DropDown

The DropDown form element is used for a single choice dialog.

NOTICE

The ListItem, ContactItem, and ContactAutoCompleteAdapter classes are provided in the example app.

Theme

Set this to override the default alert dialog theme.

dropDown<ListItem>(1) {
    theme = R.style.CustomDialogPicker
}

Display Value For

This can be used to set the text that is displayed in the options and field. Your custom class can also just override toString() to display in the dialog.

dropDown<ListItem>(1) {
    displayValueFor = {
        it?.name
    }
}

Array Adapter

Set your custom AutoComplete adapter. It is up to you if you want to retrieve items through an API call.

dropDown<ContactItem>(1) {
    arrayAdapter = ContactAutoCompleteAdapter(this@FormActivity,
                        android.R.layout.simple_list_item_1)
}

Display Radio Buttons

By default this is false. Enable to display the radio buttons

dropDown<ListItem>(1) {
    displayRadioButtons = true
}

Dialog Title

By default this is "Select One". Setting this will override the alert dialog title.

dropDown<ListItem>(1) {
    dialogTitle = "Select One"
}

Dialog Empty Message

By default this is "Empty". Setting this will override the alert dialog message when the options list is empty or null.

dropDown<ListItem>(1) {
    dialogEmptyMessage = "Nothing to see here"
}

Example

Kotlin

dropDown<ListItem>(1) {
    dialogTitle = "Select One"
    options = listOf(ListItem(id = 1, name = "Banana"),
                     ListItem(id = 2, name = "Orange"))
    value = ListItem(id = 1, name = "Banana")
}

Java

FormPickerDropDownElement<ListItem> dropDown = new FormPickerDropDownElement<>(1);
dropDown.setDialogTitle("Select One");
dropDown.setOptions(Arrays.asList(new ListItem(1L, "Banana"),
    new ListItem(2L, "Orange")));
dropDown.setValue(new ListItem(1L, "Banana"));
elements.add(dropDown);