The IDE, simulator and emulator images and associated SDKs are all quite large. Install Appium Desktop (optional) Note: Make sure you have at least 40GB of free disk space. Install Appium from the terminal (skip if you install Appium Desktop) npm install -g appium.
![]() Appium Emulator Nexus Not Running Install Appium DesktopImagine a tool like Appium Desktop which starts its own emulators and simulators but doesn't want to confuse the user by popping up extra windows. Though rare, running OSX fully headless is possible, in which case it is convenient that simulators can still be run.Desktop tools can also take advantage of this features. Sadly, running headless emulators and simulators will save a little bit of system resources by not running the actual windowed application, but compared to the CPU and memory required to run the device, this is minimal.Headless simulators and emulators should run exactly the same as their graphical counterparts, but I encountered an issue running our usual example app in a headless Android emulator! The issue seems to have something to do with ReactNativeNavigation, but this shows that something is different about Android emulators in headless mode.Headless emulators and simulators are most useful for device farms which run devices on servers which have no graphical window manager in the first place. The only thing we lose when running in headless mode is the ability for a user to manually intervene and manipulate a device during a test session.This style of headless virtual device is a little different from headless browsers, which do not render the UI and therefore enable decreased test times because the costly process of deciding how to lay everything out on the screen is skipped. Download supersu zipWhen running in headless mode, Appium just skips the second step. When Appium starts an iOS simulator normally, it has to start the simulator using the simctl utility, and then it launches Simulator.app. How Does it Work?For iOS simulators, the actual simulator is a separate process from the Simulator.app app. Not specifying the avd results in Appium using the current emulator already running, and of course if it's already running with a UI, the UI will stay visible.IOS has no such issue if you set isHeadless to true, then Appium will shut down any currently running simulators and restart them in headless mode.Unless you instructed Appium to shut down the device afterwards, the headless emulators and simulators will still be running after your session, but you won't see them unless you check via the simctl utility or adb. ![]()
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