Usage

Start detection

To start screenshot detection call the start() method.

DetectScreenshot.instance.start();

This method will return true if the detection process has started correctly or false if it is not supported or you don't have authorisation.

if (DetectScreenshot.instance.start())
{
    trace( "detection started" );
}

When a screenshot is detected the extension will dispatch the DetectScreenshotEvent.SCREENSHOT_DETECTED event.

DetectScreenshot.instance.addEventListener( 
    DetectScreenshotEvent.SCREENSHOT_DETECTED, 
    onScreenshotDetected );

function onScreenshotDetected( event:DetectScreenshotEvent ):void
{
    trace( "onScreenshotDetected" );
}

Platform Variations

On iOS the system provides a notification whenever a screenshot is taken. This means that the event is much more precise and reliable.

On Android there is no direct way to detect screenshots so instead this extension uses a common technique of observing the user's media library and watching for additions to places where screenshots are normally stored. This approach however requires authorisation to read the user's media.

Stop detection

Whenever your application no longer needs the screenshot detection functionality you can call the stop() method to stop the detection process:

DetectScreenshot.instance.stop();

For example you should do this whenever your application is minimised.