How to make an icon on android through a webapp?

I found out that

<link rel="apple-touch-icon" href="touch-icon-iphone.png" />

is a way to make an icon on iPhones.

What is the way to make an icon on androids?

Also are there other 开发者_StackOverflow中文版ways to implement creating an icon which is linked to simply a mobile website?

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You actually can't. This functionality is unique to iOS devices.

EDIT: However, some browsers may use the standard favicon used by most browsers.