Auto increment version code in Android app

Question

is there a way to auto-increment the version code each time you build an Android application in Eclipse?

According to http://developer.android.com/guide/publishing/v

Answer 1

All credit goes to ckoz, but I writed my own implementation in c#. I think it's a little faster and doesn't eat errors because If something goes wrong probably something is wrongly configured and I should know about it.

namespace AndroidVersionCodeAutoIncrement
{
    using System.IO;
    using System.Text.RegularExpressions;

    public class Program
    {
        private static readonly Regex VersionCodeRegex = new Regex("android:versionCode=\"(?.*)\"", RegexOptions.Compiled);

        public static void Main()
        {
            using (var manifestFileStream = File.Open("AndroidManifest.xml", FileMode.Open, FileAccess.ReadWrite))
            using (var streamReader = new StreamReader(manifestFileStream))
            {
                var manifestFileText = streamReader.ReadToEnd();

                var firstMatch = VersionCodeRegex.Match(manifestFileText);
                if (firstMatch.Success)
                {
                    int versionCode;
                    var versionCodeValue = firstMatch.Groups["version"].Value;
                    if (int.TryParse(versionCodeValue, out versionCode))
                    {
                        manifestFileText = VersionCodeRegex.Replace(manifestFileText, "android:versionCode=\"" + (versionCode + 1) + "\"", 1);

                        using (var streamWriter = new StreamWriter(manifestFileStream))
                        {
                            manifestFileStream.Seek(0, SeekOrigin.Begin);
                            streamWriter.Write(manifestFileText);
                            manifestFileStream.SetLength(manifestFileText.Length);
                        }
                    }
                }
            }
        }
    }
}