此文章轉自:http://johnson008.blog.51cto.com/4000361/729387
public class EX01_CheckApnTypeActivity extends Activity
{
/** Called when the activity is
first created. */
public static final String
CTWAP = "ctwap";
public static final String
CMWAP = "cmwap";
public static final String
WAP_3G = "3gwap";
public static final String
UNIWAP = "uniwap";
public static final int TYPE_NET_WORK_DISABLED
= 0;// 網絡不可用
public static final int TYPE_CM_CU_WAP
= 4;// 移動聯通wap10.0.0.172
public static final int TYPE_CT_WAP
= 5;// 電信wap 10.0.0.200
public static final int TYPE_OTHER_NET
= 6;// 電信,移動,聯通,wifi 等net網絡
public static Uri
PREFERRED_APN_URI = Uri
.parse("content://telephony/carriers/preferapn");
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
checkNetworkType(this);
}
/***
* 判斷Network具體類型(聯通移動wap,電信wap,其他net)
*
* */
public static int checkNetworkType(Context mContext) {
try {
final ConnectivityManager connectivityManager = (ConnectivityManager) mContext
.getSystemService(Context.CONNECTIVITY_SERVICE);
final NetworkInfo mobNetInfoActivity = connectivityManager
.getActiveNetworkInfo();
if (mobNetInfoActivity == null || !mobNetInfoActivity.isAvailable()) {
// 注意一:
// NetworkInfo 爲空或者不可以用的時候正常情況應該是當前沒有可用網絡,
// 但是有些電信機器,仍可以正常聯網,
// 所以當成net網絡處理依然嘗試連接網絡。
// (然後在socket中捕捉異常,進行二次判斷與用戶提示)。
Log.i("", "=====================>無網絡");
return TYPE_OTHER_NET;
} else {
// NetworkInfo不爲null開始判斷是網絡類型
int netType = mobNetInfoActivity.getType();
if (netType == ConnectivityManager.TYPE_WIFI) {
// wifi net處理
Log.i("", "=====================>wifi網絡");
return TYPE_OTHER_NET;
} else if (netType == ConnectivityManager.TYPE_MOBILE) {
// 注意二:
// 判斷是否電信wap:
//不要通過getExtraInfo獲取接入點名稱來判斷類型,
// 因爲通過目前電信多種機型測試發現接入點名稱大都爲#777或者null,
// 電信機器wap接入點中要比移動聯通wap接入點多設置一個用戶名和密碼,
// 所以可以通過這個進行判斷!
final Cursor c = mContext.getContentResolver().query(
PREFERRED_APN_URI, null, null, null, null);
if (c != null) {
c.moveToFirst();
final String user = c.getString(c
.getColumnIndex("user"));
if (!TextUtils.isEmpty(user)) {
Log.i("",
"=====================>代理:"
+ c.getString(c
.getColumnIndex("proxy")));
if (user.startsWith(CTWAP)) {
Log.i("", "=====================>電信wap網絡");
return TYPE_CT_WAP;
}
}
}
c.close();
// 注意三:
// 判斷是移動聯通wap:
// 其實還有一種方法通過getString(c.getColumnIndex("proxy")獲取代理ip
//來判斷接入點,10.0.0.172就是移動聯通wap,10.0.0.200就是電信wap,但在
//實際開發中並不是所有機器都能獲取到接入點代理信息,例如魅族M9 (2.2)等...
// 所以採用getExtraInfo獲取接入點名字進行判斷
String netMode = mobNetInfoActivity.getExtraInfo();
Log.i("", "netMode ================== " + netMode);
if (netMode != null) {
// 通過apn名稱判斷是否是聯通和移動wap
netMode=netMode.toLowerCase();
if (netMode.equals(CMWAP) || netMode.equals(WAP_3G)
|| netMode.equals(UNIWAP)) {
Log.i("", "=====================>移動聯通wap網絡");
return TYPE_CM_CU_WAP;
}
}
}
}
} catch (Exception ex) {
ex.printStackTrace();
return TYPE_OTHER_NET;
}
return TYPE_OTHER_NET;
}
}