---
uid: Uno.Development.AndroidActivities
---

# Managing activities in Android

[Activities](https://developer.android.com/reference/android/app/Activity) are an integral element of the Android platform. By default your Uno Platform application runs in a single activity, but you might for example spawn a new activity when a user shares content, or picks an image from their device. This article covers Activity management in Uno.

## Android documentation links

- [Introduction to Activities](https://developer.android.com/guide/components/activities/intro-activities)

- [Understand the Activity Lifecycle](https://developer.android.com/guide/components/activities/activity-lifecycle)

## Creating/Using Android Activities

At the root of every Android Uno app, lies a `BaseActivity` class that extends from `Android.Support.V7.App.AppCompatActivity` which is part of the [Android v7 `AppCompat` Support Library](https://developer.android.com/topic/libraries/support-library/features.html#v7-appcompat). If you ever need to create a new Activity within your app or within Uno, you must be sure to extend `BaseActivity` and, if you need to apply a Theme to the activity, ensure that the Theme you set is a `Theme.AppCompat` theme (or descendant).

## Accessing Android main activity events

Uno Platform provides an API to get access to the events/overrides invoked in the main activity (commonly inheriting from `UI.Xaml.ApplicationActivity`) outside of the activity class.

In order to get access to these events, you can write the following:

```csharp
using Uno.UI.ViewManagement;

App()
{
    // ...
    ApplicationViewHelper.GetBaseActivityEvents().Create += OnCreateEvent;
    // ...
}

private void OnCreateEvent(Android.OS.Bundle savedInstanceState)
{

}
```

Note that some events are raised early during the application lifecycle and may need to be registered from the `App` constructor.