How do I lock the orientation to portrait mode in a iPhone Web Application

Question

I m building a iPhone Web Application and want to lock the orientation to portrait mode   is this possible   Are there any web-kit extensions to do this   Please note this is an application written in HTML and JavaScript for Mobile Safari  it is NOT a native application written in Objective-C

User · Answer

Screen lockOrientation   solves this problem  though support is less than universal at the time  April 2017    https   www w3 org TR screen-orientation   https   developer mozilla org en-US docs Web API Screen lockOrientation

User · Answer

I like the idea of telling the user to put his phone back into portrait mode  Like it s mentioned here  http   tech sarathdr com featured prevent-landscape-orientation-of-iphone-web-apps     but utilising CSS instead of JavaScript

User · Answer

The following code was used in our html5 game     document  ready function             window                 bind  orientationchange   function                   if  window orientation   180    0                        document body  css  -webkit-transform-origin                               css  -webkit-transform                                                        else                                         if   window orientation  gt  0      clockwise                        document body  css  -webkit-transform-origin    200px 190px                           css  -webkit-transform     rotate -90deg                                               else                          document body  css  -webkit-transform-origin    280px 190px                           css  -webkit-transform     rotate 90deg                                                                     trigger  orientationchange

User · Answer

While you cannot prevent orientation change from taking effect you can emulate no change as stated in other answers   First detect device orientation or reorientation and  using JavaScript  add a class name to your wrapping element  in this example I use the body tag    function deviceOrientation       var body   document body    switch window orientation        case 90        body classList             body classList add  rotation90          break      case -90        body classList             body classList add  rotation-90          break      default        body classList             body classList add  portrait          break        window addEventListener  orientationchange   deviceOrientation   deviceOrientation      Then if the device is landscape  use CSS to set the body width to the viewport height and the body height to the viewport width  And let   s set the transform origin while we   re at it    media screen and  orientation  landscape      body       width  100vh      height  100vw      transform-origin  0 0          Now  reorient the body element and slide  translate  it into position   body rotation-90     transform  rotate 90deg  translateY -100      body rotation90     transform  rotate -90deg  translateX -100

User · Answer

You can specify CSS styles based on viewport orientation  Target the browser with body orient  landscape   or body orient  portrait    http   www evotech net blog 2007 07 web-development-for-the-iphone   However     Apple s approach to this issue is to allow the developer to change the CSS based on the orientation change but not to prevent re-orientation completely  I found a similar question elsewhere   http   ask metafilter com 99784 How-can-I-lock-iPhone-orientation-in-Mobile-Safari

User · Answer

I have a similar issue  but to make landscape    I believe the code below should do the trick    x000D   x000D    This code consider you are using the fullscreen portrait mode x000D  function processOrientation forceOrientation    x000D    var orientation   window orientation  x000D    if  forceOrientation    undefined  x000D      orientation   forceOrientation  x000D    var domElement   document getElementById  fullscreen-element-div    x000D    switch orientation    x000D      case 90  x000D        var width   window innerHeight  x000D        var height   window innerWidth  x000D        domElement style width    100vh   x000D        domElement style height    100vw   x000D        domElement style transformOrigin  50  50    x000D        domElement style transform  translate    window innerWidth 2-width 2   px     window innerHeight 2-height 2   px  rotate -90deg    x000D        break  x000D      case -90  x000D        var width   window innerHeight  x000D        var height   window innerWidth  x000D        domElement style width    100vh   x000D        domElement style height    100vw   x000D        domElement style transformOrigin  50  50    x000D        domElement style transform  translate    window innerWidth 2-width 2   px     window innerHeight 2-height 2   px  rotate 90deg    x000D        break  x000D      default  x000D        domElement style width    100vw   x000D        domElement style height    100vh   x000D        domElement style transformOrigin     x000D        domElement style transform     x000D        break  x000D      x000D    x000D  window addEventListener  orientationchange   processOrientation   x000D  processOrientation    x000D   lt html gt  x000D   lt head gt  lt  head gt  x000D   lt body style  margin 0 padding 0 overflow  hidden   gt  x000D     lt div id  fullscreen-element-div  style  background-color  00ff00 width 100vw height 100vh margin 0 padding 0  gt  Test x000D     lt br gt  x000D     lt input type  button  value  force 90  onclick  processOrientation 90      gt  lt br gt  x000D     lt input type  button  value  force -90  onclick  processOrientation -90      gt  lt br gt  x000D     lt input type  button  value  back to normal  onclick  processOrientation       gt  x000D     lt  div gt  x000D   lt  body gt  x000D   lt  html gt  x000D   x000D   x000D

User · Answer

Inspired from  Grumdrig s answer  and because some of the used instructions would not work  I suggest the following script if needed by someone else         document  ready function             function reorient e            var orientation   window screen orientation type             body  gt  div   css  -webkit-transform    orientation     landscape-primary     orientation     landscape-secondary      rotate -90deg                        window  on  orientationchange  function            reorient                  window setTimeout reorient  0

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I came up with this CSS only method of rotating the screen using media queries  The queries are based on screen sizes that I found here  480px seemed to be a good as no few devices had more than 480px width or less than 480px height    media  max-height  480px  and  min-width  480px  and  max-width  600px         html          -webkit-transform  rotate -90deg              -moz-transform  rotate -90deg               -ms-transform  rotate -90deg                -o-transform  rotate -90deg                   transform  rotate -90deg           -webkit-transform-origin  left top             -moz-transform-origin  left top              -ms-transform-origin  left top               -o-transform-origin  left top                  transform-origin  left top          width  320px    this is the iPhone screen width            position  absolute          top  100               left  0

User · Answer

CSS hack to prevent layout breaking in landscape    e g  screens larger than 320px   html     width  320px    overflow-x  hidden      This  or a similar CSS solution  will at least preserve your layout if that is what you are after    The root solution is accounting for device s capabilities rather than attempting to limit them  If the device doesn t allow you the appropriate limitation than a simple hack is your best bet since the design is essentially incomplete  The simpler the better

User · Answer

In coffee if anyone needs it         window  bind  orientationchange   - gt          if window orientation   180    0               document body  css                  -webkit-transform-origin                        -webkit-transform               else             if window orientation  gt  0                   document body  css                      -webkit-transform-origin     200px 190px                       -webkit-transform     rotate -90deg               else                   document body  css                      -webkit-transform-origin     280px 190px                       -webkit-transform     rotate 90deg

User · Answer

This is a pretty hacky solution  but it s at least something     The idea is to use a CSS transform to rotate the contents of your page to quasi-portrait mode  Here s JavaScript  expressed in jQuery  code to get you started          document  ready function        function reorient e        var portrait    window orientation   180    0          body  gt  div   css  -webkit-transform    portrait    rotate -90deg                window onorientationchange   reorient    window setTimeout reorient  0         The code expects the entire contents of your page to live inside a div just inside the body element  It rotates that div 90 degrees in landscape mode - back to portrait   Left as an exercise to the reader  the div rotates around its centerpoint  so its position will probably need to be adjusted unless it s perfectly square   Also  there s an unappealing visual problem  When you change orientation  Safari rotates slowly  then the top-level div snaps to 90degrees different  For even more fun  add  body  gt  div   -webkit-transition  all 1s ease-in-out      to your CSS  When the device rotates  then Safari does  then the content of your page does  Beguiling

User · Answer

This answer is not yet possible  but I am posting it for  future generations   Hopefully  some day we will be able to do this via the CSS  viewport rule    viewport       orientation  portrait      Here is the  Can I Use  page  as of 2019 only IE and Edge   https   caniuse com  feat mdn-css at-rules viewport orientation  Spec in process   https   drafts csswg org css-device-adapt  orientation-desc  MDN  https   developer mozilla org en-US docs Web CSS  viewport orientation  Based on the MDN browser compatibility table and the following article  looks like there is some support in certain versions of IE and Opera  http   menacingcloud com  c cssViewportOrMetaTag  This JS API Spec also looks relevant  https   w3c github io screen-orientation   I had assumed that because it was possible with the proposed  viewport rule  that it would be possible by setting orientation in the viewport settings in a meta tag  but I have had no success with this thus far   Feel free to update this answer as things improve

User · Answer

Click here for a tutorial and working example from my website   You no longer need to use hacks just to look jQuery Mobile Screen Orientation nor should you use PhoneGap anymore  unless you re actually using PhoneGap   To make this work in the year 2015 we need    Cordova  any version though anything above 4 0 is better  PhoneGap  you can even use PhoneGap  plugins are compatible    And one of these plugins depending on your Cordova version    net yoik cordova plugins screenorientation  Cordova  lt  4    cordova plugin add net yoik cordova plugins screenorientation   cordova plugin add cordova-plugin-screen-orientation  Cordova    4    cordova plugin add cordova-plugin-screen-orientation  And to lock screen orientation just use this function   screen lockOrientation  landscape      To unlock it   screen unlockOrientation      Possible orientations    portrait-primary The orientation is in the primary portrait mode  portrait-secondary The orientation is in the secondary portrait mode  landscape-primary The orientation is in the primary landscape mode  landscape-secondary The orientation is in the secondary landscape mode  portrait The orientation is either portrait-primary or portrait-secondary  sensor   landscape The orientation is either landscape-primary or landscape-secondary  sensor

User · Answer

Maybe in a new future it will have an out-of-the-box soludion     As for May 2015   there is an experimental functionality that does that    But it only works on Firefox 18   IE11   and Chrome 38    However  it does not work on Opera or Safari yet   https   developer mozilla org en-US docs Web API Screen lockOrientation Browser compatibility  Here is the current code for the compatible browsers   var lockOrientation   screen lockOrientation    screen mozLockOrientation    screen msLockOrientation   lockOrientation  landscape-primary

[orientation] How do I lock the orientation to portrait mode in a iPhone Web Application?

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