From 2f30a89fea3cf792496d71edd5d4ef36495cd037 Mon Sep 17 00:00:00 2001
From: Arnab Nandy <arnab_nandy7@yahoo.com>
Date: Sat, 18 Jul 2026 11:42:16 +0530
Subject: [PATCH 1/2] docs: restore ProGuard setup instructions

Signed-off-by: Arnab Nandy <arnab_nandy7@yahoo.com>
---
 docs/setup.md | 20 +++++++++++++++++++-
 1 file changed, 19 insertions(+), 1 deletion(-)

diff --git a/docs/setup.md b/docs/setup.md
index e0da06569..664a20cd8 100644
--- a/docs/setup.md
+++ b/docs/setup.md
@@ -75,6 +75,25 @@ If you are using Gradle, add this to your dependencies:
 compile 'com.google.http-client:google-http-client:[VERSION]'
 ```
 
+## ProGuard
+
+The library uses reflection to access generic types and fields annotated with `@Key`. Add the
+following rules to your ProGuard configuration:
+
+```
+-keepattributes Signature,RuntimeVisibleAnnotations,AnnotationDefault
+
+-keepclassmembers class * {
+  @com.google.api.client.util.Key <fields>;
+}
+```
+
+When using `google-http-client-android`, also add:
+
+```
+-dontwarn com.google.api.client.extensions.android.**
+```
+
 ## Download the library with dependencies
 
 Download the latest assembly zip file from Maven Central and extract it on your computer. This zip
@@ -85,4 +104,3 @@ the dependencies folder. For more details about the contents of the download, se
 
 
 
-

From e924cee1946d7652c5fe7a3d94d76ca19ff58d23 Mon Sep 17 00:00:00 2001
From: Arnab Nandy <arnab_nandy7@yahoo.com>
Date: Sat, 10 Oct 2026 08:20:51 +0530
Subject: [PATCH 2/2] fix: preserve model constructors with ProGuard

Signed-off-by: Arnab Nandy <arnab_nandy7@yahoo.com>
---
 docs/setup.md                                              | 5 +++++
 .../proguard-google-http-client.txt                        | 7 +++++++
 2 files changed, 12 insertions(+)

diff --git a/docs/setup.md b/docs/setup.md
index 664a20cd8..4a8b58b93 100644
--- a/docs/setup.md
+++ b/docs/setup.md
@@ -86,6 +86,11 @@ following rules to your ProGuard configuration:
 -keepclassmembers class * {
   @com.google.api.client.util.Key <fields>;
 }
+
+-keepclasseswithmembers,allowobfuscation class * {
+  @com.google.api.client.util.Key <fields>;
+  public <init>();
+}
 ```
 
 When using `google-http-client-android`, also add:
diff --git a/google-http-client-assembly/proguard-google-http-client.txt b/google-http-client-assembly/proguard-google-http-client.txt
index 55dfdb09b..2cb641be7 100644
--- a/google-http-client-assembly/proguard-google-http-client.txt
+++ b/google-http-client-assembly/proguard-google-http-client.txt
@@ -10,6 +10,13 @@
   @com.google.api.client.util.Key <fields>;
 }
 
+# Needed to keep public no-argument constructors used to instantiate data models via reflection
+
+-keepclasseswithmembers,allowobfuscation class * {
+  @com.google.api.client.util.Key <fields>;
+  public <init>();
+}
+
 # Needed by google-http-client-android when linking against an older platform version
 
 -dontwarn com.google.api.client.extensions.android.**