialog().

Answer 1

You can create your dialog on the spot rather than going through showDialog and onCreateDialog. This way its always using the current selection we give to setSingleChoiceItems.

//where we display the dialog
showDialog(MYDIALOG);
AlertDialog.Builder builder = new Builder(this);
String[] choices = {"A","B","C"};
builder.setSingleChoiceItems(choices,current_choice,null);
builder.setPositiveButton("Select",null);
builder.setNegativeButton("Cancel",null);
builder.show();
...
protected Dialog onCreatDialog(int id) {
    if (id==MYDIALOG) {
        AlertDialog.Builder builder = new Builder(this);
        String[] choices = {"A","B","C"};
        builder.setSingleChoiceItems(choices,current_choice,null);
        builder.setPositiveButton("Select",null);
        builder.setNegativeButton("Cancel",null);
        return builder.show();
    }
    return null;
}