判断网络连接状态的方法

来源：互联网发布：淘宝商城游戏装备编辑：程序博客网时间：2024/05/17 08:45

1.一种比较简单的方法，无论是连接wifi还是网络，都返回true：

private boolean isNetworkAvailable(Context context){

boolean isWifiConnected = false;

boolean isMobileConnected = false;

ConnectivityManager conMgr = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);

NetworkInfo networkInfo = conMgr.getActiveNetworkInfo();

if(networkInfo != null && networkInfo.isConnected()){

isWifiConnected = networkInfo.getType() == ConnectivityManager.TYPE_WIFI;

isMobileConnected = networkInfo.getType() == ConnectivityManager.TYPE_MOBILE;

}

return isWifiConnected || isMobileConnected;

}

2.一种比较详细的方法，即对每个状态作分析：

private final static int ERR_NETWORK_NOT_AVAILABLE = -2;

private final static int ERR_NETWORK_ROAMING_DISABLE = -1;

private final static int OK_NETWORK_MOBILE = 0;

private final static int OK_NETWORK_WIFI = 1;

private final static int OK_NETWORK_ROAMING = 2;

private int isNetworkAvailable(Context context){

ConnectivityManager conMgr = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);

NetworkInfo networkInfo = conMgr.getActiveNetworkInfo();

NetworkInfo mobileNetInfo = conMgr.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);

NetworkInfo wifiNetInfo = conMgr.getNetworkInfo(ConnectivityManager.TYPE_WIFI);

boolean isMobileConnected = mobileNetInfo.isConnected();

boolean isWifiConnected = wifiNetInfo.isConnected();

boolean isNetWorkAvailable = (networkInfo == null) ? false : (networkInfo.isAvailable());

boolean isNetWorkConnected = (networkInfo == null) ? false : (networkInfo.isConnected());

boolean isRoaming = mobileNetInfo.isRoaming(); //是否开启漫游

if(isWifiConnected){

return OK_NETWORK_WIFI;

}

if(isMobileConnected){

return isRoaming ? OK_NETWORK_ROAMING : OK_NETWORK_MOBILE;

}

if(isRoaming){

if(!isNetWorkAvailable){

return ERR_NETWORK_NOT_AVAILABLE;

}

return OK_NETWORK_ROAMING;

}

return isNetWorkAvailable ? OK_NETWORK_MOBILE : ERR_NETWORK_NOT_AVAILABLE;

}