In the Android Chrome browser, the settings of the meta viewport attribute do not take effect when the device is in full screen mode

While using the fullscreen api in Android, I noticed that the values of meta viewport attributes like initial-scale and user-scalable are not reflected in the browser when in full screen mode. However, when not in full screen mode, these values work as expected. You can test this by accessing the MDN Fullscreen API example from a mobile browser.

I have not come across any documentation stating that the meta viewport is disabled in fullscreen mode on Android. Could it be a mistake on my end or simply undocumented? Additionally, pinch and zoom functionality seems to be disabled in fullscreen.

I reported this issue on GitHub but unfortunately received no resolution. I am curious if there are alternative solutions available to address this problem.

javascriptcssfullscreenviewportresponsive

Answer №1

I discovered a new method for achieving fullscreen mode using the web app manifest without affecting the meta viewport settings.

Follow these instructions:

  1. Add the following code to the head section of your HTML file:
<link rel="manifest" href="/manifest.json">
  1. Create a manifest file with the provided template:
 {
      "short_name": "App Name",
      "name": "Full app name",
      "icons": [
        {
          "src": "launcher-icon-4x.png",
          "sizes": "192x192",
          "type": "image/png"
        }
      ],
      "start_url": "/index.html",
      "display": "fullscreen",
      "orientation": "landscape"
  }

You can find detailed information on enabling fullscreen mode using a manifest in the Google developers documentation.

The potential issue of fullscreen mode conflicting with the metaview port configuration is discussed here.

Answer №2

Regrettably, the answer is negative - one does not have control over how the meta viewport attribute gets handled. The discussion on "Full webpage and disabled zoom viewport meta tag for all mobile browsers" delves into various Android and iOS versions in fullscreen mode. Nonetheless, a workaround could involve utilizing browser/version detection to address identified bugs. While not the most elegant solution, given the fragmentation of Android devices, it may become a necessary step.

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