CODEWITHSUNDEEP
javaandroidfile
Si8
Si8

Reputation: 9225

Get lastModifiedDate() and fileSize() of files in ArrayList

I have the following Method:

    public View onCreateView( LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState ) {
        final RelativeLayout mFrame3 =  (RelativeLayout) inflater.inflate( R.layout.ptrip, container, false );

        File folder = new File(Environment.getExternalStorageDirectory() + "/tc/");
        ListView lv;
        ArrayList<String> FilesInFolder = GetFiles(folder.getAbsolutePath());
        Toast.makeText(getActivity(), FilesInFolder.get(0).toString(), 2000).show(); //display filename (0)
////////////////////////
///////////////////////
//would this work:
//for (int i = 0; i <= FilesInFolder.length(); i++) {
//long lastTime = FilesInFolder[0].lastModified();
//String dateString = DateFormat.format("MM/dd/yyyy", new Date(lastTime)).toString(); //last modified date?
//String sizeString = getReadableSize(FolderInFiles[i].length()); //file size?
//}
//////////////////////
//////////////////////
        lv = (ListView) mFrame3.findViewById(R.id.lvFiles);

        lv.setAdapter(new ArrayAdapter<String>(getActivity(), android.R.layout.simple_list_item_1, FilesInFolder));

        lv.setOnItemClickListener(new AdapterView.OnItemClickListener() {
        public void onItemClick(AdapterView<?> parent, View v, int position, long id) {
                // Clicking on items
            //Toast.makeText(getActivity(), "Item " + (position + 1) + ": ID" + v, Toast.LENGTH_SHORT).show();
            }
        });
        return mFrame3;
    }

My GetFolder function is:

public ArrayList<String> GetFiles(String DirectoryPath) {
    ArrayList<String> MyFiles = new ArrayList<String>();
    File f = new File(DirectoryPath);


    //f.mkdirs();
    File[] files = f.listFiles();
    if (files.length == 0)
        return null;
    else {
        for (int i=0; i<files.length; i++)  {
            if (files[i].getName().endsWith(".tol")) {
                long lastTime = files[i].lastModified();
                String dateString = DateFormat.format("MM/dd/yyyy", new Date(lastTime)).toString();
                String sizeString = getReadableSize(files[i].length());
                //String fileName = files[i].getName().substring(0, files[i].getName().lastIndexOf("."));
                MyFiles.add(files[i].getName());
                //MyFiles.add("Trip Name: " + fileName + "\nTrip Taken On: " + dateString + "\n" + sizeString);
            }
        }
    }

    return MyFiles;
}

How do I get the fileSize and lastModifiedDate inside the onCreateMethod? I commented out the fileSize and lastModifiedDate inside the GetFolder method because I am trying to get the filename only so I can read the file inside onCreate method to display the ASCII contents of it in a MultiLine EditText.

Would this work in onCreate as added above:

//display filename (0)
////////////////////////
///////////////////////
//would this work:
//for (int i = 0; i <= FilesInFolder.length(); i++) {
//long lastTime = FilesInFolder[0].lastModified();
//String dateString = DateFormat.format("MM/dd/yyyy", new Date(lastTime)).toString(); //last modified date?
//String sizeString = getReadableSize(FolderInFiles[i].length()); //file size?
//}
//////////////////////
//////////////////////

Upvotes: 1

Views: 501

Answers (1)

Beryllium
Beryllium

Reputation: 12998

You have three options

  • If you do not want to change GetFiles: In onCreate, create a File instance from the file names, and call the methods there. This is the only option, if you cannot change GetFiles for whatever reason.

  • Create a class MyFile which has three fields (name, fileSize and lastModifiedDate), and return a List<MyFile> from GetFiles. Generally speaking this option is useful, if you only want to return a limited subset of properties or read-only views of an instance (without setters for example).

  • Return a List<File> from GetFiles

The last option is simple and idiomatic.

Upvotes: 1

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