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The simulator allows you to prototype and test builds of your app during the development process. Simulators come as a part of the Xcode tool. It runs on Mac and simulating an iPhone, iPad, Apple TV, or Apple Watch environment. It enables you to simulate apple devices running on current or some legacy OS.
There are a few differences between running an application on a device and on the simulator.
If you want all lists of differences then please refer to the official documentation by navigating to Help > Simulator Help in the simulator menu.
There are 2 ways to access Simulator through Xcode.
To run an application via a simulator, choose an iOS Simulator from Xcode Schema pop-up menu and click on Run.
Xcode provides us a default list of simulators. To view all available simulators follow the below-mentioned steps:
Now, you will see all the list of simulators that your Xcode includes. It also shows those simulators which you have downloaded earlier.
If you want to create a new simulator then follow the below steps:
Uncheck the Show as runtime destination checkbox for the simulator which you have created. This will hide the simulator from the app scheme.
If you want to delete any particular simulator for your Xcode then follow the below-mentioned steps:
If you want to use an older version of the simulator then you can download it from the Components window of Xcode Preference.
You can also create a simulator from the simulator menu. To access the simulator menu Open the simulator in your mac via any of the above-mentioned steps. Now follow the below-mentioned steps:
Now once you create the simulator. You can open the simulator by following the below-mentioned steps:
You can toggle between Dark and Light Mode appearance by following the below-mentioned steps:
If you want to slow down the animation which you have implemented in your application for testing purpose. Follow the below-mentioned steps:
You can capture the current screen of the simulator by following the below-mentioned steps.
iOS sends a warning to the application when the memory usages reach their limit. To create a memory warning follow the below steps:
The simulator provides us an easy way to simulate location. But for this, first, you need to grant location permission to your application.
Follow the below steps to provide a custom location:
The simulator also provides us the different ways for simulating locations which you can see in the above image.
Apple provides us simctl to interact with iOS simulators via Command-Line. You can find the binary at /Applications/Xcode.app/Contents/Developer/usr/bin/simctl and you can use it with xcrun command-line tool. This binary is similar to the adb for Android.
To check all available options of simctl enter the below-mentioned command in the terminal.
If you want to see the list of all available simulators enter the below-mentioned command.
To erase a simulator we need to make sure that the simulator is in a shutdown state.
The CRUD operations for the simulator only work on the basis of UUID / Device name therefore you need to enter UUID with each command.
In addition, you can also boot the simulator with the below-mentionded command.
Similarly, you can also generate simulator logs which can help in determining the activity of the simulator by using the below-mentioned command.
Similarly, you can also generate full application info using its bundle ID.
You can also run the simulator in full-screen mode. Use the below-mentioned command to enable this feature :
You can also record a video of the simulator screen using the xcrun command. In addition, to record a video, run the below-mentioned command
Press control + c to stop recording the video. The video file will be stored at the current directory.
control + c
The below-mentioned command will remove those simulators which are not available to the XCode selected version.
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