# Camera.onActivity

#### Availability

Flash Player 6.

#### Usage

    active_cam.onActivity = function(activity) {
    	// Your code here
    }

#### Parameters

`activity` A Boolean value set to `true` when the camera starts detecting motion, `false` when it stops.

#### Returns

Nothing.

#### Description

Event handler; invoked when the camera starts or stops detecting motion. If you want to respond to this event handler, you must create a function to process its `activity` value.

To specify the amount of motion required to invoke `Camera.onActivity(true)` and the amount of time that must elapse without activity before invoking `Camera.onActivity(false)`, use `Camera.setMotionLevel()`.

#### Example

The following example displays `true` or `false` in the Output window when the camera starts or stops detecting motion.

    // Assumes a Video object named "myVideoObject" is on the Stage
    c = Camera.get();
    myVideoObject.attachVideo(c);
    c.setMotionLevel(10, 500);
    c.onActivity = function(mode)
    {
    	trace(mode);
    };

#### See also

Camera.onActivity`,` `Camera.setMotionLevel()`