RN-Android 应用内部下载、安装apk

import RNFS,{
  downloadFile,
  DownloadDirectoryPath,
  exists,
  unlink
} from 'react-native-fs';
import * as c from '../../common/ScreenUtil';
import PermissionRequest from "../../common/PermissionRequest";
import RNFetchBlob from "rn-fetch-blob";
const android = RNFetchBlob.android;
import {store} from "../../redux/ConfigSotre";
import * as ActionTypes from "../../redux/ActionTypes";

const download = async (url,name)=>{
  let allowed = await PermissionRequest.Permission(PermissionRequest.SDCARD);
  if(allowed){
    let toFile = DownloadDirectoryPath + '/' + name + '.apk'
    let isHas = await exists(toFile)
    if (isHas){
      // 如果包含，则提示去安装
      android.actionViewIntent(toFile, "application/vnd.android.package-archive");
      return
    }
    let res = await downloadFile({
      fromUrl: url,
      toFile,
      background: true,
      progressInterval:500, // 0.5s回调一次进度方法，如果不设置，进度方法会频繁调用，导致下载过程中页面卡死无法操作
      begin: (res) => {
      },
      progress: (res) => {
        let percent = ((res.bytesWritten / res.contentLength) * 100).toFixed(2);
        // 进度存redux，其他页面可以拿到进度进行显示
        store.dispatch({type:ActionTypes.UPDATE_DOWNLOAD_APP_INFO,payload:{appProgress:percent}})
      }
    }).promise
    console.log('下载成功-----',res);
    if (res.statusCode == 200){
      store.dispatch({type:ActionTypes.UPDATE_DOWNLOAD_APP_INFO,payload:{appProgress:0}})

      exists(toFile).then(isHas=>{
        if (isHas){
          // 如果包含，则提示去安装
          android.actionViewIntent(toFile, "application/vnd.android.package-archive");
        }
      })
    }

  }else {
    c.toastshowWarning('请开启SD卡存储权限')
  }
}
export default download