Read a file from another APK programmatically under Android

getInputStreamFromApkResource.java

public static InputStream getInputStreamFromApkResource(String apkFilePath, String apkResPath) throws IOException {
    JarFile jarFile = new JarFile(apkFilePath);
    JarEntry jarEntry = jarFile.getJarEntry(apkResPath);
    return jarFile.getInputStream(jarEntry);
}


// Example usage reading the file "SecureManifest.xml" under "assets" folder:
File sdcard = Environment.getExternalStorageDirectory();
File apkFile = new File(sdcard, "file.apk");
if (apkFile.exists()) {
    try {
        InputStream is =getInputStreamFromApkResource(apkFile.toString(), "assets/SecureManifest.xml");
        BufferedReader br = new BufferedReader( new InputStreamReader(is));
        String str;
        while ((str = br.readLine()) != null) {
            Log.d("***", str);
        }

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