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#Simulator ios for mac how to
#Simulator ios for mac series

The talk ends with an overview of Metal being available to the simulator and reasons why it is awesome, for us we will see all the places where we use it (a.k.a.

$ xcrun simctl delete unavailable removes all simulators that are not available any longer (old Xcode installs).e.g: $ xcrun simctl launch -console-pty booted -MyDefaultKey YES launches the app, connect the logs to the terminal, writes the usersDefault value true for key “MyDefaultKey”.$ xcrun simctl launch launches the app.$ xcrun simctl diagnose captures logs and states useful especially on CI when a test fails.$ xcrun simctl spawn lets you launch and change the simulator behavior (logs, inject user defaults.).

#Simulator ios for mac series

$ xcrun simctl create "Test Watch" "Apple Watch Series 4 - 44mm" watchOS6.0

$ xcrun simctl create creates a new device.

$ xcrun simctl list shows installed devices and their statuses.

The talk then goes through an overview of the xcrun simctl command line: You can then target a single simulator or to all the simulator at once. The most common way is just drag and drop, however you can also use the share sheet:

Build/run to new Simulator (the new simulato will show as a build target in old Xcode).

Leave Simulator.app open while closing new Xcode.

Launch new Xcode and boot its new iOS Simulator.

Interesting bits: Simulator window size Run new iOS simulators with old Xcode:

The talk continues with different tips and tricks on what you can do in the simulator. Thread Sanitizer supported (even on platforms that don’t support them natively).Simulates case-sensitive filesystem (most platforms are case-insensitive, but this adds a nice extra safety net).Different core counts, different threading behaviors.

Memory and CPU limits are not simulated (you get the memory and cpus of your Mac machine).

From libSystem and up: built for iOS, watchOS, or tvOS Uses iOS, watchOS, or tvOS ABI built natively for x86 (not an emulator).

Same filesystem as macOS but separate $HOME.

They have separate launchd, separate daemons, separate darwin notifications, separate URL sessions, and separate mach bootstrap.

Apple simulators (iOS, watchOS, and tvOS) are completely separate user spaces that run on top of the macOS kernel.

#Simulator ios for mac how to

Learn about native GPU acceleration in Simulator via Metal, and how to optimize your Metal code to take advantage of it. Find out how Simulator works, discover features you might not know exist, and get a tour of the command-line interface to Simulator for automation. Description: Join us for a deep dive into the world of Simulator.