Android中判断是否连接到网络

方法如下

需要加上    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>权限

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;}