01.public String getNetworkClass(Context context) {
02. TelephonyManager mTelephonyManager = (TelephonyManager)
03. context.getSystemService(Context.TELEPHONY_SERVICE);
04. int networkType = mTelephonyManager.getNetworkType();
05. switch (networkType) {
06. case TelephonyManager.NETWORK_TYPE_GPRS:
07. case TelephonyManager.NETWORK_TYPE_EDGE:
08. case TelephonyManager.NETWORK_TYPE_CDMA:
09. case TelephonyManager.NETWORK_TYPE_1xRTT:
10. case TelephonyManager.NETWORK_TYPE_IDEN:
11. return "2G";
12. case TelephonyManager.NETWORK_TYPE_UMTS:
13. case TelephonyManager.NETWORK_TYPE_EVDO_0:
14. case TelephonyManager.NETWORK_TYPE_EVDO_A:
15. case TelephonyManager.NETWORK_TYPE_HSDPA:
16. case TelephonyManager.NETWORK_TYPE_HSUPA:
17. case TelephonyManager.NETWORK_TYPE_HSPA:
18. case TelephonyManager.NETWORK_TYPE_EVDO_B:
19. case TelephonyManager.NETWORK_TYPE_EHRPD:
20. case TelephonyManager.NETWORK_TYPE_HSPAP:
21. return "3G";
22. case TelephonyManager.NETWORK_TYPE_LTE:
23. return "4G";
24. default:
25. return "Unknown";
26. }
27.}
