Proguard keep class

Proguard keep class. *; } -keepkotlinmetadata. DaggerGenerated public class * {public <methods>;} Some of those classes have companion objects that should also be protected. ProGuard also suggests keeping XXX_LifeCycle adapters: 02-10 14:20:04. Calendar dateTo; } By default, ProGuard even prints out messages if you forget this. i would've loved to be able to keep'em just by specifiying -keepnames public class * extends com. when building the library against other Jan 6, 2016 · remove all lines for proguard file and use below way, using this proguard not change class name of your app (add below lines depend on your requirement like your app haven't content provider then remove that line). Thanks, Eric. R$* { <fields>; } Apr 17, 2013 · When I put the following "keep" rule in my proguard configuration: At first, it seems that all my classes which implements MyInterfaceName get their class names and fields kept unchanged. library. Since minify is enabled, you need to put some rules, rules that you put in proguard-rules. ;) Eric, I believe proguard manual should be more explicit about keeping annotated classes, methods, fields, etc. Sep 6, 2016 · I want to proguard the above class. internal. cfg: -keepclasseswithmembernames class * {. R$* { public static <fields>; } and look at this for a generic android proguard setup: Android: What are the recommended configurations for Proguard? EDIT: For reflection add this:-keepattributes InnerClasses -keep class **. If you want to apply this to the classes which is actually used in your program you can use this rule: # For all classes used in the program keep and obfuscate fields annotated with @ABC. Integrated mode in your Gradle, Ant or Maven project. Make a try with removing -keep public class * { public protected *; } line. dex after applying proguard. To keep everything except classes in your own package you can use the rule that you already pointed out (excluding the brackets): -keep class !my. For your own code: hopefully, you know in which classes you use it. Dec 29, 2014 · And my proguard configuration is. To do this, I added this in my proguard. You most likely have to keep the the class as well as keeping the metadata ( proguard doc ): -keep class it. There are two ways to execute ProGuard: Standalone. 3) keepclasseswithmembers - preserve classes if they satisfy certain conditions based on members. 2) keepclassmembers - preserve class members such as fields & methods. But with great power, comes great responsibility. I would like to obfusce only two sets of package, let's say my. Aug 23, 2017 · The above would keep the interface itself from obfuscation. ** The default proguard. 1 or higher). blablabla. The rule for the -dontwarn should work in a similar way: Jan 18, 2023 · A typical R8 or Proguard rule consists of three sections: A keep option: A keep option defines “whom” to retain for, as follows: keep ensures we retain the target that matches the rule; keepclass ensures we retain the class that matches the rule; keepclasswithmembers retains classes whose members match the rule List classes and class members matched by the various -keep options, to the standard output or to the given file. The optimizer step optimizes bytecode and removes unused instructions. 阅读提示 ProGuard is a free Java class file shrinker, optimizer, obfuscator, and preverifier. google Fix -keepparameternames to keep Kotlin function, constructor and property setter parameter names. Also, to help debug your issue, you should check the generated seeds. 2) preserve all member ( static field ) named CREATOR on the Jan 28, 2022 · in the rule file for proguard This will allow us to ignore members of a particular class. See the ProGuard manual > Usage > Keep Options. -keepclasseswithmembers,allowobfuscation class <1> {. I try keep the names of the methods and attributes is constant, but proguard rename its: If you search for ProGuard rules for a Java or Android library, you’ll see a lot of answers on StackOverflow that tell you to do something like this: -keep class com. * but keep every others and their calls non-obfusced. net. gradle . site. ** { *; } # Application classes that will be serialized/deserialized over Gson # -keep class mypersonalclass. You can't force ProGuard to remove annotations, but you can tell it to keep seemingly unused annotations: -keep @interface com. Object[][] getContents(); } # Keep SafeParcelable value, needed for reflection. Mar 23, 2022 · I protect those by using custom proguard rules around the @Module and @DaggerGenerated annotations. ** Implement sealed classes with the mentioned interface if you prefer maintaining the names. # These classes are duplicated between android. There's one Activity for AndEngine, and it's almost all. Take this for example: public enum Bar implements MyInterfaceName Jul 26, 2013 · 26. One way is to add the following line to your build. – JJD Sep 9, 2020 · proguardFiles — The configuration of ProGuard is done by specifying the default ProGuard rules (proguard-android-optimize. Parcelable from being removed or renamed. This page will guide you through the basic steps of processing your application or library with ProGuard. A common pattern in ProGuard configs for Android applications is to preserve custom View classes, since they are probably referenced only from layout XML instead of application code. * and my. Keeps the names of all public classes in the specified package: -keep public class com. Minify the code. R -keep class **. Sep 20, 2018 · In second instead of using proguard-android. second. plaidapp. -dontoptimize. name. MyCallbackClass { public <methods>; } You probably also need to keep any program classes that occur in the method descriptors. Examples. -keepclassmembernames class * {. **. Shrinking, using R8, removes unused code and resources, offers Feb 20, 2018 · It’s a safe bet to add a @Keep annotation on the whole class or a wildcard rule on all your models: -keep class io. shrinkResources true will compress your images ( png, jpeg, etc) minifyEnabled true will obfuscate you code. { *; } This will implicitly keep everything else. It essentially uses the wildcard to keep all classes belonging to that package. pro has the following configurations but still the method variables appear as a, b etc. 45. [Update] Attention: If you don't want to optimize, use the proguard-android. course { public *; } 3. The resulting applications and libraries are Sep 7, 2017 · Another solution would be to use @Keep annotation from support library to disable the obfuscation for the class: @Keep. gfg. You still can add additionally -keep rules for your classes if needed. Using -keep class com. String name; private java. legacy. answered Mar 28, 2013 at 19:34. model, com. -keep @dagger. Activity. rest_objects. String); } Or e. your_library. From the documentation: The ProGuard tool shrinks, optimizes, and obfuscates your code by removing unused code and renaming classes, fields, and methods with semantically obscure names. The following is the path on my Mac, and your path may differ, but ideally, it will be Proguard doesn't obfuscate the names of Components. public static *** parse(***); } Also -keepclassmembers is preferred over -keepclasseswithmembers as it will only keep the methods you specify and not the class itself (which is probably not needed in your case as you describe). They are found to be stripped from . don't keep super class's public method in proguard. ProGuard's input and output handling offers various ways to keep the output nicely structured. my_public_api_class_name. Notes: class_path is a list of jars, wars, ears, zips, and directories, with optional filters, separated by path separators. customcomponents. Hopefully in future there will be a way with one ProGuard rule to disable the obfuscation for Sep 14, 2016 · 7. myclass package as defined above as well as all fields and methods in those classes. A typical applet. data. Upon project creation, the ADT therefore add these rules to a project's proguard. is() is a boolean function returning a constant which makes it ok to remove some classes. 本文已授权微信公众号「玉刚说」独家发布。. { *; } Using the modifiers allowoptimization and allowobfuscation will make sure that ProGuard still obfuscates and optimizes the code. lang. Before you can use the proguard task, you have to make sure Gradle can find it in its class path at build time. the answer to the question should probably be: # keep all public and protected method names, # which could be used by Java reflection. Android中的“混淆”可以分为两部分，一部分是 Java 代码的优化 Feb 2, 2014 · 1. Obfuscation tends to be less effective for hiding small pieces of information. first. jar. Nov 13, 2015 · What I did: So I made custom ProGuard rules: -dontshrink. sample. -if class *. ProGuard - Keep Entire Package (Different Variations) ~ 1 min read. To keep an inner class (nested class) in Android ProGuard configuration, you can use the -keep directive with the fully qualified name of the inner class. Oct 10, 2016 · # Gson uses generic type information stored in a class file when working with fields. abc. txt. gradle file: Oct 8, 2013 · Add this to your proguard configuration: #Keep the R -keepclassmembers class **. But actually when running, these classes return different simple name with getSimpleName (). Purely informational, since the above already answers your question: serializer lookup at runtime for object is different and happens through INSTANCE. Jan 30, 2018 · Full "-keep" rule means "do not change bytecode of that method, ever". proguard-android-optimize. 1) preserve all classes extending android. somaapp. misc. TWiStErRob. This rule doesn't prevent classes from being stripped away or being obfuscated. Whether they have public members or not. I added the following line in my proguard config: -keep class com. Try renaming your 'proguard-rules. -keepclassmembernames class aa. In this case it means that all private fields in any class that survives shrinking phase will be kept. Dec 9, 2016 · 6. ProGuard can be run as a task in the Java-based build tool Gradle (version 2. google. The getDefaultProguardFile() call references a different default proguard file, one provided by Google and not that in your project. Eg - com. -keep class Foo makes sure the class Foo (but not necessarily its contents) remains present with that name in the output. Its classes won't be included in the output jar, so you then still have to add the library jar to the class path of your processed application. ALSO their name can not be changed, because of keep option. DuckDuckGoApplication_LifecycleAdapter', but the latter could not be found. apache. It detects and removes unused classes, fields, methods, and attributes. bb. -keep class com. Quick Start • Features • Projects • Contributing • License. Also note the *; is required. yourpackage. Fix potential NullPointerException while processing enum classes with invalid Kotlin metadata. android. @ABC <fields>; } # Keep the class name for classes which has at least one used field Mar 28, 2013 · 0. model. why it needs two proguard rule -keep for same class. ** -dontnote android. edited Apr 28, 2015 at 10:27. pro ): Assuming you have an outer class OuterClass with an inner class InnerClass, and you want to keep Oct 18, 2015 · Also see ProGuard docs - Processing enumeration classes. Jan 26, 2017 · Parent question: Android proguard, keep inner class My problem is with inner class of inner class One of the SDKs in my android project has a class A, which has two static inner class. Classes, referenced by kept classes and methods, can not be removed, renamed or repackaged. Eric Lafortune. I tried using wildcard for package names but it isn't working-keep class com. -dontshrink: Don't shrink the input class files. , if all public methods may be callback methods:-keep class mypackage. -keep public class * extends android. forName to retrieve 02-10 14:20:04. txt file that is a part of the SDK). Result: Build of the APP module fails with errors like. If you have an Android project, you can find instructions here. Lifecycling' is calling Class. The more application code you obfuscate, the more difficult it becomes to understand. util. foo. String); } My question is, does this also keep the public enum Currency in a class like this? ProGuard Examples. xyz. ListResourceBundle { protected java. The latter ( -keepclassmembers) will keep class members only of classes that implement android. { *; } That advice is really bad, and you should never do it. opensymphony. Those two rules will shrink you code and the apk will be more light. In order to keep the signatures of those methods intact, I can specify the methods or Proguard doesn't obfuscate the names of Components. answered Jul 11, 2021 at 13:21. *. ** { *; } Warning: It’s possible to make ProGuard is an open-sourced Java class file shrinker, optimizer, obfuscator, and preverifier. **{ *; } How to achieve the desired result? May 11, 2021 · LifeCycle adapters. Sep 28, 2016 · Preserve all classes in the com. I want to keep some fields of MyInnerClass like MY_CONSTANT_1, MY_CONSTANT_2 & MY_INT_1. annotation. A typical Android application. The keep option is used to ask proguard to keep some elements (packages, classes Jan 6, 2016 · remove all lines for proguard file and use below way, using this proguard not change class name of your app (add below lines depend on your requirement like your app haven't content provider then remove that line). 3. Sep 2, 2017 · 1. txt' in your gradle file. To get the implementations of the interface you can do something like this:-keep public class * implements **. Keeping track of the class’s and members’ names ProGuard is a free shrinker, optimizer, obfuscator, and preverifier for Java bytecode: It detects and removes unused classes, fields, methods, and attributes. mypackage. txt in build. Use that and you should be good to go. Conclusion. And I want it to be removed. A typical xlet. txt -keep class * extends java. -keepattributes Signature # For using GSON @Expose annotation -keepattributes *Annotation* # Gson specific classes -dontwarn 如果开启了混淆， Proguard 默认情况下会对所有代码，包括第三方包都进行混淆，可是有些代码或者第三方包是不能混淆的，这就需要我们手动编写混淆规则来保持不能被混淆的部分。. May 14, 2016 · Android proguard, keep inner class of Inner class. holiday. global. ** { *; } -keep class !my. lifecycle. -keepattributes Signature # Gson specific classes -keep class sun. api. Calendar dateFrom; private java. Error: cannot find symbol class my_public_api_class_name. MyCallbackClass { void myCallbackMethod(java. Sep 19, 2011 · You can prevent ProGuard from removing anything in a certain package as follows; -keep,allowoptimization,allowobfuscation class com. Proguard # removes such information by default, so configure it to keep all of it. Your rule was almost correct, just use *** as return type, which will match any type: -keepclassmembers class ** {. So, while using Proguard you should take care of certain things. So remove this as well, so that here the gradle file reads: Jul 25, 2016 · 20. A typical midlet. ** Write out the entire configuration in traditional ProGuard style, to the standard output or to the given file. So, the Proguard will help you in reducing the size of your APK, remove the unused classes and methods and also make your application difficult to reverse engineer. Published 01 Nov 2012. . – Jul 3, 2021 · By default, ProGuard/R8 obfuscates the code: it assigns new short random names to classes and class members. Annotation { the warning seems to be cut off perhaps and missing information. For details on advanced settings or more background information please refer to the relevant parts of the manual. -keep public class * { public *; }-keepclassmembers class * { public *; } Apr 20, 2016 · 1. os. Unsafe { *; } #-keep class com. xwork2. First, it’s overly broad — that double-asterisk in the package means every class under every My android program has a class A, which has two static inner class. core. I mean ALL of them. 2. filename can contain Java system properties delimited by ' < ' and ' > '. Mar 28, 2016 · I proguard a single jar file and just keep a custom not system interface implementation and obfuscate others including method content. 0. myapp. I skip all other stages in order to eliminate where the bug is to only obfuscation stage. ProGuard will then reconstruct the input in this directory, using the original jar names. We write the rule as follows:-keepclassmembers class com. I can't add @Keep to classes I don't own, right? And doesn't -keep class Annotation1{*;} just keep the annotation but not all the other stuff I want to keep? – Mar 16, 2020 · If they were all defined in one, then it would only keep them if the class had all members like that. ProGuard is a powerful tool in the Android developer’s arsenal, offering benefits in terms of size reduction, performance optimization, and security Sep 10, 2016 · 18. ## BEGIN -- Google Play Services proguard. Finally, it preverifies the processed code for Jul 2, 2020 · I am trying to keep all classes in packages that contain the word model in the package name. Fix -keepparameternames to keep Kotlin annotation constructor parameter names. stream. * classes reported missing by R8 during a release build of a Flutter app? 0 ProGuard to keep class members with "unused" annotation Oct 8, 2023 · 0. MyActivity {public void onCreate(android. Module public class * { public <methods>; } -keep @dagger. Android projects. example. ActionSupport but proguard needs the complete signature , the documentation implies that you can keep a class that extends "or" implements , i think they meant and Jan 2, 2014 · 2. 733 28890 28890 W ProGuard Nov 11, 2014 · 2. I want to keep the methods method1 & method2. txt' and remove the reference to 'proguard-rules. It's damn usefull to keep jackson 1, jackson 2 and gson annotated classes. Include the following ProGuard entry:-keepnames class * implements full_qualified_interface_name { *; } Alternatively, use a pattern if your sealed classes share specific common names. -dontnote org. mbonnin. conf :-keep class !my. package. I want to keep some part and remove the remaining. ** Jan 18, 2023 · A typical R8 or Proguard rule consists of three sections: A keep option: A keep option defines “whom” to retain for, as follows: keep ensures we retain the target that matches the rule; keepclass ensures we retain the class that matches the rule; keepclasswithmembers retains classes whose members match the rule Quick Start. pro" file: -keep,allowobfuscation class com. dribbble. Feb 6, 2020 · In the Kotlin programming language, annotations serve as a powerful mechanism to add metadata to code elements, such as classes, functions… 13 min read · Mar 5, 2024 1 Sep 4, 2019 · To add a @Keep annotation on the whole class or a wildcard rule on all your models: -keep class com. It is generally located in the folder path sdk/tools/proguard. duckduckgo. MyAnnotation. It optimizes bytecode and removes unused instructions. My proguard. Sep 22, 2023 · -keep class com. cfg file tries to cover general cases, but you might encounter exceptions such as ClassNotFoundException, which happens when ProGuard strips away an entire class that your application calls. Fix -keepparameternames to keep Kotlin interface parameter names. Optimize the code. Proguard作用. For example: #Gson uses generic type information stored in a class file when working with fields. public protected <methods>; } there are most likely some more rules required, while the -verbose flag tells one what to write into there. { *; } Nov 30, 2017 · 2. play. An example of the difference: With the first command, my entry point methods (such as main) can still be shrunk, optimized, and obfuscated. Holiday { private java. -whyareyoukeeping class_specification A library to parse, modify and analyze Java class files. jar and org. The annotation I created in my library should be used outside of the library, so I need to make sure every class outside of the library that uses it is kept by ProGuard. Impl { public <methods>; } -keep class mypackage. {*;} But now proguard doesn't remove my class com. 733 28890 28890 W ProGuard: the class 'com. Obfuscate the code. bank. As a result, ProGuard processed applications and libraries are smaller and faster. class from the result. gson. Apr 28, 2015 · The first ( -keep) will keep classes and class members that implement android. If you want ProGuard to leave a library untouched, you should specify it with -libraryjars instead of -injars: -libraryjars somelibrary. -keepattributes Signature # For using GSON @Expose annotation -keepattributes *Annotation* # Gson specific classes -keep class sun. Some typical useful configurations: A typical application. 4 and I am trying to do something maybe tricky. -- What is ProGuard? Why do we use it? To make your Android app smaller, enable shrinking in the release build. I've tried configurations like:-keep,allowshrinking,allowoptimization public class * extends com. Some of those are actually useful to the developer — for example, you might want to retain source Aug 15, 2011 · Bottom line is (besides the fact that ProGuard is GREAT!!), I can't seem to make it "see through" and understand that Edition. 1. 这篇文章是「Java 混淆那些事」的第三篇，我们来真枪真刀的干一下子，用实际行动验证了解一下 ProGuard 的 Keep 语法，这篇代码偏多，希望大家好好理解。. Oct 15, 2018 · 1. The following is the path on my Mac, and your path may differ, but ideally, it will be Oct 31, 2020 · ##-----Begin: proguard configuration for Gson ----- # Gson uses generic type information stored in a class file when working with fields. And if you are taking about the classes which defined as. Application. MainEntity So Right now I am confused what you want to achieve. They are f Sep 4, 2019 · To add a @Keep annotation on the whole class or a wildcard rule on all your models: -keep class com. For 3rd party libraries, if you don't know if they use or not the reflection API : then -keep. tools. All the classes in these packages should not be obfuscated. ProGuardCORE is a free library to read, analyze, modify, and write Java class files. Alternatively, you could process the library jar as an Jan 11, 2022 · There is documentation available on how to configure ProGuard, which does not seem to match the configuration you are using. txt, if the class is included then its kept. It is the core of the well-known shrinker, optimizer, and obfuscator ProGuard, the ProGuard Assembler and Disassembler , and the Kotlin Dec 7, 2011 · All class names must be fully qualified:-keepclassmembers class com. How can I exclude a given class from being kept? Thanks. This line in your rules keeps all your classes and interfaces: -keep public class * {. Sep 18, 2023 · Sep 18, 2023. ExtensionsKt {. The classes would need this annotation. Jul 24, 2012 · This one is a piece of gold. - For Android projects these settings can be loaded via referencing proguard-android. -keep class Foo { *; } makes sure the class Foo and all of it fields and methods remain present with their original names in the output. ProGuard automatically removes annotations from the classes/fields/methods if the corresponding annotation classes are not used (retrieved, cast, invoked,) elsewhere. It removes internal attributes that are only useful for debugging, such as source files We would like to show you a description here but the site won’t allow us. ** { *; } works well in my case. It renames the remaining classes, fields, and methods using short meaningless names. Nov 11, 2023 · # This is a simple ProGuard configuration file # Keep the entry point (your main activity)-keep class com. Jun 22, 2018 · Note, that "completely skipping" class with Proguard is a always bad idea, because it may also indirectly keep some classes, used from code of your kept classes. Here's how you can do it in your ProGuard configuration file ( proguard-rules. cfg file. org. { *; } ProGuard will by default remove many code attributes and hidden metadata that are not required for program execution. data class MyRequestBody(val value: String) Using @Keep may cause problems because it's easy to forget to add it for new classes. BuildConfig. http. I want to keep the inner class MyInnerClass. ** {*;} This rule ensures that all classes and methods within the bank package are preserved and obfuscated, enhancing the security of your app. txt' file to 'proguard-android. The easiest way is to specify your input jars (and/or wars, ears, zips, and directories) and a single output directory. If you're referencing that method in your code, it should be kept by Proguard. So use -keep for those classes. Dec 14, 2016 · So, my solution is a bit different: Put all requests, responses and the classes they need (to hold data) into some folder (or folders if you want to be more organized), and create the Proguard rule inside "proguard-rules. So if the code is being used, there's no reason why Proguard would remove it. You can fix errors when ProGuard strips away your code by adding a -keep line in the proguard. Consider the User class described above; we want to keep all of its public methods. Sep 3, 2014 · Knowing that, it's a best practice to -keep all classes and libraries that can be invoked using the reflection API. -keepclassmembers enum * { public static **[] values(); public static ** valueOf(java. Dec 20, 2023 · I am using proguard 2. Bundle);} # Remove unused code Oct 3, 2013 · In my proguard, I have the following to keep public enums from being obfuscated. txt configuration file instead of this one, which turns off the optimization flags. Rest all should be removed. -printusage : List dead code of the input class files, to the standard output or to the given file. The shrinking step detects and removes unused classes, fields, methods, and attributes. You could work with annotations or naming conventions, or create a common base class. g. If you only annotate the interface it wont be a help for ProGuard. app. MyAppBase -optimizationpasses 10 We would like to show you a description here but the site won’t allow us. 02-10 14:20:04. Obfuscating a single class won't have much effect: it may change the class name and a few field names and methods names, and it may optimize some code. My proguard is as below -- Feb 15, 2024 · How to keep some com. Jan 26, 2012 · 8. Some of those are actually useful to the developer — for example, you might want to retain source Sep 29, 2017 · I suggest you become familiar with the class specification syntax in ProGuard, which is used by all keep rules mentioned above and also by the -dontwarn option discussed in the previous section. Sep 9, 2020 · proguardFiles — The configuration of ProGuard is done by specifying the default ProGuard rules (proguard-android-optimize. I try a lot, and find a way satisfies me more or less. 733 28890 28890 W ProGuard: The class 'androidx. According to the documentation -keepclassmembers rule does this: Specifies class members to be preserved, if their classes are preserved as well. -dontpreverify. but it looks like a proguard issue although i am getting this warning when building debug variant. Specifying both "extends" and "implements" is not supported indeed. pro in order to keep classes unobfuscated because some methods needs to be . 4k 9 115 106. txt you should use proguard-android-optimize. The following configuration keeps the names of all public classes in the specified package and its subpackages: I'm trying to prevent proguard from obfuscating interface method variable names. Apr 24, 2012 · the thing is , i want to preserve all Action class and they both extends ActionSupport and implements Constantes. A typical Java Card applet. Use -keepclasseswithmembers instead! Java 混淆那些事（三）：了解 ProGuard Keep 规则. Mar 27, 2018 · Warning: The rule `-keep public class *extends java. zu hx dk mi ng rb ih sz te mn