flex 个人总结_flex camera.getcamera();报错-优快云博客

本文链接：https://blog.youkuaiyun.com/belibei/article/details/7396456

-- FLEX判断客户端是否有摄像头

Camera.getCamera() == null
Camera.names.length == 0

/* 关闭摄像头 */

//如果 getCamera() 返回 null，则表明摄像头正由另一个应用程序使用，或者系统上没有安装摄像头。
camera = Camera.getCamera(null);
camera = null;
//正在捕获视频数据的 Camera 对象。若要切断与该 Video 对象的连接，请传递 null
video.attachCamera(null);

-- flex 摄像头操作

camera = Camera.getCamera();
//将摄像头的捕获模式设置为最符合指定要求的本机模式.
camera.setMode(240,180,15);
//指定进行完整传输而不由视频压缩算法进行插值处理的视频帧（称为关键帧）。
camera.setKeyFrameInterval(60);

//设置每秒的最大带宽或当前输出视频输入信号所需的画面质量
camera.setQuality(144,85);

Video video = new Video(camera.width*2, camera.height*2);
video.attachCamera(camera);

-- 关闭摄像头：
camera = Camera.getCamera(null);
camera = null;
video.attachCamera(null);

-- 视频播放
【VideoDisplay】
video.attachNetStream(netStream);
vd_show.addChild(video);
netStream.play("Oracle.flv");

<s:VideoDisplay id="vd_show" x="0" y="29" width="457" height="462"/>
【VideoPlaye】

private var rtmpURL:String ="rtmp://localhost/MeetingServer";//red5 服务器访问的网址
var filePath:String=rtmpURL+"/"+this.urlFile;
this.vp.source=filePath;

<s:VideoPlayer x="0" y="0" width="{this.width}" height="{this.height}" id="vp"/>

-- 自动弹出框
   protected function application1_creationCompleteHandler(event:FlexEvent):void
   {
    alrtTimer = new Timer(5000,1);
    alrtTimer.addEventListener(TimerEvent.TIMER_COMPLETE,removeAlert);
   }

   private function showAlert():void{
    popUpAlert = Alert.show("这是一个自动5秒关闭提示框！","Self closing Alert",Alert.OK|Alert.NONMODAL,this,popUpAlertHandle);
    popUpAlert.height=250;
    popUpAlert.width=250;
    alrtTimer.reset();
    alrtTimer.start();
   }

-- 获得屏幕的分辨率

var x:Number=Capabilities.screenResolutionX;
var y:Number=Capabilities.screenResolutionY;
Alert.show("x="+x+"y="+y);

第二种方法
Alert.show(stage.fullScreenWidth+"=="+stage.fullScreenHeight);

-- 获得stage（工作区）的宽、高

Alert.show(stage.stageWidth+"=="+stage.stageHeight);

-- 读取xml文件
private function readxml2():void

{

var urlrequest:URLRequest=new URLRequest("file/stu.xml");

var urlloader:URLLoader=new URLLoader(urlrequest);

urlloader.addEventListener(Event.COMPLETE, completehandler);

}

private function completehandler(event:Event):void

{

var xml:XML=new XML(event.target.data);

// var arr:Array=new Array(xml);

this.dg.dataProvider=xml.children();

this.tree.dataProvider=xml;

this.cb.dataProvider=xml.children();

// this.hlist.dataProvider=xml.children();

}

//flex 获得系统路径

var add:String=ExternalInterface.call("window.location.href.toString",1);
Alert.show(add);

//背景颜色不断变化

private function changeBG():void{
var mytime:Timer=new Timer(2000);
mytime.addEventListener(TimerEvent.TIMER,changHandle);
mytime.start();

}

private function changHandle(e:TimerEvent):void{
this.setStyle("backgroundColor",Math.random()* 0xffffff);

}

//获得键盘按下的键的值

public function getCode():void

{
btn.addEventListener(KeyboardEvent.KEY_DOWN, keyHandle);
}

function keyHandle(event:KeyboardEvent):void

{
Alert.show("你按下了:" + String.fromCharCode(event.charCode));
}

//动态加载不同界面

import commont.Two;

import commont.One;

var t:Two=new Two();

var o:One=new One();

private function showOne():void{

tw.removeAllChildren();

tw.addChild(o);

}

private function showTwo():void{

tw.removeAllChildren();

tw.addChild(t);

}

//flex 绑定图片

[Bindable]
[Embed(source="img/1.jpg")]
public var phone1:Class;

//日期中文标题

<mx:DateChooser id="dtchoose" x="219" y="83" dayNames="[日,一,二,三,四,五,六]" monthNames="[一月,二月,三月,四月,五月,六月,七月,八月,九月,十月,十一月,十二月]" change="disDate()" minYear="2007"/>

//选择日期 dateChoose

function disDate():void{
txtDate.text=fm.format(dtchoose.selectedDate.toLocaleDateString());
}

//flex 中添加html标记

<mx:TextArea id="text" creationComplete="init()" width="248" height="59">
<mx:htmlText>
<![CDATA[
<input type='file'/>
<a href="http://www.baidu.com/">你哈!!!</a>
]]>
</mx:htmlText>
</mx:TextArea>

//flex 带下划线的链接

this.lblLink.htmlText="<a href='http://www.google.com/' target='_blank'>新闻</a>";
<mx:Label x="524" y="393" text="Hellollll" id="lblLink" rollOver="focusManager.deactivate()" color="blue" opaqueBackground="#ffffff"
rollOut="focusManager.activate()" styleName="Label"
creationComplete="link()"/>
.Label{text-roll-over-color:red; text-decoration:underline; background-color:green; font-size:12px; text-selected-color:red;}

//flex 转向 URL

Var url:URLRequest=new URLRequest(“http://www.google.cn/”);
navigateToURL(url,”_self”);//在本页打开
navigateToURL(url,”_blank”);//在新的一页打开

//弹出对话框
---------非模式打开---------

PopUpManager.createPopUp(this,类（界面）的名称);

---------模式打开---------

var ep:Main=new Main ();

PopUpManager.addPopUp(ep,this,true);//界面，打开窗口父类，是否模式

PopUpManager.centerPopUp(ep);//在父类窗口居中

//-----Alert的用法

public function test():void

{
var glow:GlowFilter=new GlowFilter();
glow.color=StyleManager.getColorName("blue");//边框颜色
glow.strength=5;
glow.alpha=0.8;
var alert:Alert=Alert.show("是否选择","提示",Alert.YES|Alert.NO,this,alertHandle);
alert.filters=[glow];

}

private function alertHandle(event:CloseEvent):void{

if(event.detail==Alert.YES){
lbl.text="是";
}else{
lbl.text="否";

}

<mx:Button x="62" y="80" label="Button" click="test()"/>
<mx:Label x="62" y="37" text="Label" width="65" id="lbl"/>

//flex Combobox添加 –请选择-

private function loadCB(){

var arr:Array=new Array("-请选择-");

for(var i:int=1;i<10;i++){

arr[i]=i;

}

this.cb.dataProvider=arr;

}

//combobox 选择的值和下标

private function selected():void{

Alert.show(cb.selectedItem.toString()+"下标:"+cb.selectedIndex);

}

<mx:ComboBox x="194" y="80" id="cb" creationComplete="loadCB()" change="selected()">

//鼠标移动变大，Button加图片，变手型

<mx:Button x="72" y="80" label="Button" click="test()" mouseMove="changBig()" mouseOut="changSmall()" id="btn" height="52" icon="@Embed(source='img/3.jpg')"
labelPlacement="bottom" width="67" useHandCursor="true" buttonMode="true"/>

private function changBig():void{

this.btn.scaleX=1.5;

this.btn.scaleY=1.5

}

private function changSmall():void{

this.btn.scaleX=1;

this.btn.scaleY=1;

}

//写入共享数据

share=SharedObject.getLocal("username");
share.data.userName=txtUser.text;
share.flush();

//读取共享数据

var share:SharedObject=SharedObject.getLocal("username");
Alert.show(share.data.userName);

//检查使用的操作系统

private function checkOS():void{
var os:String=Capabilities.os;
tt.text="你的操作系统是:--"+os;

}

//检查所使用的浏览器

private function checkPlay():void{
var play:String=Capabilities.playerType;
Alert.show(play);

if(play=="ActiveX"){

tt.text="你的浏览器是--IE";

}else if(play=="PlugIn"){

tt.text="你的浏览器是--Mozilla-Firefox";

}else{

tt.text="你的浏览器是--其他";

}

//检查player的版本和使用的语言

private function other():void{

var v:String=Capabilities.version;

var l:String=Capabilities.language;

tt.text="你的flayer版本号：--"+v+

"/r/n你的语言是：--"+l;

}

//改变鼠标样式
[Bindable]
[Embed(source="img/157.jpg")]
public var cur:Class;
private function initCursor(event:Event){
CursorManager.setCursor(cur);
}

//设置AdvancedDataGrid的表头竖线为空
headerSortSeparatorSkin="mx.skins.ProgrammaticSkin"

//获得鼠标坐标
var cx:Number=CursorManager.currentCursorXOffset;
var cy:Number=CursorManager.currentCursorYOffset;
var id:int=CursorManager.currentCursorID;
Alert.show("x:="+cx+"y:="+y+"id="+id);