Update Android SDK to 26

build/config/android/config.gni

@@ -20,5 +20,5 @@ declare_args() {
   android_ndk_root = ""
 
   # Version of the Android SDK.
-  android_sdk_version = 21
+  android_sdk_version = 26
 }

examples/tv-app/android/BUILD.gn

@@ -151,11 +151,11 @@ android_library("java") {
   javac_flags = [ "-Xlint:deprecation" ]
 
   # TODO: add classpath support (we likely need to add something like
-  #  ..../platforms/android-21/android.jar to access BLE items)
+  #  ..../platforms/android-26/android.jar to access BLE items)
 }
 
 java_prebuilt("android") {
-  jar_path = "${android_sdk_root}/platforms/android-21/android.jar"
+  jar_path = "${android_sdk_root}/platforms/android-26/android.jar"
 }
 
 group("default") {

examples/tv-casting-app/android/BUILD.gn

@@ -86,11 +86,11 @@ android_library("java") {
   javac_flags = [ "-Xlint:deprecation" ]
 
   # TODO: add classpath support (we likely need to add something like
-  #  ..../platforms/android-21/android.jar to access BLE items)
+  #  ..../platforms/android-26/android.jar to access BLE items)
 }
 
 java_prebuilt("android") {
-  jar_path = "${android_sdk_root}/platforms/android-21/android.jar"
+  jar_path = "${android_sdk_root}/platforms/android-26/android.jar"
 }
 
 group("default") {

gn_build.sh

@@ -126,7 +126,7 @@ else
     echo
     echo "Hint: Set \$ANDROID_HOME and \$ANDROID_NDK_HOME to enable building for Android"
     echo "      The required android sdk platform version is 21. It can be obtained from"
-    echo "      https://dl.google.com/android/repository/android-21_r02.zip"
+    echo "      https://dl.google.com/android/repository/platform-26_r02.zip"
 fi
 
 echo

src/app/server/java/BUILD.gn

@@ -70,9 +70,9 @@ android_library("java") {
   javac_flags = [ "-Xlint:deprecation" ]
 
   # TODO: add classpath support (we likely need to add something like
-  #  ..../platforms/android-21/android.jar to access BLE items)
+  #  ..../platforms/android-26/android.jar to access BLE items)
 }
 
 java_prebuilt("android") {
-  jar_path = "${android_sdk_root}/platforms/android-21/android.jar"
+  jar_path = "${android_sdk_root}/platforms/android-26/android.jar"
 }

src/controller/java/BUILD.gn

@@ -286,7 +286,7 @@ android_library("java") {
   ]
 
   # TODO: add classpath support (we likely need to add something like
-  #  ..../platforms/android-21/android.jar to access BLE items)
+  #  ..../platforms/android-26/android.jar to access BLE items)
 }
 
 if (chip_link_tests) {
@@ -318,7 +318,7 @@ if (chip_link_tests) {
     javac_flags = [ "-Xlint:deprecation" ]
 
     # TODO: add classpath support (we likely need to add something like
-    #  ..../platforms/android-21/android.jar to access BLE items)
+    #  ..../platforms/android-26/android.jar to access BLE items)
   }
 
   android_library("tests") {
@@ -353,12 +353,12 @@ if (chip_link_tests) {
     javac_flags = [ "-Xlint:deprecation" ]
 
     # TODO: add classpath support (we likely need to add something like
-    #  ..../platforms/android-21/android.jar to access BLE items)
+    #  ..../platforms/android-26/android.jar to access BLE items)
   }
 }
 
 if (!build_java_matter_controller) {
   java_prebuilt("android") {
-    jar_path = "${android_sdk_root}/platforms/android-21/android.jar"
+    jar_path = "${android_sdk_root}/platforms/android-26/android.jar"
   }
 }

src/inet/InetInterface.cpp

@@ -507,143 +507,6 @@ void CloseIOCTLSocket()
     }
 }
 
-#if __ANDROID__ && __ANDROID_API__ < 24
-
-static struct if_nameindex * backport_if_nameindex(void);
-static void backport_if_freenameindex(struct if_nameindex *);
-
-static void backport_if_freenameindex(struct if_nameindex * inArray)
-{
-    if (inArray == NULL)
-    {
-        return;
-    }
-
-    for (size_t i = 0; inArray[i].if_index != 0; i++)
-    {
-        if (inArray[i].if_name != NULL)
-        {
-            Platform::MemoryFree(inArray[i].if_name);
-        }
-    }
-
-    Platform::MemoryFree(inArray);
-}
-
-static struct if_nameindex * backport_if_nameindex(void)
-{
-    int err;
-    unsigned index;
-    size_t intfIter              = 0;
-    size_t maxIntfNum            = 0;
-    size_t numIntf               = 0;
-    size_t numAddrs              = 0;
-    struct if_nameindex * retval = NULL;
-    struct if_nameindex * tmpval = NULL;
-    struct ifaddrs * addrList    = NULL;
-    struct ifaddrs * addrIter    = NULL;
-    const char * lastIntfName    = "";
-
-    err = getifaddrs(&addrList);
-    VerifyOrExit(err >= 0, );
-
-    // coalesce on consecutive interface names
-    for (addrIter = addrList; addrIter != NULL; addrIter = addrIter->ifa_next)
-    {
-        numAddrs++;
-        if (strcmp(addrIter->ifa_name, lastIntfName) == 0)
-        {
-            continue;
-        }
-        numIntf++;
-        lastIntfName = addrIter->ifa_name;
-    }
-
-    tmpval = (struct if_nameindex *) Platform::MemoryAlloc((numIntf + 1) * sizeof(struct if_nameindex));
-    VerifyOrExit(tmpval != NULL, );
-    memset(tmpval, 0, (numIntf + 1) * sizeof(struct if_nameindex));
-
-    lastIntfName = "";
-    for (addrIter = addrList; addrIter != NULL; addrIter = addrIter->ifa_next)
-    {
-        if (strcmp(addrIter->ifa_name, lastIntfName) == 0)
-        {
-            continue;
-        }
-
-        index = if_nametoindex(addrIter->ifa_name);
-        if (index != 0)
-        {
-            tmpval[intfIter].if_index = index;
-            tmpval[intfIter].if_name  = strdup(addrIter->ifa_name);
-            intfIter++;
-        }
-        lastIntfName = addrIter->ifa_name;
-    }
-
-    // coalesce on interface index
-    maxIntfNum = 0;
-    for (size_t i = 0; tmpval[i].if_index != 0; i++)
-    {
-        if (maxIntfNum < tmpval[i].if_index)
-        {
-            maxIntfNum = tmpval[i].if_index;
-        }
-    }
-
-    retval = (struct if_nameindex *) Platform::MemoryAlloc((maxIntfNum + 1) * sizeof(struct if_nameindex));
-    VerifyOrExit(retval != NULL, );
-    memset(retval, 0, (maxIntfNum + 1) * sizeof(struct if_nameindex));
-
-    for (size_t i = 0; tmpval[i].if_index != 0; i++)
-    {
-        struct if_nameindex * intf = &tmpval[i];
-        if (retval[intf->if_index - 1].if_index == 0)
-        {
-            retval[intf->if_index - 1] = *intf;
-        }
-        else
-        {
-            free(intf->if_name);
-            intf->if_index = 0;
-            intf->if_name  = 0;
-        }
-    }
-
-    intfIter = 0;
-
-    // coalesce potential gaps between indeces
-    for (size_t i = 0; i < maxIntfNum; i++)
-    {
-        if (retval[i].if_index != 0)
-        {
-            retval[intfIter] = retval[i];
-            intfIter++;
-        }
-    }
-
-    for (size_t i = intfIter; i < maxIntfNum; i++)
-    {
-        retval[i].if_index = 0;
-        retval[i].if_name  = NULL;
-    }
-
-exit:
-    if (tmpval != NULL)
-    {
-        Platform::MemoryFree(tmpval);
-    }
-
-    if (addrList != NULL)
-    {
-        freeifaddrs(addrList);
-    }
-
-    return retval;
-}
-
-#endif // __ANDROID__ && __ANDROID_API__ < 24
-
 InterfaceIterator::InterfaceIterator()
 {
     mIntfArray       = nullptr;
@@ -656,11 +519,7 @@ InterfaceIterator::~InterfaceIterator()
 {
     if (mIntfArray != nullptr)
     {
-#if __ANDROID__ && __ANDROID_API__ < 24
-        backport_if_freenameindex(mIntfArray);
-#else
         if_freenameindex(mIntfArray);
-#endif
         mIntfArray = nullptr;
     }
 }
@@ -674,11 +533,7 @@ bool InterfaceIterator::Next()
 {
     if (mIntfArray == nullptr)
     {
-#if __ANDROID__ && __ANDROID_API__ < 24
-        mIntfArray = backport_if_nameindex();
-#else
         mIntfArray = if_nameindex();
-#endif
     }
     else if (mIntfArray[mCurIntf].if_index != 0)
     {

src/messaging/tests/java/BUILD.gn

@@ -70,11 +70,11 @@ android_library("java") {
   javac_flags = [ "-Xlint:deprecation" ]
 
   # TODO: add classpath support (we likely need to add something like
-  #  ..../platforms/android-21/android.jar to access BLE items)
+  #  ..../platforms/android-26/android.jar to access BLE items)
 }
 
 if (!build_java_matter_controller) {
   java_prebuilt("android") {
-    jar_path = "${android_sdk_root}/platforms/android-21/android.jar"
+    jar_path = "${android_sdk_root}/platforms/android-26/android.jar"
   }
 }

src/platform/android/BUILD.gn

@@ -105,5 +105,5 @@ android_library("java") {
 }
 
 java_prebuilt("android_sdk") {
-  jar_path = "${android_sdk_root}/platforms/android-21/android.jar"
+  jar_path = "${android_sdk_root}/platforms/android-26/android.jar"
 }

src/setup_payload/java/BUILD.gn

@@ -60,5 +60,5 @@ android_library("java") {
   ]
 
   # TODO: add classpath support (we likely need to add something like
-  #  ..../platforms/android-21/android.jar to access BLE items)
+  #  ..../platforms/android-26/android.jar to access BLE items)
 }