Activity Action: Launch application installer.

Input: The data must be a content: or file: URI at which the application can be retrieved. As of NoType:android/os/Build$VERSION_CODES;Href=../../../reference/android/os/Build.VERSION_CODES.html#JELLY_BEAN_MR1, you can also use "package:" to install an application for the current user that is already installed for another user. You can optionally supply Intent.ExtraInstallerPackageName, Intent.ExtraNotUnknownSource, Intent.ExtraAllowReplace, and Intent.ExtraReturnResult.

Output: If Intent.ExtraReturnResult, returns whether the install succeeded.

[Android Documentation]