Android - 從擴展文件播放MP4視頻文件

Question

我已經按照測試應用程序擴展文件的所有步驟進行了操作。 我現在被困在哪里是如何播放該擴展文件中包含的視頻文件。

我已經成功地從Google Play下載了它，當我瀏覽文件管理器時，我可以在它應該位於的文件夾中看到它。

在過去的幾天里，我一直試圖弄清楚如何播放文件。 目前只有一個，以保持適當的測試尺寸。

我試圖解析URI並在視頻視圖中設置它，但是，它始終顯示無法播放視頻。

到目前為止，我還嘗試過這段代碼來訪問它（如文檔中所述，我已經用參數替換了參數）：

// Get a ZipResourceFile representing a merger of both the main and patch files
ZipResourceFile expansionFile = APKExpansionSupport.getAPKExpansionZipFile(appContext,
    mainVersion, patchVersion);

// Get an input stream for a known file inside the expansion file ZIPs
InputStream fileStream = expansionFile.getInputStream(pathToFileInsideZip);

我如何處理輸入流才能播放視頻？

Answer 1

供應商代碼

public class EHZipUriProvider extends APEZProvider {

@Override
public String getAuthority() {
    // TODO Auto-generated method stub
    return "your.package.name.Utility.EHZipUriProvider";
}

}

定制視頻播放器

public static final Uri CONTENT_URI = Uri
        .parse("content://your.package.name.Utility.EHZipUriProvider");

public static VideoView mview;

public static void playVideo(Context context, VideoView resource, String VIDEO_NAME) {
    position = 0;
    mview = resource;
    Uri video = Uri.parse((CONTENT_URI + "/" + VIDEO_NAME));
    mview.setVideoURI(video);
    mview.start();

    mview.setOnCompletionListener(new OnCompletionListener() {

        @Override
        public void onCompletion(MediaPlayer mp) {
            // TODO Auto-generated method stub
            mview = null;
        }
    });
}

打電話給活動

VideoPlayer.playVideo(context, vv, "rulesofenglish.mp4");

Answer 2

例如，我的應用程序包名稱是：

com.bluewindsolution.android.sampleapp

然后我的擴展文件應該是

main.1.com.bluewindsolution.android.sampleapp.obb

詳細信息，您可以在此處關注 ：

[main | patch]。<expansion-version>。<package-name> .obb

---

從擴展開始，您可以通過三種方式獲得它：

通過AssetFileDescriptor

// This one works with an image file and a media file.
// Get a ZipResourceFile representing a specific expansion file
// mainContext, version number of your main expansion, version number of your patch
ZipResourceFile expansionFile = APKExpansionSupport.getAPKExpansionZipFile(this, 1, 0);
AssetFileDescriptor afd_img1 = expansionFile.getAssetFileDescriptor("your_path/your_file.jpg");
AssetFileDescriptor afd_mpbg = expansionFile.getAssetFileDescriptor("your_path/your_file.mp3");

// To set image
ImageView imageView1 = (ImageView)findViewById(R.id.iv1);
imageView1.setImageBitmap(BitmapFactory.decodeFileDescriptor(afd_iv1.getFileDescriptor()));

// To set sound
try {
    mpbg.setDataSource(afd_mpbg.getFileDescriptor(), afd_mpbg.getStartOffset(), afd_mpbg.getDeclaredLength());
    mpbg.prepareAsync();
    mpbg.start();
} catch (IllegalStateException e) {
    Log.w("Error=====", "Failed to prepare media player", e);
}

---

通過InputStream：

// This one works with an image file and a media file.
// Get a ZipResourceFile representing a specific expansion file

ZipResourceFile expansionFile = new ZipResourceFile(filePathToMyZip);

// Get an input stream for a known file inside the expansion file ZIPs

InputStream fileStream = expansionFile.getInputStream(pathToFileInsideZip);

---

通過Uri

// This one can use in almost thing such as jpg, mp3, mp4, pdf, etc.

// You need to create a new class to override APEZProvider
public class ZipFileContentProvider extends APEZProvider {
    @Override
    public String getAuthority() {
        return "com.bluewindsolution.android.sampleapp";
    }
}

// You need to add <provider> in AndroidManifest.xml
<provider
 android:name="com.bluewindsolution.android.sampleapp.ZipFileContentProvider"
   android:authorities="com.bluewindsolution.android.sampleapp"
      android:exported="false"
      android:multiprocess="true"
    >
    <meta-data android:name="mainVersion"
              android:value="1"></meta-data>
</provider>

// After that, you can use it any time by this code:
String filename2 = "image/i_commu_a_1_1_1_1.jpg"; // suppose you store put your file in directory in .obb
String uriString2 = "content://com.bluewindsolution.android.sampleapp" +  File.separator + filename2;
Uri uri2 = Uri.parse(uriString2);
imageView2.setImageURI(uri2);

// Filename inside my expansion file
String filename = "video/v_do_1_1_1.mp4"; // Suppose you store put your file in directory in .obb
String uriString = "content://com.bw.sample_extension_download_main" +  File.separator + filename;
Uri uri = Uri.parse(uriString);

v1 = (VideoView)findViewById(R.id.videoView1);
v1.setVideoURI(uri);
v1.start();

Answer 3

使用提供商（對我來說是最好的解決方案）！ 我測試了它，它完美無缺。

請參閱Android：使用APEZ從.obb讀取媒體文件 。