You can use getNetCapabilities to check whether the default network is Wi-Fi or cellular.
WIFI indicates a Wi-Fi network, and CELLULAR indicates a cellular network. For a cellular network, you can call radio.getSignalInformation to obtain a list of signal strengths of the network with which the SIM card in the specified slot is registered. In the returned array of SignalInformation objects, signalType indicates the network type. The value can be:
Refer to the code snippet below:
import { connection } from '@kit.NetworkKit';
import { BusinessError } from '@kit.BasicServicesKit';
import { radio } from '@kit.TelephonyKit';
@Entry
@Component
struct Index {
build() {
Column() {
Button('Obtain Network Type')
.type(ButtonType.Normal)
.width(200)
.height(200)
.onClick(() => {
connection.getDefaultNet().then((netHandle: connection.NetHandle) => {
if (netHandle.netId == 0) {
// When there is currently no connected network, the obtained netHandler's netid is 0, which belongs to an abnormal scenario.
// Here, some processing mechanisms can be added according to the actual situation.
return;
}
// Obtain the capability information of the network corresponding to netHandle
connection.getNetCapabilities(netHandle, (error: BusinessError, data: connection.NetCapabilities) => {
if (error) {
console.error(`Failed to get net capabilities. Code:${error.code}, message:${error.message}`);
return;
}
console.info("Succeeded to get data: " + JSON.stringify(data));
if (data.bearerTypes[0] == 1) {
// console.info("Wi Fi network");
} else if (data.bearerTypes[0] == 0) {
// console.info("Cellular Network");
let slotId: number = 0; // Slot ID, -0: Slot 1, -1: Slot 2
radio.getSignalInformation(slotId, (err: BusinessError, data: Array<radio.SignalInformation>) => {
if (err) {
console.error(`getSignalInformation failed, callback: err->${JSON.stringify(err)}`);
return;
}
console.info(`getSignalInformation success, callback: data->${JSON.stringify(data)}`);
// Return an array of SignalInformation objects, where the returned signalType represents the network type NetworkType
});
}
})
}).catch((error: BusinessError) => {
console.error('error: ' + JSON.stringify(error));
});
})
}
.width('100%')
.height('100%')
.alignItems(HorizontalAlign.Center)
.justifyContent(FlexAlign.Center)
}
}