問題描述

我看到 Android Plugin for Gradle 有一個 minifyEnabled 屬性以及一個 useProguard 屬性，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
        }
    }
}

這兩個屬性有什么區別?或者，更確切地說，每個的含義是什么?

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

推薦答案

引用自 tools.android.com:

內置收縮器

Android Plugin for Gradle 2.0 版附帶一個實驗性的內置代碼收縮器，可以代替 ProGuard 使用.這內置收縮器支持快速增量運行，旨在加快向上迭代周期.可以使用以下代碼啟用它片段:

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')
        }
    }
}

內置的shrinker只能去除死代碼，不會混淆或優化.它可以使用相同的文件進行配置ProGuard，但會忽略所有與混淆或優化.

與 ProGuard 不同，我們支持將內置收縮器與Instant Run:視項目而定，可能會顯著降低初始構建和安裝時間.任何可以訪問的方法代碼更改后將顯示為新添加到程序中，并且防止 Instant Run 熱插拔.

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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