Android判断网络链接状态

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获取网络信息需要在AndroidManifest.xml文件中加入相应的权限。<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

判断是否有网络连接

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;   }

判断WIFI网络是否可用

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;   }

判断MOBILE网络是否可用

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;   }

获取当前网络连接的类型信息

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;   }

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