Flash/flex learning notes (6): Create a FLV Video Player Based on XML data sources

After a long time of hard work today, we finally developed a simple video player, which can be used to communicate with company leaders.

Steps:

1. Drag a "flvplayback" component to the stage in Flash cs4.

Note: flvplayback has basic FLV playback functions. You can simply set the attributes to play the video.

2. Load the XML Data Source

The XML data source format is as follows:

 
<? XML version = "1.0" encoding = "UTF-8"?> <DATA> <item FLV = "FLV address 1" photo = "thumbnail 1" url = "Click Path 1" name = "name 1"> </item> <item FLV = "FLV address 2" photo = "thumbnail 2" url = "Click Path 2" name = "name 2"> </item>... </data>
 

 

Core of loading XML by using ActionScriptCode:

VaR _ xml: XML; // declare an XML-type variable, used to receive data VaR _ urlreq: URLRequest = new URLRequest (); _ urlreq. url = "XML file address"; VaR _ Loader: urlloader = new urlloader (_ urlreq); // (asynchronous) Start loading xml_loader.addeventlistener (event. complete, loadcompleted); // configure the callback function after loading. // The processing function loadcompleted (E: Event): void {_ xml = XML (_ loader. data); For each (VAR item in _ xml. ITEM) {trace (item. @ FLV + "," + item. @ photo + "," + item. @ URL + "," + item. @ name}); // use @ in as to access the attributes of XML node elements }}
 

 

3. Bind The tilelist component with XML data

Tilelist is a bit similar to wrappanel in Silverlight. In "Flash/flex Study Notes (2): capture camera", the following list is the application of the tilelist component. The usage of tilelist is not repeated.

As for binding tilelist to XML, dataprovider is mainly used to complete

Key as3Source code:

Import FL. events. listevent; import FL. video. videoevent; import FL. video. videoprogressevent; lbldebug. visible = false; // disable debugging flv1.play (); // by default, the first VaR _ xml: XML; VaR _ urlreq: URLRequest = new URLRequest (); _ urlreq. url = "XML file address"; VaR _ Loader: urlloader = new urlloader (_ urlreq); _ loader. addeventlistener (event. complete, loadcompleted); VaR _ DP: dataprovider = new dataprovider (); VaR _ currentindex: uint = 0; function loadcompleted (E: Event ): void {_ xml = XML (_ loader. data); For each (VAR item in _ xml. ITEM) {_ DP. additem ({FLV: item. @ FLV, source: item. @ photo, URL: item. @ URL, name: item. @ name});} If (_ DP. length> 0) {playflv (_ currentindex); flv1.addeventlistener (videoevent. complete, playcompleted); flv1.addeventlistener (videoevent. buffering_state_entered, buffered); flv1.addeventlistener (videoevent. stopped_state_entered, stopentered); flv1.addeventlistener (videoevent. paused_state_entered, pauseentered); flv1.addeventlistener (videoevent. playing_state_entered, playingentered); flv1.addeventlistener (videoprogressevent. progress, progresshandler) ;}} lst1.dataprovider = _ DP; lst1.addeventlistener (listevent. item_click, clickbaby); // when you click baby, play the corresponding video function clickbaby (E: listevent) {_ currentindex = E. index; // trace (_ currentindex); playflv (_ currentindex);} // after playback is complete, insert a function playcompleted (E: videoevent) {trace ("playback completed: "+ E); playflv (_ currentindex + 1);} function buffered (E: videoevent) {/* trace (" buffering... "+ E); lbldebug. TEXT = "buffering... "; */flv1.playwhenenoughdownloaded ();} function stopentered (E: videoevent) {// trace (" stopped... "); // lbldebug. TEXT = "stopped... ";} function pauseentered (E: videoevent) {// trace (" paused... "); // lbldebug. TEXT = "paused... "; pause1.visible = true;} function playingentered (E: videoevent) {// trace (" playing... "); // lbldebug. TEXT = "playing... "; pause1.visible = false;} function progresshandler (E: videoprogressevent) {// trace (E); // flv1.playwhenenoughdownloaded (); // trace (" buffer time: "+ flv1.buffertime); // trace (" flv1.buffering = "+ flv1.buffering +", flv1.paused = "+ flv1.paused) if (flv1.buffering | flv1.paused) {// This is a problem, this will invalidate the user's click pause (no automatic pause for loading the buffer due to slow network speed is found yet) flv1.playwhenenoughdownloaded ();}} // play the video function playflv (flvindex: uint) {// trace ("flvindex =" + flvindex + ", _ currentindex =" + _ currentindex ); if (flvindex> = _ DP. length) {flvindex = 0;} var item: Object = _ DP. getitemat (flvindex); flv1.load (item. FLV); flv1.play (); pause1.visible = false; _ currentindex = flvindex; lst1.scrolltoindex (_ currentindex);} STOP ();

Online demonstration: