插件官网

https://www.npmjs.com/package/react-native-wechat-lib/v/3.0.4

安装依赖包（Android和iOS下载插件完成后记得更新依赖，）

npm i react-native-wechat-lib@3.0.4

Android中配置

1.在项目文件夹下面创建文件夹wxapi（如上图）

wxapi/WXEntryActivity.java

package 包名.wxapi;// react-native-wechat-lib support (
import android.app.Activity;
import android.os.Bundle;
import com.wechatlib.WeChatLibModule;public class WXEntryActivity extends Activity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);WeChatLibModule.handleIntent(getIntent());finish();}
}
// )

2.在文件MainApplication.java中如下配置

package 包名;import android.app.Application;
import com.facebook.react.PackageList;
import com.facebook.react.ReactApplication;
import com.facebook.react.ReactNativeHost;
import com.facebook.react.ReactPackage;
import com.facebook.react.defaults.DefaultNewArchitectureEntryPoint;
import com.facebook.react.defaults.DefaultReactNativeHost;
import com.facebook.soloader.SoLoader;
import java.util.List;
// react-native-wechat-lib support (
import com.wechatlib.WeChatLibPackage;
// )public class MainApplication extends Application implements ReactApplication {private final ReactNativeHost mReactNativeHost =new DefaultReactNativeHost(this) {@Overridepublic boolean getUseDeveloperSupport() {return BuildConfig.DEBUG;}@Overrideprotected List<ReactPackage> getPackages() {@SuppressWarnings("UnnecessaryLocalVariable")List<ReactPackage> packages = new PackageList(this).getPackages();// Packages that cannot be autolinked yet can be added manually here, for example:// packages.add(new MyReactNativePackage());// react-native-wechat-lib support (// Packages that cannot be autolinked yet can be added manually here, for example:packages.add(new WeChatLibPackage());// )return packages;}@Overrideprotected String getJSMainModuleName() {return "index";}@Overrideprotected boolean isNewArchEnabled() {return BuildConfig.IS_NEW_ARCHITECTURE_ENABLED;}@Overrideprotected Boolean isHermesEnabled() {return BuildConfig.IS_HERMES_ENABLED;}};@Overridepublic ReactNativeHost getReactNativeHost() {return mReactNativeHost;}@Overridepublic void onCreate() {super.onCreate();SoLoader.init(this, /* native exopackage */ false);if (BuildConfig.IS_NEW_ARCHITECTURE_ENABLED) {// If you opted-in for the New Architecture, we load the native entry point for this app.DefaultNewArchitectureEntryPoint.load();}ReactNativeFlipper.initializeFlipper(this, getReactNativeHost().getReactInstanceManager());}
}

3.在文件AndroidManifest.xml中添加如下配置

<manifest xmlns:android="http://schemas.android.com/apk/res/android"><uses-permission android:name="android.permission.INTERNET" /><uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /><uses-permission android:name="android.permission.ACCESS_WIFI_STATE" /><!-- 相机权限 --><uses-permission android:name="android.permission.CAMERA" /><!-- 如果需要使用麦克风进行视频录制 --><uses-permission android:name="android.permission.RECORD_AUDIO"/><!-- 如果需要使用相机胶卷 --><uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" /><uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /><!-- 地址定位 --><uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" /><uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" /><applicationandroid:name=".MainApplication"android:label="@string/app_name"android:icon="@mipmap/ic_launcher"android:roundIcon="@mipmap/ic_launcher_round"android:allowBackup="false"android:theme="@style/AppTheme"><activityandroid:name=".MainActivity"android:label="@string/app_name"android:configChanges="keyboard|keyboardHidden|orientation|screenLayout|screenSize|smallestScreenSize|uiMode"android:launchMode="singleTask"android:windowSoftInputMode="adjustResize"android:exported="true"><intent-filter><action android:name="android.intent.action.MAIN" /><category android:name="android.intent.category.LAUNCHER" /></intent-filter><intent-filter android:autoVerify="true"><action android:name="android.intent.action.VIEW" /><category android:name="android.intent.category.DEFAULT" /><category android:name="android.intent.category.BROWSABLE" /><dataandroid:host="xxx"android:pathPrefix="/"android:scheme="xxxxx" /></intent-filter></activity><!--  react-native-wechat-lib support ( --><activityandroid:name=".wxapi.WXEntryActivity"android:label="@string/app_name"android:exported="true"android:taskAffinity="包名"android:launchMode="singleTask"/><!-- ) --></application><!--  react-native-wechat-lib support ( --><queries><package android:name="com.tencent.mm" /></queries><!-- ) -->
</manifest>

IOS配置

到微信下载最新sdk，放在上图位置
在Xcode进行环境配置：如图

1.在AppDelegate.h文件添加如下代码：

#import <RCTAppDelegate.h>
#import <UIKit/UIKit.h>
#import "WXApi.h"@interface AppDelegate : RCTAppDelegate<WXApiDelegate>@end

2.在AppDelegate.mm文件添加如下代码：

#import "AppDelegate.h"#import <React/RCTBundleURLProvider.h>
#import <React/RCTLinkingManager.h>@implementation AppDelegate- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{self.moduleName = @"项目名称";// You can add your custom initial props in the dictionary below.// They will be passed down to the ViewController used by React Native.self.initialProps = @{};return [super application:application didFinishLaunchingWithOptions:launchOptions];
}- (NSURL *)sourceURLForBridge:(RCTBridge *)bridge
{
#if DEBUGreturn [[RCTBundleURLProvider sharedSettings] jsBundleURLForBundleRoot:@"index"];
#elsereturn [[NSBundle mainBundle] URLForResource:@"main" withExtension:@"jsbundle"];
#endif
}
//ali
- (BOOL)application:(UIApplication *)application openURL:(NSURL *)url sourceApplication:(NSString *)sourceApplication annotation:(id)annotation
{return [RCTLinkingManager application:application openURL:urlsourceApplication:sourceApplication annotation:annotation];
}- (BOOL)application:(UIApplication *)application openURL:(NSURL *)url options:(NSDictionary<UIApplicationOpenURLOptionsKey, id> *)options
{return [RCTLinkingManager application:application openURL:url options:options];
}
//weixin
- (BOOL)application:(UIApplication *)application handleOpenURL:(NSURL *)url {return  [WXApi handleOpenURL:url delegate:self];
}- (BOOL)application:(UIApplication *)applicationcontinueUserActivity:(NSUserActivity *)userActivityrestorationHandler:(void(^)(NSArray<id<UIUserActivityRestoring>> * __nullablerestorableObjects))restorationHandler {// 触发回调方法[RCTLinkingManager application:application continueUserActivity:userActivity restorationHandler:restorationHandler];return [WXApi handleOpenUniversalLink:userActivitydelegate:self];
}@end

3.Info.plist文件

<key>CFBundleURLTypes</key><array><dict><key>CFBundleTypeRole</key><string>Editor</string><key>CFBundleURLName</key><string>alipay</string><key>CFBundleURLSchemes</key><array><string>alipayxxxxx</string></array></dict><dict><key>CFBundleTypeRole</key><string>Editor</string><key>CFBundleURLName</key><string>weixin</string><key>CFBundleURLSchemes</key><array><string>wxxxxxx</string></array></dict></array>
<key>LSApplicationQueriesSchemes</key><array><string>iosamap</string><string>baidumap</string><string>qqmap</string><string>alipay</string><string>weixin</string><string>wechat</string><string>weixinULAPI</string><string>weixinURLParamsAPI</string></array>

在login.jsx页面中使用

import * as WeChat from 'react-native-wechat-lib';//微信授权登录WeChat.sendAuthRequest('snsapi_userinfo', 'wechat_sdk_demo').then(response => {console.warn(response); // 处理授权登录后的结果}).catch(error => {console.warn(error); // 处理授权登录后的结果});useEffect(() => {console.log('[登录]');WeChat.registerApp('wxxxxx','https://xxxxx.com/',);return () => {};}, []);

备注：文档官方文档更加详细