相关疑难解决方法(0)

我正在关注所有官方扩展文件指南,但我找不到它.我无法访问我需要的包含的obb文件.

我需要6个音频文件(80Mb),我在zip文件中"存储"(未压缩)并重命名为"main.2001.test.expansion.proj.obb"并存储在'/ mnt/sdcard/Android/obb/test中.expansion.proj /"

我会尝试访问这些文件

String mainFileName = Helpers.getExpansionAPKFileName(this,true,2001);
if(!Helpers.doesFileExist(this, mainFileName, 27959282L, false))
{
    //download
} else {
    Log.d("test_file","file exist");
}

ZipResourceFile expansionFile = APKExpansionSupport.getAPKExpansionZipFile(this,2001,2001);
if(expansionFile!=null)
{
    ZipEntryRO[] ziro = expansionFile.getAllEntries();
    for (ZipEntryRO entry : ziro) {
        Log.d("test_files_zip", "fileZip filename: "+entry.getZipFileName());
        try{
            AssetFileDescriptor ro = entry.getAssetFileDescriptor();
            Log.d("test_files_zip", "--fileZip getfiledescriptor.tostring: "+ro.getFileDescriptor().toString());
            Log.d("test_files_zip", "--fileZip createinputstring.tostring: "+ro.createInputStream().toString());

            AssetFileDescriptor assetFileDescriptor = expansionFile.getAssetFileDescriptor(entry.getZipFileName()+"/audio02.mp3");
            if(assetFileDescriptor!=null) {
                Log.d("test_files_mp3", "length: "+assetFileDescriptor.getLength()); //checking it exists
            }
        }catch (IOException e){ Log.e("test_exp","IoExcp: "+e.getMessage()); }
    }
}

In - > assetFileDescriptor = …

我已经实施了APK扩展文件下载服务,全部来自http://developer.android.com/google/play/expansion-files.html

我可以下载APK扩展文件,我可以使用下面的代码看到该文件

try {
        ZipResourceFile expansionFile = APKExpansionSupport
                .getAPKExpansionZipFile(this, 3, 0);

        ZipEntryRO[] zip = expansionFile.getAllEntries();
        Log.e("", "" + zip[0].mFile.getAbsolutePath());
        Log.e("", "" + zip[0].mFileName);
        Log.e("", "" + zip[0].mZipFileName);
        Log.e("", "" + zip[0].mCompressedLength);

        AssetFileDescriptor fd = expansionFile
                .getAssetFileDescriptor(zip[0].mFileName);

        if (fd != null && fd.getFileDescriptor() != null) {
            MediaPlayer mp = new MediaPlayer();
            mp.setDataSource(fd.getFileDescriptor());
            mp.start();
        } else {
            Log.e("", "fd or fd.getFileDescriptor() is null");
        }

    } catch (IOException e) {
        e.printStackTrace();
    }

我的obb有文件test.mp4和我的代码Log.e("", "" + zip[0].mFileName);打印test.mp4.

我的 …