The emulator is one of the most powerful tools in the Android developer’s arsenal. It gives you the ability to test your Android projects across more devices than you could ever realistically hope to get your hands on. However, the does have one massive flaw, which becomes glaringly obvious the first time you launch it. Better get comfortable, because the emulator takes a long time to load.

Dear Friends, ​ when I create a Virtual Device with android Studio, with api level 27 or 28, the resulting emulator is so slow that it is. Mac, PC, Linux? I have not had issues on my MacBook at work. Have not done coding at.

A seriously long time. Despite this drawback, the emulator is still the best way to test how your app translates across multiple hardware and software configurations—so there’s no getting away from the fact: sooner or later you’re going to have to boot up the emulator.

The emulator has improved in recent years, so it’s nowhere near as slow as it used to be, but testing on the emulator can still be a frustrating experience, particularly if you need to keep switching between multiple (AVDs). The good news is, the emulator doesn’t have to leave you tearing your hair out. In this article, I’m going to share 6 tips and tricks for supercharging the Android SDK’s built-in emulator. Note, since Android Studio is now the recommended development environment for Android, all of these tips are geared towards Android Studio, although some of them will be applicable to users, too. Make use of Android Studio’s ‘Instant Run’ The Android team have recently made some huge improvements to Android Studio, including the addition of. If you’ve ever installed a work-in-progress project on an AVD, made some changes to that project, and then tried to push those changes to the AVD; no doubt you’ve been left tapping your foot while the AVD re-installs and re-launches your project from scratch.

If that sounds familiar, then you’re going to love Instant Run. The first time you hit ‘Run’ or ‘Debug’ with Instant Run enabled, Android Studio launches the emulator, loads your chosen AVD, and pushes your APK normally. However, the next time you make changes to your project, you’ll notice a small, yellow thunderbolt icon appears within the ‘Run’ and ‘Debug’ buttons. Instant Run icon Click either of these buttons and Android Studio will push your updated code or resources to the instance of your app that’s already running in the AVD, without requiring a full reinstall. Instant Run promises to make sitting around and waiting for the emulator to re-install your app a thing of the past. In the best case scenario, your app won’t even need to restart — your code changes will appear in the running instance of your app, as if by magic. However, the way Instant Run applies your updates will vary depending on the nature of those updates; and some updates are easier to apply than others: • Hot Swap: Instant Run can apply incremental code changes without having to relaunch your app or even restart the current Activity.

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Your app continues to run as normal and it simply loads the changes the next time the relevant method is called. This is the fastest type of swap. • Warm Swap: This kind of swap is still very fast, but Instant Run will need to restart the Activity before the changes appear in your app. A warm swap is typically required for changes in resources. • Cold Swap: This swap is a bit slower, as your app is restarted (although not re-installed). A cold swap is required for any structural changes such as adding or removing an annotation, instance field or static method signature, or changing your project’s list of implemented interfaces.