Failed to add header to react native webview?

<WebView
              source={{uri:url,
              headers:{"xxx":"content"}}}//
          />

version information is as follows: 

Environment:
  OS: macOS Sierra 10.12.6
  Node: 9.11.1
  Yarn: 1.5.1
  npm: 5.6.0
  Watchman: 4.9.0
  Xcode: Xcode 9.2 Build version 9C40b
  Android Studio: 3.0 AI-171.4443003

Packages: (wanted => installed)
  react: ^16.3.0-alpha.1 => 16.3.1
  react-native: 0.54.2 => 0.54.2

find a solution!

Android ios javascript webview react-native
Mar.13,2021

resolved:
https://github.com/wuyunqiang.

Previous: How does echarts fill the container with diagrams

Next: Linux whereis can't find the file?

css mysql arrays josn react html typescript webpack npm sass R objective-c .net sql-server jquery python-3.x angularjs django angular excel regex iphone ajax linux xml pandas vba spring database wordpress string wpf xcode windows bash postgresql oracle multithreading eclipse list firebase algorithm macos forms image scala visual-studio azure bootstrap spring-boot react-native python-2.7 docker performance function winforms matlab powershell apache dataframe api sqlite numpy rest shell selenium flutter dart maven loops qt swing android-studio csv express file class tensorflow sorting codeigniter perl
MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1b3834b-e645.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b3834b-e645.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
Need Help?