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Android demo

Android 知识

Android 框架

Jetpack

异步

网络请求

网络请求封装

图片加载

数据库

事件总线

路由框架

图片压缩

时间/选项选择器

下拉刷新

进度条

JSON解析

Banner

沉浸式状态栏

RecyclerView分割线

RecyclerView LayoutManager

RecyclerView-LayoutManager

适配器封装

开关控件

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字体样式

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权限请求

学习

开发

颜色

Android 中的颜色值通常遵循 RGB/ARGB 标准,使用时通常以 # 字符开头的8位16进制表示。其中ARGB 依次代表透明度(Alpha)、红色(Red)、绿色(Green)、蓝色(Blue),取值范围为0 ~ 255(即16进制的0x00 ~ 0xff)。 A0x000xff 表示从透明到不透明,RGB0x000xff 表示颜色从浅到深。当 RGB 全取最小值(00x000000)时颜色为黑色,全取最大值(2550xffffff)时颜色为白色。颜色透明度表如下: 颜色透明度表

以颜色值#FF99CC00为例,其中FF是透明度,99是红色值,CC是绿色值,00是蓝色值。

  • 全透明:#00000000/(0,0,0,0)
  • 半透明:#80000000/(128,0,0,0)
  • 不透明:#FF000000/(255,0,0,0)

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