Storing Your App’s Data
Evolua em sua carreira com um certificado que antecipa seu sucesso profissional.
Persisting data is a core skill for any iOS developer. This course will teach you two techniques for storing data to your device’s hard drive: the NSKeyedArchiver method and the more complex, but robust Core Data.
Aulas com profissionais do setor
Ritmo individual de aprendizado
Comunidade de apoio aos alunos
Este curso é seu primeiro passo em direção a uma carreira com o programa Trabalhe com desenvolvimento iOS .
Aumente seu conjunto de habilidades e suas chances de contratação com um modelo de aprendizagem inovador e independente.
Evolua em sua carreira com um certificado que antecipa seu sucesso!
This course assumes extensive iOS experience. Specifically, you’ve built several apps, know how to use core iOS libraries, and are familiar with networking and MVC design principles. Introduction to iOS App Development with Swift, UIKit Fundamentals, and iOS Networking with Swift are good courses to take if you need to familiarize yourself with these concepts.
The course also assumes basic familiarity with git. Specifically, you will need to be able to clone git repositories and checkout branches specific to each lesson. How to Use Git & GitHub is a great option if you need to brush up on these skills.
You will need access to a Mac computer running OS X 10.9 or later. However, you do not need an iPad or iPhone to complete the activities. All exercises can be completed using the iOS simulator built into Xcode.
Veja os requisitos tecnológicos necessários para fazer um curso na Udacity.
Just like computers, your iPhone has two types of memory: main memory (RAM) and the hard drive. In all the apps you’ve written, you’ve interacted with RAM, but this memory is limited, and it’s important that the apps you design use it as efficiently as possible. To use the RAM efficiently it is important to be able to store data on the hard drive.
It is also important for your apps to maintain state when they are turned off. The apps you’ve built probably aren’t persistent, meaning that they don’t save their state to the device’s hard drive. As RAM is volatile, data is lost when the app stops running. In this course, you’ll learn how to persist the state of the device using NSKeyedArchiver and Core Data.