判断网络连接类型

ConnectivityManager connMgr = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo activeInfo = connMgr.getActiveNetworkInfo();
if (activeInfo != null && activeInfo.isConnected()) {
　　wifiConnected = activeInfo.getType() == ConnectivityManager.TYPE_WIFI;
　　mobileConnected = activeInfo.getType() == ConnectivityManager.TYPE_MOBILE;
　　if(wifiConnected) {
　　　　Log.i(TAG, getString(R.string.wifi_connection));
　　} else if (mobileConnected){
　　　　Log.i(TAG, getString(R.string.mobile_connection));
　　}
} else {
　　Log.i(TAG, getString(R.string.no_wifi_or_mobile));
}

BasicNetworking