Macos Android Emulator Slow
The very first step to start development in React-Native is to install the right tools to setup the environment correctly. I’m working on MacOS Catalina and I already have Xcode 11 installed on my machine which is one of the pre-requisites to run the iOS App.
Install the following dependencies for React-Native:
NodeJS: https://nodejs.org/en/download/
The recommended way to install Node is using Homebrew from your Terminal:
Watchman: In react-native, Watchman watches the source code for any changes and rebuilds them.
Troubleshooting and known issues for Android Emulator and system images Checking for adequate disk space. To avoid crashes and hangs caused by not having enough free disk space, the emulator. Antivirus software. Because many security and antivirus software packages work by monitoring every read. Emulator is extremely slow. May 9, 2019 — I've spoken in the past about how Virtual Apps and Virtual Desktop deployments are performance sensitive. You see, the performance of such. Nov 18, 2013 — The Android Emulator is very slow. The main reason is because it is emulating the ARM CPU & GPU, unlike the iOS Simulator, which runs x86. Hello, I recently installed Mojave Hackintosh on my Desktop computer. Everything seemed fine until I run an XCode project, the simulator is impossible to use, and it slows down the entire computer. The same thing happens with the Android Emulator, the one that comes with Android Studio. An Android or iOS application or a browser gets emulated by an emulator on an operating system considered as a defined one, such as that of Mac and Windows. What it does is that it establishes virtual hardware conditions of that of an Android or iOS device. Emulator is extremely slow. May 9, 2019 — I've spoken in the past about how Virtual Apps and Virtual Desktop deployments are performance sensitive. You see, the performance of such. Nov 18, 2013 — The Android Emulator is very slow. The main reason is because it is emulating the ARM CPU & GPU, unlike the iOS Simulator, which runs x86.
Install XCode from App Store.
Cocoapods: This is the Dependency Manager for iOS & Mac projects.
This requires you to enter system password.
Android Studio Emulator Not Responding
Install Visual Studio Code for Mac from here. You might face issues on Mac OS Catalina to run VS Code due to Notarization requirements. You can check out this post for more details.
Create the folder inside say your Documents folder on your Mac as below:
Open VS Code and open New Terminal and type the following command to create a new React-Native App:
Come back to the MyApp folder and run the below command to run your App in the iOS simulator:
This will install and launch the App in your iOS simulator. The first time might be very slow. It might be helpful to launch your simulator beforehand.
Mac Os Android Emulator Slow Release
Running on Android:
Install the Android Studio from here, which will install the Android SDK and the required emulator. I’m using the Android 10 emulator for Pixel XL.
Open the MyApp folder in VS Code to make further changes.
Issues
Running the Android App causes issues while launching the Emulator. The error message is: React Native adb reverse ENOENT
Starting with macOS Catalina, your Mac uses zsh as the default login shell and interactive shell. You can make zsh the default in earlier versions of macOS as well.
So on your Mac:
1 – Open your .zshrc file:
2 – if .zshrc file doesn’t exist, you need to create one & open again(Step 1)
3 – Add this to your .zshrc file
4 – Save and close
5 – Compile your changes
& make sure to restart your terminal.
Run the command in the Terminal and you’ll see something like below if everything is fine:
Android Debug Bridge version 1.0.41
Version 30.0.0-6374843
Installed as /Users/<username>/Library/Android/sdk/platform-tools/adb
You can also run the code in your VS Code Terminal and see the same output.
The path to Android SDK is available in the Configure button -> SDK Manager (at the bottom right) when you launch Android Studio.