generating R.java file from command line “invalid resource directory name”

Question

I need to build the R.java file from resource using the command line. I do this using the following Java program. I get the Errors:

invalid resource directory name: C:\Users\Muzammil-Husnain\testing\Soothing-snow-fall\res/drawable-tvdpi

and

invalid resource directory name: C:\Users\Muzammil-Husnain\testing\Soothing-snow-fall\res/drawable-xhdpi

If I remove these two folders from my res folder it says

ERROR: input directory 'Files' does not exist

Here is my code:

public static String ProjectPath = "C:\\Users\\Muzammil-Husnain\\testing\\Soothing-snow-fall";
public static String ANDROID_HOME = "C:/Program Files (x86)/Android/android-sdk";

public static void generateRfile() {
    try {
        File projectDirectoryFile = new File(ProjectPath);
        String command = "aapt package -v -f -m "+
        " -S \""+projectDirectoryFile.getCanonicalPath()+"/res\"" +
        " -J \""+projectDirectoryFile.getCanonicalPath()+"/gen\"" +
        " -M \""+projectDirectoryFile.getCanonicalPath()+"/AndroidManifest.xml\"" +
        " -I C:\\Program Files (x86)\\Android\\android-sdk\\platforms\\android-21\\android.jar\"";
        System.out.println("Directory Path : "+projectDirectoryFile.getCanonicalPath());
        System.out.println(command);
        ProcessBuilder processBuilder = new ProcessBuilder("cmd.exe", "/c", command);
        processBuilder.redirectErrorStream(true);
        Process process = processBuilder.start();
        BufferedReader r = new BufferedReader(new InputStreamReader(process.getInputStream()));
        String line;
        while (true) {
            line = r.readLine();
            if (line == null) {
                break;
            }
            System.out.println(line);
        }

    } catch (IOException ex) {
        Logger.getLogger(RunApplicationOnPrject.class.getName()).log(Level.SEVERE, null, ex);
    }
}

Answer 1

You are mounting a command line to call cmd.exe, and the directory isn't within double quotes, so the cmd.exe is interpreting the "Files" in C:\Program Files as different arguments. Try to place the directories/files specifications between double quotes, as this:

    String command = "aapt package -v -f -m "+
    " -S \""+projectDirectoryFile.getCanonicalPath()+"/res\"" +
    " -J \""+projectDirectoryFile.getCanonicalPath()+"/gen\"" +
    " -M \""+projectDirectoryFile.getCanonicalPath()+"/AndroidManifest.xml\"" +
    " -I \""+ANDROID_HOME+"/platforms/android-18/android.jar\"";