TVSDK會以一般預期的順序傳送事件/通知。 您的播放器可以根據預期序列中的事件實作動作。
下列範例顯示包含播放事件之部分事件的順序。
當成功載入媒體資源透過 MediaPlayer.replaceCurrentResource
,事件的順序為:
MediaPlayerStatusChangeEvent.STATUS_CHANGED
具有狀態 MediaPlayerStatus.INITIALIZING
MediaPlayerItemEvent.ITEM_CREATED
MediaPlayerStatusChangeEvent.STATUS_CHANGED
具有狀態 MediaPlayerStatus.INITIALIZED
準備透過播放 MediaPlayer.prepareToPlay
,事件的順序為:
MediaPlayerStatusChangeEvent.STATUS_CHANGED
具有狀態 MediaPlayerStatus.PREPARING
TimelineEvent.TIMELINE_UPDATED
如果已插入廣告
MediaPlayerStatusChangeEvent.STATUS_CHANGED
具有狀態 MediaPlayerStatus.PREPARED
對於即時/線性串流,在播放視窗前進且其他機會解決時播放期間,事件的順序為:
MediaPlayerItemEvent.ITEM_UPDATED
TimelineEvent.TIMELINE_UPDATED
如果已插入廣告下列範例顯示事件的典型進度:
mediaPlayer.addEventListener(MediaPlayerItemEvent.ITEM_CREATED, onItemCreated);
public function onItemCreated(event:MediaPlayerItemEvent):void {
var item:MediaPlayerItem = event.item;
...
}
mediaPlayer.addEventListener(MediaPlayerItemEvent.ITEM_UPDATED, onItemUpdated);
public function onItemUpdated(event:MediaPlayerItemEvent):void {
var item:MediaPlayerItem = event.item;
...
}
mediaPlayer.addEventListener(MediaPlayerStatusChangeEvent.STATUS_CHANGED,
onStatusChanged);
public function onStatusChanged(event:MediaPlayerStatusChangeEvent):void {
switch(event.status){
case MediaPlayerStatus.INITIALIZING:
case MediaPlayerStatus.INITIALIZED:
...
}
...
}
mediaPlayer.addEventListener(TimeChangeEvent.TIME_CHANGED, onTimeChanged);
public function onTimeChanged(event:TimeChangeEvent):void {
var timeInMilliseconds:Number = event.time;
...
}