gRPC 可以像调用方法一样进行网络请求github地址：https://github.com/grpc/grpc-java使用：1.proto文件放置到 src/main/proto2. module gradle配置plugins {... id 'com.google.protobuf'}android { ...}protobuf { protoc { artifact = 'com.google.protobuf:protoc:3.17.2' }

//okhttpimplementation(“com.squareup.okhttp3:okhttp:4.9.0”) private WebSocketListener socketListener = new WebSocketListener() { //回调监听 @Override public void onClosed(@NotNull WebSocket webSocket, int code, @NotNull String reason) {

android端 spatialite数据库框架官方网址：https://www.gaia-gis.it/fossil/libspatialite/wiki?name=spatialite-android-tutorial官网demo 中的so导入不兼容新Android版本， 报错 spatialite has text relocationshttps://github.com/MarkTsy/spatialite_for_android/tree/master解决了不兼容问题， 可作为modu

org.eclipse.paho » mqtt-clienthttps://mvnrepository.com/artifact/org.eclipse.paho/mqtt-client String topic = "test/mqtt"; String content = "Hello mqtt!"; int publish_qos = 2; int subscribe_qos = 0; String broker = "tcp://xxx.xxx.xxx:1883"