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I use iOS devices far more than the Mac. But when I do use the Mac, I miss some of the little things that make iOS special. This is one of those things. I’m glad to see it on the Mac. If you're into saving battery, there are lots of things you can do. Turn down screen brightness. Turn off background refresh for apps. Use Low Power Mode in iOS, or enable Doze on Android. You might also go into Settings General Siri and make sure 'Hey Siri' is turned off, especially if you have an iPhone 6s or 6s Plus. Your iPhone 'listens' for the words 'Hey Siri' but only when connected to power (unless you have an iPhone 6s or 6s Plus, then it's all the time), but doing the two things above and then restarting your device. Mavericks makes it easy to see the top app or two that uses the most energy on your Mac with a quick Option-Click on the battery. Further down the list are apps that use less energy or are idle.
Start Developing iOS Apps (Swift) is the perfect starting point for learning to create apps that run on iPhone and iPad. View this set of incremental lessons as a guided introduction to building your first app—including the tools, major concepts, and best practices that will ease your path.
Each lesson contains a tutorial and the conceptual information you need to complete it. The lessons build on each other, walking you through a step-by-step process of creating a simple, real-world iOS app.
As you make your way through the lessons and build the app, you’ll learn about concepts in iOS app development, gain a deeper understanding of the Swift programming language, and familiarize yourself with the many valuable features of Xcode, Apple’s integrated development environment (IDE).
Prerequisites
In these lessons, it is assumed that you are familiar with the Swift programming language. You do not need to be a Swift master to complete the lessons, but you will get more out of the lessons if you can comfortably read and understand Swift code.
![Less Less](/uploads/1/3/4/2/134213911/921925597.jpeg)
If you are not yet comfortable with Swift, complete the Learn to Code exercises in the Swift Playgrounds app. Alternatively, you can work through A Swift Tour from The Swift Programming Language (Swift 3). Both give you a solid foundation in the Swift programming language.
About the Lessons
In these lessons, you’ll be building a simple meal-tracking app called FoodTracker. This app shows a list of meals, including a meal name, rating, and photo. A user can add, remove, or edit a meal. To add a new meal or edit an existing one, users navigate to a different screen where they can specify a name, rating, and photo for a particular meal.
The lessons are each accompanied by an Xcode project file that shows an example of how your code and interface should look at the end of the lesson. After you go through a lesson, you can download the project and check your work against it.
If you need to refer to the concepts you’ve learned throughout the lessons, use the glossary to refresh your memory. Glossary terms are linked throughout the lessons.
Get the Tools
To develop iOS apps using the latest technologies described in these lessons, you need a Mac computer (macOS 10.11.5 or later) running the latest version of Xcode. Xcode includes all the features you need to design, develop, and debug an app. Xcode also contains the iOS SDK, which extends Xcode to include the tools, compilers, and frameworks you need specifically for iOS development.
Download the latest version of Xcode on your Mac free from the App Store.
To download the latest version of Xcode
- Open the App Store app on your Mac (by default it’s in the Dock). How to download apps from google play to mac.
- In the search field in the top-right corner, type
Xcode
and press the Return key. How to install crack app on mac sierra.The Xcode app shows up as the first search result. - Click Get and then click Install App.
- Enter your Apple ID and password when prompted.Xcode is downloaded into your
/Applications
directory.
![Make Make](/uploads/1/3/4/2/134213911/145507394.png)
Important
The lessons were written using Xcode 8.1, iOS SDK 10, and Swift 3. Try to use these versions while working on the tutorials. If you are using a different version, your screen may look different than what is shown in the screenshots. You may also need to make changes to your code to get it to compile.
Let’s get started!
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Check battery usage
To see an overview of your battery level and activity for the last 24 hours and up to the last 10 days, go to Settings > Battery.
When you tap one of the columns on your screen, you can see which apps contributed to your battery usage during that time period, and the proportion of battery used for the app.
To see how long each app was in use on screen or in the background, tap Show Activity. Under each app, you might see these usage types:
- Background Activity means that your battery was used while the app was doing something in the background.
- Audio means that apps play audio while running in the background.
- No Cell Coverage and Low Signal means that your device is searching for a signal or being used with a low signal.
- Backup & Restore indicates that your device has been backing up to iCloud or restoring from an iCloud backup.
- Connected to Charger means the app was used only when your device was charging.
You can also see when your device was last connected to a charger and the last charge level.
Adjust settings to improve battery life
While viewing your battery usage, you might get a suggestion like Enable Auto-Brightness or Adjust Display Brightness. This is because the software determined that changing these settings could improve your battery life.
Learn more about maximizing the battery performance and lifespan of your iPhone, iPad, or iPod touch.
Use Low Power Mode
If you want to extend the battery life on your iPhone, turn on Low Power Mode. This reduces power consumption until you turn it off or charge your iPhone to 80%. When Low Power Mode is on, certain settings and features like app updates, downloads of new TV shows or podcast episodes, mail fetch, and some visual effects such as True Tone are reduced or disabled.
Learn more about Low Power Mode.