先看效果图：其实就是 DisplayMetrics类的应用，代码如下： package yc.android.resolution;import android.app.Activity;import android.os.Bundle;import android.util.DisplayMetrics;import android.view.View;impor...

文章 2022-02-16 来自：开发者社区

Android 系统给我们提供了访问通讯录的接口，通过接口获取通讯录信息。Adapter 与 View 的连接主要依靠 getView 这个方法返回我们需要的自定义 view。 ListView 是 Android App 中一个最最最常用的控件了，所以如何让 ListView 流畅运行，获取良好的用户体验是非常重要的。对 ListView 优化就是对 Adapter 中的 getView 方....

文章 2022-02-16 来自：开发者社区

Android Demo手机获取验证码

注册很多app或者网络账户的时候，经常需要手机获取验证码，来完成注册，那时年少，只是觉得手机获取验证码这件事儿很好玩，并没有关心太多，她是如何实现的，以及她背后的故事到底是什么样子的，现在小编接手的这个项目里面，就需要通过手机号进行注册，并且手机号发送相应的验证码，来完成注册，那么在一些应用app里面到底是如何实现点击按钮获取验证码，来完成注册...

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