android判断用户网络类型
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public?class?NetTestActivity?extends?Activity?{ ????????private?static?final?int?CMNET?=?3; ??????private?static?final?int?CMWAP?=?2; ??????private?static?final?int?WIFI?=?1; ????????@Override ??????public?void?onCreate(Bundle?savedInstanceState)?{ ??????????super.onCreate(savedInstanceState); ??????????setContentView(R.layout.main); ??????????getAPNType(this); ??????} ????????/** ???????*?获取当前的网络状态?-1：没有网络?1：WIFI网络2：wap网络3：net网络 ???????*? ???????*?@param?context ???????*?@return ???????*/ ??????public?static?int?getAPNType(Context?context)?{ ??????????int?netType?=?-1; ??????????ConnectivityManager?connMgr?=?(ConnectivityManager)?context ??????????????????.getSystemService(Context.CONNECTIVITY_SERVICE); ??????????NetworkInfo?networkInfo?=?connMgr.getActiveNetworkInfo(); ????????????if?(networkInfo?==?null)?{ ??????????????return?netType; ??????????} ??????????int?nType?=?networkInfo.getType(); ??????????System.out.println("networkInfo.getExtraInfo()?is?"??????????????????+?networkInfo.getExtraInfo()); ??????????if?(nType?==?ConnectivityManager.TYPE_MOBILE)?{ ??????????????if?(networkInfo.getExtraInfo().toLowerCase().equals("cmnet"))?{ ??????????????????netType?=?CMNET; ??????????????}?else?{ ??????????????????netType?=?CMWAP; ??????????????} ??????????}?else?if?(nType?==?ConnectivityManager.TYPE_WIFI)?{ ??????????????netType?=?WIFI; ??????????} ??????????return?netType; ??????} ??}??