Xcode - Fresh Beginning (Page 2)

Xcode

A collection of 48 posts

Debugging Autolayout issues in the Xcode

With the release of new iPhone devices in addition to older models iPhone4 and iPhone5, developers are forced to switch to autolayout instead of using manual frames to update the view layouts. As we extensively use autolayout, goof-ups are very much likely to happen. I always miss something or add

Using NS_DESIGNATED_INITIALIZER with Xcode6

One day I was working on one of my side projects. I came to know about NS_DESIGNATED_INITIALIZER Apple introduced in Xcode6. When you have choice of multiple initializers and still you want to init a model with specific initializer, you can use this keyword NS_DESIGNATED_INITIALIZER which

iOS UI Testing with Fastlane snapshot tool

This week I played a little bit with UI testing on Xcode. This goes without saying that I had to go through some ordeal. (More about it in later paragraphs) So the app I build for UI testing is simple. Description goes below. 1. You have list of countries to

Interactive Notifications iOS

Interactive Notifications iOS

Note : This post uses Houston to send push notifications. Please refer to official Github page or my Previous post on how to send automated test push notifications - Push notifications with Accept/Cancel buttons In order to achieve this, let's create a method called registerForNotification in didFinishLaunchingWithOptions method from Appdelegate

Enable zoom for web pages on UIWebView - Swift

Yesterday I ran into annoying problem. In one of our apps we load web pages in standard UIWebView. Nothing great, everyone does it. However, the requirement was user should be able to pinch and zoom them since the font was too small for an ordinary user. It was totally fine

iOS - Add multiple attachments to an email (Swift 2.3)

Recently I was working on my Simple Signature iOS app. This app allows you to make and save multiple signatures. You can save and view signature creation as an image or a video. You can find more information about this app on my other post specifically dedicated to description of

Minesweeper game on iOS

Minesweeper game on iOS

Few months back I working on the classic game of Minesweeper. I have been playing that game from the childhood so it was even more fun to write the game and virtually bring that to life. The history since I first wrote the code for this game goes long back

iOS Animations - Part 5

Building simple image slider with Core Animation. You will soon find that it is supremely easy and customizable in terms of other options without having developer to deal with underlying intricacies. Since most of the code and functions are offered by Apple's core animation framework. We are going to use

iOS Animations - Part 4

In this we are going to learn how to animate the movement of shape along the bezier path. As we learned in the previous post, you can create a simple Sine wave shaped bezier path as follows, UIBezierPath* circularPath = [UIBezierPath bezierPath]; [circularPath moveToPoint:CGPointMake(50, 300)]; [circularPath addCurveToPoint:CGPointMake(300,

iOS Animations - Part 3

Animating bezier curve In the Last post we saw how to draw any arbitrary curves using two iOS classes viz. UIBezierPath and core animation class CAShapeLayer. First, let us draw a UIBezierPath of our desired style and then we will animate it. First create a UIBezierPath of desired shape. We

iOS Animations - Part 2

iOS Animations - Part 2

Drawing bezier curve using core animation Today we are going to learn how to draw arbitrary shapes using UIBezierPath and CAShapeLayer classes. Drawing shape with UIBezierPath is very simple. First you have to make an outline using UIBezierPath and then use this path to assign to path for CAShapeLayer object.

iOS Animations - Part 1

This is the first part of series of blog posts on iOS animations. Hope you will enjoy this series. I am also looking forward to hear your thoughts, input and suggestions on the content. Image animation using image sprite It was a while after I started iOS development I came

Change cell appearance on selection

As an iOS developer you might have run into situations where you want to change the cell appearance when particular cell is selected. Naive approach to this would be (Which by the way I did before I came to know about this little trick) to keep track of two indexPaths.

UITableViewCell automatic height management

We all know that iOS8 brought in really nice changes. Well, it be will be too long post to describe all of them. But I will talk about one of my most favorite features Apple added into this release. Automatic height management for UITableViewCell with Autolayout Yes, you can fit

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

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

Add delay in Swift

Add delay in Swift

Adding delay is bad. But sometimes for philosophical, legal and professional reasons we do desire to add delays in our code. Below is the code for method to add a delay in the Swift (< 3.0). function addDelay(with desiredDelayInSeconds: Double) { let delay = desiredDelayInSeconds * Double(NSEC_PER_SEC) let time

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

Increase the build number while Archiving in Xcode

If you are a iOS or MAC software developer, there are pretty dense chances that you usually archive the build and send it in-house (Through Crashlytics or TestFlight to distribute build to client and organization people) or to the Apple App store. Archiving in the context of iOS and Xcode

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