我只是想開始我的網絡攝像頭來顯示視頻,爲此我編寫了這段代碼,但它不工作。任何想法爲什麼它不能工作?我可能會犯什麼錯誤?將相機與Flash Builder 4.6相連
請這裏是代碼,
<?xml version="1.0" encoding="utf-8"?>
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx" minWidth="955" minHeight="600">
<fx:Script>
<![CDATA[
import mx.events.FlexEvent;
import mx.controls.Alert;
protected function video_d_creationCompleteHandler(event:FlexEvent):void
{
// TODO Auto-generated method stub
var camera:Camera = Camera.getCamera();
if (camera) {
video_d.videoObject.attachCamera(camera);
} else {
Alert.show("You don't seem to have a camera.");
}
}
]]>
</fx:Script>
<fx:Declarations>
<!-- Place non-visual elements (e.g., services, value objects) here -->
</fx:Declarations>
<s:VideoDisplay x="15" y="23" id="video_d" creationComplete="video_d_creationCompleteHandler(event)" />
</s:Application>
相反,我看到彈出一個錯誤:
類型錯誤:錯誤#1009:無法訪問空對象引用的屬性或方法。 (C:\ Users \ Malik \ Adobe Flash Builder 4.6 \)下的 在vv/video_d_creationCompleteHandler()[C:\ Users \ Malik \ Adobe Flash Builder 4.6 \ vv \ src \ vv.mxml:15] 在flash.events::EventDispatcher/dispatchEventFunction() at flash.events::EventDispatcher/dispatchEvent() at mx.core :: UIComponent/dispatchEvent()[E:\ vm \ src \ vv.mxml:26] at flash.events::EventDispatcher/dispatchEventFunction dev \ 4.y \ frameworks \ projects \ framework \ src \ mx \ core \ UIComponent.as:13152] at mx.core :: UIComponent/set initialized()[E:\ dev \ 4.y \ frameworks \ projects \ framework \ src \ mx \ core \ UIComponent.as:1818] at mx.managers :: LayoutManager/doPhasedInstantiation()[E:\ dev \ 4.y \ frameworks \ projects \ framework \ src \ mx \ managers \ LayoutManager .as:842] at mx.managers :: LayoutManager/doPhasedInstantiationCallback()[E:\ dev \ 4.y \ fr ameworks \ projects \ framework \ src \ mx \ managers \ LayoutManager.as:1180]
等待您的答案,非常感謝。 謝謝 Bilal艾哈邁德
謝謝!我沒有嘗試過你的代碼,但鏈接是有幫助的。 –
較短的解決方案:http://stackoverflow.com/a/37363951/900408 – davee44