Override The AngularJS Exception Handler

AngularJS is one of the hottest things around right now. Maybe you’re finding yourself getting pretty deep in its greatness and you’re ready to customize how exceptions are handled by default.

Lucky for us there is a way to override the default functionality and do whatever we want when an error happens.

Use RegEx To Analyze Credit Card Numbers In JavaScript

RegEx is a powerful beast. Previously I wrote how to test password strength using JavaScript and regular expressions. This time we’ll take a look at how to check credit card providers based on the credit card number entered. No, this won’t test if a credit card number is legitimate, but it will test if it was entered correctly.

Extending The Gradle Build File In Apache Cordova 5.0+

Apache Cordova 5.0 brought many changes, all of which are for the best, but many of which are a major inconvenience in terms of development or deployment. For example, previously I wrote about whitelisting external resources in Ionic Framework because by default everything is now blacklisted.

This time we’re going to explore the new default build system, Gradle. This build system is nothing new as I’ve written about it in the past, however, it is new when it comes to Apache Cordova and hybrid mobile application development.

You may run into library conflicts or need to do little customizations to your build process. We’re going to see how to do these things. Gradle is for Android only, so if you’re developing for iOS, feel free to move along.

From Bitmap To Base64 And Back With Native Android

Working with images in Android is great, but what happens when you need to store them somewhere other than the file system? Let’s say for example you want to store them in a SQLite or NoSQL type database. How would you store such a piece of data?

One common way to store image data would be to first convert the image into a base64 string. We all know strings are very easy to store in some data structure.

Base64 via Wikipedia:

A group of similar binary-to-text encoding schemes that represent binary data in an ASCII string format by translating it into a radix-64 representation.

Another way would be to store the binary data in a CLOB or BLOB type SQL column, but to keep it generic, in this particular example, we will be exploring the idea of converting images into base64 strings.

Make A Gallery-Like Image Grid Using Native Android

Previously I had written an article regarding how to make a gallery-like image grid using Ionic Framework, but what if we wanted to accomplish the same using the native Android SDK?

In this tutorial we’ll see how to make use of the Android GridView with an image adapter to display remote images from the internet.

Whitelist External Resources For Use In Ionic Framework

It was recently brought to my attention that big things came with the latest Apache Cordova Android and iOS update. One of the major updates being the requirement of whitelisting in order to use external resources.

What exactly does this mean?

Take the example of some random API like Facebook or TinyURL. If you try to perform a request on either of these APIs it will fail because by default everything external is blacklisted. By adding to the whitelist, things change.

Highlight Text In A String Using JavaScript And AngularJS

Have you ever wanted to highlight text in a string on a web page using AngularJS? If your answer was no, don’t disregard, because you may one day need to. The good thing is this is not very hard to accomplish.

There are many ways to do this using JavaScript, but we’re only going to examine one of those methods.

Using AngularJS and a few regular expressions (RegEx) with JavaScript, you can find text in a string and then apply your own customizations.