How to display name of the files without extensions and in alphabetical order

Question

I have this script which allow to display inside a list view, the name of the files located in a specific folder.

I would like to know if is possible adapt this script to display the files without the extension and in alphabetical order. Thank you

    File dir = new File(Environment.getExternalStorageDirectory().getPath() + "/osmdroid/tiles/");
    File[] filelist = dir.listFiles();
    String[] theNamesOfFiles = new String[filelist.length];
    for (int i = 0; i < theNamesOfFiles.length; i++) {
       theNamesOfFiles[i] = filelist[i].getName();
    }

    adapter = new ArrayAdapter<String>(this, R.layout.list_row, theNamesOfFiles);
    lv.setAdapter(adapter);

possible duplicate of [How to get file name without the extension?](http://stackoverflow.com/questions/924394/how-to-get-file-name-without-the-extension) — upog, Mar 10 '14 at 17:29
For the alphabetical order you could use [Collections.sort](http://docs.oracle.com/javase/7/docs/api/java/util/Collections.html) — gtgaxiola, Mar 10 '14 at 17:31

score 1 · Answer 1 · answered Mar 10 '14 at 17:35

1

Try this

File dir = new File(Environment.getExternalStorageDirectory().getPath() + "/osmdroid/tiles/");
File[] filelist = dir.listFiles();
String[] theNamesOfFiles = new String[filelist.length];
for (int i = 0; i < theNamesOfFiles.length; i++) {
   //do a little change
   String temp = filelist[i].getName();
   theNamesOfFiles[i] = temp.substring(0,temp.length() - temp.lastIndexOf("."));
}
Arrays.sort(theNamesOfFiles)
adapter = new ArrayAdapter<String>(this, R.layout.list_row, theNamesOfFiles);
lv.setAdapter(adapter);

answered Mar 10 '14 at 17:35

Hello Dian. Your code work perfectly to sort names in alphabetical order. For the file extensions, it just remove the last letter – Bombolo Mar 10 '14 at 17:42
seems that can not return more than 4 letters per string – Bombolo Mar 10 '14 at 22:03

score 0 · Answer 2 · answered Mar 10 '14 at 17:35

0

To order your file list array in alphabetical order you can use sort() static method of Arrays:

Arrays.sort(filelist);

And to remove extension you can use:

fileName = FilenameUtils.removeExtension(fileName);

answered Mar 10 '14 at 17:35

stefanuc111

93
2
4

Thanks for the answer. Unfortunately seems that i don't have this apache package in Eclipse – Bombolo Mar 10 '14 at 17:48

How to display name of the files without extensions and in alphabetical order

2 Answers2