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我正在使用 hardware_buttons: ^1.0.0. 但它只检测到您按下按钮时,而不是当您释放它时。

StreamSubscription _volumeButtonSubscription;

init{
...
_volumeButtonSubscription = volumeButtonEvents.listen((VolumeButtonEvent event) {
      if(event.toString().contains("VolumeButtonEvent.VOLUME_UP")){
        //this part is when the user press volume up
      }
    });
}
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