Android Java工具类总结

      2.网络状态监听

          https://www.jianshu.com/p/6fa0f1f1ce48

• 文件

    1.properties读取

 Properties properties = new Properties();
try {
            InputStream in=context.getAssets().open("test.properties");
            properties.load(in);
            in.close();
}catch (IOException e){
  //  ...
    return;
}

String host = properties.getProperty("HOST");

    2.生成excel

        先引用jxl库：https://mvnrepository.com/artifact/net.sourceforge.jexcelapi/jxl/2.6.12

       https://blog.csdn.net/kangweijian/article/details/86694670