在Android中的WebView播放本地视频 [英] Playing local video in WebView on Android

问题描述

我要建一个的WebView的应用程序多数民众赞成应该播放视频，这是保存在本地。奇怪的是视频播放器不工作与本地的视频文件。它播放视频保存在服务器上，但。

I'm building an app with a WebView thats supposed to play a video, that's saved locally. Strangely the video player is not working with local video files. It does play videos saved on a server though.

本地文件（html和视频）保存在文件夹中资产/ html_test

The local files (html and video) are saved in a folder assets/html_test

下面是文件。

HTML

<div class="video-container">
  <p>Server</p>
  <video poster="video/star.png" controls>
    <source src="http://broken-links.com/tests/media/BigBuck.m4v" />
  </video>
</div>

<div class="video-container">
  <p>local</p>
  <video poster="video/star.png" controls>
    <source src="BigBuck.m4v" />
  </video>
</div>

的onCreate在活动

WebView browser = (WebView) findViewById(R.id.browser);

WebSettings webSettings = browser.getSettings();
webSettings.setJavaScriptEnabled(true);
webSettings.setPluginState(WebSettings.PluginState.ON_DEMAND);
webSettings.setAllowFileAccessFromFileURLs(true);

browser.setWebChromeClient(new WebChromeClient());

browser.loadUrl("file:///android_asset/html_test/video.html");

第一视频作品，第二个没有。我尝试了不同的值的源，他们都没有为我工作：

The first video works, the second one doesn't. I tried different values for the source, neither of them worked for me:

<source src="BigBuck.m4v" />
<source src="file:///android_asset/html_test/BigBuck.m4v" />

不知道这是否是相关的，但只要我preSS发挥，的logcat 拿出这样的：

01-07 12:19:18.073: E/MediaPlayer(32542): error (1, -2147483648)
01-07 12:19:18.073: E/MediaPlayer(32542): Error (1,-2147483648)

我不知道这个问题是在这里什么。任何帮助将是非常美联社preciated。

I have no clue what the problem is here. Any help would be much appreciated.

推荐答案

Slartibartfasts帮我解决这个问题。因为它只是一个评论，我会发布它自己。

Slartibartfasts helped me solve this. Since it's just a comment, I'll have to post it myself.

本质上，它是一个权限问题。 这是他张贴的链接。与 MODE_WORLD_READABLE 复制文件建议的方法是pcated德$ P $，请使用下面的链接中描述的方法，并保存在外部存储器中的文件

Essentially it's a permission problem. Here is the link he posted. The suggested method for copying files with MODE_WORLD_READABLE is deprecated, use the method described in the link below and save the files in the external storage

我不得不将文件复制到外部存储和访问视频文件存在。自的路径外部存储是几个版本机器人中的不同，我复制所有相关的HTML文件（包括所有的JS，图形和视频文件）。请参阅<一href="http://stackoverflow.com/questions/4447477/android-how-to-copy-files-in-assets-to-sdcard">copying文件，向下滚动的解答，如果您有子文件夹。

I had to copy the files to the external storage, and access the video file there. Since the path to the external storage is different within the several versions of android, I copied the all relevant HTML files (including all JS, graphics and video files). See copying files, scroll down for the answer if you have sub folders.

下面是我的复制方法：

private void copyAssets(String path)
{
    String[] files = null;

    try
    {
        files = getAssets().list(path);
    } catch (IOException e)
    {
        e.printStackTrace();
    }

    if (files.length == 0)
        copyFile(path);
    else
    {
        File dir = new File(getExternalFilesDir(null), path);

        if (!dir.exists())
            dir.mkdir();

        for (int i = 0; i < files.length; i++)
        {
            copyAssets(path + "/" + files[i]);
        }
    }
}

private void copyFile(String filename)
{
    InputStream in = null;

    File file;
    OutputStream out = null;

    try
    {
        in = getAssets().open(filename);
    } catch (IOException e)
    {
        Log.e(TAG, "ERROR WITH in = getAssets().open: " + filename);
        e.printStackTrace();
    }

    file = new File(getExternalFilesDir(null), filename);

    try
    {
        out = new FileOutputStream(file);
    } catch (FileNotFoundException e)
    {
        Log.e(TAG, "ERROR WITH out = new FileOutputStream(file);");
        e.printStackTrace();
    }

    byte[] data;

    try
    {
        data = new byte[in.available()];

        in.read(data);
        out.write(data);

        in.close();
        out.close();
    } catch (IOException e1)
    {
        e1.printStackTrace();
    }
}

在我的的onCreate 我称之为

copyAssets("matrix");

与基体是在我的资产的文件夹，多数民众赞成持有的所有文件和子文件夹。

with matrix being the folder in my assets thats holding all files and sub folders.

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