前言

在我們的App進行網絡請求時，經常會遇到斷網辅柴，重連箩溃，數據流量和WIFI變化等情況，那么我們要怎么去判斷當前的情況呢碌嘀？接下來就給大家介紹常用的網絡狀態(tài)判斷方法涣旨。

• 判斷是否有網絡連接
• 判斷WIFI網絡是否可用
• 判斷數據流量是否可用
• 獲取當前網絡連接的類型信息
• 獲取當前的網絡狀態(tài)

判斷

1.判斷是否有網絡連接

public static boolean isNetworkConnected(Context context) {
        if (context != null) {
            ConnectivityManager mConnectivityManager = (ConnectivityManager) context
                    .getSystemService(Context.CONNECTIVITY_SERVICE);
            NetworkInfo mNetworkInfo = mConnectivityManager.getActiveNetworkInfo();
            if (mNetworkInfo != null) {
                return mNetworkInfo.isAvailable();
            }
        }
        return false;
    }

有網時返回true，沒網時返回false

判斷WIFI網絡是否可用

public static boolean isWifiConnected(Context context) {
        if (context != null) {
            ConnectivityManager mConnectivityManager = (ConnectivityManager) context
                    .getSystemService(Context.CONNECTIVITY_SERVICE);
            NetworkInfo mWiFiNetworkInfo = mConnectivityManager
                    .getNetworkInfo(ConnectivityManager.TYPE_WIFI);
            if (mWiFiNetworkInfo != null) {
                return mWiFiNetworkInfo.isAvailable();
            }
        }
        return false;
    }

是WIFI網絡返回true股冗，不是WIFI返回false

判斷數據流量是否可用

public static boolean isMobileConnected(Context context) {
        if (context != null) {
            ConnectivityManager mConnectivityManager = (ConnectivityManager) context
                    .getSystemService(Context.CONNECTIVITY_SERVICE);
            NetworkInfo mMobileNetworkInfo = mConnectivityManager
                    .getNetworkInfo(ConnectivityManager.TYPE_MOBILE);
            if (mMobileNetworkInfo != null) {
                return mMobileNetworkInfo.isAvailable();
            }
        }
        return false;
    }

是數據流量時返回true霹陡，不是返回false

獲取當前網絡連接的類型信息

public static int getConnectedType(Context context) {
        if (context != null) {
            ConnectivityManager mConnectivityManager = (ConnectivityManager) context
                    .getSystemService(Context.CONNECTIVITY_SERVICE);
            NetworkInfo mNetworkInfo = mConnectivityManager.getActiveNetworkInfo();
            if (mNetworkInfo != null && mNetworkInfo.isAvailable()) {
                return mNetworkInfo.getType();
            }
        }
        return -1;
    }

獲取當前的網絡狀態(tài)

沒有網絡0：WIFI網絡1：3G網絡2：2G網絡3

public static int getAPNType(Context context) {
        int netType = 0;
        ConnectivityManager connMgr = (ConnectivityManager) context
                .getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo networkInfo = connMgr.getActiveNetworkInfo();
        if (networkInfo == null) {
            return netType;
        }
        int nType = networkInfo.getType();
        if (nType == ConnectivityManager.TYPE_WIFI) {
            netType = 1;// wifi
        } else if (nType == ConnectivityManager.TYPE_MOBILE) {
            int nSubType = networkInfo.getSubtype();
            TelephonyManager mTelephony = (TelephonyManager) context
                    .getSystemService(Context.TELEPHONY_SERVICE);
            if (nSubType == TelephonyManager.NETWORK_TYPE_UMTS
                    && !mTelephony.isNetworkRoaming()) {
                netType = 2;// 3G
            } else {
                netType = 3;// 2G
            }
        }
        return netType;
    }