问题加载web视图中的FLV视频 [英] Problem to load flv video in webview
问题描述
我想负荷 FLV视频中的WebView。
I want to load .flv video in webview.
我已经帮助来自此链接，但问题是我又不是能够在仿真器观看视频。
I have taken help from this link, but the problem is I'm not able to view video in emulator.
这是我的code：
package com.FlvTester;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import android.app.Activity;
import android.os.Bundle;
import android.webkit.WebView;
import android.widget.FrameLayout;
public class FlvTester extends Activity {
WebView webView;
String htmlPre = "<!DOCTYPE html><html lang=\"en\"><head><meta charset=\"utf-8\"></head><body style='margin:0; pading:0; background-color: black;'>";
String htmlCode =
" <embed style='width:100%; height:100%' src='http://www.platipus.nl/flvplayer/download/1.0/FLVPlayer.swf?fullscreen=true&video=@VIDEO@' " +
" autoplay='true' " +
" quality='high' bgcolor='#000000' " +
" name='VideoPlayer' align='middle'" + // width='640' height='480'
" allowScriptAccess='*' allowFullScreen='true'" +
" type='application/x-shockwave-flash' " +
" pluginspage='http://www.macromedia.com/go/getflashplayer' />" +
"";
String htmlPost = "</body></html>";
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
webView = (WebView)findViewById(R.id.webview);
webView.getSettings().setJavaScriptEnabled(true);
webView.getSettings().setAllowFileAccess(true);
webView.getSettings().setPluginsEnabled(true);
htmlCode = htmlCode.replaceAll("@VIDEO@", "file:///android_asset/expression_sad.flv");
webView.loadDataWithBaseURL("file:///android_asset/expression_sad.flv", htmlPre+htmlCode+htmlPost, "text/html", "UTF-8", null);
}
@Override
protected void onPause(){
super.onPause();
callHiddenWebViewMethod("onPause");
webView.pauseTimers();
if(isFinishing()){
webView.loadUrl("about:blank");
setContentView(new FrameLayout(this));
}
}
@Override
protected void onResume(){
super.onResume();
callHiddenWebViewMethod("onResume");
webView.resumeTimers();
}
private void callHiddenWebViewMethod(String name){
// credits: http://stackoverflow.com/questions/3431351/how-do-i-pause-flash- content-in-an-android-webview-when-my-activity-isnt-visible
if( webView != null ){
try {
Method method = WebView.class.getMethod(name);
method.invoke(webView);
} catch (NoSuchMethodException e) {
//Lo.g("No such method: " + name + e);
} catch (IllegalAccessException e) {
//Lo.g("Illegal Access: " + name + e);
} catch (InvocationTargetException e) {
//Lo.g("Invocation Target Exception: " + name + e);
}
}
}
}
我在日志中的猫得到这个错误
07-06 12:00:48.567: WARN/dalvikvm(381): threadid=1: thread exiting with uncaught exception (group=0x4001d800)
07-06 12:00:48.597: ERROR/AndroidRuntime(381): FATAL EXCEPTION: main
07-06 12:00:48.597: ERROR/AndroidRuntime(381): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.FlvTester/com.FlvTester.FlvTester}: java.lang.ClassCastException: android.widget.VideoView
07-06 12:00:48.597: ERROR/AndroidRuntime(381): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2663)
07-06 12:00:48.597: ERROR/AndroidRuntime(381): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
07-06 12:00:48.597: ERROR/AndroidRuntime(381): at android.app.ActivityThread.access$2300(ActivityThread.java:125)
07-06 12:00:48.597: ERROR/AndroidRuntime(381): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
07-06 12:00:48.597: ERROR/AndroidRuntime(381): at android.os.Handler.dispatchMessage(Handler.java:99)
07-06 12:00:48.597: ERROR/AndroidRuntime(381): at android.os.Looper.loop(Looper.java:123)
07-06 12:00:48.597: ERROR/AndroidRuntime(381): at android.app.ActivityThread.main(ActivityThread.java:4627)
07-06 12:00:48.597: ERROR/AndroidRuntime(381): at java.lang.reflect.Method.invokeNative(Native Method)
07-06 12:00:48.597: ERROR/AndroidRuntime(381): at java.lang.reflect.Method.invoke(Method.java:521)
07-06 12:00:48.597: ERROR/AndroidRuntime(381): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
07-06 12:00:48.597: ERROR/AndroidRuntime(381): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
07-06 12:00:48.597: ERROR/AndroidRuntime(381): at dalvik.system.NativeStart.main(Native Method)
07-06 12:00:48.597: ERROR/AndroidRuntime(381): Caused by: java.lang.ClassCastException: android.widget.VideoView
07-06 12:00:48.597: ERROR/AndroidRuntime(381): at com.FlvTester.FlvTester.onCreate(FlvTester.java:31)
07-06 12:00:48.597: ERROR/AndroidRuntime(381): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
07-06 12:00:48.597: ERROR/AndroidRuntime(381): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
07-06 12:00:48.597: ERROR/AndroidRuntime(381): ... 11 more
的main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout android:layout_width="fill_parent" android:layout_height="fill_parent" xmlns:android="http://schemas.android.com/apk/res/android">
<WebView android:layout_width="match_parent" android:id="@+id/webview" android:layout_height="match_parent"></WebView>
</LinearLayout>
更新
推荐答案
您没有明确说明你的Android版本，但我可以证实，Flash插件做负载和电影播放器确实intilaize与旋涡状形状的图形。我可以搞它变成全屏模式。我也能够播放网络视频，但不能从应用程序的资产文件夹，但是我有一种解决方法。
You don't state clearly what your Android version, however I can confirm that the flash plugin does load and the movie player does intilaize with the swirly shape graphic. I can engage it into fullscreen mode. I am also able to play online video but not from the application's assets folder, however I do have a workaround.
以下permissinos需要在你的manifest.xml：
The following permissinos are required in your manifest.xml:
<uses-permission android:name="android.permission.INTERNET"></uses-permission> <!-- where required -->
<uses-permission android:name="android.permission.WAKE_LOCK"></uses-permission>
有趣的是，我发现我只能从资产的文件夹中运行的SWF播放器时的HTML是静态加载也就是当我创建了一个HTML文件和文件夹使用使用loadURL加载直接从资产（）。似乎有东西挡住访问应用程序目录时，HTML数据加载使用loadDataBaseUrl方法。
Interestingly I discovered I was only able to run the SWF player from the assets folder when the html was statically loaded i.e when I created an html file and loaded that directly from the assets folder using loadUrl(). There seems to be something blocking access to the application directory when html data is loaded using the loadDataBaseUrl method.
要成功地获得视频从本地设备上播放静态HTML文件和视频必须处于同一位置上的SD卡。我唯一的结论是，资产文件夹是关闭的限制，以嵌入式插件出于安全原因。
To succesfully get video to play from the local device a static html file and the video must be co-located on the sdcard. My only conclusion is that the assets folder is off limits to the embedded plugin for security reasons.
if (!Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)){
Log.d(TAG, "No SDCARD");
} else {
webView.loadUrl("file://"+Environment.getExternalStorageDirectory()+"/FLVplayer/index.html");
}
这里是HTML文件
And here is the html file
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
</head>
<body style="margin:0; pading:0; background-color: black;">
<embed
style="width:100%; height:100%"
src="./FLVPlayer.swf?fullscreen=true&video=./expression_sad.flv"
autoplay="true"
quality="high"
bgcolor="#000000"
name="VideoPlayer"
align="middle"
allowScriptAccess="*"
allowFullScreen="true"
type="application/x-shockwave-flash"
pluginspage="http://www.macromedia.com/go/getflashplayer">
</embed>
</body>
</html>
这是一个100％有效的解决方案，但你必须要求使用loadURL到dynaamically替换视频文件名之前写你的HTML文件到SD卡。此外，您应该复制从你的资产视频文件夹插入SD卡相同的路径（你可以从我的exaple看到我创建了一个名为FLVplayer文件夹。
This is a 100% working solution but you would have to write your html file to the sdcard before calling loadUrl to dynaamically replace the video file name. In addition you should copy the video from your assets folder into the same path on the sdcard (as you can see from my exaple I created a folder called FLVplayer.
在三星Galaxy Tab进行测试运行升级Froyo（2.2）
Test performed on Samsung Galaxy Tab running Froyo(2.2)
更新的
UPDATE
我包括已通过测试，工作一个完整的活动。这预计，Flash播放器，FLV文件和index.html文件的副本放置一个名为FLVplayer在你的SD卡的根目录下，你可以在使用文件资源管理器复制文件夹中。您可以编辑各种实用功能来修改行为，将文件从assetes文件夹复制
I am including a complete activity that has been tested and working. This expects a copy of the Flash player, the FLV file and the index.html file to be placed in a folder called "FLVplayer" on the root of your sdcard which you can copy across using the file explorer. You can edit the various utility functions to modify the behaviour to copy the files from your assetes folder
package com.FLVplayer;
import java.io.File;
import java.io.IOException;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import android.app.Activity;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.util.Log;
import android.webkit.WebView;
import android.widget.FrameLayout;
public class FLVplayerActivity extends Activity {
private static final String TAG="FLVplayer";
private static WebView webView;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
webView = (WebView)findViewById(R.id.webview);
//WebView webview = new WebView(this);
//setContentView(webview);
webView.getSettings().setJavaScriptEnabled(true);
webView.getSettings().setAllowFileAccess(true);
webView.getSettings().setPluginsEnabled(true);
if (!Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)){
Log.d(TAG, "No SDCARD");
} else {
//prepare the directory
File flvDirectory = new File(Environment.getExternalStorageDirectory(),"FLVplayer");
if(!flvDirectory.exists())
try {
flvDirectory.createNewFile();
} catch (IOException e) {
e.printStackTrace();
}
//specify the html file name to use
File flvHtml = new File(flvDirectory,"index.html");
//copy what you need
copySwfAsset(flvDirectory, "FLVPlayer.swf");
copyFlvAsset(flvDirectory, "20051210-w50s.flv");
//render the html
createVideoHtml(flvHtml, "20051210-w50s.flv");
//load the content into the webview
webView.loadUrl(Uri.fromFile(flvHtml).toString());
//sit back, watch FLV and eat popcorn
}
}
private void createVideoHtml(File htmlFile, String htmlFileName)
{
//TODO render your own html file to sdcard
}
private void copySwfAsset(File flvDirectory, String flashFileName)
{
//TODO copy your own SWF video player file from assets
}
private void copyFlvAsset(File flvDirectory, String videoFileName)
{
//TODO copy your oown FLV file from asset folder
}
@Override
protected void onPause(){
super.onPause();
callHiddenWebViewMethod("onPause");
webView.pauseTimers();
if(isFinishing()){
webView.loadUrl("about:blank");
setContentView(new FrameLayout(this));
}
}
@Override
protected void onResume(){
super.onResume();
callHiddenWebViewMethod("onResume");
webView.resumeTimers();
}
private void callHiddenWebViewMethod(String name){
// credits: http://stackoverflow.com/questions/3431351/how-do-i-pause-flash- content-in-an-android-webview-when-my-activity-isnt-visible
if( webView != null ){
try {
Method method = WebView.class.getMethod(name);
method.invoke(webView);
} catch (NoSuchMethodException e) {
//Lo.g("No such method: " + name + e);
} catch (IllegalAccessException e) {
//Lo.g("Illegal Access: " + name + e);
} catch (InvocationTargetException e) {
//Lo.g("Invocation Target Exception: " + name + e);
}
}
}
}
ADENDUM
我相信这可能是一种通过截获的各种文件的网址，直接从资产返回数据绕过安全问题的文件夹使用<一个href="http://developer.android.com/reference/android/webkit/WebViewClient.html#shouldInterceptRequest%28android.webkit.WebView,%20java.lang.String%29">WebViewClient.shouldInterceptRequest()但是这需要的API 11，从而不适合作为通用的解决方案。
I believe there may be a way to bypass the security issues by intercepting the URL of the various files and returning the data directly from the assets folder using WebViewClient.shouldInterceptRequest() but that requires API 11 so not suitable as a generic solution.
这篇关于问题加载web视图中的FLV视频的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
