Preventing Viewport Resize Of Web Page When Android Soft Keyboard Is Active

When you're working on a web page or application for Android devices, one common issue you might encounter is the unexpected resizing of your viewport when the soft keyboard pops up. This can lead to a frustrating user experience, with elements on the page shifting around and potentially causing layout issues. In this article, we'll explore how you can prevent this viewport resize and ensure a smoother user interaction.

One effective way to tackle this problem is by utilizing the `window.innerHeight` property in JavaScript. By adjusting the viewport height dynamically based on the available screen space when the soft keyboard is active, you can maintain a consistent layout and prevent unwanted resizing.

To get started, you can listen for the keyboard events in your JavaScript code. When the keyboard becomes active, you can calculate the new height for the viewport by subtracting the height of the soft keyboard from the total screen height. This way, you can ensure that your content remains in view and doesn't get obscured by the keyboard.

Here's a simplified example of how you can achieve this using JavaScript:

// Listen for keyboard events
window.addEventListener('resize', function() {
  // Calculate new viewport height
  const newViewportHeight = window.innerHeight;
  document.documentElement.style.setProperty('--vh', `${newViewportHeight}px`);
});

In this code snippet, we're using the `resize` event listener to detect changes in the viewport size. When the event is triggered, we recalculate the viewport height and update the CSS variable `--vh` with the new value. This way, you can adapt your layout dynamically to accommodate the soft keyboard without causing unexpected resizing.

In your CSS styles, you can then use the `--vh` variable to set the height of your elements relative to the viewport height. This allows your content to adjust accordingly based on the available screen space, ensuring a seamless user experience even when the soft keyboard is active.

.container {
  height: calc(var(--vh, 1vh) * 100);
}

By incorporating this technique into your web pages or applications, you can effectively prevent viewport resizing when the Android soft keyboard is active. This approach not only improves the usability of your site but also demonstrates your attention to detail in providing a consistent and user-friendly experience for your visitors.

In conclusion, managing the viewport resizing issue caused by the Android soft keyboard is essential for delivering a polished user experience. By leveraging JavaScript and CSS techniques to adjust the viewport height dynamically, you can maintain a stable layout and prevent disruptive shifts in your content. Implementing these solutions will help you create more engaging and user-friendly web experiences for your audience.