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AlertCenter displays notifications in a manner similar to native iOS banner notifications.<br />
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iOS Example</h2>
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<pre class="brush: csharp">using Xamarin.Controls;
...

public override void ViewDidLoad ()
{
    base.ViewDidLoad ();

AlertCenter.Default.PostMessage ("Knock knock!", "Who's there?");
    AlertCenter.Default.PostMessage ("Interrupting cow.", "Interrupting cow who?",
                                UIImage.FromFile ("cow.png"), delegate {
        Console.WriteLine ("Moo!");
    });
}
</pre>
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<h2 style="background-color: white; border: 0px; font-family: myriad-pro, 'Myriad Pro', sans-serif; font-size: 24px; font-weight: normal; margin: 1.2em 0px 0.4em; padding: 0px;">
Android Example</h2>
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<span style="background-color: white; color: #555753; font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 14px; line-height: 25.200000762939453px;">Using </span><code style="background-color: #f4f4f4; border-bottom-left-radius: 4px; border-bottom-right-radius: 4px; border-top-left-radius: 4px; border-top-right-radius: 4px; border: 1px solid rgb(225, 225, 233); color: #555753; font-family: Menlo, Consolas, Monaco, 'Lucida Console', monospace; font-size: 0.9em; margin: 0px; padding: 3px 4px;">AlertCenter</code><span style="background-color: white; color: #555753; font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 14px; line-height: 25.200000762939453px;"> on Android is similar to iOS, except that you need to initialize the </span><code style="background-color: #f4f4f4; border-bottom-left-radius: 4px; border-bottom-right-radius: 4px; border-top-left-radius: 4px; border-top-right-radius: 4px; border: 1px solid rgb(225, 225, 233); color: #555753; font-family: Menlo, Consolas, Monaco, 'Lucida Console', monospace; font-size: 0.9em; margin: 0px; padding: 3px 4px;">AlertCenter</code><span style="background-color: white; color: #555753; font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 14px; line-height: 25.200000762939453px;"> with a </span><code style="background-color: #f4f4f4; border-bottom-left-radius: 4px; border-bottom-right-radius: 4px; border-top-left-radius: 4px; border-top-right-radius: 4px; border: 1px solid rgb(225, 225, 233); color: #555753; font-family: Menlo, Consolas, Monaco, 'Lucida Console', monospace; font-size: 0.9em; margin: 0px; padding: 3px 4px;">Context</code><span style="background-color: white; color: #555753; font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 14px; line-height: 25.200000762939453px;">. The permission </span><code style="background-color: #f4f4f4; border-bottom-left-radius: 4px; border-bottom-right-radius: 4px; border-top-left-radius: 4px; border-top-right-radius: 4px; border: 1px solid rgb(225, 225, 233); color: #555753; font-family: Menlo, Consolas, Monaco, 'Lucida Console', monospace; font-size: 0.9em; margin: 0px; padding: 3px 4px;">SYSTEM_ALERT_WINDOW</code><span style="background-color: white; color: #555753; font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 14px; line-height: 25.200000762939453px;"> will also need to be declared in your </span><code style="background-color: #f4f4f4; border-bottom-left-radius: 4px; border-bottom-right-radius: 4px; border-top-left-radius: 4px; border-top-right-radius: 4px; border: 1px solid rgb(225, 225, 233); color: #555753; font-family: Menlo, Consolas, Monaco, 'Lucida Console', monospace; font-size: 0.9em; margin: 0px; padding: 3px 4px;">AndroidManfiest.xml</code><span style="background-color: white; color: #555753; font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 14px; line-height: 25.200000762939453px;">.</span></div>
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<span style="background-color: white; color: #555753; font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 14px; line-height: 25.200000762939453px;"><br /></span></div>
<pre class="brush: csharp">using Xamarin.Controls;
...

protected override void OnCreate (Bundle bundle)
{
    base.OnCreate (bundle);

AlertCenter.Default.Init (Application);

AlertCenter.Default.PostMessage ("Knock knock!", "Who's there?", Resource.Drawable.Icon);
    AlertCenter.Default.PostMessage ("Interrupting cow.", "Interrupting cow who?",
                                Resource.Drawable.Icon, () => {
        Console.WriteLine ("Moo!");
    });
}
</pre>

<i>Source: https://components.xamarin.com/gettingstarted/alert-center/true</i>

Xamarin Developer - Alert Center

AlertCenter displays notifications in a manner similar to native iOS banner notifications. iOS Example using Xamarin.Controls; ... ...

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<span style="font-size: large;">Resources </span><br />
• Xamarin.com (documentation, forums, chat, etc.)<br />
• Xamarin Evolve 2013 recordings http://xamarin.com/evolve/2013<br />
• Atlanta Xamarin Users Group (Wednesday, June 19th) http://meetup.com/Atlanta-Xamarin-Users-Group/<br />
• Books (MonoTouch or iOS)<br />
• Pluralsight training videos • Conferences (ex: CodeStock in July)
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Getting Started with Xamarin.iOS

Resources • Xamarin.com (documentation, forums, chat, etc.) • Xamarin Evolve 2013 recordings http://xamarin.com/evolve/2013 • Atlan...

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Xamarin Developer - Alert Center

Getting Started with Xamarin.iOS

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