React Native支付宝支付（安卓）

文档

接入流程文档
安卓集成文档
DEMO&SDK

https://www.jianshu.com/p/ae2c2e5bc374 - 参考

步骤

1、目前 SDK 已发布到 Maven Central，开发者可使用 gradle 编译、更新支付宝支付 SDK。
在 android/app/build.gradle 文件中，需添加如下依赖：

dependencies {
  ...
  api 'com.alipay.sdk:alipaysdk-android:+@aar'  //加这个
  ...
}

2、在android/app/src/main/AndroidMainifest.xml中添加以下权限

    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
    <uses-permission android:name="android.permission.INTERNET" />

3、在android/app/src/main/java/com.xxxxx下面创建alipay文件夹(xxxxx是你的包名)，并在alipay文件夹下新建PayModule.java和PayPackage.java两个文件。
4、PayModule.java内容：

package com.xxxxx.alipay;  //xxxxx是包名

import com.alipay.sdk.app.PayTask;
import com.alipay.sdk.app.EnvUtils;
import com.facebook.react.bridge.Arguments;
import com.facebook.react.bridge.Callback;
import com.facebook.react.bridge.ReactApplicationContext;
import com.facebook.react.bridge.ReactContextBaseJavaModule;
import com.facebook.react.bridge.ReactMethod;
import com.facebook.react.bridge.ReadableMap;
import com.facebook.react.bridge.WritableMap;

import java.util.Map;

public class PayModule extends ReactContextBaseJavaModule {

    private final ReactApplicationContext reactContext;

    public PayModule(ReactApplicationContext reactContext) {
        super(reactContext);
        this.reactContext = reactContext;
    }
    @Override
    public String getName() {
        return "PayModule";
    }

    @ReactMethod
    public void setAlipayScheme(String scheme){

    }

    @ReactMethod
    public void setAlipaySandbox(Boolean isSandbox) {
        if (isSandbox) {
            EnvUtils.setEnv(EnvUtils.EnvEnum.SANDBOX);
        } else {
            EnvUtils.setEnv(EnvUtils.EnvEnum.ONLINE);
        }
    }

    @ReactMethod
    public void alipay(final String orderInfo, final Callback promise) {

        Runnable payRunnable = new Runnable() {
            @Override
            public void run() {
                PayTask alipay = new PayTask(getCurrentActivity());
                Map<String, String> result = alipay.payV2(orderInfo, true);
                WritableMap map = Arguments.createMap();
                map.putString("memo", result.get("memo"));
                map.putString("result", result.get("result"));
                map.putString("resultStatus", result.get("resultStatus"));
                promise.invoke(map);
            }
        };
        // 必须异步调用
        Thread payThread = new Thread(payRunnable);
        payThread.start();
    }
}

5、PayPackage.java内容：

package com.xxxxx.alipay;  //xxxxx是包名

import com.facebook.react.ReactPackage;
import com.facebook.react.bridge.JavaScriptModule;
import com.facebook.react.bridge.NativeModule;
import com.facebook.react.bridge.ReactApplicationContext;
import com.facebook.react.uimanager.ViewManager;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

public class PayPackage implements ReactPackage {
    @Override
    public List<NativeModule> createNativeModules(ReactApplicationContext reactContext) {
        List<NativeModule> modules = new ArrayList<>();
        modules.add(new PayModule(reactContext));
        return modules;
    }

    // 早期版本的RN如果有报错取消这个注释即可
    // @override
    public List<Class<? extends JavaScriptModule>> createJSModules() {
        return Collections.emptyList();
    }

    @Override
    public List<ViewManager> createViewManagers(ReactApplicationContext reactContext) {
        return Collections.emptyList();
    }
}

6、在android/app/src/main/java/com/xxxxx/MainApplication.java文件里添加：

import com.xxxxx.alipay.PayPackage;   //加这个
public class MainApplication extends Application implements ReactApplication {
   ...
        protected 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());
          packages.add(new PayPackage());   //加这个
          return packages;
        }

      ...

7、封装及引用模块
封装Alipay.ts

import { NativeModules } from 'react-native';
export default NativeModules.PayModule;

引用：

import PayModule from '@/module/Alipay';

...
/**
  * 唤起支付宝app支付
  * @param {*} payStr 为后端接口返回的支付参数
  */
export function aliPay (orderInfo:string) {
  return new Promise ((resolve, reject) => {
    PayModule.alipay(orderInfo, res => {
      console.log('alipay::', res)
        const { resultStatus } = res;
        const resObj:any = {
            '6001': '支付取消',
            '6002': '网络连接出错',
            '4000': '支付失败',
            '5000': '重复请求'
        };
        if (resultStatus === '9000') {
            // 支付成功处理
            resolve(true)
        } else {
            // 支付失败处理
            showToast(resObj[resultStatus])
            reject(false)
        }
    });
  })
}
...

文档里有个测试的orderInfo：

app_id=2015052600090779&biz_content=%7B%22timeout_express%22%3A%2230m%22%2C%22seller_id%22%3A%22%22%2C%22product_code%22%3A%22QUICK_MSECURITY_PAY%22%2C%22total_amount%22%3A%220.02%22%2C%22subject%22%3A%221%22%2C%22body%22%3A%22%E6%88%91%E6%98%AF%E6%B5%8B%E8%AF%95%E6%95%B0%E6%8D%AE%22%2C%22out_trade_no%22%3A%22314VYGIAGG7ZOYY%22%7D&charset=utf-8&method=alipay.trade.app.pay&sign_type=RSA2&timestamp=2016-08-15%2012%3A12%3A15&version=1.0&sign=MsbylYkCzlfYLy9PeRwUUIg9nZPeN9SfXPNavUCroGKR5Kqvx0nEnd3eRmKxJuthNUx4ERCXe552EV9PfwexqW%2B1wbKOdYtDIb4%2B7PL3Pc94RZL0zKaWcaY3tSL89%2FuAVUsQuFqEJdhIukuKygrXucvejOUgTCfoUdwTi7z%2BZzQ%3D

可以用这个测试。