RN 下载 demo

iOS

安装必要的包

• react-native-fs 下载使用
• react-native-permissions 获取权限
• react-native-share 保存下载的内容到手机

修改 podfile 文件

# Resolve react_native_pods.rb with node to allow for hoisting
# require Pod::Executable.execute_command('node', ['-p',
#   'require.resolve(
#     "react-native/scripts/react_native_pods.rb",
#     {paths: [process.argv[1]]},
#   )', __dir__]).strip
def node_require(script)# Resolve script with node to allow for hoistingrequire Pod::Executable.execute_command('node', ['-p',"require.resolve('#{script}',{paths: [process.argv[1]]},)", __dir__]).strip
end# Use it to require both react-native's and this package's scripts:
node_require('react-native/scripts/react_native_pods.rb')
node_require('react-native-permissions/scripts/setup.rb')platform :ios, min_ios_version_supported
prepare_react_native_project!# ⬇️ uncomment the permissions you need
setup_permissions([# 'AppTrackingTransparency',# 'Bluetooth',# 'Calendars',# 'CalendarsWriteOnly',# 'Camera',# 'Contacts',# 'FaceID',# 'LocationAccuracy',# 'LocationAlways',# 'LocationWhenInUse','MediaLibrary',# 'Microphone',# 'Motion',# 'Notifications','PhotoLibrary','PhotoLibraryAddOnly',# 'Reminders',# 'Siri',# 'SpeechRecognition',# 'StoreKit',
])linkage = ENV['USE_FRAMEWORKS']
if linkage != nilPod::UI.puts "Configuring Pod with #{linkage}ally linked Frameworks".greenuse_frameworks! :linkage => linkage.to_sym
endtarget 'AwesomeProject1' doconfig = use_native_modules!use_react_native!(:path => config[:reactNativePath],# An absolute path to your application root.:app_path => "#{Pod::Config.instance.installation_root}/..")target 'AwesomeProject1Tests' doinherit! :complete# Pods for testingendpost_install do |installer|# https://github.com/facebook/react-native/blob/main/packages/react-native/scripts/react_native_pods.rb#L197-L202react_native_post_install(installer,config[:reactNativePath],:mac_catalyst_enabled => false,# :ccache_enabled => true)end
end

修改 ios/AwesomeProject1/info.plist 文件， 补充权限

<dict>// ....<key>NSPhotoLibraryUsageDescription</key><string>使用相册</string><key>NSPhotoLibraryAddUsageDescription</key><string>使用相册 2</string><key>NSAppleMusicUsageDescription</key><string>使用音乐 2</string>
</dict>

在 iOS 目录下执行 pod install

重启项目即可

相关资料

• xcode 缓存

通常在这个目录，如果没有，可以在 xcode -> settings -> Locations -> Derived Data （下面有文件路径）

rm -rf ~/Library/Developer/Xcode/DerivedData

Android

• 修改 android/app/src/main/AndroidManifest.xml 文件， 添加权限

    <!-- Required only if your app needs to access images or photosthat other apps created. --><uses-permission android:name="android.permission.READ_MEDIA_IMAGES" /><!-- Required only if your app needs to access videosthat other apps created. --><uses-permission android:name="android.permission.READ_MEDIA_VIDEO" /><!-- Required only if your app needs to access audio filesthat other apps created. --><uses-permission android:name="android.permission.READ_MEDIA_AUDIO" /><uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" android:maxSdkVersion="32" />

• 申请权限使用 PERMISSIONS.ANDROID.READ_MEDIA_VIDEO 这个是个要注意的点。（READ_EXTERNAL_STORAGE 这个肯定是不能用了）
• 配置后当获取权限完成就能拿到 下载文件路径，否则这个路径是 null ，拿到后直接保存就行了。

相关资料

• react native 权限点位置 node_modules/react-native/PermissionsAndroid/PermissionsAndroid.js
• 所有的权限文档
• demo 代码