Adobe flash player is needed to run online flash content on your android smartphone. Many android devices come with adobe flash player pre-installed but you can follow the following procedure to manually install the latest version.

How To Manually Install Adobe Flash Player On Your Android Device

=> Go to this link
=> Scroll down until you see Android 4.0 archives.
=> Click on the latest version(usually first link) to download.

How To Check If Adobe Flash Player Is Installed Correctly