新技能：用 Python 写一个安卓 APP
<section id="nice" data-tool="mdnice编辑器" data-website="https://www.mdnice.com" style="font-size: 16px; color: rgba(0, 0, 0, 1); padding: 0 10px; line-height: 1.6; word-spacing: 0; letter-spacing: 0; word-wrap: break-word; text-align: left; font-family: "Helvetica Neue", Helvetica, "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif"><blockquote data-tool="mdnice编辑器" style="display: block; font-size: 0.9em; overflow: auto; overflow-scrolling: touch; border-left: 3px solid rgba(255, 0, 0, 1); background: rgba(0, 0, 0, 0.05); color: rgba(106, 115, 125, 1); padding: 8px; margin-bottom: 20px; margin-top: 20px"><p style="padding-top: 8px; padding-bottom: 8px; margin: 0; color: rgba(0, 0, 0, 1); line-height: 26px; font-size: 14px; letter-spacing: 0.2px">作者：youerning原文链接:<code style="font-size: 14px; word-wrap: break-word; padding: 2px 4px; border-radius: 4px; margin: 0 2px; color: rgba(30, 107, 184, 1); background-color: rgba(27, 31, 35, 0.05); font-family: Operator Mono, Consolas, Monaco, Menlo, monospace; word-break: break-all">http://youerning.blog.51cto.com/10513771/1733534</code></p>
</blockquote>
<h3 data-tool="mdnice编辑器" style="margin-top: 30px; margin-bottom: 15px; padding: 0; font-weight: bold; color: rgba(0, 0, 0, 1); font-size: 20px"><span class="prefix" style="display: none"></span><span class="content">前言</span><span class="suffix" style="display: none"></span></h3>
<p data-tool="mdnice编辑器" style="font-size: 16px; padding-top: 8px; padding-bottom: 8px; margin: 0; line-height: 26px; color: rgba(0, 0, 0, 1); letter-spacing: 1px">用 Python 写安卓 APP 肯定不是最好的选择，目前用Java和 kotlin 写的居多，但是肯定也是一个很偷懒的选择，而且实在不想学习 Java，再者，就编程而言已经会的就 Python与Golang(注：Python，Golang水平都一般)，那么久Google了一下Python 写安卓的 APP 的可能性，还真行。</p>
<p data-tool="mdnice编辑器" style="font-size: 16px; padding-top: 8px; padding-bottom: 8px; margin: 0; line-height: 26px; color: rgba(0, 0, 0, 1); letter-spacing: 1px">既然要写个APP，那么总得要有个想法吧。其实想做两个APP来着，一个是自己写着好玩的，一个是关于运维的。关于运维的APP，设计应该如下</p>
<p data-tool="mdnice编辑器" style="font-size: 16px; padding-top: 8px; padding-bottom: 8px; margin: 0; line-height: 26px; color: rgba(0, 0, 0, 1); letter-spacing: 1px">可能长这样</p>
<figure data-tool="mdnice编辑器" style="margin: 10px 0; display: flex; flex-direction: column; justify-content: center; align-items: center"><img src="https://gitee.com/codexiaosheng/md-pictures/raw/master/2020-9-13/1599987440976-image.png"></figure>
<p data-tool="mdnice编辑器" style="font-size: 16px; padding-top: 8px; padding-bottom: 8px; margin: 0; line-height: 26px; color: rgba(0, 0, 0, 1); letter-spacing: 1px">然后设计应该是这样。</p>
<figure data-tool="mdnice编辑器" style="margin: 10px 0; display: flex; flex-direction: column; justify-content: center; align-items: center"><img src="https://gitee.com/codexiaosheng/md-pictures/raw/master/2020-9-13/1599987450853-image.png"></figure>
<p data-tool="mdnice编辑器" style="font-size: 16px; padding-top: 8px; padding-bottom: 8px; margin: 0; line-height: 26px; color: rgba(0, 0, 0, 1); letter-spacing: 1px">如果觉得可行的话，评论留言一下你觉得应该写进这个APP的运维常用命令吧^_^，笔者暂时想到的是top,free -m,df –h,uptime,iftop,iotop,如果有什么好的想法就狠狠的砸过来吧，笔者到时应该也会把这个写成一个项目放到github上，大家一起用嘛，开源才是王道，哈哈。</p>
<h3 data-tool="mdnice编辑器" style="margin-top: 30px; margin-bottom: 15px; padding: 0; font-weight: bold; color: rgba(0, 0, 0, 1); font-size: 20px"><span class="prefix" style="display: none"></span><span class="content">开发安卓APP</span><span class="suffix" style="display: none"></span></h3>
<p data-tool="mdnice编辑器" style="font-size: 16px; padding-top: 8px; padding-bottom: 8px; margin: 0; line-height: 26px; color: rgba(0, 0, 0, 1); letter-spacing: 1px">我们使用kivy开发安卓APP，Kivy是一套专门用于跨平台快速应用开发的开源框架，使用Python和Cython编写，对于多点触控有着非常良好的支持，不仅能让开发者快速完成简洁的交互原型设计，还支持代码重用和部署，绝对是一款颇让人惊艳的NUI框架。</p>
<p data-tool="mdnice编辑器" style="font-size: 16px; padding-top: 8px; padding-bottom: 8px; margin: 0; line-height: 26px; color: rgba(0, 0, 0, 1); letter-spacing: 1px">因为跨平台的，所以只写一遍代码，就可以同时生成安卓及IOS的APP，很酷吧。</p>
<p data-tool="mdnice编辑器" style="font-size: 16px; padding-top: 8px; padding-bottom: 8px; margin: 0; line-height: 26px; color: rgba(0, 0, 0, 1); letter-spacing: 1px">本文会带大家写一个Hello world并瞧一瞧 Python 版的2048的代码</p>
<p data-tool="mdnice编辑器" style="font-size: 16px; padding-top: 8px; padding-bottom: 8px; margin: 0; line-height: 26px; color: rgba(0, 0, 0, 1); letter-spacing: 1px"><strong style="font-weight: bold; color: rgba(233, 105, 0, 1)">kivy安装</strong></p>
<p data-tool="mdnice编辑器" style="font-size: 16px; padding-top: 8px; padding-bottom: 8px; margin: 0; line-height: 26px; color: rgba(0, 0, 0, 1); letter-spacing: 1px">环境说明：笔者在用的是Python2.7.10
这里仅介绍windows平台安装
所有平台参考: <code style="font-size: 14px; word-wrap: break-word; padding: 2px 4px; border-radius: 4px; margin: 0 2px; color: rgba(30, 107, 184, 1); background-color: rgba(27, 31, 35, 0.05); font-family: Operator Mono, Consolas, Monaco, Menlo, monospace; word-break: break-all">https://kivy.org/#download</code>
更新pip,setuptools</p>
<pre class="custom" data-tool="mdnice编辑器" style="margin-top: 10px; margin-bottom: 10px; border-radius: 5px; box-shadow: 0 2px 10px rgba(0, 0, 0, 0.55)"><span style="display: block; background: url("https://my-wechat.mdnice.com/point.png") 10px 10px / 40px no-repeat rgba(40, 44, 52, 1); height: 30px; width: 100%; margin-bottom: -7px; border-radius: 5px"></span><code class="hljs" style="overflow-x: auto; padding: 15px 16px 16px; color: rgba(171, 178, 191, 1); font-family: Operator Mono, Consolas, Monaco, Menlo, monospace; font-size: 12px; -webkit-overflow-scrolling: touch; background: rgba(40, 44, 52, 1); border-radius: 5px">python -m pip install --upgrade pip wheel setuptools<br></code></pre>
<p data-tool="mdnice编辑器" style="font-size: 16px; padding-top: 8px; padding-bottom: 8px; margin: 0; line-height: 26px; color: rgba(0, 0, 0, 1); letter-spacing: 1px">然后是安装所需要的依赖</p>
<pre class="custom" data-tool="mdnice编辑器" style="margin-top: 10px; margin-bottom: 10px; border-radius: 5px; box-shadow: 0 2px 10px rgba(0, 0, 0, 0.55)"><span style="display: block; background: url("https://my-wechat.mdnice.com/point.png") 10px 10px / 40px no-repeat rgba(40, 44, 52, 1); height: 30px; width: 100%; margin-bottom: -7px; border-radius: 5px"></span><code class="hljs" style="overflow-x: auto; padding: 15px 16px 16px; color: rgba(171, 178, 191, 1); font-family: Operator Mono, Consolas, Monaco, Menlo, monospace; font-size: 12px; -webkit-overflow-scrolling: touch; background: rgba(40, 44, 52, 1); border-radius: 5px">python -m pip install docutils pygmentspypiwin32 kivy.deps.sdl2 kivy.deps.glew<br>kivy.deps.gstreamer --extra-index-url https://kivy.org/downloads/packages/simple/<br></code></pre>
<p data-tool="mdnice编辑器" style="font-size: 16px; padding-top: 8px; padding-bottom: 8px; margin: 0; line-height: 26px; color: rgba(0, 0, 0, 1); letter-spacing: 1px">值得注意的是，上面的安卓需要访问Google，所以请自备梯子，而且kivy.deps.gstreamer这个包比较大(95MB)，可以单独本地安装，http://pan.baidu.com/s/1o7mlxNk</p>
<p data-tool="mdnice编辑器" style="font-size: 16px; padding-top: 8px; padding-bottom: 8px; margin: 0; line-height: 26px; color: rgba(0, 0, 0, 1); letter-spacing: 1px">然后就是安装kivy了</p>
<pre class="custom" data-tool="mdnice编辑器" style="margin-top: 10px; margin-bottom: 10px; border-radius: 5px; box-shadow: 0 2px 10px rgba(0, 0, 0, 0.55)"><span style="display: block; background: url("https://my-wechat.mdnice.com/point.png") 10px 10px / 40px no-repeat rgba(40, 44, 52, 1); height: 30px; width: 100%; margin-bottom: -7px; border-radius: 5px"></span><code class="hljs" style="overflow-x: auto; padding: 15px 16px 16px; color: rgba(171, 178, 191, 1); font-family: Operator Mono, Consolas, Monaco, Menlo, monospace; font-size: 12px; -webkit-overflow-scrolling: touch; background: rgba(40, 44, 52, 1); border-radius: 5px">python -m pip install kivy<br></code></pre>
<p data-tool="mdnice编辑器" style="font-size: 16px; padding-top: 8px; padding-bottom: 8px; margin: 0; line-height: 26px; color: rgba(0, 0, 0, 1); letter-spacing: 1px">至此，安装就已经完毕了，值得注意的是64位系统没有开启虚拟化支持，在导入kivy的时候会报错，如果是64位系统就设置一下机器的BIOS，开启虚拟化支持吧。
注：这里只是kivy的运行环境，这样我就能直接在windows机器上直接调试了，怎么将代码编译成APK文件我们会在后面讲到。</p>
<p data-tool="mdnice编辑器" style="font-size: 16px; padding-top: 8px; padding-bottom: 8px; margin: 0; line-height: 26px; color: rgba(0, 0, 0, 1); letter-spacing: 1px">如果kivy在python中应该就能导入了。</p>
<figure data-tool="mdnice编辑器" style="margin: 10px 0; display: flex; flex-direction: column; justify-content: center; align-items: center"><img src="https://gitee.com/codexiaosheng/md-pictures/raw/master/2020-9-13/1599987517325-image.png"></figure>
<p data-tool="mdnice编辑器" style="font-size: 16px; padding-top: 8px; padding-bottom: 8px; margin: 0; line-height: 26px; color: rgba(0, 0, 0, 1); letter-spacing: 1px">按照世界惯例，我们”hello”一下吧。</p>
<p data-tool="mdnice编辑器" style="font-size: 16px; padding-top: 8px; padding-bottom: 8px; margin: 0; line-height: 26px; color: rgba(0, 0, 0, 1); letter-spacing: 1px">新建一个.py文件</p>
<pre class="custom" data-tool="mdnice编辑器" style="margin-top: 10px; margin-bottom: 10px; border-radius: 5px; box-shadow: 0 2px 10px rgba(0, 0, 0, 0.55)"><span style="display: block; background: url("https://my-wechat.mdnice.com/point.png") 10px 10px / 40px no-repeat rgba(40, 44, 52, 1); height: 30px; width: 100%; margin-bottom: -7px; border-radius: 5px"></span><code class="hljs" style="overflow-x: auto; padding: 15px 16px 16px; color: rgba(171, 178, 191, 1); font-family: Operator Mono, Consolas, Monaco, Menlo, monospace; font-size: 12px; -webkit-overflow-scrolling: touch; background: rgba(40, 44, 52, 1); border-radius: 5px"><span class="hljs-keyword" style="color: rgba(198, 120, 221, 1); line-height: 26px">from</span> kivy.app <span class="hljs-keyword" style="color: rgba(198, 120, 221, 1); line-height: 26px">import</span> Appfrom kivy.uix.button importButton<br><span class="hljs-class" style="line-height: 26px"><span class="hljs-keyword" style="color: rgba(198, 120, 221, 1); line-height: 26px">class</span> <span class="hljs-title" style="color: rgba(230, 192, 123, 1); line-height: 26px">TestApp</span><span class="hljs-params" style="line-height: 26px">(App)</span>:</span><br> <span class="hljs-function" style="line-height: 26px"><span class="hljs-keyword" style="color: rgba(198, 120, 221, 1); line-height: 26px">def</span> <span class="hljs-title" style="color: rgba(97, 174, 238, 1); line-height: 26px">build</span><span class="hljs-params" style="line-height: 26px">(self)</span>:</span><br> <span class="hljs-keyword" style="color: rgba(198, 120, 221, 1); line-height: 26px">return</span> Button(text=<span class="hljs-string" style="color: rgba(152, 195, 121, 1); line-height: 26px">'Hello,kivy'</span>)<br>TestApp().run()<br></code></pre>
<p data-tool="mdnice编辑器" style="font-size: 16px; padding-top: 8px; padding-bottom: 8px; margin: 0; line-height: 26px; color: rgba(0, 0, 0, 1); letter-spacing: 1px">运行</p>
<figure data-tool="mdnice编辑器" style="margin: 10px 0; display: flex; flex-direction: column; justify-content: center; align-items: center"><img src="https://gitee.com/codexiaosheng/md-pictures/raw/master/2020-9-13/1599988022441-image.png"></figure>
<p data-tool="mdnice编辑器" style="font-size: 16px; padding-top: 8px; padding-bottom: 8px; margin: 0; line-height: 26px; color: rgba(0, 0, 0, 1); letter-spacing: 1px">然后会弹出一个框，大概如下，点击”hello,kivy”会变颜色</p>
<figure data-tool="mdnice编辑器" style="margin: 10px 0; display: flex; flex-direction: column; justify-content: center; align-items: center"><img src="https://gitee.com/codexiaosheng/md-pictures/raw/master/2020-9-13/1599988036062-image.png"></figure>
<p data-tool="mdnice编辑器" style="font-size: 16px; padding-top: 8px; padding-bottom: 8px; margin: 0; line-height: 26px; color: rgba(0, 0, 0, 1); letter-spacing: 1px">点击窗口并按“F1”会这个窗口的一些属性</p>
<figure data-tool="mdnice编辑器" style="margin: 10px 0; display: flex; flex-direction: column; justify-content: center; align-items: center"><img src="https://gitee.com/codexiaosheng/md-pictures/raw/master/2020-9-13/1599988048465-image.png"></figure>
<p data-tool="mdnice编辑器" style="font-size: 16px; padding-top: 8px; padding-bottom: 8px; margin: 0; line-height: 26px; color: rgba(0, 0, 0, 1); letter-spacing: 1px">然后我们回过头看一看代码。</p>
<pre class="custom" data-tool="mdnice编辑器" style="margin-top: 10px; margin-bottom: 10px; border-radius: 5px; box-shadow: 0 2px 10px rgba(0, 0, 0, 0.55)"><span style="display: block; background: url("https://my-wechat.mdnice.com/point.png") 10px 10px / 40px no-repeat rgba(40, 44, 52, 1); height: 30px; width: 100%; margin-bottom: -7px; border-radius: 5px"></span><code class="hljs" style="overflow-x: auto; padding: 15px 16px 16px; color: rgba(171, 178, 191, 1); font-family: Operator Mono, Consolas, Monaco, Menlo, monospace; font-size: 12px; -webkit-overflow-scrolling: touch; background: rgba(40, 44, 52, 1); border-radius: 5px"><span class="hljs-comment" style="color: rgba(92, 99, 112, 1); font-style: italic; line-height: 26px">##导入App，然后让TestApp这个类继承</span><br>from kivy.app import App<span class="hljs-comment" style="color: rgba(92, 99, 112, 1); font-style: italic; line-height: 26px">##导入一个Button,运维有这个button，当你点击的时候才会有所反应</span><br>from kivy.uix.button<br>importButton<br><span class="hljs-comment" style="color: rgba(92, 99, 112, 1); font-style: italic; line-height: 26px">###定义类，名字必须是xxxAppclass TestApp(App):</span><br> <span class="hljs-comment" style="color: rgba(92, 99, 112, 1); font-style: italic; line-height: 26px">###build一个Button</span><br> def build(self):<br> <span class="hljs-comment" style="color: rgba(92, 99, 112, 1); font-style: italic; line-height: 26px">###返回一个Button,文字内容是“Hello,kivy”</span><br> <span class="hljs-built_in" style="color: rgba(230, 192, 123, 1); line-height: 26px">return</span> Button(text=<span class="hljs-string" style="color: rgba(152, 195, 121, 1); line-height: 26px">'Hello,kivy'</span>)<br><span class="hljs-comment" style="color: rgba(92, 99, 112, 1); font-style: italic; line-height: 26px">##运行,因为继承了App，所以才有的run这个方法TestApp().run()</span><br></code></pre>
<p data-tool="mdnice编辑器" style="font-size: 16px; padding-top: 8px; padding-bottom: 8px; margin: 0; line-height: 26px; color: rgba(0, 0, 0, 1); letter-spacing: 1px">上面就是我们的Hello了</p>
<p data-tool="mdnice编辑器" style="font-size: 16px; padding-top: 8px; padding-bottom: 8px; margin: 0; line-height: 26px; color: rgba(0, 0, 0, 1); letter-spacing: 1px">在windows上运行当然没有什么太大的意义，怎么在安卓手机上运行才是我们想要的，</p>
<p data-tool="mdnice编辑器" style="font-size: 16px; padding-top: 8px; padding-bottom: 8px; margin: 0; line-height: 26px; color: rgba(0, 0, 0, 1); letter-spacing: 1px">这时我们需要一个编译环境。</p>
<p data-tool="mdnice编辑器" style="font-size: 16px; padding-top: 8px; padding-bottom: 8px; margin: 0; line-height: 26px; color: rgba(0, 0, 0, 1); letter-spacing: 1px">官方说明的环境，如下：</p>
<pre class="custom" data-tool="mdnice编辑器" style="margin-top: 10px; margin-bottom: 10px; border-radius: 5px; box-shadow: 0 2px 10px rgba(0, 0, 0, 0.55)"><span style="display: block; background: url("https://my-wechat.mdnice.com/point.png") 10px 10px / 40px no-repeat rgba(40, 44, 52, 1); height: 30px; width: 100%; margin-bottom: -7px; border-radius: 5px"></span><code class="hljs" style="overflow-x: auto; padding: 15px 16px 16px; color: rgba(171, 178, 191, 1); font-family: Operator Mono, Consolas, Monaco, Menlo, monospace; font-size: 12px; -webkit-overflow-scrolling: touch; background: rgba(40, 44, 52, 1); border-radius: 5px">You’ll need:<br>A linux computer or a virtual machine<br>Java<br>Python 2.7 (not 2.6.)<br>Jinja2 (python module)<br>Apache ant<br>Android SDK<br></code></pre>
<p data-tool="mdnice编辑器" style="font-size: 16px; padding-top: 8px; padding-bottom: 8px; margin: 0; line-height: 26px; color: rgba(0, 0, 0, 1); letter-spacing: 1px">虽然官方提供了一个似乎还不错的虚拟机镜像，但是还是有很多内容需要翻出去，所以笔者在这里提供相对而言更加完善的镜像</p>
<p data-tool="mdnice编辑器" style="font-size: 16px; padding-top: 8px; padding-bottom: 8px; margin: 0; line-height: 26px; color: rgba(0, 0, 0, 1); letter-spacing: 1px">下载地址：<code style="font-size: 14px; word-wrap: break-word; padding: 2px 4px; border-radius: 4px; margin: 0 2px; color: rgba(30, 107, 184, 1); background-color: rgba(27, 31, 35, 0.05); font-family: Operator Mono, Consolas, Monaco, Menlo, monospace; word-break: break-all">http://pan.baidu.com/s/1geyAY7x</code>
注:virtualbox，vmware需自行下载
root密码：kivy
默认使用账户kivy，密码：kivy123
当然你也可以下载官方镜像，因为第一次编译需要去国外下一大堆东西，所以请自行去下载。</p>
<figure data-tool="mdnice编辑器" style="margin: 10px 0; display: flex; flex-direction: column; justify-content: center; align-items: center"><img src="https://gitee.com/codexiaosheng/md-pictures/raw/master/2020-8-29/1598671090252-%E6%96%87%E7%AB%A0%E4%B8%AD%E5%B5%8C%E5%85%A5%E5%85%AC%E4%BC%97%E5%8F%B7%E4%BB%8B%E7%BB%8D.png"></figure>
<p data-tool="mdnice编辑器" style="font-size: 16px; padding-top: 8px; padding-bottom: 8px; margin: 0; line-height: 26px; color: rgba(0, 0, 0, 1); letter-spacing: 1px"><strong style="font-weight: bold; color: rgba(233, 105, 0, 1)">Virtual Machine</strong></p>
<p data-tool="mdnice编辑器" style="font-size: 16px; padding-top: 8px; padding-bottom: 8px; margin: 0; line-height: 26px; color: rgba(0, 0, 0, 1); letter-spacing: 1px">A Virtual Machine with Android SDK and NDK and all otherpre-requisites pre installed to ease apk generation:</p>
<ul data-tool="mdnice编辑器" style="margin-top: 8px; margin-bottom: 8px; padding-left: 25px; color: rgba(0, 0, 0, 1); list-style-type: disc">
<li><section style="margin-top: 5px; margin-bottom: 5px; line-height: 26px; text-align: left; color: rgba(1, 1, 1, 1); font-weight: 500">Kivy Buildozer VM</section></li><li><section style="margin-top: 5px; margin-bottom: 5px; line-height: 26px; text-align: left; color: rgba(1, 1, 1, 1); font-weight: 500">Or select the Torrent</section></li></ul>
<p data-tool="mdnice编辑器" style="font-size: 16px; padding-top: 8px; padding-bottom: 8px; margin: 0; line-height: 26px; color: rgba(0, 0, 0, 1); letter-spacing: 1px">在笔者提供的镜像里，桌面上有一个dev_and，只要将上面写的代码，放入这个文件夹即可(当然也可以在其他目录，后面会讲到)。
cd Desktop/dev_and/</p>
<p data-tool="mdnice编辑器" style="font-size: 16px; padding-top: 8px; padding-bottom: 8px; margin: 0; line-height: 26px; color: rgba(0, 0, 0, 1); letter-spacing: 1px">初始化会在当前目录生成一个buildozer.spec文件 用于配置生成的apk相关信息
buildozer init</p>
<pre class="custom" data-tool="mdnice编辑器" style="margin-top: 10px; margin-bottom: 10px; border-radius: 5px; box-shadow: 0 2px 10px rgba(0, 0, 0, 0.55)"><span style="display: block; background: url("https://my-wechat.mdnice.com/point.png") 10px 10px / 40px no-repeat rgba(40, 44, 52, 1); height: 30px; width: 100%; margin-bottom: -7px; border-radius: 5px"></span><code class="hljs" style="overflow-x: auto; padding: 15px 16px 16px; color: rgba(171, 178, 191, 1); font-family: Operator Mono, Consolas, Monaco, Menlo, monospace; font-size: 12px; -webkit-overflow-scrolling: touch; background: rgba(40, 44, 52, 1); border-radius: 5px"><span class="hljs-comment" style="color: rgba(92, 99, 112, 1); font-style: italic; line-height: 26px">###修改buildozer.spec文件</span><br>vi buildozer.spec<br></code></pre>
<p data-tool="mdnice编辑器" style="font-size: 16px; padding-top: 8px; padding-bottom: 8px; margin: 0; line-height: 26px; color: rgba(0, 0, 0, 1); letter-spacing: 1px">至少修改下面三项</p>
<pre class="custom" data-tool="mdnice编辑器" style="margin-top: 10px; margin-bottom: 10px; border-radius: 5px; box-shadow: 0 2px 10px rgba(0, 0, 0, 0.55)"><span style="display: block; background: url("https://my-wechat.mdnice.com/point.png") 10px 10px / 40px no-repeat rgba(40, 44, 52, 1); height: 30px; width: 100%; margin-bottom: -7px; border-radius: 5px"></span><code class="hljs" style="overflow-x: auto; padding: 15px 16px 16px; color: rgba(171, 178, 191, 1); font-family: Operator Mono, Consolas, Monaco, Menlo, monospace; font-size: 12px; -webkit-overflow-scrolling: touch; background: rgba(40, 44, 52, 1); border-radius: 5px"><span class="hljs-comment" style="color: rgba(92, 99, 112, 1); font-style: italic; line-height: 26px"># (str) Title of your applicationtitle = helloworld</span><br><span class="hljs-comment" style="color: rgba(92, 99, 112, 1); font-style: italic; line-height: 26px"># (str) Package namepackage.name = helloapp</span><br><span class="hljs-comment" style="color: rgba(92, 99, 112, 1); font-style: italic; line-height: 26px"># (str) Package domain (needed for android/ios packaging)package.domain = youer.com</span><br></code></pre>
<p data-tool="mdnice编辑器" style="font-size: 16px; padding-top: 8px; padding-bottom: 8px; margin: 0; line-height: 26px; color: rgba(0, 0, 0, 1); letter-spacing: 1px">然后注释</p>
<pre class="custom" data-tool="mdnice编辑器" style="margin-top: 10px; margin-bottom: 10px; border-radius: 5px; box-shadow: 0 2px 10px rgba(0, 0, 0, 0.55)"><span style="display: block; background: url("https://my-wechat.mdnice.com/point.png") 10px 10px / 40px no-repeat rgba(40, 44, 52, 1); height: 30px; width: 100%; margin-bottom: -7px; border-radius: 5px"></span><code class="hljs" style="overflow-x: auto; padding: 15px 16px 16px; color: rgba(171, 178, 191, 1); font-family: Operator Mono, Consolas, Monaco, Menlo, monospace; font-size: 12px; -webkit-overflow-scrolling: touch; background: rgba(40, 44, 52, 1); border-radius: 5px"><span class="hljs-comment" style="color: rgba(92, 99, 112, 1); font-style: italic; line-height: 26px"># (str) Application versioning (method 1)#version.regex = __version__ = ['"](.*)['"]#version.filename = %(source.dir)s/main.py</span><br></code></pre>
<p data-tool="mdnice编辑器" style="font-size: 16px; padding-top: 8px; padding-bottom: 8px; margin: 0; line-height: 26px; color: rgba(0, 0, 0, 1); letter-spacing: 1px">下面这行改为非注释</p>
<pre class="custom" data-tool="mdnice编辑器" style="margin-top: 10px; margin-bottom: 10px; border-radius: 5px; box-shadow: 0 2px 10px rgba(0, 0, 0, 0.55)"><span style="display: block; background: url("https://my-wechat.mdnice.com/point.png") 10px 10px / 40px no-repeat rgba(40, 44, 52, 1); height: 30px; width: 100%; margin-bottom: -7px; border-radius: 5px"></span><code class="hljs" style="overflow-x: auto; padding: 15px 16px 16px; color: rgba(171, 178, 191, 1); font-family: Operator Mono, Consolas, Monaco, Menlo, monospace; font-size: 12px; -webkit-overflow-scrolling: touch; background: rgba(40, 44, 52, 1); border-radius: 5px">version = 1.2.0<br></code></pre>
<p data-tool="mdnice编辑器" style="font-size: 16px; padding-top: 8px; padding-bottom: 8px; margin: 0; line-height: 26px; color: rgba(0, 0, 0, 1); letter-spacing: 1px">最后我们生成我们需要的apk文件</p>
<pre class="custom" data-tool="mdnice编辑器" style="margin-top: 10px; margin-bottom: 10px; border-radius: 5px; box-shadow: 0 2px 10px rgba(0, 0, 0, 0.55)"><span style="display: block; background: url("https://my-wechat.mdnice.com/point.png") 10px 10px / 40px no-repeat rgba(40, 44, 52, 1); height: 30px; width: 100%; margin-bottom: -7px; border-radius: 5px"></span><code class="hljs" style="overflow-x: auto; padding: 15px 16px 16px; color: rgba(171, 178, 191, 1); font-family: Operator Mono, Consolas, Monaco, Menlo, monospace; font-size: 12px; -webkit-overflow-scrolling: touch; background: rgba(40, 44, 52, 1); border-radius: 5px">buildozer -v android debug<br></code></pre>
<p data-tool="mdnice编辑器" style="font-size: 16px; padding-top: 8px; padding-bottom: 8px; margin: 0; line-height: 26px; color: rgba(0, 0, 0, 1); letter-spacing: 1px">buildozer.spec更详细的相关参数配置参考：</p>
<p data-tool="mdnice编辑器" style="font-size: 16px; padding-top: 8px; padding-bottom: 8px; margin: 0; line-height: 26px; color: rgba(0, 0, 0, 1); letter-spacing: 1px"><code style="font-size: 14px; word-wrap: break-word; padding: 2px 4px; border-radius: 4px; margin: 0 2px; color: rgba(30, 107, 184, 1); background-color: rgba(27, 31, 35, 0.05); font-family: Operator Mono, Consolas, Monaco, Menlo, monospace; word-break: break-all">http://buildozer.readthedocs.org/en/latest/specifications.html</code></p>
<p data-tool="mdnice编辑器" style="font-size: 16px; padding-top: 8px; padding-bottom: 8px; margin: 0; line-height: 26px; color: rgba(0, 0, 0, 1); letter-spacing: 1px">buildozer命令会在当前文件夹创建一个bin，该文件夹里面有我们想要的apk文件
helloapp-1.2.0-debug.apk</p>
<p data-tool="mdnice编辑器" style="font-size: 16px; padding-top: 8px; padding-bottom: 8px; margin: 0; line-height: 26px; color: rgba(0, 0, 0, 1); letter-spacing: 1px">helloapp-1.2.0-debug.apk</p>
<p data-tool="mdnice编辑器" style="font-size: 16px; padding-top: 8px; padding-bottom: 8px; margin: 0; line-height: 26px; color: rgba(0, 0, 0, 1); letter-spacing: 1px">安装以后是这样：</p>
<figure data-tool="mdnice编辑器" style="margin: 10px 0; display: flex; flex-direction: column; justify-content: center; align-items: center"><img src="https://gitee.com/codexiaosheng/md-pictures/raw/master/2020-9-13/1599989349852-image.png"></figure>
<p data-tool="mdnice编辑器" style="font-size: 16px; padding-top: 8px; padding-bottom: 8px; margin: 0; line-height: 26px; color: rgba(0, 0, 0, 1); letter-spacing: 1px">话说在编译的时候可能出现空间不足的情况，根据虚拟机的不同(vmware或virtualbox)自行扩容吧。</p>
<p data-tool="mdnice编辑器" style="font-size: 16px; padding-top: 8px; padding-bottom: 8px; margin: 0; line-height: 26px; color: rgba(0, 0, 0, 1); letter-spacing: 1px">最后我们来瞧瞧简易版Python开发的2048这个游戏的源代码。
代码：
https://github.com/mvasilkov/kb/tree/master/6_2048</p>
<p data-tool="mdnice编辑器" style="font-size: 16px; padding-top: 8px; padding-bottom: 8px; margin: 0; line-height: 26px; color: rgba(0, 0, 0, 1); letter-spacing: 1px">先看效果图：</p>
<figure data-tool="mdnice编辑器" style="margin: 10px 0; display: flex; flex-direction: column; justify-content: center; align-items: center"><img src="https://gitee.com/codexiaosheng/md-pictures/raw/master/2020-9-13/1599989364327-image.png"></figure>
<p data-tool="mdnice编辑器" style="font-size: 16px; padding-top: 8px; padding-bottom: 8px; margin: 0; line-height: 26px; color: rgba(0, 0, 0, 1); letter-spacing: 1px">试玩了一下，还是蛮流畅的，有兴趣的可以下载玩一下。</p>
<p data-tool="mdnice编辑器" style="font-size: 16px; padding-top: 8px; padding-bottom: 8px; margin: 0; line-height: 26px; color: rgba(0, 0, 0, 1); letter-spacing: 1px">下载地址：http://pan.baidu.com/s/1eQZACDW
这个游戏代码虽然不长，但是还是蛮占篇幅的，所以简要的说明一下流程。</p>
<figure data-tool="mdnice编辑器" style="margin: 10px 0; display: flex; flex-direction: column; justify-content: center; align-items: center"><img src="https://gitee.com/codexiaosheng/md-pictures/raw/master/2020-9-13/1599989375719-image.png"></figure>
<p data-tool="mdnice编辑器" style="font-size: 16px; padding-top: 8px; padding-bottom: 8px; margin: 0; line-height: 26px; color: rgba(0, 0, 0, 1); letter-spacing: 1px">主要由三部分组成，一是素材，图片音频之类的文件，二是Python代码，三是kv文件，这个kv文件有点像 html 中的css。
Python代码的文件名一般命名为 main.py
然后一定有一个叫做 XXXApp 的类，并继承 App。</p>
<p data-tool="mdnice编辑器" style="font-size: 16px; padding-top: 8px; padding-bottom: 8px; margin: 0; line-height: 26px; color: rgba(0, 0, 0, 1); letter-spacing: 1px">比如该类叫做GameApp，那么该目录下的kv文件则必须为Game，如上图所示，如果不是，那么kv文件中的一些设定就不会生效。</p>
<p data-tool="mdnice编辑器" style="font-size: 16px; padding-top: 8px; padding-bottom: 8px; margin: 0; line-height: 26px; color: rgba(0, 0, 0, 1); letter-spacing: 1px">比如设定一个标签</p>
<pre class="custom" data-tool="mdnice编辑器" style="margin-top: 10px; margin-bottom: 10px; border-radius: 5px; box-shadow: 0 2px 10px rgba(0, 0, 0, 0.55)"><span style="display: block; background: url("https://my-wechat.mdnice.com/point.png") 10px 10px / 40px no-repeat rgba(40, 44, 52, 1); height: 30px; width: 100%; margin-bottom: -7px; border-radius: 5px"></span><code class="hljs" style="overflow-x: auto; padding: 15px 16px 16px; color: rgba(171, 178, 191, 1); font-family: Operator Mono, Consolas, Monaco, Menlo, monospace; font-size: 12px; -webkit-overflow-scrolling: touch; background: rgba(40, 44, 52, 1); border-radius: 5px">Label:<br> id: time<br> text: <span class="hljs-string" style="color: rgba(152, 195, 121, 1); line-height: 26px">'xxxx'</span><br> font_size: 60<br></code></pre>
<p data-tool="mdnice编辑器" style="font-size: 16px; padding-top: 8px; padding-bottom: 8px; margin: 0; line-height: 26px; color: rgba(0, 0, 0, 1); letter-spacing: 1px">id为time，text文本内容为'xxxx',然后字体为60
好吧，点到为止吧，不过似乎什么都没点到。</p>
<figure data-tool="mdnice编辑器" style="margin: 10px 0; display: flex; flex-direction: column; justify-content: center; align-items: center"><img src="https://gitee.com/codexiaosheng/md-pictures/raw/master/2020-8-29/1598715187697-%E5%A4%9A%E5%B9%B3%E5%8F%B0%E5%90%8C%E6%AD%A5%E6%96%87%E6%9C%AB%E5%9B%BE%E7%89%87.png"></figure>
</section>
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来源：https://www.cnblogs.com/codexs/p/13726673.html
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