Downloading images is a very common task in both iOS app and Android app. In Android app, there are several ways to download image by url. It is the same in iOS. Here I will demonstrate two ways to show you how to download images from internet in iOS app. Depending on your real project, you can choose one of the solutions.
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Two Ways to Convert JSON String into NSDictionary
JSON is a very simple format for HTTP transaction between app and backend server. Currently, most of public API return data in JSON format, such as Google API. In IOS, there are several ways to convert the JSON String into Object-C object. Usually, the JSON data will be converted into NSDictionary object. Here are two pieces of example source code to convert JSON data into object in IOS.
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Create a Simple IOS App with PhoneGap (Cordova)
As the project requirement, I will start to use PhoneGap to create a IOS app from scratch. This is my first time to use PhoneGap. Here is my understand about PhoneGap. First, PhoneGap is officially renamed as Apache Cordova. It is a framework to help you create IOS app, Android app, or even Windows Phone app from HTML5 and Javascript. For people who knows HTML5 and Javascript, this is a great tool to help to create native apps from HTML and JS. In this article, I will tell you how to create an IOS app by PhoneGap (Cordova) from beginning.
Load Data From Core Data Example Source Code
Core data is the simplest way to save and load local data in ios apps. In previous tutorial, I already gave some example source code to show you how efficient it is to save data in core data. I am pretty sure you will get more exciting once you see how easy to fetch data form core data and filter core data results.
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iOS Tutorial Save Data in Core Data
In last tutorial, we successfully create a new iOS project with Core Data Framework. We also design a Managed Object Model in the Xcode data model design tool and automatically generate the classes associated with the entities in the model. So, in this post, we will continue doing the app and I will show you how to initialise the managed object model in the app and how to save save data by core data.
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