正确覆盖保护选项

Question

我在当前的项目中使用ProGuard，并决定尝试优化的安卓配置(使用gradle)：

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

我没有找到任何关于proguard和android版本所执行的与它们兼容的优化的清晰文档：

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

如果app min版本是11，它们是最新的吗？

所以我决定重写它，让它在proguard-rules.pro中试一试

-optimizations **
-printconfiguration "result.pro"

但最终的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中正确地重写选项呢？或者这一行可能等于-optimizations **？

Answer 1

我试了一下，但最终还是发现了。要覆盖默认的ProGuard优化，例如，应用除code/simplification/arithmetic之外的所有内容：

1. 将-optimizations行添加到ProGuard文件中，并使用*表示所有内容。例如，下面一行： -optimizations！代码/简化/算术，* 意思是“启用除code/simplification/arithmetic之外的所有优化”。可用优化列表在官方网站中可用，您可以使用*来启用/禁用优化类(例如，!field/*)。
2. 您必须确保在默认的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： getDefaultProguardFile('proguard-android.txt') { buildTypes { minifyEnabled false proguardFiles‘pro卫士规则’，buildTypes}

输出现在应该如下所示：

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