Android error “Could not get BatchedBridge, make sure your b

　　问题1：Android error “Could not get BatchedBridge, make sure your bundle is packaged properly” on start of app

react-native run-android
react-native start --reset-cache

　　

　问题2：How to resolve “EADDRINUSE: address already in use” error（8081端口被占用了）　　

Error: listen EADDRINUSE: address already in use :::8081
    at Server.setupListenHandle [as _listen2] (net.js:1258:14)
    at listenInCluster (net.js:1306:12)
    at Server.listen (net.js:1394:7)

　解决办法：

lsof -i TCP:8081 | grep LISTEN

　会出现如下类似提示：

node    2464 murari   21u  IPv6 4392639      0t0  TCP *:http-alt

　然后执行：

kill -9 2464

　　ok。到此就解决了。