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Android detect keyboard open javascript

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You can get just the layout you want, call it up exactly when and how you want, and never worry about what the operating system wants to do. That was my solution to the problem, anyway. Thanks Robin, the question wasn't only directed at you But i don't want to build keyboards for all sorts of languages. There must be a better way. As far as I was able to determine the only way to detect the presence or not of the software keyboard is to maintain an interrupt that monitors your contents dimensions and then calls relevant functions you write according to whether it has been enlarged or reduced in other words the keyboard has popped up or down.

In my view this is a glaring omission by Google who ought to have created an event for this from the very start. It's an easy matter to save data for different key layouts for other languages too, at minimal memory overhead. I have attached an example of a custom keyboard I created for a chat app.

Using JavaScript in Android WebView

The spec is pretty vague about how viewport units should be calculated. With mobile devices, we're often concerned with the vertical height, so let's look specifically at viewport height vh :. So yeah, no clear guidance there when it comes to handling device and browser-specific differentiations. If you start scrolling, it's a different story.


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Once you get past a piece of the browser interface, like the address bar, the vh value would update and the result was an awkward jump in the content. Safari for iOS was one of the first mobile browsers to update their implementation by choosing to define a fixed value for the vh based on the maximum height of the screen. By doing so, the user would not experience jumps on the page once the address bar went out of view. Chrome's mobile browser followed suit around a year ago. As of this writing, there is a ticket to address this in Firefox Android.


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  • While using a fixed value is nice, it also means that you cannot have a full-height element if the address bar is in view. The bottom of your element will be cropped. The idea struck me that CSS Custom Properties and a few lines of JavaScript might be the perfect way to get the consistent and correct sizing I needed. In JavaScript, you can always get the value of the current viewport by using the global variable window. This value takes the browser's interface into account and is updated when its visibility changes.

    The trick is to store the viewport value in a CSS variable and apply that to the element instead of the vh unit. Let's say our CSS custom variable is --vh for this example. That means we will want to apply it in our CSS like this:.

    HTML/JS How to check if the touchscreen keyboard is open? (Android forum at Coderanch)

    As a result, we can now use --vh as our height value like we would any other vh unit, multiply it by and we have the full height we want. While our work might look done at this point, those of you with an astute eye for detail may have caught that the JavaScript fires but never updates the size of our element when the viewport's height changes. Go ahead and try resizing the demo above. We can update the value of --vh by listening to the window resize event. This is handy in case the user rotates the device screen, like from landscape to portrait, or the navigation moves out of view on scroll.

    Also, you may want to implement a debounce method for the resize event to avoid triggering to many events while the user is resizing their browser's window.

    Your Answer

    For example, this comes up a lot with ::focus. Also, browsers tend to update very fast these days, so beware that today's solution may not work tomorrow.

    Detecting keyboard open/close

    Thank you very much will try this to fix my website soon. Could you elaborate your use case? You need an in-flow full-height element at the top of the page? If you want new devices to be supported, please contribute to Mobile-Detect instead. To run generate-script it is necessary to have Mobile-Detect as a sibling directory to mobile-detect.


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    • I tried to use git subtree but had some problems on Mac OS X - probably my fault If you want, you can donate to Mobile-Detect. Git github.

      Test your JavaScript, CSS, HTML or CoffeeScript online with JSFiddle code editor.

      Test with RunKit. Ready to take your JavaScript development to the next level? Meet npm Enterprise - the ultimate in enterprise JavaScript. You can find out information about the device rendering your web page: mobile or not if mobile, whether phone or tablet operating system Mobile Grade A, B, C specific versions e. WebKit Current master branch is using detection logic from Mobile-Detect 2.

      Warning As mentioned later, "User-Agent" based detection is not a reliable solution in most cases, because: The rules regular expressions are constantly out-dated and incomplete You have to update the detection code continuously There are other ways to detect how your web application should behave: feature detection, e.