getNextEntry() doesn't display folder as an entry?

Question

Hi I'm new to android programming.

I'm trying to create a program to unzip a zipped file in my sd card and I noticed something when I debug.

public void testZipOrder() throws Exception {
            File file = new File(_zipFile);
            zis = new ZipInputStream(new FileInputStream(file));
            ZipEntry entry = null;
            while ( (entry = zis.getNextEntry()) != null ) {
             System.out.println( entry.getName());
            }
        }
    } 

this give me an output of :

06-27 00:42:06.360: I/System.out(15402): weee.txt
06-27 00:42:06.360: I/System.out(15402): hi/bye.txt
06-27 00:42:06.360: I/System.out(15402): hi/hiwayne.txt

isn't it suppose to give

weee.txt
hi/
hi/bye.txt
hi/hiwayne.txt

or something that displays its folder instead?

Answer 1

I tried this on my own environment using a test zip file created with 7zip and the following method:

public void testZipOrder() throws Exception {
    File file = new File("zip.zip");
    ZipInputStream zis = new ZipInputStream(new FileInputStream(file));
    ZipEntry entry = null;
    while ( (entry = zis.getNextEntry()) != null ) {
     System.out.println( entry.getName());
    }
    zis.close();
}

Note this method is effectively identical to yours.

The resulting output was:

file1.txt
folder1/
folder1/file2.txt
folder1/folder2/
folder1/folder2/file3.txt

Which is, I believe, what you are looking for. As such I expect the problem is with the zip file itself, not your code. It is likely that your zip file does not contain an entry for the directory "hi/".

See here for a basic description of how zip files are structured.