filepath

I've been trying to get my head around this so maybe some of you can help me. I have a list of files with their full paths (these are just strings the files are on another machine), e.g: C:\a\b\c\file1.txt C:\a\b\c\file2.txt C:\a\d\file3.txt C:\e\file4.txt I want to create a Jtree to show the directory structure like this: C: a b c file1.txt file2.txt d file3.tct e file4.txt I've been spliting the string on the seperator so I end up with a list of arrays like: "C:","a","b","c","file1.txt" "C:","a","b","c","file2.txt" "C:","a","d","file3.txt" "C:","e","file4.txt" Now I want to add them an index

I am looking for an efficient way to convert back slash to forward slash in R. Sometime I copy the link of the directory from the windows and I get something like this: C:\Users\jd\Documents\folder\file.txt How can I quickly change this to C:/Users/jd/Documents/folder/file.txt ? I cannot even read the above expression as character. It throws an error "\u used without hex digits in character string starting ""C:\u". I know TAB function in R helps to find the location fast, but was just wondering if there was any other work around. I could change the working directory to the location of folder

I tried a solution (see below) that works fine, except in Android 4.4 the call to startActivityForResult() brings up an activity titled "Open from", which has "Recent", "Images", "Downloads" as well as several apps to pick from. When I choose "Images" and try to resolve the returned content URI (using the code below), the call to cursor.getString() returns null. If I choose the exact same file using the Gallery app, cursor.getString() returns a file path. I've only tested this in API levels 16 and 19. Everything works as expected in 16. As far as 19 goes, I have to choose the Gallery or other