Drop support for Android API levels 21-22 since Google Play Services needs min Android API level of 23 (Android 6.0 Marshmallow).

kannanjgithub · kannanjgithub · commit 0dc42a697838 · 2026-03-06T05:38:53.000Z
diff --git a/README.md b/README.md
@@ -20,7 +20,7 @@ gRPC-Java - An RPC library and framework
 Supported Platforms
 -------------------
 
-gRPC-Java supports Java 8 and later. Android minSdkVersion 21 (Lollipop) and
+gRPC-Java supports Java 8 and later. Android minSdkVersion 23 (Marshmallow) and
 later are supported with [Java 8 language desugaring][android-java-8].
 
 TLS usage on Android typically requires Play Services Dynamic Security Provider.
diff --git a/android/build.gradle b/android/build.gradle
@@ -14,7 +14,7 @@ android {
     }
     compileSdkVersion 34
     defaultConfig {
-        minSdkVersion 22
+        minSdkVersion 23
         targetSdkVersion 33
         versionCode 1
         versionName "1.0"
diff --git a/binder/build.gradle b/binder/build.gradle
@@ -13,7 +13,7 @@ android {
         targetCompatibility 1.8
     }
     defaultConfig {
-        minSdkVersion 22
+        minSdkVersion 23
         targetSdkVersion 33
         versionCode 1
         versionName "1.0"
diff --git a/cronet/build.gradle b/cronet/build.gradle
@@ -14,7 +14,7 @@ android {
     namespace = 'io.grpc.cronet'
     compileSdkVersion 33
     defaultConfig {
-        minSdkVersion 22
+        minSdkVersion 23
         targetSdkVersion 33
         versionCode 1
         versionName "1.0"
diff --git a/examples/android/helloworld/app/build.gradle b/examples/android/helloworld/app/build.gradle
@@ -10,7 +10,7 @@ android {
 
     defaultConfig {
         applicationId "io.grpc.helloworldexample"
-        minSdkVersion 21
+        minSdkVersion 23
         targetSdkVersion 33
         versionCode 1
         versionName "1.0"
diff --git a/examples/android/routeguide/app/build.gradle b/examples/android/routeguide/app/build.gradle
@@ -10,7 +10,7 @@ android {
 
     defaultConfig {
         applicationId "io.grpc.routeguideexample"
-        minSdkVersion 21
+        minSdkVersion 23
         targetSdkVersion 33
         versionCode 1
         versionName "1.0"

Original file line number	Diff line number	Diff line change
`@@ -14,7 +14,7 @@ android {`
`14`	`14`	`}`
`15`	`15`	`compileSdkVersion 34`
`16`	`16`	`defaultConfig {`
`17`		`- minSdkVersion 22`
	`17`	`+ minSdkVersion 23`
`18`	`18`	`targetSdkVersion 33`
`19`	`19`	`versionCode 1`
`20`	`20`	`versionName "1.0"`
Original file line number	Diff line number	Diff line change
`@@ -13,7 +13,7 @@ android {`
`13`	`13`	`targetCompatibility 1.8`
`14`	`14`	`}`
`15`	`15`	`defaultConfig {`
`16`		`- minSdkVersion 22`
	`16`	`+ minSdkVersion 23`
`17`	`17`	`targetSdkVersion 33`
`18`	`18`	`versionCode 1`
`19`	`19`	`versionName "1.0"`