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If you find yourself struggling to get the Apache Cordova screen orientation lock plugin to work, the problem is most likely that you are calling the .lock() method before the ‘deviceready’ event has fired. To fix this problem, simply create a call back function containing your .lock() method call, then pass this callback function as an argument to the deviceready event listener like so =>
First, make sure to install the screen orientation plugin for apache cordova
$ cordova plugin add cordova-plugin-screen-orientation
Then, rewrite your code to look something like this…