由于路由管控系统的建立，实时动态黑洞路由已成为最有效的封锁手段，TCP连接重置和DNS污染成为次要手段，利用漏洞的穿墙方法已不再具有普遍意义。对此应对方法是多样化协议的VPN来抵抗识别。这里介绍一种太简单、有时很朴素的“穷人VPN”。
朴素VPN只需要一次内核配置（Linux内核），即可永久稳定运行，不需要任何用户态守护进程。所有流量转换和加密全部由内核完成，原生性能，开销几乎没有。静态配置，避免动态握手和参数协商产生指纹特征导致被识别。并且支持NAT，移动的内网用户可以使用此方法。支持广泛，基于L2TPv3标准，Linux内核3.2+都有支持，其他操作系统原则上也能支持。但有两个局限：需要root权限；一个隧道只支持一个用户。
朴素VPN利用UDP封装的静态L2TP隧道实现VPN，内核XFRM实现静态IPsec。实际上IP-in-IP隧道即可实现VPN，但是这种协议无法穿越NAT，因此必须利用UDP封装。内核3.18将支持Foo-over-UDP，在UDP里面直接封装IP，与静态的L2TP-over-UDP很类似。
| <!-- You can change the parent around to whatever you normally use --> | |
| <style name="DebugColors" parent="Theme.AppCompat"> | |
| <!-- System colors --> | |
| <item name="android:windowBackground">@color/__debugWindowBackground</item> | |
| <item name="android:colorPressedHighlight">#FF4400</item> | |
| <item name="android:colorLongPressedHighlight">#FF0044</item> | |
| <item name="android:colorFocusedHighlight">#44FF00</item> | |
| <item name="android:colorActivatedHighlight">#00FF44</item> |
| /* | |
| * The MIT License (MIT) | |
| * | |
| * Copyright (c) 2014 Matthieu Harlé | |
| * | |
| * Permission is hereby granted, free of charge, to any person obtaining a copy | |
| * of this software and associated documentation files (the "Software"), to deal | |
| * in the Software without restriction, including without limitation the rights | |
| * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
| * copies of the Software, and to permit persons to whom the Software is |
| /*** | |
| * Android L (lollipop, API 21) introduced a new problem when trying to invoke implicit intent, | |
| * "java.lang.IllegalArgumentException: Service Intent must be explicit" | |
| * | |
| * If you are using an implicit intent, and know only 1 target would answer this intent, | |
| * This method will help you turn the implicit intent into the explicit form. | |
| * | |
| * Inspired from SO answer: http://stackoverflow.com/a/26318757/1446466 | |
| * @param context | |
| * @param implicitIntent - The original implicit intent |
| import android.graphics.*; | |
| import com.squareup.picasso.Transformation; | |
| /** | |
| * Transforms an image into a circle representation. Such as a avatar. | |
| */ | |
| public class CircularTransformation implements Transformation | |
| { | |
| int radius = 10; |
| package com.ryanharter.android.util; | |
| import android.content.Context; | |
| import android.content.SharedPreferences; | |
| /** | |
| * Keeps track of the number of app launches, and days since first launch, and | |
| * provides an easy way to determine whether you should show a rating prompt | |
| * or not. | |
| */ |
| /* | |
| * Copyright (C) 2014 The Android Open Source Project | |
| * | |
| * Licensed under the Apache License, Version 2.0 (the "License"); | |
| * you may not use this file except in compliance with the License. | |
| * You may obtain a copy of the License at | |
| * | |
| * http://www.apache.org/licenses/LICENSE-2.0 | |
| * | |
| * Unless required by applicable law or agreed to in writing, software |
| import android.content.Context; | |
| import android.content.res.TypedArray; | |
| import android.graphics.Canvas; | |
| import android.graphics.drawable.Drawable; | |
| import android.util.AttributeSet; | |
| import android.widget.ImageView; | |
| public class ForegroundImageView extends ImageView { | |
| private Drawable foreground; |
| def toCamelCase(String string) { | |
| String result = "" | |
| string.findAll("[^\\W]+") { String word -> | |
| result += word.capitalize() | |
| } | |
| return result | |
| } | |
| afterEvaluate { project -> | |
| Configuration runtimeConfiguration = project.configurations.getByName('compile') |
| public class MainActivity extends Activity { | |
| @Override | |
| protected void onCreate(Bundle savedInstanceState) { | |
| super.onCreate(savedInstanceState); | |
| setContentView(R.layout.layoutfab); | |
| //Outline | |
| int size = getResources().getDimensionPixelSize(R.dimen.fab_size); | |
| Outline outline = new Outline(); |