Programming Fragments in Android
Learn how to easily program Fragments in Android, step by step. Complete examples with phone and tablet layouts, callbacks and full source code to download.
Articles
Fragments in Android
Learn what Fragments are in Android, how they differ from Activities, and how to build apps that adapt to any screen size, with their lifecycle explained.
Android Error – java.lang.NoClassDefFoundError for No Apparent Reason
Getting a java.lang.NoClassDefFoundError in Android for no apparent reason? Follow these two simple fixes in Eclipse to get your project working again.
ListView Expansion: Custom GridView and Spinner in Android
Answers to the most common ListView questions in Android: custom GridView, custom Spinner, clickable Views inside rows and simulating a RadioGroup.
Multitasking and Threads: Easy, With Lots of Benefits
Learn what multitasking and threads are, how concurrency and parallelism differ, and why cores matter, explained with simple comic-style examples.
ListView in Android: Building a Custom List
Learn how to create an Android ListView quickly and effectively. Everything you need to know about ListView and Adapter in Android, with full example code.
Android Error – The Connection to adb Is Down and a Severe Error Has Occurred
Getting the Eclipse error "The connection to adb is down, and a severe error has occured"? Here are two simple ways to restart adb and fix it.
Android Error – SDK Installer Doesn’t Detect the Java JDK
The Android SDK installer can't find the Java JDK and won't let you continue? Here are three solutions, including the common Windows 8 case.
Activity – Understanding and Using an Android Activity
Learn what an Android Activity really is, how its lifecycle works, and how to create and launch activities with a full working example, step by step.
Change the Default Password for the ADSL Router Configuration Menu (Basic Security)
Learn how to change the default password for your ADSL router's configuration menu, step by step, and keep your network private and secure from intruders.
First Contact with Your ADSL Router – Accessing Its Configuration Menu
Learn how to log in to your ADSL router's configuration menu from a browser, which default credentials to try, and how the admin panel is laid out.
How to Protect Our Wi-Fi Wireless Network
Learn why a Wi-Fi network is vulnerable, how data can be intercepted, and how to protect it with encryption keys, router settings and MAC address filtering.