com.google.appinventor.components.runtime.util

Class ElementsUtil

java.lang.Object

com.google.appinventor.components.runtime.util.ElementsUtil

public class ElementsUtil
extends java.lang.Object

Utilities for Components that display a number of options on Screen such as ListPicker, Spinner, and ListView.

Constructor Summary

Constructors

Constructor and Description
ElementsUtil()

Method Summary

Methods

Modifier and Type	Method and Description
static YailList	elements(YailList itemList, java.lang.String componentName) Check a Yail list of items to verify that they are all strings and
static YailList	elementsFromString(java.lang.String itemString)
static int	selectionIndex(int index, YailList items)
static int	setSelectedIndexFromValue(java.lang.String value, YailList items)
static java.lang.String	setSelectionFromIndex(int index, YailList items)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ElementsUtil

public ElementsUtil()

Method Detail

elementsFromString

public static YailList elementsFromString(java.lang.String itemString)

elements

public static YailList elements(YailList itemList,
                java.lang.String componentName)

Check a Yail list of items to verify that they are all strings and

Parameters:

itemList -

componentName -

Returns:

the original list

selectionIndex

public static int selectionIndex(int index,
                 YailList items)

setSelectionFromIndex

public static java.lang.String setSelectionFromIndex(int index,
                                     YailList items)

setSelectedIndexFromValue

public static int setSelectedIndexFromValue(java.lang.String value,
                            YailList items)