CODEWITHSUNDEEP
androidunzipzipinputstream
Ravi Yadav
Ravi Yadav

Reputation: 2386

Zip Exception: Entry is not named while unzipping the zip file

I have downloaded the zip file and when I am unzipping the files I am getting the above exception. Below is my structure after I have unzipped my zip file.

zip structure(After unzip): folder1 subfolder1 sub1 sub2 subfolder2 subf1 subf2

 String inputPath = Environment.getExternalStorageDirectory().getPath()+"/"+arrayListQuestions.get(0).getQuestion_asset_name();

            Log.e("inputPath",inputPath);
            String outputPath = Environment.getExternalStorageDirectory().getPath()+"/unzip/";
            Log.e("outPath",outputPath);
ZipManager zipManager = new ZipManager();
        try {
            zipManager.unzip(inputPath, outputPath);
        } catch (IOException e) {
            e.printStackTrace();
            Log.e("error_unzip",e.getLocalizedMessage());
        }

UnzipFunction:

public void unzip(String zipFilePath, String destDirectory) throws IOException {
        File destDir = new File(destDirectory);
        if (!destDir.exists()) {
            destDir.mkdir();
            }
        ZipInputStream zipIn = new ZipInputStream(new FileInputStream(zipFilePath));
        ZipEntry entry = zipIn.getNextEntry();
        // iterates over entries in the zip file
        while (entry != null) {
            String filePath = destDirectory + File.separator + entry.getName();
            if (!entry.isDirectory()) {
                // if the entry is a file, extracts it
                extractFile(zipIn, filePath);
                } else {
                // if the entry is a directory, make the directory
                File dir = new File(filePath);
                dir.mkdir();
                }
            zipIn.closeEntry();
            entry = zipIn.getNextEntry();
            }
        zipIn.close();
        }


    private void extractFile(ZipInputStream zipIn, String filePath) throws IOException {
        BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(filePath));
        byte[] bytesIn = new byte[BUFFER];
        int read = 0;
        while ((read = zipIn.read(bytesIn)) != -1) {
            bos.write(bytesIn, 0, read);
            }
        bos.close();
        }

Upvotes: 0

Views: 511

Answers (1)

LubosD
LubosD

Reputation: 840

The solution is to use ZipFile instead of ZipInputStream. ZipFile appears to handle name-less local file headers gracefully.

Note that the disadvantage of ZipFile is that it cannot process arbitrary InputStreams and only takes files.

Also note that the problem appears to be specific to Android. I don't get this exception with Oracle's JRE.

Upvotes: 0

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