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Programming

How to Make Android Map Scrollable Inside a ScrollView Layout

February 10, 2014 by Lorensius Londa 11 Comments

Technically, placing a map view  inside a ScrollView layout container can make the map becoming difficult to scroll. This is because the scrollable layout container will intercept the touch event so the map will lose the touch event, making it difficult to scroll or pan. This happens either on … [Read more...] about How to Make Android Map Scrollable Inside a ScrollView Layout

How to Remove Website URL Field From Genesis Theme Comment Form

February 9, 2014 by Lorensius Londa Leave a Comment

Website URL field in wordpress comment form can be a pain for blog owner. Spammer always use the field to drop the shady links that useless or can be harmful to readers. Genesis theme uses its own function to customize comment form. To remove the URl field, we have add filter to remove the … [Read more...] about How to Remove Website URL Field From Genesis Theme Comment Form

Google Wallet Merchant Registration Available in Additional Countries

February 9, 2014 by Lorensius Londa Leave a Comment

Good news for Android developers, Google currently introducing Google Wallet Merchant registration availability for Google Play Developers in additional countries. Starts from Feb 6 2014, developers from Indonesia, Malaysia, The Philippines, and Thailand will be able to sign up as merchants through … [Read more...] about Google Wallet Merchant Registration Available in Additional Countries

Android Tips: How to Place Image or Logo at The Center of Actionbar

January 24, 2014 by Lorensius Londa 1 Comment

When building an Android application, sometimes we need to put  application logo at the center of Actionbar. Android doesn't provide a straight method to place a logo image at the center of Actionbar so we have to make a custom layout contains the logo image and place it on Actionbar using custom … [Read more...] about Android Tips: How to Place Image or Logo at The Center of Actionbar

How to Use Postgresql pg_dump in Crontab Without Password

January 22, 2014 by Lorensius Londa 1 Comment

Postgresql pg_dump is a usefull tool to backup Postgresql database. By default, pg_dump will ask for a password of the user that runs the command from command line. It is pretty easy if we manually type it from command line. But if we want to use it in automatic regular backup using crontab, it can … [Read more...] about How to Use Postgresql pg_dump in Crontab Without Password

Simple JSON RPC Client for Android

January 11, 2014 by Lorensius Londa 2 Comments

This is a simple JSON RPC Client for Android. I wrote this class for one of my Android projects that needs to connect to external JSON RPC API. Feel free to use it, download the files at the bottom of this post..;) JSON RPC Client How to use it: [ad] Download Simple JSON RPC … [Read more...] about Simple JSON RPC Client for Android

How to solve error: Conversion to Dalvik format failed with error 1 in Android on export

January 11, 2014 by Lorensius Londa Leave a Comment

Signing Android APK is the latest step from our  Android app development process before uploading it to Google Play Store. Using a production keystore, we can easily create a signed apk using Export menu on Eclipse IDE. But sometimes, the error might occur while exporting it. Conversion to … [Read more...] about How to solve error: Conversion to Dalvik format failed with error 1 in Android on export

How to Programmatically Show and Hide Soft Keyboard in Android

January 29, 2013 by Lorensius Londa 2 Comments

In Android, soft keyboard will be shown automatically when we launch an activity that contains a focusable EditText widget. But in some cases, we need to show or hide the soft keyboard manually or programatically. We can achieve this using InputMethodManager class. For example, there is an … [Read more...] about How to Programmatically Show and Hide Soft Keyboard in Android

Sample Code to Get MD5 Checksum of a File in Android

September 11, 2012 by Lorensius Londa 4 Comments

When downloading a file over internet, the uploader usually provides an MD5 checksum for the file to ensure the integrity of the file. MD5 checksum (message digest) is something like a fingerprint or digital signature for  a file. The checksum is unique for a file and  there is very small … [Read more...] about Sample Code to Get MD5 Checksum of a File in Android

How to Send Message to Google Cloud Messaging (GCM) Server Using JSON and PHP

August 25, 2012 by Lorensius Londa 8 Comments

Google Cloud Messaging (GCM) is a free service from Google that helps Android developers to send data from their servers to Android applications on Android devices. GCM is the next generation of Android Cloud to Device Messaging (C2DM) which is currently deprecated but still in service without … [Read more...] about How to Send Message to Google Cloud Messaging (GCM) Server Using JSON and PHP

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