首先在AndroidManifest.xml添加權限

<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

1,判斷是否有網絡連接

public 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; }
2.判斷WIFI網絡是否可用

public 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; }
3.判斷MOBILE網絡是否可用

public 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; }
4.判斷網絡類型

//返回值 -1：沒有網絡 1：WIFI網絡2：wap網絡3：net網絡public static int GetNetype(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(); if(nType==ConnectivityManager.TYPE_MOBILE){ if(networkInfo.getExtraInfo().toLowerCase().equals("cmnet")){ netType = 3; } else{ netType = 2; } } else if(nType==ConnectivityManager.TYPE_WIFI){ netType = 1; } return netType; }

總結

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