在我的应用程序中,我在Android-> obb-> packagename-> main.1.packagename.obb下载了扩展文件。 有人可以向我解释,即使使用示例代码如何从中提取我的文件?
我尝试将APK Expansion Zip Library用作:
ZipResourceFile expansionFile = APKExpansionSupport.getAPKExpansionZipFile(MainActivity.this, 3, 0);
for (ZipResourceFile.ZipEntryRO entry : expansionFile.getAllEntries())
Log.d("",entry.mFileName);
InputStream input = expansionFile.getInputStream(Environment.getExternalStorageDirectory().toString()
+ "/sdcard/Android/obb/com.example.project/main.3.com.example.project.obb/obb/file.zip/file.apk");
但是expandFile总是为null。 .obb文件是使用Jobb创建的,用于文件夹obb / file.zip。
答案 0 :(得分:1)
使用以下代码解决:
final StorageManager storageManager = (StorageManager) getSystemService(STORAGE_SERVICE);
String obbPath = Environment.getExternalStorageDirectory() + "/Android/obb";
final String obbFilePath = obbPath + "/com.example.project/main.3.com.example.project.obb";
OnObbStateChangeListener mount_listener = new OnObbStateChangeListener() {
public void onObbStateChange(String path, int state) {
if (state == OnObbStateChangeListener.MOUNTED) {
if (storageManager.isObbMounted(obbFilePath)) {
Log.d("Main","Mounted successful");
String newPath = storageManager.getMountedObbPath(obbFilePath);
File expPath = new File(newPath+"/file.zip/file.apk");
Log.d("Main","File exist: " + expPath.exists());
}
}
}
};
storageManager.mountObb(obbFilePath, "key", mount_listener);
安装.obb文件后,我可以在路径mnt / obb / myfolder中访问我的数据。
答案 1 :(得分:0)
我用它来从obb中读取特定文件:
在AndroidManifest.xml中:
<!-- Needed for reading the obb file -->
<provider
android:name=".extension.ZipFileContentProvider"
android:authorities="com.example.extension.ZipFileContentProvider"/>
ZipFileContentProvider:
public class ZipFileContentProvider extends APEZProvider {
@Override
public String getAuthority() {
return "com.example.extension.ZipFileContentProvider";
}
}
获取文件URI:
final Uri CONTENT_URI = Uri.parse("content://" + "com.example.extension.ZipFileContentProvider");
Uri uri = Uri.parse(CONTENT_URI + "/drawable/" + name)
要创建obb文件,我使用了gradle脚本(res文件夹位于同一目录中):
task createExpansionFile(type: Zip) {
from 'res'
entryCompression = ZipEntryCompression.STORED
archiveName = 'main' + '.' + '1' + '.' + 'com.example' + '.obb'
println archiveName
println relativePath(destinationDir)
println relativePath(archivePath)
}