Objective-C - Fresh Beginning (Page 2)

Objective-C

A collection of 38 posts

iOS - Custom Loader library

Few weeks ago I worked on custom loader library for iOS applications. I was inspired by one such library on GitHub itself. Besides I started reading excellent iOS Core Animation book by Nick Lockwood. Indeed the library was not possible without animation tips and trick from this book. Here's the

Adding commas to numbers on iOS

Recently I ran into another problem in one of our care apps. We had some user entries in our journals. Some of these numbers were in few thousands. (Such as number of steps, calories etc.). Initially we used to display them as it is. But later we figured that it

Travel Scams Information - iOS app

Travel Scams Information - iOS app

Yesterday I started working on an iOS app to provide travelers with travel scams around the world. I already collected most of the information from infographics found on the justtheflight.co.uk website. This was quite useful for not only for new travelers, but also for experienced travelers too. I

Decode HTML entities in the iOS

Decode HTML entities in the iOS

While working on one of our legacy projects, I came across interesting (Re: Code smell) code. We were getting HTML encoded strings in one of our content call. We just avoided to load this on UIWebView using [web loadHTMLString:[HTML String] baseURL:[Project base URL]] Pro tip : We usually leave

NSInvocation on iOS with gotchas

Dynamic method execution is the strong feature of Cocoa runtime environment. NSInvocation allows users to execute method dynamically using selector and method signature on the fly. In short you can pass method string to the selector and create invocation out of it on the fly. You do not even need

Writing virtual file and folder browser on iOS

Writing virtual file and folder browser on iOS

Last week while working on one of my personal projects, I got an idea of creating local file system where users can create folder and store image files. I am saying it because my app mainly deals with image types. If you want, you can try saving PDF, movies and

How to decode URL string on an iOS

Often times we need to deal with URL encoded string. This is quite awkward to use for an UI. In order to fix this issue, we often tend to decode it. Today we will see how to decode an URL string on an iOS Say, NSString* inputURLString is an URL

POSTing parameters to PHP from an iOS app

POSTing parameters to PHP from an iOS app

Recently I ran into an interesting problem on how to POST parameters from an iOS app (I was using AFNetworking for communications) to PHP. Looks like it's quite straightforward for GET requests such that you can easily retrieve parameters with $_GET['parameter_name']. But for POST it's little complicated. Here's

Autolayout Tricks - Part 3

Thank you for following this series of Autolayout tricks so far. Similar to previous posts, these tricks are also based on the ideas mentioned in iOS - Autolayout Mystified) by Erica Sadun Today I am going to talk about another autolayout trick. How to arrange view in stacks. In short,

Autolayout Tricks - Part 2

Create nested views structure with Autolayout. (Based on the idea and implementation based on iOS - Autolayout Demystified) While going through Erica Sadun's above mentioned book, I came across interesting problem on how to arrange nested views into each other making beautiful structure. It was quite a challenge for me

Autolayout Tricks - Part 1

Height adjusting UILabel with autolayout in iOS. We all know that UILabels have intrinsic content size which allows them to adjust their height based on the content size. Which means you can add UILabel to your views, set numberOfLines to zero, set appropriate height constraint and see in action that

Adding custom Media content into UIWebView

Recently I was working on the app to show custom media content in the UIWebView. This media could be * Images * Regular videos * YouTube videos * PDF Files In this post, I will show how to handle these media types * Images * Local images If you already have images in your local directory