android判断当前网络状态及跳转到设置界面

今天，想做这个跳转到网络设置界面， 刚开始用

intent = new Intent(Settings.ACTION_WIRELESS_SETTINGS);

不料老是出现settings.WirelessSettings找不到（就是没法提示出来，显示红色底纹），我后来查了下资料，结果发现跟版本有关，我的是安卓4.3的，所以需要用

                        intent = new Intent(android.provider.Settings.ACTION_WIRELESS_SETTINGS);

 

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// 加权限<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE">      /*  * 判断网络连接是否已开  * true 已打开  false 未打开  * */ public static boolean isConn(Context context){     boolean bisConnFlag=false;     ConnectivityManager conManager = (ConnectivityManager)context.getSystemService(Context.CONNECTIVITY_SERVICE);     NetworkInfo network = conManager.getActiveNetworkInfo();     if(network!=null){         bisConnFlag=conManager.getActiveNetworkInfo().isAvailable();     }     return bisConnFlag; }   /**  * 当判断当前手机没有网络时选择是否打开网络设置  * @param context  */ public static void showNoNetWorkDlg(final Context context) {     AlertDialog.Builder builder = new Builder(context);     builder.setIcon(R.drawable.ic_launcher)         //             .setTitle(R.string.app_name)            //             .setMessage("当前无网络").setPositiveButton("设置", new OnClickListener() {                                   @Override                 public void onClick(DialogInterface dialog, int which) {                     // 跳转到系统的网络设置界面                     Intent intent = null;                     // 先判断当前系统版本                     if(android.os.Build.VERSION.SDK_INT > 10){  // 3.0以上                         intent = new Intent(android.provider.Settings.ACTION_WIRELESS_SETTINGS);                     }else{                         intent = new Intent();                         intent.setClassName("com.android.settings", "com.android.settings.WirelessSettings");                     }                     context.startActivity(intent);                                       }             }).setNegativeButton("知道了", null).show(); }</uses-permission>