如何检测NR网络是NSA类型还是SA类型(使用android API)

Question

我知道Android Q中添加了5G API，我想知道我们是否可以检测到网络是NSA网络还是SA网络。感谢任何人提供的信息。

Answer 1

根据google document的说法，我想判断当前的网络是美国国家安全局还是国家安全局。但是我发现cellConnectionStatus总是0..。我使用的是Galaxy10s 5G和LG v50 5G设备。

val hasPrimaryLteCell = telephonyManager.allCellInfo
        .filterIsInstance(CellInfoLte::class.java)
        .any {
            it.cellConnectionStatus == CellInfo.CONNECTION_PRIMARY_SERVING
        }

val hasSecondaryNrCell = telephonyManager.allCellInfo
        .filterIsInstance(CellInfoNr::class.java)
        .any {
            it.cellConnectionStatus == CellInfo.CONNECTION_SECONDARY_SERVING
        }

val isIn5GNonStandaloneMode = hasPrimaryLteCell && hasSecondaryNrCell

Answer 2

我用下面的类来完成这个任务：

public class CustomPhoneStateListener extends PhoneStateListener {

Context context;

CustomPhoneStateListener(Context c) {
    this.context = c;
}

@Override
public void onDisplayInfoChanged(@NonNull TelephonyDisplayInfo telephonyDisplayInfo) {
    if (ActivityCompat.checkSelfPermission(context, android.Manifest.permission.READ_PHONE_STATE) != PackageManager.PERMISSION_GRANTED) {
    } else {
        super.onDisplayInfoChanged(telephonyDisplayInfo);
        if (telephonyDisplayInfo.getOverrideNetworkType() == TelephonyDisplayInfo.OVERRIDE_NETWORK_TYPE_NR_NSA) {
            Log.w(TAG,"5G_NSA");
        }
        if (telephonyDisplayInfo.getOverrideNetworkType() == TelephonyDisplayInfo.OVERRIDE_NETWORK_TYPE_NR_NSA_MMWAVE) {
            Log.w(TAG, "5G_NSA_MMWAVE");
        }
    }

}

}

然后用下面的代码调用那个类：

telephonyManager.listen(new CustomPhoneStateListener(c),PhoneStateListener.LISTEN_DISPLAY_INFO_CHANGED);