一、收发标准广播Android的广播机制正式借鉴了Wifi的通信原理，不必搭建专门的通路，就能在发送方与接收方之间建立连接，同时广播也是Android的四大组件之一，它用于Android各组件之间的灵活通信，与活动的区别在于以下几点1：活动只能一对一通信，而广播可以一对多，一人发送广播，多人接收处理2：对于发送方来说广播不需要考虑接收放有没有在工作3：对于接收方来说，因为可能会收到各式各样的广....

文章 2023-12-19 来自：开发者社区

Android Studio开发之使用内容组件Content获取通讯信息讲解及实战（附源码包括添加手机联系人和发短信）

运行有问题或需要源码请点赞关注收藏后评论区留言一、利用ContentResolver读写联系人在实际开发中，普通App很少会开放数据接口给其他应用访问。内容组件能够派上用场的情况往往是App想要访问系统应用的通讯数据，比如查看联系人，短信，通话记录等等，以及对这些通讯数据及逆行增删改查。首先要给AndroidMaifest.xml中添加响应的权限配置  ....

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