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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<meta content="App Inventor for Android" name="description" />
<meta content="Android, Blocks App Inventor, Mobile, Phone, IDE" name="keywords" />
<title>
Social Components - App Inventor for Android
</title>
<link href="/static/images/appinventor-16.png" rel="SHORTCUT ICON" type="image/ico" />
<link href="/static/images/appinventor-16.png" rel="icon" type="image/png" />
<link href="/static/css/appinventor.css" rel="stylesheet" />
<script src="http://www.google.com/js/gweb/analytics/autotrack.js">
</script>
<script>
var tracker = new gweb.analytics.AutoTrack({
profile: 'UA-5856106-2'
});
</script>
<script language = "JavaScript" src="/static/scripts/HeaderAndFooter.js"></script>
<style>
img.c3 {border-width:0}
dt.c2 {font-style: italic}
div.c1 {clear:both;}
</style>
</head>
<body>
<script language = "JavaScript">createHeader('<div id="navigation-breadcrumb"> <a href="/learn/">Learn</a> > <a href="/learn/reference/">Reference</a> > Social > ');</script><br>
<div id="aiac">
<div class="main-container">
<div class="customhr customhr-gray">
</div>
<div class="content">
<div class="content-body">
<div class="learn-page">
<h1>
Social Components
</h1>
<ul>
<li>
<a href="#ContactPicker">
ContactPicker
</a>
</li>
<li>
<a href="#EmailPicker">
EmailPicker
</a>
</li>
<li>
<a href="#PhoneCall">
PhoneCall
</a>
</li>
<li>
<a href="#PhoneNumberPicker">
PhoneNumberPicker
</a>
</li>
<li>
<a href="#Texting">
Texting
</a>
</li>
<li>
<a href="#Twitter">
Twitter
</a>
</li>
</ul>
<h2 id="ContactPicker">
ContactPicker
</h2>
<img alt="" src="images/contactpicker.png" />
<p>
Use a contact picker component to let the user choose an entry from the Android
contact list.
</p>
<p>
A contact picker is a button that displays a list of contacts to choose from when
the user taps it. After the user has made a selection, the following properties are
set:
</p>
<ul>
<li>
<code>
ContactName
</code>
: contact's name.
</li>
<li>
<code>
EmailAddress
</code>
: contact's primary email address.
</li>
<li>
<code>
Picture
</code>
: name of the file containing the contact's image, which can
be used as a
<code>
Picture
</code>
property value for the
<code>
Image
</code>
or
<code>
ImageSprite
</code>
component.
</li>
</ul>
<p>
Other properties affect the appearance of the button (including
<code>
TextAlignment
</code>
and
<code>
BackgroundColor
</code>
) and whether it can be
tapped (
<code>
Enabled
</code>
).
</p>
<h3>
Properties
</h3>
<dl>
<dt>
<code>
Enabled
</code>
</dt>
<dd>
If set, user can tap contact picker to use it.
</dd>
<dt>
<code>
Image
</code>
</dt>
<dd>
Image to display on contact picker
</dd>
<dt>
<code>
BackgroundColor
</code>
</dt>
<dd>
Color for contact picker background.
</dd>
<dt class="c2">
<code>
ContactName
</code>
</dt>
<dd>
Name of selected contact.
</dd>
<dt class="c2">
<code>
EmailAddress
</code>
</dt>
<dd>
Primary email address of selected contact.
</dd>
<dt class="c2">
<code>
Picture
</code>
</dt>
<dd>
Picture of selected contact.
</dd>
<dt>
<code>
FontBold
</code>
</dt>
<dd>
If set, contact picker text is displayed in bold.
</dd>
<dt>
<code>
FontItalic
</code>
</dt>
<dd>
If set, contact picker text is displayed in italics.
</dd>
<dt>
<code>
FontSize
</code>
</dt>
<dd>
Point size for contact picker text.
</dd>
<dt>
<code>
FontTypeface
</code>
</dt>
<dd>
Font family for contact picker text.
</dd>
<dt>
<code>
Text
</code>
</dt>
<dd>
Text to display on contact picker.
</dd>
<dt>
<code>
TextAlignment
</code>
</dt>
<dd>
Left, center, or right.
</dd>
<dt>
<code>
TextColor
</code>
</dt>
<dd>
Color for contact picker text.
</dd>
<dt>
<code>
Visible
</code>
</dt>
<dd>
If set, contact picker is visible.
</dd>
<dt>
<code>
Width
</code>
</dt>
<dd>
Contact picker width (x-size).
</dd>
<dt>
<code>
Height
</code>
</dt>
<dd>
Contact picker height (y-size).
</dd>
</dl>
<h3>
Events
</h3>
<dl>
<dt>
<code>
AfterPicking()
</code>
</dt>
<dd>
Called after user picks a contact.
</dd>
<dt>
<code>
BeforePicking()
</code>
</dt>
<dd>
Called after user taps contact picker but before contact list is displayed.
</dd>
<dt>
<code>
GotFocus()
</code>
</dt>
<dd>
Contact picker became the focused component.
</dd>
<dt>
<code>
LostFocus()
</code>
</dt>
<dd>
Contact picker stopped being the focused component.
</dd>
</dl>
<h2 id="EmailPicker">
EmailPicker
</h2>
<img alt="" src="images/emailpicker.png" />
<p>
Use an email picker component to let the user enter a user's email address from the
Android contact list.
</p>
<p>
An email picker is a text box in which a user can begin entering an email address
of a contact and be offered auto-completion. The initial value of the box and the
value after user entry is in the
<code>
Text
</code>
property. If the
<code>
Text
</code>
property is initially empty, the contents of the
<code>
Hint
</code>
property will be faintly shown in the text box as a hint to the
user.
</p>
<p>
Other properties affect the appearance of the email picker (including
<code>
TextAlignment
</code>
and
<code>
BackgroundColor
</code>
) and whether it can be
used (
<code>
Enabled
</code>
).
</p>
<p>
Email pickers are usually used with a button. The user taps the button when text
entry is complete.
</p>
<h3>
Properties
</h3>
<dl>
<dt>
<code>
Enabled
</code>
</dt>
<dd>
If set, user can tap email picker to use it.
</dd>
<dt>
<code>
BackgroundColor
</code>
</dt>
<dd>
Color for email picker background.
</dd>
<dt>
<code>
FontBold
</code>
</dt>
<dd>
If set, email picker text is displayed in bold.
</dd>
<dt>
<code>
FontItalic
</code>
</dt>
<dd>
If set, email picker text is displayed in italics.
</dd>
<dt>
<code>
FontSize
</code>
</dt>
<dd>
Point size for email picker text.
</dd>
<dt>
<code>
FontTypeface
</code>
</dt>
<dd>
Font family for email picker text.
</dd>
<dt>
<code>
Text
</code>
</dt>
<dd>
Initial text to display in email picker.
</dd>
<dt>
<code>
TextAlignment
</code>
</dt>
<dd>
Left, center, or right.
</dd>
<dt>
<code>
TextColor
</code>
</dt>
<dd>
Color for email picker text.
</dd>
<dt>
<code>
Hint
</code>
</dt>
<dd>
If Text property is empty, Hint is shown in gray.
</dd>
<dt>
<code>
Visible
</code>
</dt>
<dd>
If set, email picker is visible.
</dd>
<dt>
<code>
Width
</code>
</dt>
<dd>
Email picker width (x-size).
</dd>
<dt>
<code>
Height
</code>
</dt>
<dd>
Email picker height (y-size).
</dd>
</dl>
<h3>
Events
</h3>
<dl>
<dt>
<code>
GotFocus()
</code>
</dt>
<dd>
Email picker became the focused component.
</dd>
<dt>
<code>
LostFocus()
</code>
</dt>
<dd>
Email picker stopped being the focused component.
</dd>
</dl>
<h2 id="PhoneCall">
PhoneCall
</h2>
<img alt="" src="images/phonecall.png" />
<p>
Use this component to dial the phone and make a call.
</p>
<p>
<code>
PhoneCall
</code>
is a non-visible component that makes a phone call to the
number specified in the
<code>
PhoneNumber
</code>
property, which can be set either
in the Designer or Blocks Editor. You can use the
<code>
MakePhoneCall
</code>
method
to make a phone call programatically from your app.
</p>
<p>
This component is often used with the
<code>
ContactPicker
</code>
component, which
lets the user select from the contacts stored on the phone and sets the
<code>
PhoneNumber
</code>
property to the contact's phone number.
</p>
<p>
To directly specify the phone number, set the
<code>
PhoneNumber
</code>
property to
a
<code>
Text
</code>
with the specified digits (for example, "6505551212"). The
number can be formatted with hyphens, periods, and parentheses; they are ignored.
You can't include spaces in the number.
</p>
<h3>
Properties
</h3>
<dl>
<dt>
<code>
PhoneNumber
</code>
</dt>
<dd>
Phone number to dial.
</dd>
</dl>
<h3>
Methods
</h3>
<dl>
<dt>
<code>
MakePhoneCall()
</code>
</dt>
<dd>
Dials the number specified by the component's
<code>
PhoneNumber
</code>
property.
</dd>
</dl>
<h2 id="PhoneNumberPicker">
PhoneNumberPicker
</h2>
<img alt="" src="images/phonenumberpicker.png" />
<p>
Use this component to allow users to choose a phone number from a list of Android
contacts' phone numbers.
</p>
<p>
When the user taps a phone number picker button, it displays a list of the phone
numbers of contacts to choose from. After the user has made a selection, the
following properties will be set to information about the chosen contact:
</p>
<ul>
<li>
<code>
ContactName
</code>
: contact's name.
</li>
<li>
<code>
PhoneNumber
</code>
: contact's selected phone number.
</li>
<li>
<code>
EmailAddress
</code>
: contact's primary email address.
</li>
<li>
<code>
Picture
</code>
: name of the file containing the contact's image, which can
be used as a
<code>
Picture
</code>
property value for the
<code>
Image
</code>
or
<code>
ImageSprite
</code>
component.
</li>
</ul>
<p>
Other properties affect the appearance of the button (including
<code>
TextAlignment
</code>
and
<code>
BackgroundColor
</code>
) and whether it can be
tapped (
<code>
Enabled
</code>
).
</p>
<h3>
Properties
</h3>
<dl>
<dt>
<code>
Enabled
</code>
</dt>
<dd>
If set, user can tap phone number picker to use it.
</dd>
<dt>
<code>
Image
</code>
</dt>
<dd>
Image to display on phone number picker.
</dd>
<dt>
<code>
BackgroundColor
</code>
</dt>
<dd>
Color for phone number picker background.
</dd>
<dt class="c2">
<code>
ContactName
</code>
</dt>
<dd>
Name of selected contact.
</dd>
<dt class="c2">
<code>
EmailAddress
</code>
</dt>
<dd>
Primary email address of selected contact.
</dd>
<dt class="c2">
<code>
PhoneNumber
</code>
</dt>
<dd>
Selected phone number of selected contact.
</dd>
<dt class="c2">
<code>
Picture
</code>
</dt>
<dd>
Picture of selected contact.
</dd>
<dt>
<code>
FontBold
</code>
</dt>
<dd>
If set, phone number picker text is displayed in bold.
</dd>
<dt>
<code>
FontItalic
</code>
</dt>
<dd>
If set, phone number picker text is displayed in italics.
</dd>
<dt>
<code>
FontSize
</code>
</dt>
<dd>
Point size for phone number picker text.
</dd>
<dt>
<code>
FontTypeface
</code>
</dt>
<dd>
Font family for phone number picker text.
</dd>
<dt>
<code>
Text
</code>
</dt>
<dd>
Text to display on phone number picker.
</dd>
<dt>
<code>
TextAlignment
</code>
</dt>
<dd>
Left, center, or right.
</dd>
<dt>
<code>
TextColor
</code>
</dt>
<dd>
Color for phone number picker text.
</dd>
<dt>
<code>
Visible
</code>
</dt>
<dd>
If set, phone number picker is visible.
</dd>
<dt>
<code>
Width
</code>
</dt>
<dd>
Phone number picker width (x-size).
</dd>
<dt>
<code>
Height
</code>
</dt>
<dd>
Phone number picker height (y-size).
</dd>
</dl>
<h3>
Events
</h3>
<dl>
<dt>
<code>
AfterPicking()
</code>
</dt>
<dd>
Called after user picks a phone number.
</dd>
<dt>
<code>
BeforePicking()
</code>
</dt>
<dd>
Called after user taps phone number picker but before phone number list is
displayed.
</dd>
<dt>
<code>
GotFocus()
</code>
</dt>
<dd>
Phone number picker became the focused component.
</dd>
<dt>
<code>
LostFocus()
</code>
</dt>
<dd>
Phone number picker stopped being the focused component.
</dd>
</dl>
<h2 id="Texting">
Texting
</h2>
<img alt="" src="images/texting.png" />
<p>
A component that will, when the
<code>SendMessage</code>
method is called, send the text message specified in the
<code>Message</code>
property to the phone number specified in the
<code>PhoneNumber</code>
property.
</p>
<p>
If the
<code>ReceivingEnabled</code>
property is set to 1 messages will <b>not</b> be received. If
<code>ReceivingEnabled</code>
is set to 2 messages will be received only when the application is running. Finally if
<code>ReceivingEnabled</code>
is set to 3, messages will be received when the application
is running <b>and</b> when the application is not running
they will be queued and a notification displayed to the user.
</p>
<p>
When a message arrives, the
<code>MessageReceived</code>
event is raised and provides the sending number and message.
</p>
<p>
An app that includes this component will receive messages even when it is in the background (i.e. when it's not visible on the screen) and, moreso, even if the app is not running, so long as it's installed on the phone. If the phone receives a text message when the app is not in the foreground, the phone will show a notification in the notification bar. Selecting the notification will bring up the app. As an app developer, you'll probably want to give your users the ability to control ReceivingEnabled so that they can make the phone ignore text messages.
</p>
<p>
If the GoogleVoiceEnabled property is true, messages can be sent over Wifi using Google Voice. This option requires that the user have a Google Voice account and that the mobile Voice app is installed on the phone. The Google Voice option works only on phones that support Android 2.0 (Eclair) or higher.
</p>
<p>
To specify the phone number (e.g., 650-555-1212), set the
<code>PhoneNumber</code>
property to a Text string with the specified digits (e.g., 6505551212). Dashes, dots, and parentheses may be included (e.g., (650)-555-1212) but will be ignored; spaces may not be included.
</p>
<p>
Another way for an app to specify a phone number would be to include a
<code>PhoneNumberPicker</code>
component, which lets the users select a phone numbers from the ones stored in the the phone's contacts.
</p>
<h3>Properties</h3>
<dl>
<dt><code>GoogleVoiceEnabled</code></dt>
<dd>
If true, then SendMessage will attempt to send messages
over Wifi using Google Voice. This requires that the
Google Voice app must be installed and set up on the phone
or tablet, with a Google Voice account. If
GoogleVoiceEnabled is false, the device must have phone and
texting service in order to send or receive messages with
this component.
</dd>
<dt><code>Message</code></dt>
<dd>The message that will be sent when the SendMessage method is called.</dd>
<dt><code>PhoneNumber</code></dt>
<dd>
The number that the message will be sent to when the
SendMessage method is called. The number is a text string
with the specified digits (e.g., 6505551212). Dashes,
dots, and parentheses may be included (e.g.,
(650)-555-1212) but will be ignored; spaces should not be
included.
</dd>
<dt><code>ReceivingEnabled</code></dt>
<dd>
If set to 1 (OFF) no messages will be received. If set to
2 (FOREGROUND) or3 (ALWAYS) the component will respond to
messages if it is running. If theapp is not running then
the message will be discarded if set to 2(FOREGROUND). If
set to 3 (ALWAYS) and the app is not running the phone
willshow a notification. Selecting the notification will
bring up the appand signal the MessageReceived event.
Messages received when the appis dormant will be queued,
and so several MessageReceived events mightappear when the
app awakens. As an app developer, it would be a good idea
to give your users control over this property, so they can
maketheir phones ignore text messages when your app is
installed.
</dd>
</dl>
<h3>Events</h3>
<dl>
<dt><code>MessageReceived(text number, text messageText)</code></dt>
<dd>Event that's raised when a text message is received by the phone.</dd>
</dl>
<h3>Methods</h3>
<dl>
<dt><code>SendMessage()</code></dt>
<dd>Send a text message</dd>
</dl>
<h2 id="Twitter">
Twitter
</h2>
<img alt="" src="images/twitter.png" />
<p>
This component allows users to interact with Twitter.
</p>
<p>
This non-visible component enables communication with Twitter. Once a user has logged in (
<code>
Authorize
</code>
) and the login has been
confirmed successful by the
<code>
IsAuthorized
</code>
event, you can use the
following methods:
</p>
<ul>
<li>
Search Twitter for tweets or labels (
<code>
SearchTwitter
</code>
).
</li>
<li>
Set the status of the logged-in user (
<code>
SetStatus
</code>
).
</li>
<li>
Send a direct message to a specific user (
<code>
DirectMessage
</code>
).
</li>
<li>
Receive the most recent direct messages (
<code>
RequestDirectMessages
</code>
).
</li>
<li>
Follow a user (
<code>
Follow
</code>
).
</li>
<li>
Unfollow a user (
<code>
StopFollowing
</code>
.)
</li>
<li>
Get the list of users who follow the logged-in user
(
<code>
RequestFollowers
</code>
).
</li>
<li>
Get the most recent messages in the user's timeline.
(
<code>
RequestFriendTimeline
</code>
).
</li>
<li>
Get the most recent mentions of the logged-in user
(
<code>
RequestMentions
</code>
).
</li>
</ul>
<p>
In general, you invoke one of these methods and the result will become available
when the corresponding receipt event is signaled. For example, if you call
<code>
RequestFollowers
</code>
, then the
<code>
FollowersReceived
</code>
event will