问题描述

我看到 Android Plugin for Gradle 有一个 minifyEnabled 属性以及一个 useProguard 属性，如下:

I see that the Android Plugin for Gradle has a minifyEnabled property as well as a useProguard property, as follows:

android {
    buildTypes {
        debug {
            minifyEnabled true
            useProguard false
        }
        release {
            minifyEnabled true
            useProguard true
        }
    }
}

这两个属性有什么区别?或者，更确切地说，每个的含义是什么?

What's the difference between these two properties? Or, rather, what's the meaning of each?

推荐答案

引用自 tools.android.com:

内置收缩器

Android Plugin for Gradle 2.0 版附带一个实验性的内置代码收缩器，可以代替 ProGuard 使用.这内置收缩器支持快速增量运行，旨在加快向上迭代周期.可以使用以下代码启用它片段:

Version 2.0 of Android Plugin for Gradle ships with an experimental built-in code shrinker, which can be used instead of ProGuard. The built-in shrinker supports fast incremental runs and is meant to speed up iteration cycles. It can be enabled using the following code snippet:

android {
    buildTypes {
        debug {
            minifyEnabled true
            useProguard false
            proguardFiles getDefaultProguardFile('proguard-android.txt')
        }
    }
}

内置的shrinker只能去除死代码，不会混淆或优化.它可以使用相同的文件进行配置ProGuard，但会忽略所有与混淆或优化.

与 ProGuard 不同，我们支持将内置收缩器与Instant Run:视项目而定，可能会显着降低初始构建和安装时间.任何可以访问的方法代码更改后将显示为新添加到程序中，并且防止 Instant Run 热插拔.

Unlike ProGuard, we support using the built-in shrinker together with Instant Run: depending on the project, it may significantly decrease the initial build and install time. Any methods that become reachable after a code change will appear as newly added to the program and prevent an Instant Run hotswap.

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