React-native run-ios For an Android build, make sure you have started your Android virtual device (AVD), and then run this command: Terminal. React-native run-android It will take a short while for everything to get up and running, after which you should see something like this: The city list home screen on iOS and Android. Let's now set up an Android device to run our React Native projects. Go ahead and plug in your device via USB to your development machine. Next, check the manufacturer code by using lsusb (on mac, you must first install lsusb). Lsusb should output something like this.

Environment Building Based on Windows 10

Install Java

JDK is better than 1.8 Java JDK download connection

And configure system environment variables
Configuration method
Win10 JAVA Environment Configuration

The sign of successful configuration is that both Java and javac input under CMD have corresponding prompts

Install SDK

Attention is a system environment variable
Note here that the Android environment variable ANDROID_HOME is configured. If not, it is possible to indicate that the SDK cannot be found when packaging.

PATH in win10 does not recognize% ANDROID_HOME% so it is configured as the previous path

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Install Android Studio

And configure the corresponding package management
Enter SDK manager (File => settings => Appearance & Behavior => System Settings => Android SDK)

SDK Platforms: Check Android 678 for general 6
SDK Tolls: Check Android SDK Build-Tools Android Emulator Android SDK Platform-Tools Android SDK Tools Documentation for Android SDK Intel x86 Emulator Support Repository Android Support Respository and Google Repository

Install node

A brief introduction to the process

Install Git

A brief introduction to the process

Initialize projects using react-native-cli

Manage installation of global or local cli using NPM packages or yarn packages

Create RN projects

RN Main Command

Enter for the first time possible error reporting, Ctrl + M or shake the development environment, set Debug server host & port for device, your IP: 8010, please make sure that the mobile phone and computer are in the same intranet segment.

If Welcome to React Native appears, it means success! Develop RN

Probable Problems in First Development and Debugging

When embedding native APP projects, use Device Support x86 (armeabi-v7a, but APK only supports armabi)

The reason for this is the build. gradle file configuration problem.
Find the corresponding Module: build. gradle file under your APP

Modify configuration

Change to

Here’s another configuration to see the prompt increase

When using Android Studio Virtual Machine, it may appear in the case of Intel integrated graphics card (prompting GPU error, virtual machine can not start)

[GPU Driver Issue. some users have experienced emulator stability issues with this driver version]

Processing method, to the virtual machine installation directory, through the command line to force start

• 1. Find the SDK Emulator folder (default location)C:UsersusernameAppDataLocalAndroidSdkemulator)
• 2. In the blankCtrl + Shift + Right mouse buttonOpen the command window
• 3. Inputemulator -list-avds(Displays the virtual machine you created)
• 4. InputOne of the virtual machines listed above in emulator-avd - GPU host(for the forced-choice hardware gpu)

Android Studio turns on hot updates and tinker error reporting when debugging with virtual machines

Error:A problem occurred configuring project ‘:app’. Failed to notify project evaluation listener. Tinker does not support instant run mode, please trigger build by assembleDebug or disable instant run in ‘File->Settings…’. can’t find tinkerProcessDebugManifest, you must init tinker plugin first!

Tinker does not support instant run mode, you need to find File – > Settings – > Build, Execution, Deployment – > instant run and close, daily debugging can be Tinker closed to use instant run.

Specific View

It may be wrong to open a project without using Android Studio and use other IDEs directly (React Native Android build failed. SDK location not found)

SDK location not found. Define location with sdk.dir in the local.properties file or with an ANDROID_HOME environment variable.

• 1. Use Android Studio to open an Android file directory once, and the first time it will be loaded for a period of time.
• 2. Manually create local. properties
• • Operating method*
  • 1. Find the Android folder under the react-native project
  • 2. Create a local. properties file in this folder
  • 3. Write in the local. properties filesdk.dir = /Users/USERNAME/Library/Android/sdk

Red screen error or program crash (Can not get BatchedBridge, make sure your bundle is packaged properly)

There are many reasons online because offline packages are not successful (bundlejs are not generated)
This way of development is to make an offline package every react-native and then manually place it under the original app for reference development.
This method clicks on the link to view

Another is automatic hot update development, which needs to cooperate with the native side, because an APP may nest multiple RN projects, so our existing approach here is
App wrote a public method dynamic and more RN routing protocol to take jsbundle package name, but in RNstartThe default name of the command isindex.androidandindex.iosSo we need to make dynamic judgments in common methods.

At present, we are facing the problem that the public method written by APP in the past does not automatically judge the environment and needs to be changed manually.CommonRNPage.javaThe method annotation part of the code for injecting bundle package name into this file