wx.onNetworkStatusChange(function (res) {

console.log(res);

console.log(‘网络状态发生变化’);

if (res.networkType == “wifi”) {

console.log(‘wifi’)

self.connectWifi();

self.onShow();

} else {

console.log(‘no-wifi’)

self.setData({

SSID: ‘’,

BSSID: ‘’

})

self.onShow();

}

切换了网络后两三次，就不再触发onNetworkStatusChange事件，这是为什么？