exposure 1.0.2

Sensor widget for flutter that notifies you when it is exposured

Exposure Widget

This is a widget that can automatically monitor whether the child widget is exposed
When the child widget is found in the window viewport, it begin detecting
When stay time exceeds the exposure time condition (default is 0.5s) and the exposure area is greater than the visibility fraction condition (default 50%)
It will trigger the exposure callback and record the Key value in a queue (the default is to store up to 100 keys). Encounter the same key in the queue, no more exposure detection

install

Add this to your package's pubspec.yaml file

dependencies:
  exposure: ^1.0.2

use

ExposureDetector({
    key: Key('exposure'),  // Custom Key
    child: childWidget, //Child Widget
    exposure: callBack // Exposure Callback
});

Examples

Scroll List Exposure

Animate Exposure

Dialog Exposure

Configuration

• ExposureDetectorController.instance.setFilterList：Function Set key queue
  
• ExposureDetectorController.instance.exposureTime：int Set exposure time condition (ms)
  
• ExposureDetectorController.instance.exposureFraction：double Set visibility fraction condition
  
• ExposureDetectorController.instance.updateInterval：Duration Set delay detection time