问题描述
我正在使用 React Native 0.61 (CLI)构建Android应用并在此处使用常见的MQTT.js软件包: https://www.npmjs.com/package/mqtt (v.3.0.0)
I am building an Android app using React Native 0.61 (CLI)and use common MQTT.js packages here: https://www.npmjs.com/package/mqtt (v.3.0.0)
这是我的 build.gradle
buildToolsVersion = "28.0.3"
minSdkVersion = 25
compileSdkVersion = 28
targetSdkVersion = 28
supportLibVersion = "28.0.0"
我使用 WebSocket 协议连接到自己的mqtt代理.
I use WebSocket protocol to connect to my own mqtt broker.
在调试模式下，所有功能均可在任何手机上完美运行.但是很奇怪，当我通过命令释放APK ( gradlew assembleRelease (已签名))，它无法连接到Android 9+(两个模拟器)上的代理(Android 8运行良好)
In debug mode, everything works perfectly on any phone. But weird that when I release APK by command (gradlew assembleRelease (signed)), it can not connect to the broker on Android 9+ (both emulator) (Android 8 work well)
编译为本机代码时似乎出现了问题.
It seems there was a problem when compiling to native code.
推荐答案
这可能是因为从Andoird 9开始不允许使用默认的HTTP.您可以在AndroidMainfest.xml中添加以下内容.
it may because the HTTP is default is disallowed since Andoird 9.you can add the following at the AndroidMainfest.xml.
<application
android:usesCleartextTraffic="true"
您还可以使用配置XML.为此，您可以看到此博客
you can also use a config XML. for that you can see this blog
这篇关于React Native MQTT.js在Android 9+上不起作用的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！