网络判断设置界面

一. 首先清单列表中导入权限<!--网络类型判断的权限-->    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"></uses-permission>二.封装一个工具类  NetTypeUtilspublic class NetTypeUtils {    public static boolean isConn(Context context){        //1.得到网络判断的系统服务        ConnectivityManager manager=(ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);        //2.得到网络信息类        NetworkInfo info=manager.getActiveNetworkInfo();        if(info!=null && info.isAvailable()){            return true;        }else{            return false;        }    }    public static  void openNetSettingDg(final Context context){        AlertDialog.Builder builder=new AlertDialog.Builder(context);        builder.setTitle("设置网络");        builder.setMessage("是否要打开网络连接？");        builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {            @Override            public void onClick(DialogInterface dialog, int which) {                //跳转到设置页面                Intent intent;                // 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);            }        });        builder.setNegativeButton("取消",null);        builder.show();    }}