使用JS实现Android视频播放，分享Rexsee的原生VideoPlayer源码

Question

在Android上实现VideoPlayer并不是非常困难，可以直接通过MediaPlayer类，也可以用VideoView进行封装。或者就是利用Rexsee的PAI，直接使用JS去实现。
举例：
1. 函数：boolean start(String url,String style,boolean looping)
2. 说明：播放本地或网络视频，如果是网络视频，在缓冲过程中会触发onVideoBufferingUpdated()事件，读取到视频信息时会触发onVideoPlayerInfo()事件，播放完毕会触发onVideoPlayCompleted事件，视频尺寸改变时会触发onVideoSizeChanged事件。
3. 参数：url：要播放的本地视频（"file://xxxxx"）或网络视频（"http://xxxxxx"）的路径。style：播放器对话框的样式。looping：是否循环播放。
4. 示例：
rexseeDownload.download('http://www.rexsee.com/images/test.wmv');
function onDownloadFinished(url,path){
rexseeVideoPlayer.start(path,'window-dim-amount:0;window-moveable:true;window-modeless:true;window-cancelable:false;width:300;height:200;border-width:0px;',true);
}

rexseeVideoPlayer.start('http://www.rexsee.com/images/test.wmv','window-dim-amount:0;window-moveable:true;window-modeless:true;window-cancelable:false;width:300;height:200;border-width:0px;',false);

rexseeVideoPlayer.pause();

……

如下是VideoPlayer的原生源码，还可以去Rexsee的社区查看它的VideoView等源码。不过现在还不是特别方便可以去下载：http://www.rexsee.com/

 

/* 
* Copyright (C) 2011 The Rexsee Open Source Project 
* 
* Licensed under the Rexsee License, Version 1.0 (the "License"); 
* you may not use this file except in compliance with the License. 
* You may obtain a copy of the License at 
* 
*      http://www.rexsee.com/CN/legal/license.html 
* 
* Unless required by applicable law or agreed to in writing, software 
* distributed under the License is distributed on an "AS IS" BASIS, 
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
* See the License for the specific language governing permissions and 
* limitations under the License. 
*/ 
 
package rexsee.multimedia;  
 
import rexsee.core.browser.JavascriptInterface;  
import rexsee.core.browser.RexseeBrowser;  
import android.content.Context;  
import android.media.AudioManager;  
 
public class RexseeVideoPlayer implements JavascriptInterface {  
 
       private static final String INTERFACE_NAME = "VideoPlayer";  
       @Override  
       public String getInterfaceName() {  
               return mBrowser.application.resources.prefix + INTERFACE_NAME;  
       }  
       @Override  
       public JavascriptInterface getInheritInterface(RexseeBrowser childBrowser) {  
               return this;  
       }  
       @Override  
       public JavascriptInterface getNewInterface(RexseeBrowser childBrowser) {  
               return new RexseeVideoPlayer(childBrowser);  
       }  
 
       private final RexseeBrowser mBrowser;  
       private final Context mContext;  
       private VideoDialog mVideoDialog = null;  
 
       public RexseeVideoPlayer(RexseeBrowser browser) {  
               mBrowser = browser;  
               mContext = browser.getContext();  
       }  
 
       private boolean checkStatus() {  
               if (mVideoDialog == null || mVideoDialog.videoView.mediaPlayer == null) {  
                       mBrowser.exception(getInterfaceName(), "The video player is not started, please call start().");  
                       return false;  
               } else {  
                       return true;  
               }  
       }  
 
       //JavaScript Interface  
 
       public boolean start(String url, String style, boolean looping) {  
               stop();  
               url = mBrowser.urlListeners.getAbsoluteUrl(url);  
               mVideoDialog = new VideoDialog(mBrowser, url, style, looping);  
               mVideoDialog.start();  
               return true;  
       }  
       public boolean stop() {  
               if (mVideoDialog == null) return true;  
               try {  
                       if (mVideoDialog.videoView.mediaPlayer != null) {  
                               mVideoDialog.videoView.mediaPlayer.stop();  
                               mVideoDialog.videoView.mediaPlayer.release();  
                               mVideoDialog.videoView.mediaPlayer = null;  
                       }  
                       mVideoDialog.dismiss();  
                       mVideoDialog = null;  
                       return true;  
               } catch (Exception e) {  
                       mBrowser.exception(getInterfaceName(), e);  
                       return false;  
               }  
       }  
       public boolean pause() {  
               if (!checkStatus()) return false;  
               if (!mVideoDialog.videoView.mediaPlayer.isPlaying()) return true;  
               try {  
                       mVideoDialog.videoView.mediaPlayer.pause();  
                       return true;  
               } catch (Exception e) {  
                       mBrowser.exception(getInterfaceName(), e);  
                       return false;  
               }  
       }  
       public boolean resume() {  
               if (!checkStatus()) return false;  
               try {  
                       mVideoDialog.videoView.mediaPlayer.start();  
                       return true;  
               } catch (Exception e) {  
                       mBrowser.exception(getInterfaceName(), e);  
                       return false;  
               }  
       }  
       public boolean seekTo(int milliseconds) {  
               if (!checkStatus()) return false;  
               try {  
                       mVideoDialog.videoView.mediaPlayer.seekTo(milliseconds);  
                       return true;  
               } catch (Exception e) {  
                       mBrowser.exception(getInterfaceName(), e);  
                       return false;  
               }  
       }  
 
       public int getDuration() {  
               if (!checkStatus()) return -1;  
               try {  
                       return mVideoDialog.videoView.mediaPlayer.getDuration();  
               } catch (Exception e) {  
                       mBrowser.exception(getInterfaceName(), e);  
                       return -1;  
               }  
       }  
       public int getCurrentPosition() {  
               if (!checkStatus()) return -1;  
               try {  
                       return mVideoDialog.videoView.mediaPlayer.getCurrentPosition();  
               } catch (Exception e) {  
                       mBrowser.exception(getInterfaceName(), e);  
                       return -1;  
               }  
       }  
       public int getVideoWidth() {  
               if (!checkStatus()) return -1;  
               try {  
                       return mVideoDialog.videoView.mediaPlayer.getVideoWidth();  
               } catch (Exception e) {  
                       mBrowser.exception(getInterfaceName(), e);  
                       return -1;  
               }  
       }  
       public int getVideoHeight() {  
               if (!checkStatus()) return -1;  
               try {  
                       return mVideoDialog.videoView.mediaPlayer.getVideoHeight();  
               } catch (Exception e) {  
                       mBrowser.exception(getInterfaceName(), e);  
                       return -1;  
               }  
       }  
       public boolean isPlaying() {  
               if (!checkStatus()) return false;  
               return mVideoDialog.videoView.mediaPlayer.isPlaying();  
       }  
       public boolean isLooping() {  
               if (!checkStatus()) return false;  
               return mVideoDialog.videoView.mediaPlayer.isLooping();  
       }  
 
       public boolean setVolume(float volume) {  
               if (!checkStatus()) return false;  
               if (volume < 0 || volume > 1) {  
                       mBrowser.exception(getInterfaceName(), "The volumn must between 0 and 1.");  
                       return false;  
               }  
               AudioManager mAudioManager = (AudioManager) mContext.getSystemService(Context.AUDIO_SERVICE);  
               mAudioManager.setStreamVolume(AudioManager.STREAM_MUSIC, Math.round((mAudioManager.getStreamMaxVolume(AudioManager.STREAM_MUSIC) * volume)), 0);  
               return true;  
       }  
 }

 

Answer 1

有高手评价一下不？

Answer 2

lz是仔细研究过Rexsee的么？能留个QQ不？