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Tip: Calculating Area Covered by Keyboard

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Tip: Calculating Area Covered by Keyboard

· Mobile Zone
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As you know if you’ve ever tried it, it’s harder than you’d think it ought to be to figure out just where the keyboard is coming up on the screen. Here’s a tip which looks like a good approach:

Calculating Area Covered by Keyboard

I’ve seen several approaches to this so far, but they often hard code a certain position of the view or sizes. Like assuming that the covered view always reaches towards the bottom of the screen or always has a certain amount of space taken away from it by the status bar, navigation bar and possibly toolbar.

The whole thing gets even more complicated by the fact the the coordinate system of the app’s window is always in portrait even though your app rotates. So is the frame of the keyboard which you can get from an info dictionary in several notifications. I’ll show you the most universally working method I was able to come up with…

Those bars at the bottom are usually the tricky bit, we find. If this actually does handle them properly in just that little bit of code, we’ll be pretty impressed!

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Published at DZone with permission of Alex Curylo, DZone MVB. See the original article here.

Opinions expressed by DZone contributors are their own.

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