云在千峰

判断手机的联网类型:

    public static void checkNetworkType(Context ctx) {
    	ConnectivityManager connectivity = 
        (ConnectivityManager) ctx.getSystemService(Context.CONNECTIVITY_SERVICE);
    	if (connectivity == null) {
            Log.e(Constants.TAG, "获取网络类型失败");
            return;
        } else {
            NetworkInfo info = connectivity.getActiveNetworkInfo();
            if(info == null) {
            	Log.e(Constants.TAG, "获取网络类型失败");
            	return;
            }
            if (info.getType() == ConnectivityManager.TYPE_MOBILE) {
            	TelephonyManager tm = (TelephonyManager)
            	ctx.getSystemService(Context.TELEPHONY_SERVICE);
                int type = tm.getNetworkType();
            	switch (type) {
				case TelephonyManager.NETWORK_TYPE_EDGE:
					Log.d(Constants.TAG, "网络类型为EDGE");
					break;
				case TelephonyManager.NETWORK_TYPE_GPRS:
					Log.d(Constants.TAG, "网络类型为GPRS");
					break;
				case TelephonyManager.NETWORK_TYPE_UMTS:
					Log.d(Constants.TAG, "网络类型为UMTS");
					break;
				case TelephonyManager.NETWORK_TYPE_UNKNOWN:
					Log.d(Constants.TAG, "网络类型未知");
					break;
				}
            } else if (info.getType() == ConnectivityManager.TYPE_WIFI){
            	Log.d(Constants.TAG, "网络类型为WIFI");
            }
        }
    }