Question

我正在使用当前项目中的ProGuard，并决定尝试优化android配置（使用gradle）：

proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'

我没有找到任何关于proguard和android版本执行的优化的明确文档，这些版本与它们兼容：

-optimizations !code/simplification/arithmetic,!code/simplification/cast,!field/*,!class/merging/*

如果app min sdk版本是11，它们是最新的吗？

所以我决定覆盖它，试试proguard-rules.pro：

-optimizations **
-printconfiguration "result.pro"

但最终配置并不像我预期的那样。它包含所有合并的规则：

-optimizations !code/simplification/arithmetic,!code/simplification/cast,!field/*,!class/merging/*,**

那么如何在ProGuard中正确覆盖选项？或者这行可能等于-optimizations **？

Answer 1

它花了我一些试验和错误，但最终发现了。要覆盖默认的ProGuard优化，例如，应用除code/simplification/arithmetic之外的所有内容：

在ProGuard文件中添加-optimizations行，并使用*代表所有。例如，以下行：
```
-optimizations !code/simplification/arithmetic,*
```
表示“启用除code/simplification/arithmetic之外的所有优化”。 the official website中提供了可用优化列表，您可以使用*启用/禁用优化类（例如!field/*）。
您必须确保在默认ProGuard文件之前加载ProGuard规则文件，方法是在Gradle文件中交换proguard-rules.pro和getDefaultProguardFile('proguard-android.txt')的顺序，以便proguard-rules.pro首先出现：
```
buildTypes {
  release {
    minifyEnabled false
    proguardFiles 'proguard-rules.pro', getDefaultProguardFile('proguard-android.txt')
  }
}
```

输出现在看起来应该是这样的：

Optimizing...
  Number of finalized classes:                 68
  Number of unboxed enum classes:              1
  Number of vertically merged classes:         0
  Number of horizontally merged classes:       3
  Number of removed write-only fields:         0   (disabled)
  Number of privatized fields:                 58
  Number of inlined constant fields:           375
  Number of privatized methods:                13
  Number of staticized methods:                37
  Number of finalized methods:                 210
  Number of removed method parameters:         290
  Number of inlined constant parameters:       236
  Number of inlined constant return values:    239
  Number of inlined short method calls:        35
  Number of inlined unique method calls:       114
  Number of inlined tail recursion calls:      0
  Number of merged code blocks:                4
  Number of variable peephole optimizations:   723
  Number of arithmetic peephole optimizations: 10
  Number of cast peephole optimizations:       0
  Number of field peephole optimizations:      0
  Number of branch peephole optimizations:     42
  Number of string peephole optimizations:     35
  Number of simplified instructions:           369
  Number of removed instructions:              5019
  Number of removed local variables:           154
  Number of removed exception blocks:          0
  Number of optimized local variable frames:   201

正确覆盖proguard选项

1 个答案: