Hi!  Welcome to Lorenz’s Blog!  My name is  Lorenz, the author of this site and all of its contents.  I’m a web and mobile application developer. I have been actively involved in web application development for over ten years. I started involving in mobile application development since 2010, where Android was my starting point. I love programming especially in PHP, JavaScript and Java (Android). I also have a big interest in web mapping technology such as web based GIS and web map services such as Google Map.  Currently i’m focusing on mobile application development, especially on Android and developing PHP based backend API. You can view all of my Android apps i’ve developed on My Apps page. You can contact me anytime with the following cantact addresses:

Yahoo messenger:   harrley_id  

Google Talk: lorensius.wlt

Email: lorenz [at] londatiga [dot] net

About me: about.me/lorensiuswlt

My Google profile:

Thanx for your visit and come back often ..


  1. Yode arliando says

    Salam kenal Kang.. :D
    Saya masuk ke blognya waktu nyari2 tutorial android, saya lagi belajar.
    Ntar boleh ya Kang nanya2 tentang Android. :)

    • says

      Maksudnya button share to facebook, twitter etc? caranya gini:

      Intent intent = new Intent(Intent.ACTION_SEND);

      intent.putExtra(Intent.EXTRA_SUBJECT, subject);
      intent.putExtra(Intent.EXTRA_TEXT, text);

      startActivity(Intent.createChooser(intent, “Share in:”));

  2. says


    hi lorenz, i am big fane of you whenever i found any problem i am coming on your blog.

    i want check whether specific app is movable to sd card or not using code…
    please help me..

  3. Johnny says

    Hi Lorenz,

    Been following your awesome blog for some time and tx for nice tutorial. I’m new at mobile development. I need some help to build something like this:

    * The app needs to display images from around the user’s current location.
    * The app should automatically detect the user’s location and query an online service of your choosing for places around the user and photos associated with those places.
    * Suggested services can be Foursquare, Instagram and Flickr.
    * The app should group photos according to location
    * Tapping on a group should display all photos for that group
    * Tapping on a photo should display it full screen
    * Any metadata associated with the photo (title, caption, etc.) should be displayed along with the photo
    * The app may display the photos on a map

    Would really appreciate the help.


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