ACTIONSCRIPT 3 Developer’s Guide en

ACTIONSCRIPT 3.0 DEVELOPER’S GUIDE
Working with cameras
The next step is to create a new video object and attach the Camera object to it.
The third step is to add the video object to the display list. You need to perform steps 2 and 3 because the Camera class
does not extend the DisplayObject class so it cannot be added directly to the display list. To display the camera’s
captured video, you create a new video object and call the attachCamera() method.
The following code shows these three steps:
var cam:Camera = Camera.getCamera();
var vid:Video = new Video();
vid.attachCamera(cam);
addChild(vid);
Note that if a user does not have a camera installed, the application does not display anything.
In real life, you need to perform additional steps for your application. See “Verifying that cameras are installed” on
page 522 and “Detecting permissions for camera access” on page 523 for further information.
More Help topics
Lee Brimelow: How to access the camera on Android devices
Verifying that cameras are installed
Flash Player 9 and later, Adobe AIR 1.0 and later
Before you attempt to use any methods or properties on a camera instance, you’ll want to verify that the user has a
camera installed. There are two ways to check whether the user has a camera installed:
Check the static Camera.names property which contains an array of camera names which are available. Typically
this array will have one or fewer strings, as most users will not likely have more than one camera installed at a time.
The following code demonstrates how you could check the Camera.names property to see if the user has any
available cameras:
if (Camera.names.length > 0)
{
trace("User has at least one camera installed.");
var cam:Camera = Camera.getCamera(); // Get default camera.
}
else
{
trace("User has no cameras installed.");
}
Check the return value of the static Camera.getCamera() method. If no cameras are available or installed, this
method returns null, otherwise it returns a reference to a Camera object. The following code demonstrates how
you could check the Camera.getCamera() method to see if the user has any available cameras:
Last updated 6/6/2012
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