https://github.com/alfaizkhan/expansion-file-android
How to make expansion file for android apps?
https://github.com/alfaizkhan/expansion-file-android
android expansion-files google-play obb
Last synced: 2 months ago
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How to make expansion file for android apps?
- Host: GitHub
- URL: https://github.com/alfaizkhan/expansion-file-android
- Owner: Alfaizkhan
- License: mit
- Created: 2019-09-12T05:31:17.000Z (over 5 years ago)
- Default Branch: master
- Last Pushed: 2019-09-12T06:03:46.000Z (over 5 years ago)
- Last Synced: 2025-02-02T00:11:10.412Z (4 months ago)
- Topics: android, expansion-files, google-play, obb
- Size: 44.9 KB
- Stars: 1
- Watchers: 2
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
# Expansion-File-Android
#### Google Play Developer Console has a limitation that doesn’t allow users to upload the APK file of more than 100 MB size. However, some android apps need more space for high-fidelity graphics, media files, or other large assets. Previously, if your app exceeded 100 MB, you had to host and download the additional resources yourself.
#
## How to make expansion file ?
#### Make a zip folder of your assets like audio files, video files, images or anything you want to use in your app. Rename your zip file into below format.
``` [main/patch]...obb ```
#### For example, your APK version is 1000 and your package name is com.example.app. If you upload a main expansion file, the file name should be main.1000.com.example.app.obb
#### Now your zip file is ready to upload.
#
## Storage location
#### When Google Play downloads your expansion files to a device, it saves them to the system’s shared storage location. The specific location for your expansion files is: /Android/obb//
#### When you download an app with expansion file from play store, your expansion file will be downloaded to ../Android/obb/main.1000.com.example.app.obb location.
#
## Declaring user permissions Required
#### In order to download the expansion files, the Downloader Library requires several permissions that you must declare in your application’s manifest file. They are:
```java
...
```
## How to import zip file library?
#### Zip_file library is used to extract your expansion file in your sdcard. Import it from below SDK path.
#### Eclipseandroid-sdkextrasgoogleplay_apk_expansionzip_file
#### How to use your expansion file from MainActivity.java
#### Below function is used to extract your expansion file using ZipHelper.java and create directory of extracted data from your expansion file.
```java
public void ZipHelperNew() {
ZipResourceFile expansionFile = null;
try {
expansionFile = APKExpansionSupport.getAPKExpansionZipFile(
getApplicationContext(), versioncode, 0);
ZipEntryRO[] zip = expansionFile.getAllEntries();
Log.e("", "zip[0].isUncompressed() : " + zip[0].isUncompressed());
Log.e("","mFile.getAbsolutePath() : "+ zip[0].mFile.getAbsolutePath());
Log.e("", "mFileName : " + zip[0].mFileName);
Log.e("", "mZipFileName : " + zip[0].mZipFileName);
Log.e("", "mCompressedLength : " + zip[0].mCompressedLength);
String hallostring = zip[0].mFileName;
String asubstring = hallostring.substring(0, 40);
File file = new File(Environment.getExternalStorageDirectory().getAbsolutePath() + "/dirName");
ZipHelper.unzip(zip[0].mZipFileName, file);
if (file.exists()) {
Log.e("", "unzipped Success: " + file.getAbsolutePath());
}
} catch (IOException e) {
e.printStackTrace();
}
}
```
#### Extract your expansion file using ZipHelper.java
#### This ZipHelper.java is used to extract the expansion file with above code.
```java
public class ZipHelper {
static boolean zipError = false;
public static boolean isZipError() {
return zipError;
}
public static void setZipError(boolean zipError) {
ZipHelper.zipError = zipError;
}
public static void unzip(String archive, File outputDir) {
try {
Log.d("control", "ZipHelper.unzip() - File: " + archive);
ZipFile zipfile = new ZipFile(archive);
for (Enumeration extends ZipEntry> e = zipfile.entries(); e
.hasMoreElements();) {
ZipEntry entry = (ZipEntry) e.nextElement();
unzipEntry(zipfile, entry, outputDir);
}
} catch (Exception e) {
Log.d("control", "ZipHelper.unzip() - Error extracting file "
+ archive + ": " + e);
setZipError(true);
}
}
private static void unzipEntry(ZipFile zipfile, ZipEntry entry,
File outputDir) throws IOException {
if (entry.isDirectory()) {
createDirectory(new File(outputDir, entry.getName()));
return;
}
File outputFile = new File(outputDir, entry.getName());
if (!outputFile.getParentFile().exists()) {
createDirectory(outputFile.getParentFile());
}
Log.d("control", "ZipHelper.unzipEntry() - Extracting: " + entry);
BufferedInputStream inputStream = new BufferedInputStream(
zipfile.getInputStream(entry));
BufferedOutputStream outputStream = new BufferedOutputStream(
new FileOutputStream(outputFile));
try {
IOUtils.copy(inputStream, outputStream);
} catch (Exception e) {
Log.d("control", "ZipHelper.unzipEntry() - Error: " + e);
setZipError(true);
} finally {
outputStream.close();
inputStream.close();
}
}
private static void createDirectory(File dir) {
Log.d("control",
"ZipHelper.createDir() - Creating directory: " + dir.getName());
if (!dir.exists()) {
if (!dir.mkdirs())
throw new RuntimeException("Can't create directory " + dir);
} else
Log.d("control",
"ZipHelper.createDir() - Exists directory: "
+ dir.getName());
}
}
```
#### Your expansion file has now been extracted to your SD card.
#### How to get count of images, mp4 and mp3 stored in SD card directory.
#### Try below code to get a total number of count from sdcard directory.
```java
String filePath = "/mnt/sdcard/dirName/";
File file = new File(filePath);
if (file.exists()) {
File fileCount = new File("/mnt/sdcard/dirName/);
File[] list = fileCount.listFiles();
for (File f : list) {
String name = f.getName();
if (name.endsWith(".jpg") || name.endsWith(".mp3") || name.endsWith(".mp4"))
Sdcardcount++;
}
}
```
#### Above code will get you a list of files stored in particular directory.