监听网络变化无回调 HarmonyOS 鸿蒙Next

如果在单例页面中执行监听demo(页面生效时可直接监听)参考如下：

struct ConnTest {

  netCon : connection.NetConnection = connection.createNetConnection();

  onPageShow(){

    //开启监听事件
    this.netCon.register((error: BusinessError) => {
      console.log(JSON.stringify(error));
    });

    //监听网络是否可用
    this.netCon.on('netAvailable', (data) => {
      console.log("1---- net status netAvailable" + JSON.stringify(data))
    })

    this.netCon.on('netConnectionPropertiesChange', (data) => {
      console.log("1---- net status netConnectionPropertiesChange" + JSON.stringify(data))
      data.connectionProperties.routes[0].destination.address
    })

    this.netCon.on("netLost",(data) => {
      console.log("1---- net lost" + JSON.stringify(data))
    })
  }

  build() {

    Column() {
      Text('message')
    }
    .justifyContent(FlexAlign.Center)
    .height('100%')
    .width('100%')
  }
}

若需修改在EntryAbility文件的生命周期中实现可参考如下：

onCreate(want: Want, launchParam: AbilityConstant.LaunchParam) {

  // MainAbility onCreate, isStageMode: true
  console.log('MainAbility onCreate, isStageMode: ' + this.context.stageMode);
  hilog.info(0x0000, 'testTag', '%{public}s', 'Ability onCreate');
  this.connTest();
}

//网络状态监听
netCon : connection.NetConnection = connection.createNetConnection();

connTest(){
  //开启监听事件
  this.netCon.register((error: BusinessError) => {
    console.log(JSON.stringify(error));
  });

  //监听网络是否可用
  this.netCon.on('netAvailable', (data) => {
    console.log("1---- net status netAvailable" + JSON.stringify(data))
  })

  this.netCon.on('netConnectionPropertiesChange', (data) => {
    console.log("1---- net status netConnectionPropertiesChange" + JSON.stringify(data))
    data.connectionProperties.routes[0].destination.address
  })

  this.netCon.on("netLost",(data) => {
    console.log("1---- net lost" + JSON.stringify(data))
  })
}