React Native 学习研究

1.运行android

npm run android 或者 react-native run-android

2.运行ios

npm run ios 或者 react-native run-ios

3.功能实现

Tab实现

• 固定Tab

• 可滚动Tab

抽屉侧边栏

View Code

下拉刷新

View Code

分页加载

View Code

动态更新

View Code

React Native Android热更新实现

查看截图

4.adb文件下载和上传

adb pull 就是从真机上拷贝文件到您的PC

adb pull /sdcard/react-native-update.mp4   /Users/sky/dev/react/native/SmartReactNativeApp/images

adb push 就是从PC上复制一份文件到您的真机上

adb push /Users/sky/dev/react/native/SmartReactNativeApp/images/home.png  /sdcard

5.真机调试

• bundle服务连不上,命令行执行以下命令

adb reverse tcp:8081 tcp:8081

• 8081端口占用:

lsof -n -i4TCP:8081
kill -9 pid

6.签名密钥

keytool -genkey -v -keystore my-release-key.keystore -alias my-key-alias -keyalg RSA -keysize 2048 -validity 10000

7.jsbundle生成到asset目录

react-native bundle --entry-file ./index.android.js  --bundle-output ./app/src/main/assets/index.android.bundle --platform android --assets-dest ./app/src/main/res/ --dev false

curl "http://localhost:8081/debug.android.bundle?platform=android" -o  "./app/src/main/assets/debug.android.bundle"

8.adb 截屏和视频录播

adb shell screenrecord /sdcard/react-native-update.mp4

http://note.rpsh.net/posts/2015/04/21/mac-osx-ffmpeg-mp4-gif-convert/

ffmpeg -i  /Users/sky/dev/react/native/SmartReactNativeApp/images/react-native-update.mp4 /Users/sky/dev/react/native/SmartReactNativeApp/images/react-native-update.gif

从视频中第9秒开始，截取时长为8秒的片段转化为 gif

ffmpeg -t 8  -ss 00:00:09 -i /Users/sky/dev/react/native/SmartReactNativeApp/images/react-native-update.mp4 /Users/sky/dev/react/native/SmartReactNativeApp/images/react-native-update.gif

9.Android 系列学习总结

1. React Native, Hybrid App, H5 简单对比分析

2. React Native Android 自定义插件

3. React Native Android APK包大小分析

4. React Native Android源码解读和交互原理分析

5. React Native Android代码执行跟踪和调试

6. React Native Android热更新实现