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copied!<p>There is another level to this. </p> <ul> <li>If you don't have an inputAccessoryView, you won't get the notification as the above explanations point out.</li> <li>However, if you have set up an inputAccessoryView for the text view, then you will still receive a UIKeyboard notification when the external kbd is present -- the logic being that you will need to animate your view into the right location so you need the animation information contained in the notification. </li> </ul> <p>Fortunately, there is enough information in the event to figure out whether the kbd will be presented, though it's still a little involved.</p> <p>If we examine the notification dictionary we see this information:</p> <pre><code>UIKeyboardFrameBeginUserInfoKey = NSRect: {{0, 1024}, {768, 308}} UIKeyboardFrameEndUserInfoKey = NSRect: {{0, 980}, {768, 308}} </code></pre> <p>That was in Portrait; if we rotate the device to PortraitUpsideDown we get:</p> <pre><code>UIKeyboardFrameBeginUserInfoKey = NSRect: {{0, -308}, {768, 308}} UIKeyboardFrameEndUserInfoKey = NSRect: {{0, -264}, {768, 308}} </code></pre> <p>Similarly in LandscapeLeft and LandscapeRight we get different start and end locations.</p> <p>Hmm... what do these numbers mean? You can see that the kbd is offscreen to start, but it does move a little. To make things worse, depending on the device orientation, the kbd locations are different. </p> <p>However, we do have enough information to figure out what's going on:</p> <ol> <li>The kbd moves from just offscreen at the physical bottom of the device to the same height as the inputAccessoryView (but obscured by it)</li> <li>So in the Portrait case it moves from 1024 to 980 -- we must have an inputAccessoryView with a height of 44, which is indeed the case.</li> <li>So in Portrait if the end y + the inputAccessoryView height == screen height, then the kbd is not visible. You need to handle the other rotations, but that's the idea.</li> </ol>

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