[dynamic_color] Impr. dynamic color detection on Android (#522)

* [dynamic_color] use `DynamicColors.isDynamicColorAvailable` verification

* [dynamic_color] update changelog

* [global] fix contributing step

* [dynamic_color] revert the example pubspec.lock file

* [dynamic_color] revert pubspec.lock from dynamic_color pkg

* [dynamic_color] Fix changelog lower case at start

* [dynamic_color] Set release version `1.6.9` and date

CONTRIBUTING.md

@@ -21,7 +21,7 @@ Thank you for your interest in contributing! Your work can help many developers.
     cider log changed|added|fixed|removed 'Added a schmilblick'
     ```
 1.  Make sure all the existing tests are passing with `flutter test`.
-1.  Make sure the repo is formatted using `flutter format .`.
+1.  Make sure the repo is formatted using `dart format .`.
 1.  Commit the changes to your branch and push.
 
 That's it! Releasing is done by team members, see the [Releasing](#releasing) section below.

packages/dynamic_color/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 1.6.9 - 2023-12-16
+### Changed
+- Use `DynamicColors.isDynamicColorAvailable` from `com.google.android.material:material` to verify if dynamic colors are available on Android
+
 ## 1.6.8 - 2023-10-17
 ### Changed
 - Broaden constraint for `material_color_utilities` to support it until its `1.0.0` release

packages/dynamic_color/android/build.gradle

@@ -49,4 +49,7 @@ android {
 
 dependencies {
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
+
+    def material_version = '1.7.0'
+    implementation "com.google.android.material:material:$material_version"
 }

packages/dynamic_color/android/src/main/kotlin/io/material/plugins/dynamic_color/DynamicColorPlugin.kt

@@ -1,7 +1,5 @@
 package io.material.plugins.dynamic_color
 
-import androidx.annotation.NonNull
-
 import io.flutter.embedding.engine.plugins.FlutterPlugin
 import io.flutter.plugin.common.MethodCall
 import io.flutter.plugin.common.MethodChannel
@@ -10,6 +8,7 @@ import io.flutter.plugin.common.MethodChannel.Result
 import android.content.res.Resources
 import android.os.Build
 import androidx.annotation.RequiresApi
+import com.google.android.material.color.DynamicColors
 import io.flutter.embedding.engine.plugins.FlutterPlugin.FlutterPluginBinding
 
 class DynamicColorPlugin : FlutterPlugin, MethodCallHandler {
@@ -21,29 +20,28 @@ class DynamicColorPlugin : FlutterPlugin, MethodCallHandler {
 
   private lateinit var binding: FlutterPluginBinding
 
-  override fun onAttachedToEngine(
-    @NonNull flutterPluginBinding: FlutterPluginBinding
-  ) {
+  override fun onAttachedToEngine(flutterPluginBinding: FlutterPluginBinding) {
     channel = MethodChannel(flutterPluginBinding.binaryMessenger, "io.material.plugins/dynamic_color")
     channel.setMethodCallHandler(this)
     this.binding = flutterPluginBinding
   }
 
-  override fun onMethodCall(@NonNull call: MethodCall, @NonNull result: Result) {
-    if (call.method.equals("getCorePalette")) {
-      // Dynamic colors are only available on Android S and up.
-      if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
-        val resources: Resources = binding.applicationContext.resources
-        result.success(getCorePalette(resources))
-      } else {
-        result.success(null)
+  override fun onMethodCall(call: MethodCall, result: Result) {
+    when (call.method) {
+      "getCorePalette" -> {
+        if (DynamicColors.isDynamicColorAvailable()) {
+          val resources: Resources = binding.applicationContext.resources
+          result.success(getCorePalette(resources))
+        } else {
+          result.success(null)
+        }
       }
-    } else {
-      result.notImplemented()
+
+      else -> result.notImplemented()
     }
   }
 
-  override fun onDetachedFromEngine(@NonNull binding: FlutterPluginBinding) {
+  override fun onDetachedFromEngine(binding: FlutterPluginBinding) {
     channel.setMethodCallHandler(null)
   }