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mvp-mvvm's Introduction

MVP-MVVM

MVP+MVVM 项目实例

MVC

MVC全名 Model View Controller

模型（model）-视图（View）-控制器（controller）

M是指业务模型 V是指用户界面 C是指控制器

其中View层是程序的UI界面，用于向用户展示数据以及接收用户的输入 而Model层是JavaBean实体类，用于保存实例数据 Controller控制器用于更新UI界面和数据实例

MVP

MVP是一种经典的模式

M代表Model

V代表View

P则是Presenter（Model和View之间的桥梁）

MVP模式的核心**

把Activity中的UI逻辑抽象成View接口，把业务逻辑抽象成Presenter接口，Model类还是原来的Model类

作用

  1. 分离视图逻辑和业务逻辑，降低耦合
  2. Activity只处理生命周期的任务，代码简洁
  3. 视图逻辑和业务逻辑抽象到了View和Presenter中，提高阅读性
  4. Presenter被抽象成接口，可以有多种具体的实现
  5. 业务逻辑在Presenter中，避免后台线程引用Activity导致内存泄漏

MVVM

MVVM包含三个部分

  • Model代表基本的业务逻辑
  • View显示内容
  • ViewModel将前面两者联系在一起

运行截图

image

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